From ef5f54c5bf3657f89445ba23c7d5785b8df5e648 Mon Sep 17 00:00:00 2001 From: DanielWalnut <45447813+hetaoBackend@users.noreply.github.com> Date: Thu, 25 Jun 2026 20:10:49 +0800 Subject: [PATCH] feat(tui): Hermes-like terminal workbench (`deerflow`) backed by DeerFlowClient (#3760) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit * feat(tui): add Hermes-like terminal workbench backed by DeerFlowClient Implements the `deerflow` TUI from RFC #3540: a terminal-native, embedded workbench over the existing harness (no Gateway/frontend/nginx/Docker), built Python-native with Textual and learning UX patterns from tao-pi. Architecture — every layer except the Textual app is pure and unit-tested: - view_state.py: ViewState + reduce(state, action), the testable heart - runtime.py: StreamEvent -> reducer actions (pure translate + threaded driver) - message_format / command_registry / input_history / render / theme: pure - app.py: Textual App; runs the sync DeerFlowClient.stream() on a worker thread and marshals actions back to the UI thread. Slash command palette, model and thread modal pickers, ↑/↓ history, Ctrl+C interrupt, TTY-aware fallback. - cli.py: pure launch-mode planning + headless --print/--json + `deerflow` console script (textual is an optional [tui] extra; degrades to headless help) Web UI visibility (the RFC's key decision): persistence.py writes a threads_meta row under the local default user into the same DB the Gateway reads, so terminal sessions appear in the Web UI sidebar without running the Gateway. Best-effort, no-op on the memory backend; all DB work on one long-lived background loop. Tests: 95 TUI tests — pure layers via pytest, app/palette/overlays via Textual's pilot harness with a fake session, and a threads_meta read/write round-trip. ruff clean; respects the harness->app import boundary. Docs: backend/docs/TUI.md plus CLAUDE.md/README updates and preview screenshots. Co-Authored-By: Claude Opus 4.8 * fix(tui): de-duplicate streamed assistant text and tool cards; keep Tab in composer Self-test surfaced three issues, all root-caused to consuming non-strict streaming from DeerFlowClient (proven by the client's own test_dedup_requires_messages_before_values_invariant, which shows the client can re-emit a message id's full content twice): - Assistant text was doubled (e.g. "answer answer") because the reducer blindly concatenated same-id deltas. Now merges by content: a re-send or cumulative snapshot replaces; only genuine increments append. - Tool activity showed duplicate and empty "gear" cards from partial/re-emitted tool-call chunks. ToolStarted now de-dupes by tool_call_id, drops id-less noise chunks, and fills the name on a later chunk; a tool result with no prior card still surfaces as a completed card. - Tab moved focus off the composer to the scroll region (felt like broken cursor logic). Tab is now consumed by the composer (completes a command when the palette is open, no-op otherwise). Adds reducer tests for each case plus a Tab-focus test; 102 TUI tests pass. Co-Authored-By: Claude Opus 4.8 * fix(tui): make Esc interrupt an active run (matches the status hint) The status line advertised "esc interrupt" but Esc was only wired to close the slash palette, so it did nothing during a run. Esc now: closes the palette when open, interrupts the active run when streaming, and is a no-op when idle. The interrupt logic is shared with Ctrl+C via _interrupt_run(). Adds a regression test. Co-Authored-By: Claude Opus 4.8 * fix(tui): stop prior answers duplicating on threads with history On a thread with history, DeerFlowClient re-emits every prior message on each new turn (its streamed_ids dedup is per-stream-call), and a re-emitted older message can arrive after a newer message has already started. The reducer only matched the *most recent* assistant row by id and otherwise appended, so each re-emitted older answer was duplicated verbatim at the end of the transcript. Match an assistant row by id anywhere in the transcript and merge in place. Tool cards already de-dupe by call id globally, so they were unaffected. Co-Authored-By: Claude Opus 4.8 * fix(tui): correct CJK cursor drift in the composer Confirmed a Textual Input bug (latest 8.2.7): Input._cursor_offset adds an unconditional +1 at the end of the value, overshooting by one cell after double-width (CJK) characters. That misplaces the hardware/IME cursor — the drift seen when typing Chinese in iTerm2 (the on-screen block cursor, drawn separately in render_line, is fine; English doesn't use an IME so it looks correct). Reproduced with a bare Input, so it's upstream, not our layout. Add ComposerInput(Input) overriding _cursor_offset to the true cell position and use it for the composer. Numeric tests pin the CJK end/mid and ASCII cases. Co-Authored-By: Claude Opus 4.8 * feat(tui): render finalized assistant messages as Markdown The transcript showed raw Markdown (literal **bold**, ## headings, - lists, links). Finalized assistant messages now render as Rich Markdown — headings, bold/italic, lists, inline code + code blocks, blockquotes, horizontal rules and links — with the ● speaker marker aligned to the top of the body. The actively-streaming message stays plain text so partial Markdown doesn't reflow/jump, then snaps to its rendered form when the run ends. Transcript re-renders are coalesced on a ~60ms timer (dirty flag) so per-token Markdown re-parsing stays smooth on long threads. Tests cover both the rendered and the streaming-plain paths. Co-Authored-By: Claude Opus 4.8 * style(tui): apply ruff format CI lint runs `ruff format --check` via uvx (latest ruff); apply the formatter so the lint-backend job passes. No behavior change. Co-Authored-By: Claude Opus 4.8 * chore(tui): address code-quality review comments From github-code-quality[bot] on #3760: - runtime.py: give the `_ClientLike` Protocol method a docstring body instead of a bare `...` (flagged as a no-effect statement), matching the harness convention for Protocol stubs (e.g. SafetyTerminationDetector). - test_tui_cli_main.py: drop the unnecessary `lambda: _FakeSession()` wrappers in monkeypatch.setattr; pass `_FakeSession` directly (same behavior). Co-Authored-By: Claude Opus 4.8 * fix(tui): keep history Markdown-rendered when a follow-up run starts Previously the transcript rendered "the last assistant row" as plain text while streaming. But when a follow-up turn starts, the last assistant row is the *previous, finalized* answer until the new message begins — and the client re-emits prior messages early in the turn — so sending a follow-up reverted the previous answer from rendered Markdown back to raw text. Track the actively-streaming message id in ViewState instead: it's reset on RunStarted, set only when an AssistantDelta actually adds new content (history re-emits are no-ops and don't mark it), and cleared on RunEnded. The renderer keeps only that one message plain; all history stays Markdown. Co-Authored-By: Claude Opus 4.8 * docs(readme): add Terminal Workbench (TUI) section to root README Mention the new `deerflow` TUI alongside the Embedded Python Client in the root README.md and README_zh.md (install, launch/headless commands, feature summary, Web UI visibility), with a ToC entry and a preview screenshot. Links to backend/docs/TUI.md for the full guide. Co-Authored-By: Claude Opus 4.8 * fix(tui): address review feedback (willem-bd) Ten findings from the TUI code review: 1. /resume was dead-ended — registered + in /help + tested as a builtin, but no dispatch branch. Wired it to thread resolution / the switcher. 2. --resume was forwarded raw into the checkpointer (blank thread). Added Session.resolve_ref() to resolve id-or-title via list_threads; used by --resume and /resume. 3. str(get("id","")) returned "None" for an explicit id:None (truthy), defeating the empty-id guard so unrelated null-id tool calls collapsed into one card. Coerce via a None-safe helper. 4. Headless --print/--json no longer spin up the persistence loop/engine/pool (open_session(persistence=False)). 5. _LoopThread + engine are now closed: Session.close() (dispose engine + stop loop) called from a try/finally around app.run(). 6. --cli --continue (and piped --cli) now run headless instead of erroring. 7. Cancelled runs no longer persist a truncated title (guard on _cancelled). 8. Palette highlight resets to the top when the filter set changes. 9. Dropped the never-populated tools count from the header. 10. Documented the `not row.error` merge guard. Adds regression tests for each; 126 TUI tests pass, ruff check + format clean. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com> Co-authored-by: Willem Jiang <willem.jiang@gmail.com> --- README.md | 21 + README_zh.md | 21 + backend/README.md | 12 + backend/docs/TUI.md | 119 ++++ .../packages/harness/deerflow/tui/__init__.py | 1 + .../packages/harness/deerflow/tui/__main__.py | 6 + backend/packages/harness/deerflow/tui/app.py | 648 ++++++++++++++++++ backend/packages/harness/deerflow/tui/cli.py | 237 +++++++ .../harness/deerflow/tui/command_registry.py | 115 ++++ .../harness/deerflow/tui/input_history.py | 58 ++ .../harness/deerflow/tui/message_format.py | 108 +++ .../harness/deerflow/tui/persistence.py | 111 +++ .../packages/harness/deerflow/tui/render.py | 152 ++++ .../packages/harness/deerflow/tui/runtime.py | 130 ++++ .../packages/harness/deerflow/tui/session.py | 92 +++ .../packages/harness/deerflow/tui/theme.py | 42 ++ .../harness/deerflow/tui/view_state.py | 306 +++++++++ .../harness/deerflow/tui/widgets/__init__.py | 1 + .../harness/deerflow/tui/widgets/composer.py | 23 + backend/packages/harness/pyproject.toml | 6 + backend/pyproject.toml | 3 + backend/tests/test_tui_app.py | 148 ++++ backend/tests/test_tui_cli.py | 106 +++ backend/tests/test_tui_cli_main.py | 48 ++ backend/tests/test_tui_command_registry.py | 94 +++ backend/tests/test_tui_composer.py | 46 ++ backend/tests/test_tui_input_history.py | 61 ++ backend/tests/test_tui_message_format.py | 53 ++ backend/tests/test_tui_overlays.py | 127 ++++ backend/tests/test_tui_palette.py | 116 ++++ backend/tests/test_tui_palette_render.py | 44 ++ backend/tests/test_tui_persistence.py | 63 ++ backend/tests/test_tui_render.py | 118 ++++ backend/tests/test_tui_runtime.py | 145 ++++ backend/tests/test_tui_session.py | 59 ++ backend/tests/test_tui_view_state.py | 199 ++++++ backend/uv.lock | 106 ++- .../specs/2026-06-13-deerflow-tui.md | 257 +++++++ docs/tui/tui-markdown.svg | 232 +++++++ docs/tui/tui-palette.svg | 205 ++++++ docs/tui/tui-preview.svg | 195 ++++++ 41 files changed, 4633 insertions(+), 1 deletion(-) create mode 100644 backend/docs/TUI.md create mode 100644 backend/packages/harness/deerflow/tui/__init__.py create mode 100644 backend/packages/harness/deerflow/tui/__main__.py create mode 100644 backend/packages/harness/deerflow/tui/app.py create mode 100644 backend/packages/harness/deerflow/tui/cli.py create mode 100644 backend/packages/harness/deerflow/tui/command_registry.py create mode 100644 backend/packages/harness/deerflow/tui/input_history.py create mode 100644 backend/packages/harness/deerflow/tui/message_format.py create mode 100644 backend/packages/harness/deerflow/tui/persistence.py create mode 100644 backend/packages/harness/deerflow/tui/render.py create mode 100644 backend/packages/harness/deerflow/tui/runtime.py create mode 100644 backend/packages/harness/deerflow/tui/session.py create mode 100644 backend/packages/harness/deerflow/tui/theme.py create mode 100644 backend/packages/harness/deerflow/tui/view_state.py create mode 100644 backend/packages/harness/deerflow/tui/widgets/__init__.py create mode 100644 backend/packages/harness/deerflow/tui/widgets/composer.py create mode 100644 backend/tests/test_tui_app.py create mode 100644 backend/tests/test_tui_cli.py create mode 100644 backend/tests/test_tui_cli_main.py create mode 100644 backend/tests/test_tui_command_registry.py create mode 100644 backend/tests/test_tui_composer.py create mode 100644 backend/tests/test_tui_input_history.py create mode 100644 backend/tests/test_tui_message_format.py create mode 100644 backend/tests/test_tui_overlays.py create mode 100644 backend/tests/test_tui_palette.py create mode 100644 backend/tests/test_tui_palette_render.py create mode 100644 backend/tests/test_tui_persistence.py create mode 100644 backend/tests/test_tui_render.py create mode 100644 backend/tests/test_tui_runtime.py create mode 100644 backend/tests/test_tui_session.py create mode 100644 backend/tests/test_tui_view_state.py create mode 100644 docs/superpowers/specs/2026-06-13-deerflow-tui.md create mode 100644 docs/tui/tui-markdown.svg create mode 100644 docs/tui/tui-palette.svg create mode 100644 docs/tui/tui-preview.svg diff --git a/README.md b/README.md index 692777768..5e81ec6b4 100644 --- a/README.md +++ b/README.md @@ -69,6 +69,7 @@ DeerFlow has newly integrated the intelligent search and crawling toolset indepe - [Long-Term Memory](#long-term-memory) - [Recommended Models](#recommended-models) - [Embedded Python Client](#embedded-python-client) + - [Terminal Workbench (TUI)](#terminal-workbench-tui) - [Documentation](#documentation) - [⚠️ Security Notice](#️-security-notice) - [Improper Deployment May Introduce Security Risks](#improper-deployment-may-introduce-security-risks) @@ -713,6 +714,26 @@ client.upload_files("thread-1", ["./report.pdf"]) # {"success": True, "files": All dict-returning methods are validated against Gateway Pydantic response models in CI (`TestGatewayConformance`), ensuring the embedded client stays in sync with the HTTP API schemas. See `backend/packages/harness/deerflow/client.py` for full API documentation. +## Terminal Workbench (TUI) + +`deerflow` is a terminal-native workbench for people who live in the shell. It runs **embedded** over `DeerFlowClient` — no Gateway, frontend, nginx, or Docker required — while honoring the same `config.yaml`, checkpointer, skills, memory, MCP, and sandbox settings as the rest of DeerFlow. + +![DeerFlow TUI](docs/tui/tui-preview.svg) + +```bash +uv pip install 'deerflow-harness[tui]' # optional 'textual' dependency + +deerflow # launch the terminal UI (TTY required) +deerflow --continue # resume the most recent thread +deerflow --resume THREAD # resume a thread by id +deerflow --print "summarize this repo" # headless one-shot answer to stdout +deerflow --json "hello" # headless newline-delimited StreamEvents +``` + +A keyboard-driven chat surface with a streaming transcript (Markdown-rendered answers), compact tool-activity cards, a `/` slash-command palette, `/model` and `/threads` pickers, input history, and `Esc` / `Ctrl+C` interrupt. Sessions opened in the TUI also appear in the Web UI sidebar — it writes the shared thread store under the local default user, so terminal and web stay in sync **without running the Gateway**. + +See [backend/docs/TUI.md](backend/docs/TUI.md) for the full guide. + ## Documentation - [Contributing Guide](CONTRIBUTING.md) - Development environment setup and workflow diff --git a/README_zh.md b/README_zh.md index eb5795bc0..e2af683bb 100644 --- a/README_zh.md +++ b/README_zh.md @@ -54,6 +54,7 @@ https://github.com/user-attachments/assets/a8bcadc4-e040-4cf2-8fda-dd768b999c18 - [长期记忆](#长期记忆) - [推荐模型](#推荐模型) - [内嵌 Python Client](#内嵌-python-client) + - [终端工作台 (TUI)](#终端工作台-tui) - [文档](#文档) - [⚠️ 安全使用](#️-安全使用) - [参与贡献](#参与贡献) @@ -542,6 +543,26 @@ client.upload_files("thread-1", ["./report.pdf"]) # {"success": True, "files": 所有返回 dict 的方法都会在 CI 中通过 Gateway 的 Pydantic 响应模型校验（`TestGatewayConformance`），以确保内嵌 client 始终和 HTTP API schema 保持同步。完整 API 说明见 `backend/packages/harness/deerflow/client.py`。 +## 终端工作台 (TUI) + +`deerflow` 是一个面向终端用户的工作台，**内嵌**运行在 `DeerFlowClient` 之上——无需启动 Gateway、前端、nginx 或 Docker，同时沿用与 DeerFlow 其它部分相同的 `config.yaml`、checkpointer、技能、记忆、MCP 和沙箱配置。 + +![DeerFlow TUI](docs/tui/tui-preview.svg) + +```bash +uv pip install 'deerflow-harness[tui]' # 可选的 'textual' 依赖 + +deerflow # 启动终端 UI（需要 TTY） +deerflow --continue # 恢复最近一次会话 +deerflow --resume THREAD # 按 id 恢复指定会话 +deerflow --print "总结一下这个仓库" # 无头模式，结果打印到 stdout +deerflow --json "hello" # 无头模式，输出按行分隔的 StreamEvent +``` + +键盘驱动的对话界面：流式渲染的对话区（回答按 Markdown 渲染）、紧凑的工具活动卡片、`/` 斜杠命令面板、`/model` 与 `/threads` 选择器、输入历史，以及 `Esc` / `Ctrl+C` 打断。在 TUI 里开启的会话也会出现在 Web UI 侧边栏——它会以本地默认用户身份写入共享的会话存储，因此终端与网页保持同步，**无需运行 Gateway**。 + +完整说明见 [backend/docs/TUI.md](backend/docs/TUI.md)。 + ## 文档 - [贡献指南](CONTRIBUTING.md) - 开发环境搭建与协作流程 diff --git a/backend/README.md b/backend/README.md index cb48b93a0..51a79a37a 100644 --- a/backend/README.md +++ b/backend/README.md @@ -203,6 +203,18 @@ make dev Direct access: Gateway at http://localhost:8001 +**Terminal Workbench (TUI)** — a terminal-native UI over the embedded harness, +no services required: + +```bash +uv pip install 'deerflow-harness[tui]' # optional 'textual' dependency +deerflow # launch the TUI +deerflow --print "summarize this repo" # headless one-shot +``` + +Sessions opened in the TUI appear in the Web UI sidebar (it writes the shared +`threads_meta` store under the local default user). See [docs/TUI.md](docs/TUI.md). + --- ## Project Structure diff --git a/backend/docs/TUI.md b/backend/docs/TUI.md new file mode 100644 index 000000000..a65d722bf --- /dev/null +++ b/backend/docs/TUI.md @@ -0,0 +1,119 @@ +# DeerFlow Terminal Workbench (TUI) + +`deerflow` is a terminal-native workbench for the DeerFlow harness. It runs +**embedded** over `DeerFlowClient` — no Gateway, frontend, nginx, or Docker +services required — while honoring the same `config.yaml`, checkpointer, skills, +memory, MCP, and sandbox settings as the rest of DeerFlow. + +![DeerFlow TUI](../../docs/tui/tui-preview.svg) + +## Install & run + +The TUI ships as an optional extra so the core harness install stays lean: + +```bash +uv pip install 'deerflow-harness[tui]' # or: pip install textual +``` + +Launch modes: + +| Command | Behavior | +|---|---| +| `deerflow` | Launch the TUI when stdin/stdout are TTYs | +| `deerflow --tui` | Force the TUI (clear diagnostic if `textual` is missing) | +| `deerflow --cli` | Force headless/classic mode for one invocation | +| `deerflow chat` | Same TUI conversation surface | +| `deerflow --continue` | Resume the most recent thread | +| `deerflow --resume THREAD` | Resume a thread by id | +| `deerflow --print "question"` | Headless one-shot answer to stdout | +| `deerflow --json "question"` | Headless newline-delimited `StreamEvent`s | +| `echo "q" \| deerflow --print` | Read the message from stdin | +| `DEER_FLOW_TUI=1 deerflow` | Force the TUI via environment | + +If no TTY is available and no headless flag is given, `deerflow` prints guidance +instead of hanging. + +## Surface + +- **Header** — model, thread, project root, skill/tool counts. +- **Transcript** — user prompts, assistant answers, and compact tool cards + (`⚙ Read path ✓`) with dimmed result previews. Finalized assistant messages + render as Markdown (headings, bold, lists, code, links); the actively-streaming + message stays plain text to avoid reflow jumpiness and snaps to Markdown when + it completes. Transcript re-renders are coalesced (~16 fps) so streaming stays + smooth on long threads. +- **Status line** — run state + animated spinner, model, thread title, token + usage, and an `esc interrupt` hint while a run is active. +- **Composer** — rounded input box. `/` opens the command palette. + +### Keys + +| Key | Action | +|---|---| +| `Enter` | Send message / accept palette selection | +| `/` | Open the slash-command palette | +| `↑` / `↓` | Palette navigation, or input history when the palette is closed | +| `Tab` | Complete the highlighted command (adds a trailing space) | +| `Esc` | Close the palette / overlay | +| `Ctrl+C` | Interrupt the active run, or quit when idle | +| `Ctrl+L` | Redraw · `Ctrl+U` clear composer | + +### Slash commands + +`/help` `/new` `/threads` (`/switch`) `/model` `/skills` `/tools` `/mcp` +`/memory` `/uploads` `/usage` `/config` `/quit`, plus `/<skill-name> task` to +activate any enabled skill for the current turn (same semantics as elsewhere in +DeerFlow). `/model` and `/threads` open modal pickers. + +## Architecture + +The TUI is a UI shell over the existing embedded harness — it does **not** fork +agent behavior. + +``` +cli.py launch-mode planning (pure) + headless print/json + entry point +session.py builds DeerFlowClient (+ checkpointer) and the persistence writer +runtime.py StreamEvent -> reducer actions (pure translate + threaded driver) +view_state.py ViewState + reduce(state, action) (pure, the testable heart) +message_format compact tool summaries / truncation (pure) +command_registry slash-command registry + resolve (pure) +input_history bounded ↑/↓ history (pure) +render.py Rich renderers for header / transcript / status / palette (pure) +theme.py palette + symbols +app.py Textual App: composes widgets, drives runs on a worker thread, + marshals actions back to the UI thread, renders ViewState +persistence.py writes threads_meta so sessions appear in the Web UI (below) +``` + +`DeerFlowClient.stream()` is a **synchronous** generator, so the app runs it on a +Textual worker *thread* and marshals each yielded action back to the UI thread +via `call_from_thread`. The pure layers (everything except `app.py`) have no +Textual dependency and are unit-tested directly with synthetic `StreamEvent`s. + +## Web UI visibility (shared persistence) + +The Web UI lists conversations from the `threads_meta` SQL table (filtered by +`user_id`), **not** from the checkpointer. An embedded run only writes the +checkpointer, so a TUI thread would otherwise be invisible in the sidebar. + +`persistence.py` closes that gap: on the first turn of a thread it writes a +`threads_meta` row — owned by the local default user (`"default"`) — into the +**same** database the Gateway reads, and syncs the generated title afterward. +This requires only the shared `threads_meta` store (built via +`deerflow.persistence.engine.init_engine_from_config`), **not** the Gateway +process. When the database backend is `memory` (no SQL store) the writer +degrades to a silent no-op and the TUI still works. + +All DB work runs on one long-lived background event loop, because a SQLAlchemy +async engine is bound to the loop that created it. + +## Tests + +Pure layers are TDD'd in `backend/tests/test_tui_*.py`; the Textual app, slash +palette, and modal overlays are exercised through Textual's pilot harness with a +fake in-process session (no live model). `test_tui_persistence.py` proves the +`threads_meta` write/read round-trip. + +```bash +cd backend && PYTHONPATH=. uv run pytest tests/ -k tui -q +``` diff --git a/backend/packages/harness/deerflow/tui/__init__.py b/backend/packages/harness/deerflow/tui/__init__.py new file mode 100644 index 000000000..6fa6eceaa --- /dev/null +++ b/backend/packages/harness/deerflow/tui/__init__.py @@ -0,0 +1 @@ +"""DeerFlow terminal workbench (TUI), embedded over DeerFlowClient.""" diff --git a/backend/packages/harness/deerflow/tui/__main__.py b/backend/packages/harness/deerflow/tui/__main__.py new file mode 100644 index 000000000..40897eb14 --- /dev/null +++ b/backend/packages/harness/deerflow/tui/__main__.py @@ -0,0 +1,6 @@ +"""Allow ``python -m deerflow.tui`` to launch the workbench.""" + +from .cli import main + +if __name__ == "__main__": + raise SystemExit(main()) diff --git a/backend/packages/harness/deerflow/tui/app.py b/backend/packages/harness/deerflow/tui/app.py new file mode 100644 index 000000000..75cb720d2 --- /dev/null +++ b/backend/packages/harness/deerflow/tui/app.py @@ -0,0 +1,648 @@ +"""The Textual application — a terminal workbench over the embedded harness. + +The app keeps a single immutable :class:`ViewState` and re-renders it through the +pure renderers. Agent runs execute on a worker *thread* (``DeerFlowClient.stream`` +is a synchronous generator); each yielded action is marshalled back onto the UI +thread via ``call_from_thread`` and folded into the reducer. +""" + +from __future__ import annotations + +import uuid +from functools import partial + +from textual.app import App, ComposeResult +from textual.binding import Binding +from textual.containers import Vertical, VerticalScroll +from textual.screen import ModalScreen +from textual.widgets import Input, Label, OptionList, Static +from textual.widgets.option_list import Option + +from .input_history import InputHistory +from .render import render_header, render_status, render_transcript +from .runtime import stream_actions +from .theme import SYMBOLS, THEME +from .view_state import ( + ClearRows, + RunEnded, + RunStarted, + SystemMessage, + ThreadTitle, + UserSubmitted, + initial_state, + reduce, +) +from .widgets.composer import ComposerInput + +_HELP_TEXT = "Commands: /new /threads /model /skills /tools /mcp /memory /usage /config /quit\nKeys: Enter send · Ctrl+C interrupt or quit · Ctrl+L redraw · / commands · Esc close overlay" + + +class SelectScreen(ModalScreen): + """A centered modal that returns the id of the chosen option (or None).""" + + BINDINGS = [Binding("escape", "cancel", "Close")] + + def __init__(self, title: str, options: list[tuple[str, str]]) -> None: + super().__init__() + self._title = title + self._options = options + + def compose(self) -> ComposeResult: + with Vertical(id="dialog"): + yield Label(self._title, id="dialog-title") + yield OptionList(*[Option(label, id=oid) for oid, label in self._options], id="dialog-list") + + def on_mount(self) -> None: + self.query_one(OptionList).focus() + + def on_option_list_option_selected(self, event: OptionList.OptionSelected) -> None: + self.dismiss(event.option_id) + + def action_cancel(self) -> None: + self.dismiss(None) + + +class DeerFlowTUI(App): + CSS = f""" + Screen {{ + background: {THEME.bg}; + color: {THEME.text}; + }} + #header {{ + height: 1; + padding: 0 1; + background: {THEME.panel}; + }} + #scroll {{ + height: 1fr; + padding: 1 2; + background: {THEME.bg}; + scrollbar-size-vertical: 1; + }} + #transcript {{ + width: 100%; + height: auto; + }} + #status {{ + height: 1; + padding: 0 1; + background: {THEME.panel}; + color: {THEME.muted}; + }} + #palette {{ + height: auto; + max-height: 10; + margin: 0 1; + padding: 0 1; + background: {THEME.panel}; + border: round {THEME.border}; + display: none; + }} + #palette.open {{ + display: block; + }} + #composer {{ + height: 3; + margin: 0 1 1 1; + border: round {THEME.border}; + background: {THEME.panel}; + }} + #composer:focus {{ + border: round {THEME.primary}; + }} + SelectScreen {{ + align: center middle; + }} + SelectScreen #dialog {{ + width: 72; + max-width: 90%; + height: auto; + max-height: 80%; + padding: 1 2; + background: {THEME.panel}; + border: round {THEME.primary}; + }} + SelectScreen #dialog-title {{ + color: {THEME.primary}; + text-style: bold; + padding: 0 0 1 0; + }} + SelectScreen OptionList {{ + background: {THEME.panel}; + border: none; + height: auto; + max-height: 20; + }} + SelectScreen OptionList > .option-list--option-highlighted {{ + background: {THEME.primary}; + color: {THEME.bg}; + }} + """ + + BINDINGS = [ + Binding("ctrl+c", "interrupt", "Interrupt / Quit", priority=True, show=True), + Binding("ctrl+l", "redraw", "Redraw", show=False), + Binding("ctrl+u", "clear_composer", "Clear input", show=False), + # Up/Down drive the palette when it's open, otherwise input history. + # Tab/Enter/Esc only act when the palette is open. check_action gates all + # of these so they never steal keys from a modal overlay or the composer. + Binding("down", "nav_down", show=False, priority=True), + Binding("up", "nav_up", show=False, priority=True), + Binding("tab", "palette_complete", show=False, priority=True), + Binding("escape", "escape", show=False, priority=True), + Binding("enter", "palette_accept", show=False, priority=True), + ] + + def __init__(self, session, plan) -> None: + super().__init__() + self.session = session + self.plan = plan + self.state = initial_state() + self._conv_thread_id: str | None = None + self._model = "" + self._skill_names: list[str] = [] + self._skills = 0 + self._spinner_idx = 0 + self._streaming = False + self._cancelled = False + self._skills_meta: list[dict] = [] + self._model_override: str | None = None + self._palette_open = False + self._palette_items: list = [] + self._palette_index = 0 + self._history = InputHistory() + self._transcript_dirty = False + + # ----- composition --------------------------------------------------- # + + def compose(self) -> ComposeResult: + yield Static(id="header") + with VerticalScroll(id="scroll"): + yield Static(id="transcript") + yield Static(id="status") + yield Static(id="palette") + yield ComposerInput(placeholder="Message DeerFlow… ( / for commands )", id="composer") + + def on_mount(self) -> None: + self._load_session_info() + self._refresh_all() + self.set_interval(0.1, self._tick_spinner) + self.set_interval(0.06, self._flush_transcript) # coalesce streaming re-renders + self.query_one("#composer", Input).focus() + if self.plan and getattr(self.plan, "message", None): + self._send_to_agent(self.plan.message) + + # ----- session info -------------------------------------------------- # + + def _load_session_info(self) -> None: + self._conv_thread_id = self.session.resolve_thread(self.plan) if self.plan else None + client = self.session.client + try: + models = client.list_models().get("models", []) + self._model = next((m.get("display_name") or m.get("name") for m in models if m.get("name")), "") + except Exception: # noqa: BLE001 - header is best-effort + self._model = "" + try: + skills = client.list_skills(enabled_only=True).get("skills", []) + self._skills_meta = [s for s in skills if s.get("name")] + self._skill_names = [s["name"] for s in self._skills_meta] + self._skills = len(self._skill_names) + except Exception: # noqa: BLE001 + self._skills_meta = [] + self._skill_names = [] + self._skills = 0 + + # ----- input --------------------------------------------------------- # + + def on_input_submitted(self, event: Input.Submitted) -> None: + text = event.value.strip() + event.input.value = "" + self._close_palette() + if not text: + return + self._history.add(text) + self._handle_submit(text) + + def on_input_changed(self, event: Input.Changed) -> None: + value = event.value + if value.startswith("/") and " " not in value: + from .command_registry import build_registry, filter_commands + + items = filter_commands(build_registry(self._skills_meta), value[1:]) + # The candidate set changed, so the previous highlight index is stale — + # reset to the top rather than clamping to a now-different command. + self._palette_index = 0 + self._open_palette(items) + else: + self._close_palette() + + # ----- slash command palette ----------------------------------------- # + + def check_action(self, action: str, parameters): # noqa: D401 - Textual hook + custom = {"nav_up", "nav_down", "palette_complete", "palette_accept", "escape"} + if action in custom: + # A modal overlay (e.g. the model/thread picker) is on top — never + # intercept its keys; let the overlay handle them natively. + if len(self.screen_stack) > 1: + return None + # nav (history), Tab and Esc are always consumed (Tab can't move focus + # off the composer; Esc closes the palette or interrupts a run). Enter + # falls through to the Input when the palette is closed so it submits. + if action in {"nav_up", "nav_down", "palette_complete", "escape"}: + return True + return True if self._palette_open else None + return True + + def action_nav_up(self) -> None: + if self._palette_open: + self.action_palette_up() + else: + self._history_move(self._history.up(self.query_one("#composer", Input).value)) + + def action_nav_down(self) -> None: + if self._palette_open: + self.action_palette_down() + else: + self._history_move(self._history.down()) + + def _history_move(self, value: str) -> None: + composer = self.query_one("#composer", Input) + composer.value = value + composer.cursor_position = len(value) + + def _open_palette(self, items: list) -> None: + if not items: + self._close_palette() + return + self._palette_items = items + self._palette_index = min(self._palette_index, len(items) - 1) + self._palette_open = True + palette = self.query_one("#palette", Static) + palette.add_class("open") + self._render_palette() + + def _close_palette(self) -> None: + if not self._palette_open and not self._palette_items: + return + self._palette_open = False + self._palette_items = [] + self._palette_index = 0 + self.query_one("#palette", Static).remove_class("open") + + def _render_palette(self) -> None: + from .render import render_palette + + self.query_one("#palette", Static).update(render_palette(self._palette_items, self._palette_index)) + + def _current_palette_item(self): + if 0 <= self._palette_index < len(self._palette_items): + return self._palette_items[self._palette_index] + return None + + def action_palette_down(self) -> None: + if self._palette_items: + self._palette_index = min(self._palette_index + 1, len(self._palette_items) - 1) + self._render_palette() + + def action_palette_up(self) -> None: + if self._palette_items: + self._palette_index = max(self._palette_index - 1, 0) + self._render_palette() + + def action_palette_complete(self) -> None: + # When the palette is open, Tab completes the highlighted command. + # When it's closed, Tab is a no-op here (consumed) so focus stays in the + # composer instead of moving to the scroll region. + if self._palette_open: + self._fill_from_palette() + + def action_palette_accept(self) -> None: + item = self._current_palette_item() + if item is None: + return + if getattr(item, "category", "") == "skill": + # Skills need a task argument; fill and let the user keep typing. + self._fill_from_palette() + return + self._close_palette() + self.query_one("#composer", Input).value = "" + self._handle_submit(f"/{item.name}") + + def _fill_from_palette(self) -> None: + item = self._current_palette_item() + if item is None: + return + composer = self.query_one("#composer", Input) + composer.value = f"/{item.name} " + composer.cursor_position = len(composer.value) + self._close_palette() + + def _handle_submit(self, text: str) -> None: + from .command_registry import resolve + + res = resolve(text, skills=self._skill_names) + if res.kind == "builtin": + self._handle_builtin(res.name, res.args) + return + if res.kind == "unknown": + self._dispatch(SystemMessage(f"Unknown command /{res.name}. Try /help.", tone="error")) + return + # plain message or skill activation (/skill task) both go to the agent, + # which applies skill-activation semantics on the raw text. + self._send_to_agent(text) + + def _handle_builtin(self, name: str, args: str) -> None: + if name == "quit": + self.exit() + elif name == "help": + self._dispatch(SystemMessage(_HELP_TEXT)) + elif name == "new": + self._conv_thread_id = None + self.state = initial_state() + self._dispatch(SystemMessage("Started a new thread.")) + elif name == "clear": + self._dispatch(ClearRows()) + elif name == "model": + self._open_model_picker() + elif name in {"threads", "switch"}: + self._open_thread_switcher() + elif name == "resume": + self._resume_thread(args) + elif name == "skills": + self._show_skills() + elif name == "mcp": + self._show_mcp() + elif name == "memory": + self._show_memory() + elif name == "usage": + self._show_usage() + elif name == "config": + self._show_config() + elif name == "tools": + self._dispatch(SystemMessage("Tools are listed in the agent's runtime; use /mcp for MCP servers.")) + elif name == "uploads": + self._show_uploads() + elif name == "artifacts": + self._dispatch(SystemMessage("Artifacts appear inline as the agent writes them.", tone="info")) + elif name == "details": + self._dispatch(SystemMessage("Verbose activity is always shown in this build.", tone="info")) + else: + self._dispatch(SystemMessage(f"/{name} is not available yet.", tone="info")) + + # ----- overlays + info commands -------------------------------------- # + + def _open_model_picker(self) -> None: + try: + models = self.session.client.list_models().get("models", []) + except Exception: # noqa: BLE001 + models = [] + options = [(m["name"], (m.get("display_name") or m["name"])) for m in models if m.get("name")] + if not options: + self._dispatch(SystemMessage("No models configured.", tone="error")) + return + + def on_choice(choice: str | None) -> None: + if choice: + self._model_override = choice + self._model = choice + self._dispatch(SystemMessage(f"Model set to {choice}.")) + self._refresh_header() + + self.push_screen(SelectScreen("Select model", options), on_choice) + + def _open_thread_switcher(self) -> None: + try: + threads = self.session.recent_threads(limit=20) + except Exception: # noqa: BLE001 + threads = [] + options: list[tuple[str, str]] = [] + for thread in threads: + tid = thread.get("thread_id") + if not tid: + continue + title = thread.get("title") or "untitled" + options.append((tid, f"{title} · {tid[:8]}")) + if not options: + self._dispatch(SystemMessage("No saved threads yet.")) + return + + def on_choice(choice: str | None) -> None: + if choice: + self._switch_to_thread(choice) + + self.push_screen(SelectScreen("Resume thread", options), on_choice) + + def _resume_thread(self, ref: str) -> None: + """/resume [id-or-title]: switch to a thread, or open the picker if blank.""" + ref = ref.strip() + if not ref: + self._open_thread_switcher() + return + self._switch_to_thread(self.session.resolve_ref(ref)) + + def _switch_to_thread(self, thread_id: str) -> None: + self._conv_thread_id = thread_id + self.state = initial_state() + self._dispatch(SystemMessage(f"Resumed thread {thread_id[:8]}.")) + self._refresh_header() + + def _show_skills(self) -> None: + names = ", ".join(self._skill_names) or "none" + self._dispatch(SystemMessage(f"Enabled skills ({self._skills}): {names}")) + + def _show_mcp(self) -> None: + try: + servers = self.session.client.get_mcp_config().get("mcp_servers", {}) + except Exception: # noqa: BLE001 + self._dispatch(SystemMessage("Could not read MCP config.", tone="error")) + return + if not servers: + self._dispatch(SystemMessage("No MCP servers configured.")) + return + lines = [f"{name}: {'on' if cfg.get('enabled') else 'off'}" for name, cfg in servers.items()] + self._dispatch(SystemMessage("MCP servers — " + " · ".join(lines))) + + def _show_memory(self) -> None: + try: + data = self.session.client.get_memory() + except Exception: # noqa: BLE001 + self._dispatch(SystemMessage("Could not read memory.", tone="error")) + return + facts = data.get("facts", []) if isinstance(data, dict) else [] + top = (data.get("topOfMind") if isinstance(data, dict) else "") or "—" + self._dispatch(SystemMessage(f"Memory: {len(facts)} facts · top of mind: {top}")) + + def _show_usage(self) -> None: + usage = self.state.usage or {} + if not usage: + self._dispatch(SystemMessage("No token usage recorded yet.")) + return + parts = ", ".join(f"{k}={v}" for k, v in usage.items()) + self._dispatch(SystemMessage(f"Token usage — {parts}")) + + def _show_config(self) -> None: + import os + + self._dispatch(SystemMessage(f"cwd: {os.getcwd()} model: {self._model or 'default'}")) + + def _show_uploads(self) -> None: + if not self._conv_thread_id: + self._dispatch(SystemMessage("Start a thread before listing uploads.")) + return + try: + uploads = self.session.client.list_uploads(self._conv_thread_id).get("files", []) + except Exception: # noqa: BLE001 + self._dispatch(SystemMessage("Could not list uploads.", tone="error")) + return + if not uploads: + self._dispatch(SystemMessage("No uploads in this thread.")) + return + names = ", ".join(f.get("filename", "?") for f in uploads) + self._dispatch(SystemMessage(f"Uploads ({len(uploads)}): {names}")) + + # ----- agent run ----------------------------------------------------- # + + def _send_to_agent(self, text: str) -> None: + if self._streaming: + self._dispatch(SystemMessage("Still working — wait for the current run to finish.", tone="info")) + return + if self._conv_thread_id is None: + self._conv_thread_id = str(uuid.uuid4()) + self._cancelled = False + self._dispatch(UserSubmitted(text)) + self.run_worker( + partial(self._stream_worker, text, self._conv_thread_id), + thread=True, + exclusive=True, + group="agent", + ) + + def _stream_worker(self, text: str, thread_id: str) -> None: + kwargs: dict = {} + if self._model_override: + kwargs["model_name"] = self._model_override + + writer = getattr(self.session, "writer", None) + if writer is not None: + # Make this terminal session visible in the Web UI sidebar by writing a + # threads_meta row under the local default user (best-effort, no-op on + # memory backends). Done on this worker thread to keep the UI responsive. + writer.ensure_created(thread_id, assistant_id="lead-agent", metadata={"source": "tui"}) + + latest_title: str | None = None + for action in stream_actions(self.session.client, text, thread_id=thread_id, **kwargs): + if self._cancelled: + break + if isinstance(action, ThreadTitle): + latest_title = action.title + self.call_from_thread(self._on_action, action) + + # Only persist a title for a run that completed normally — an interrupted + # run may only have emitted the title middleware's first, truncated guess. + if writer is not None and latest_title and not self._cancelled: + writer.set_title(thread_id, latest_title) + + def _on_action(self, action) -> None: + self.state = reduce(self.state, action) + if isinstance(action, RunStarted): + self._streaming = True + self._transcript_dirty = True + elif isinstance(action, RunEnded): + self._streaming = False + # Flush now so the finished message snaps to its Markdown rendering. + self._transcript_dirty = False + self._refresh_transcript() + else: + # Coalesce rapid streaming deltas; _flush_transcript renders them. + self._transcript_dirty = True + self._refresh_status() + + def _flush_transcript(self) -> None: + if self._transcript_dirty: + self._transcript_dirty = False + self._refresh_transcript() + + # ----- key actions --------------------------------------------------- # + + def action_interrupt(self) -> None: + if self._streaming: + self._interrupt_run() + else: + self.exit() + + def action_escape(self) -> None: + if self._palette_open: + self._close_palette() + elif self._streaming: + self._interrupt_run() + + def _interrupt_run(self) -> None: + self._cancelled = True + self.workers.cancel_group(self, "agent") + self._streaming = False + self.state = reduce(self.state, RunEnded()) + self._dispatch(SystemMessage("Interrupted.", tone="info")) + + def action_redraw(self) -> None: + self.refresh(layout=True) + self._refresh_all() + + def action_clear_composer(self) -> None: + self.query_one("#composer", Input).value = "" + + # ----- rendering ----------------------------------------------------- # + + def _dispatch(self, action) -> None: + self.state = reduce(self.state, action) + self._refresh_transcript() + self._refresh_status() + + def _tick_spinner(self) -> None: + if self._streaming: + self._spinner_idx = (self._spinner_idx + 1) % len(SYMBOLS["spinner"]) + self._refresh_status() + + def _thread_label(self) -> str: + if not self._conv_thread_id: + return "new thread" + return f"thread {self._conv_thread_id[:8]}" + + def _refresh_all(self) -> None: + self._refresh_header() + self._refresh_transcript() + self._refresh_status() + + def _refresh_header(self) -> None: + import os + + self.query_one("#header", Static).update( + render_header( + model=self._model, + thread_label=self._thread_label(), + cwd=os.getcwd(), + skills=self._skills, + ) + ) + + def _refresh_transcript(self) -> None: + self.query_one("#transcript", Static).update(render_transcript(self.state)) + self.query_one("#scroll", VerticalScroll).scroll_end(animate=False) + + def _refresh_status(self) -> None: + spinner = SYMBOLS["spinner"][self._spinner_idx] if self._streaming else "" + self.query_one("#status", Static).update(render_status(self.state, model=self._model, thread_label=self._thread_label(), spinner=spinner)) + + +def run_tui(plan) -> int: + """Construct the embedded session and run the app. Returns a process exit code.""" + from .session import open_session + + session = open_session() + app = DeerFlowTUI(session, plan) + try: + app.run() + finally: + # Stop the background DB loop + dispose the engine so repeated run_tui + # calls in one process don't leak loops / connection pools. + session.close() + return 0 diff --git a/backend/packages/harness/deerflow/tui/cli.py b/backend/packages/harness/deerflow/tui/cli.py new file mode 100644 index 000000000..b7c57ac69 --- /dev/null +++ b/backend/packages/harness/deerflow/tui/cli.py @@ -0,0 +1,237 @@ +"""Command-line entry point and launch-mode planning for the DeerFlow TUI. + +``plan_launch`` is a pure decision function (fully unit-tested): given argv, TTY +state and the environment, it decides whether to open the terminal UI or run a +headless one-shot. ``main`` wires that decision to the embedded ``DeerFlowClient`` +and lazily imports the Textual app only when actually launching the UI, so the +``deerflow`` console script still runs headless commands without Textual present. +""" + +from __future__ import annotations + +import argparse +import json +import os +import sys +from collections.abc import Sequence +from dataclasses import dataclass +from typing import Literal + +_UNSET = object() + +Mode = Literal["tui", "print", "json", "headless-help"] + + +@dataclass +class LaunchPlan: + mode: Mode + message: str | None = None + read_stdin: bool = False + thread_id: str | None = None + continue_recent: bool = False + forced_tui: bool = False + reason: str = "" + + +def build_parser() -> argparse.ArgumentParser: + parser = argparse.ArgumentParser( + prog="deerflow", + description="DeerFlow terminal workbench — a TUI over the embedded DeerFlow harness.", + add_help=True, + ) + parser.add_argument("message", nargs="*", help="initial prompt for the TUI, or message in --cli mode") + parser.add_argument( + "--print", + dest="print", + nargs="?", + const=None, + default=_UNSET, + metavar="MESSAGE", + help="headless one-shot: print the final answer and exit (reads stdin if no MESSAGE)", + ) + parser.add_argument( + "--json", + dest="json", + nargs="?", + const=None, + default=_UNSET, + metavar="MESSAGE", + help="headless streaming: emit newline-delimited JSON StreamEvents and exit", + ) + parser.add_argument("--tui", action="store_true", help="force the terminal UI (error if unavailable)") + parser.add_argument("--cli", action="store_true", help="force headless/classic mode for one invocation") + parser.add_argument("--continue", dest="continue_recent", action="store_true", help="resume the most recent thread") + parser.add_argument("--resume", dest="resume", metavar="THREAD", default=None, help="resume a thread by id or title") + return parser + + +def _strip_chat(argv: Sequence[str]) -> list[str]: + """Accept an optional leading ``chat`` subcommand as an alias for the default surface.""" + argv = list(argv) + if argv and argv[0] == "chat": + return argv[1:] + return argv + + +def _truthy(value: object) -> bool: + return isinstance(value, str) and value.strip().lower() in {"1", "true", "yes", "on"} + + +def plan_launch( + argv: Sequence[str], + *, + stdin_isatty: bool, + stdout_isatty: bool, + env: dict[str, str], +) -> LaunchPlan: + """Decide what surface to launch. Pure: no I/O, no client construction.""" + args = build_parser().parse_args(_strip_chat(argv)) + positional = " ".join(args.message).strip() or None + resume = args.resume + continue_recent = bool(args.continue_recent) + + if args.print is not _UNSET: + message = args.print if isinstance(args.print, str) else None + if message is None and stdin_isatty: + return LaunchPlan(mode="headless-help", reason="--print needs a MESSAGE argument or piped stdin.") + return LaunchPlan(mode="print", message=message, read_stdin=message is None, thread_id=resume, continue_recent=continue_recent) + + if args.json is not _UNSET: + message = args.json if isinstance(args.json, str) else None + if message is None and stdin_isatty: + return LaunchPlan(mode="headless-help", reason="--json needs a MESSAGE argument or piped stdin.") + return LaunchPlan(mode="json", message=message, read_stdin=message is None, thread_id=resume, continue_recent=continue_recent) + + if args.cli: + if positional: + return LaunchPlan(mode="print", message=positional, thread_id=resume, continue_recent=continue_recent) + # Mirror --print: a piped message or --continue is enough to run headless. + if continue_recent or not stdin_isatty: + return LaunchPlan(mode="print", message=None, read_stdin=True, thread_id=resume, continue_recent=continue_recent) + return LaunchPlan( + mode="headless-help", + reason='--cli needs a message. Try: deerflow --print "your question".', + ) + + forced_tui = bool(args.tui) + if forced_tui or _truthy(env.get("DEER_FLOW_TUI")) or (stdin_isatty and stdout_isatty): + return LaunchPlan( + mode="tui", + message=positional, + thread_id=resume, + continue_recent=continue_recent, + forced_tui=forced_tui, + ) + + return LaunchPlan( + mode="headless-help", + message=positional, + thread_id=resume, + continue_recent=continue_recent, + reason="No interactive terminal detected. Use --print MESSAGE for one-shot output, or --tui to force the UI.", + ) + + +# --------------------------------------------------------------------------- # +# Runtime dispatch (not unit-tested here; covered by smoke + integration). +# --------------------------------------------------------------------------- # + +_HEADLESS_HELP = """\ +deerflow — DeerFlow terminal workbench + + deerflow launch the terminal UI (TTY required) + deerflow --tui force the terminal UI + deerflow --continue resume the most recent thread in the UI + deerflow --resume THREAD resume a thread by id or title + deerflow --print "question" one-shot answer to stdout + deerflow --json "question" stream newline-delimited JSON events + echo "question" | deerflow --print +""" + + +def _resolve_message(plan: LaunchPlan) -> str: + if plan.read_stdin: + return sys.stdin.read().strip() + return plan.message or "" + + +def main(argv: Sequence[str] | None = None) -> int: + argv = list(sys.argv[1:] if argv is None else argv) + plan = plan_launch( + argv, + stdin_isatty=sys.stdin.isatty(), + stdout_isatty=sys.stdout.isatty(), + env=dict(os.environ), + ) + + if plan.mode == "headless-help": + if plan.reason: + print(plan.reason, file=sys.stderr) + print(_HEADLESS_HELP, file=sys.stderr) + return 0 if not plan.reason else 2 + + if plan.mode == "print": + return _run_print(plan) + + if plan.mode == "json": + return _run_json(plan) + + return _run_tui(plan) + + +def _make_session(): + # Imported lazily so the pure planning path never imports the heavy harness. + # Headless one-shots never use the threads_meta writer, so skip persistence + # (no background loop / engine / connection pool just to discard it). + from .session import open_session + + return open_session(persistence=False) + + +def _run_print(plan: LaunchPlan) -> int: + message = _resolve_message(plan) + if not message: + print("No message provided.", file=sys.stderr) + return 2 + session = _make_session() + thread_id = session.resolve_thread(plan) + answer = session.client.chat(message, thread_id=thread_id) + print(answer) + return 0 + + +def _run_json(plan: LaunchPlan) -> int: + message = _resolve_message(plan) + if not message: + print("No message provided.", file=sys.stderr) + return 2 + session = _make_session() + thread_id = session.resolve_thread(plan) + for event in session.client.stream(message, thread_id=thread_id): + payload = {"type": event.type, "data": event.data} + sys.stdout.write(json.dumps(payload, ensure_ascii=False, default=str) + "\n") + sys.stdout.flush() + return 0 + + +def _run_tui(plan: LaunchPlan) -> int: + try: + # Absolute import (not `from .app`) so the harness import-boundary check, + # which records relative module names verbatim, doesn't mistake the sibling + # `deerflow.tui.app` module for the forbidden top-level `app` package. + from deerflow.tui.app import run_tui + except ModuleNotFoundError as exc: # textual missing + if getattr(exc, "name", "") == "textual" or "textual" in str(exc): + msg = "The terminal UI needs the optional 'textual' dependency.\nInstall it with: uv pip install 'deerflow-harness[tui]' (or: pip install textual)\n" + if plan.forced_tui: + print(msg, file=sys.stderr) + return 1 + print(msg + "\nFalling back to headless help:\n", file=sys.stderr) + print(_HEADLESS_HELP, file=sys.stderr) + return 0 + raise + return run_tui(plan) + + +if __name__ == "__main__": + raise SystemExit(main()) diff --git a/backend/packages/harness/deerflow/tui/command_registry.py b/backend/packages/harness/deerflow/tui/command_registry.py new file mode 100644 index 000000000..016f4e77f --- /dev/null +++ b/backend/packages/harness/deerflow/tui/command_registry.py @@ -0,0 +1,115 @@ +"""Slash-command registry for the DeerFlow TUI (pure). + +Normalizes two command sources into one searchable list: + +* **Built-ins** — TUI-owned affordances (``/help``, ``/model``, ``/threads`` …). +* **Skills** — one ``/<skill-name>`` per enabled skill, preserving DeerFlow's + existing slash-skill activation semantics. + +The picker filters this list; :func:`resolve` classifies a submitted line as a +built-in command, a skill activation, an unknown command, or a plain message. +No Textual dependency. +""" + +from __future__ import annotations + +from dataclasses import dataclass +from typing import Literal + + +@dataclass(frozen=True) +class Command: + name: str # without leading slash + description: str + category: Literal["builtin", "skill"] = "builtin" + + +@dataclass(frozen=True) +class Resolution: + kind: Literal["builtin", "skill", "unknown", "message"] + name: str = "" + args: str = "" + text: str = "" + + +# Built-in commands, ordered for display in /help and the picker. +BUILTIN_COMMANDS: tuple[Command, ...] = ( + Command("help", "Show commands and keybindings"), + Command("new", "Start a fresh thread"), + Command("threads", "Open the thread switcher"), + Command("switch", "Open the thread switcher"), + Command("resume", "Resume a thread by id or title"), + Command("model", "Open the model picker"), + Command("skills", "Browse enabled and available skills"), + Command("tools", "Show built-in, MCP and sandbox tools"), + Command("mcp", "Show MCP server status"), + Command("memory", "Show memory status and injected facts"), + Command("uploads", "Show uploaded files for this thread"), + Command("artifacts", "Show generated artifacts"), + Command("details", "Toggle verbose activity rendering"), + Command("usage", "Show token usage and context"), + Command("config", "Show resolved config paths and overrides"), + Command("quit", "Exit the TUI"), +) + +_BUILTIN_NAMES = frozenset(c.name for c in BUILTIN_COMMANDS) + + +def build_registry(skills: list[dict]) -> list[Command]: + """Merge built-ins with one command per enabled skill.""" + commands = list(BUILTIN_COMMANDS) + for skill in skills: + if not skill.get("enabled", False): + continue + name = skill.get("name") + if not name or name in _BUILTIN_NAMES: + continue + commands.append(Command(name=name, description=skill.get("description", "") or "", category="skill")) + return commands + + +def filter_commands(commands: list[Command], query: str) -> list[Command]: + """Filter + rank commands for the picker. + + Ranking: name-prefix matches first, then name-substring, then + description-substring. Original order is preserved within a rank tier. + """ + q = query.strip().lower() + if not q: + return commands + + prefix: list[Command] = [] + substring: list[Command] = [] + description: list[Command] = [] + for command in commands: + name = command.name.lower() + if name.startswith(q): + prefix.append(command) + elif q in name: + substring.append(command) + elif q in command.description.lower(): + description.append(command) + return prefix + substring + description + + +def resolve(text: str, skills: list[str] | None = None) -> Resolution: + """Classify a submitted input line.""" + stripped = text.strip() + if not stripped.startswith("/"): + return Resolution(kind="message", text=text) + + body = stripped[1:] + name, _, args = body.partition(" ") + name = name.strip() + args = args.strip() + + if not name: + return Resolution(kind="unknown", name="") + + if name in _BUILTIN_NAMES: + return Resolution(kind="builtin", name=name, args=args) + + if skills and name in skills: + return Resolution(kind="skill", name=name, args=args) + + return Resolution(kind="unknown", name=name, args=args) diff --git a/backend/packages/harness/deerflow/tui/input_history.py b/backend/packages/harness/deerflow/tui/input_history.py new file mode 100644 index 000000000..ed88f01ae --- /dev/null +++ b/backend/packages/harness/deerflow/tui/input_history.py @@ -0,0 +1,58 @@ +"""Bounded composer input history with up/down navigation (pure). + +No persistence and no Textual dependency here; the app may seed/save entries +elsewhere. Navigation stashes the in-progress draft so walking back through +history and forward again restores what the user was typing. +""" + +from __future__ import annotations + +DEFAULT_LIMIT = 200 + + +class InputHistory: + def __init__(self, entries: list[str] | None = None, limit: int = DEFAULT_LIMIT) -> None: + self._limit = max(1, limit) + self._entries: list[str] = list(entries or [])[-self._limit :] + self._cursor: int | None = None # None => not navigating + self._draft: str = "" + + def entries(self) -> list[str]: + return list(self._entries) + + def add(self, text: str) -> None: + """Record a submitted entry. Ignores blank and consecutive-duplicate lines.""" + self._cursor = None + self._draft = "" + if not text.strip(): + return + if self._entries and self._entries[-1] == text: + return + self._entries.append(text) + if len(self._entries) > self._limit: + self._entries = self._entries[-self._limit :] + + def up(self, draft: str = "") -> str: + """Move one entry older. Returns the entry (or ``draft`` if empty).""" + if not self._entries: + return draft + if self._cursor is None: + self._draft = draft + self._cursor = len(self._entries) - 1 + elif self._cursor > 0: + self._cursor -= 1 + return self._entries[self._cursor] + + def down(self) -> str: + """Move one entry newer. Past the newest entry, restores the draft.""" + if self._cursor is None: + return self._draft + if self._cursor < len(self._entries) - 1: + self._cursor += 1 + return self._entries[self._cursor] + self._cursor = None + return self._draft + + def reset(self) -> None: + self._cursor = None + self._draft = "" diff --git a/backend/packages/harness/deerflow/tui/message_format.py b/backend/packages/harness/deerflow/tui/message_format.py new file mode 100644 index 000000000..8dcfe348f --- /dev/null +++ b/backend/packages/harness/deerflow/tui/message_format.py @@ -0,0 +1,108 @@ +"""Compact, human-friendly formatting for tool activity in the TUI. + +Pure helpers: given a tool name + args (or a tool result), produce short, +readable strings for the transcript instead of dumping raw JSON. No Textual +dependency. +""" + +from __future__ import annotations + +import json +from typing import Any + +# Friendly titles for built-in tools. Anything not listed falls back to a +# humanized version of the raw name. +_TOOL_TITLES: dict[str, str] = { + "read_file": "Read", + "write_file": "Write", + "edit_file": "Edit", + "str_replace": "Edit", + "bash": "Bash", + "shell": "Shell", + "command": "Run", + "web_search": "Search", + "web_fetch": "Fetch", + "todo_write": "Todo", + "task": "Subagent", + "ls": "List", + "glob": "Find", + "grep": "Search", +} + +# Per-tool: which arg holds the single most salient value to show inline. +_DETAIL_KEYS: dict[str, tuple[str, ...]] = { + "read_file": ("path", "file_path", "filename"), + "write_file": ("path", "file_path", "filename"), + "edit_file": ("path", "file_path", "filename"), + "bash": ("command", "cmd"), + "shell": ("command", "cmd"), + "command": ("command", "cmd"), + "web_search": ("query", "q"), + "grep": ("pattern", "query"), + "glob": ("pattern",), + "web_fetch": ("url",), +} + +# Generic arg keys to try when a tool isn't in _DETAIL_KEYS. +_GENERIC_DETAIL_KEYS = ("path", "file_path", "command", "query", "url", "pattern", "name") + +DEFAULT_DETAIL_LIMIT = 80 +DEFAULT_RESULT_LIMIT = 160 + + +def truncate(text: str, limit: int) -> str: + """Truncate ``text`` to ``limit`` chars, appending an ellipsis marker.""" + if len(text) <= limit: + return text + return text[:limit].rstrip() + "…" + + +def summarize_tool_title(tool_name: str) -> str: + if not tool_name or not tool_name.strip(): + return "Tool" + if tool_name in _TOOL_TITLES: + return _TOOL_TITLES[tool_name] + return _humanize(tool_name) + + +def format_tool_detail(tool_name: str, args: Any, limit: int = DEFAULT_DETAIL_LIMIT) -> str: + """Return a short inline detail for a tool call (e.g. the path or command).""" + if not isinstance(args, dict) or not args: + return "" + + keys = _DETAIL_KEYS.get(tool_name, ()) + _GENERIC_DETAIL_KEYS + for key in keys: + value = args.get(key) + if isinstance(value, str) and value.strip(): + return truncate(_one_line(value), limit) + + # Fallback: compact JSON of the args. + try: + compact = json.dumps(args, ensure_ascii=False, separators=(",", ":")) + except (TypeError, ValueError): + compact = str(args) + return truncate(compact, limit) + + +def format_tool_result(result: Any, limit: int = DEFAULT_RESULT_LIMIT) -> str: + """Return a one-line, truncated preview of a tool result.""" + if result is None: + return "" + if not isinstance(result, str): + try: + result = json.dumps(result, ensure_ascii=False, separators=(",", ":")) + except (TypeError, ValueError): + result = str(result) + return truncate(_one_line(result), limit) + + +def _one_line(text: str) -> str: + """Collapse all runs of whitespace (incl. newlines) into single spaces.""" + return " ".join(text.split()) + + +def _humanize(name: str) -> str: + cleaned = name.replace("_", " ").replace("-", " ").strip() + if not cleaned: + return name + return " ".join(word[:1].upper() + word[1:] for word in cleaned.split()) diff --git a/backend/packages/harness/deerflow/tui/persistence.py b/backend/packages/harness/deerflow/tui/persistence.py new file mode 100644 index 000000000..122d3eac1 --- /dev/null +++ b/backend/packages/harness/deerflow/tui/persistence.py @@ -0,0 +1,111 @@ +"""Shared-persistence wiring so terminal sessions show up in the Web UI. + +The Web UI lists conversations from the ``threads_meta`` SQL table (filtered by +``user_id``), not from the checkpointer. An embedded run only writes the +checkpointer, so a TUI thread would be invisible in the sidebar. This module +closes that gap: it writes a ``threads_meta`` row (owned by the local default +user) into the **same** database the Gateway reads — without requiring the +Gateway process to be running. + +Everything here is best-effort: when the database is memory-backed or +unavailable, the writer degrades to a no-op and the TUI keeps working. + +The SQLAlchemy async engine is bound to the event loop that created it, so all +DB work runs on one long-lived background loop (``_LoopThread``) rather than a +fresh ``asyncio.run`` per call (which would bind connections to throwaway loops). +""" + +from __future__ import annotations + +import asyncio +import threading +from collections.abc import Awaitable +from typing import Any + +from deerflow.runtime.user_context import DEFAULT_USER_ID + + +class _LoopThread: + """A daemon thread running a single asyncio event loop for DB work.""" + + def __init__(self) -> None: + self._loop = asyncio.new_event_loop() + self._thread = threading.Thread(target=self._run, name="deerflow-tui-db", daemon=True) + self._thread.start() + + def _run(self) -> None: + asyncio.set_event_loop(self._loop) + self._loop.run_forever() + + def run(self, coro: Awaitable[Any], *, timeout: float = 15.0) -> Any: + future = asyncio.run_coroutine_threadsafe(coro, self._loop) + return future.result(timeout) + + def close(self) -> None: + self._loop.call_soon_threadsafe(self._loop.stop) + + +class ThreadMetaWriter: + """Writes/updates ``threads_meta`` rows for the local default user. + + All methods swallow errors: persistence visibility is a convenience, never a + reason to break the conversation. + """ + + def __init__(self, loop: _LoopThread, store: Any) -> None: + self._loop = loop + self._store = store + self.user_id = DEFAULT_USER_ID + + @property + def enabled(self) -> bool: + return self._store is not None + + def ensure_created(self, thread_id: str, *, assistant_id: str | None = None, metadata: dict | None = None) -> None: + if not self._store or not thread_id: + return + try: + self._loop.run(self._ensure_created(thread_id, assistant_id, metadata)) + except Exception: # noqa: BLE001 - best-effort + pass + + async def _ensure_created(self, thread_id: str, assistant_id: str | None, metadata: dict | None) -> None: + existing = await self._store.get(thread_id, user_id=self.user_id) + if existing is None: + await self._store.create( + thread_id, + assistant_id=assistant_id, + user_id=self.user_id, + metadata=metadata or {"source": "tui"}, + ) + + def set_title(self, thread_id: str, title: str) -> None: + if not self._store or not thread_id or not title: + return + try: + self._loop.run(self._store.update_display_name(thread_id, title, user_id=self.user_id)) + except Exception: # noqa: BLE001 - best-effort + pass + + +def build_persistence() -> tuple[_LoopThread, ThreadMetaWriter]: + """Initialise the shared engine on a background loop and return a writer. + + Returns a ``ThreadMetaWriter`` that is a no-op when the configured database + backend is ``memory`` (no SQL session factory) or initialisation fails. + """ + loop = _LoopThread() + store = None + try: + from deerflow.config.app_config import get_app_config + from deerflow.persistence.engine import get_session_factory, init_engine_from_config + from deerflow.persistence.thread_meta import make_thread_store + + config = get_app_config() + loop.run(init_engine_from_config(config.database)) + session_factory = get_session_factory() + if session_factory is not None: + store = make_thread_store(session_factory) + except Exception: # noqa: BLE001 - degrade to no-op writer + store = None + return loop, ThreadMetaWriter(loop, store) diff --git a/backend/packages/harness/deerflow/tui/render.py b/backend/packages/harness/deerflow/tui/render.py new file mode 100644 index 000000000..195d9ced9 --- /dev/null +++ b/backend/packages/harness/deerflow/tui/render.py @@ -0,0 +1,152 @@ +"""Pure Rich renderers for the transcript, status line and header. + +These take a :class:`ViewState` (plus light session info) and return Rich +renderables. No Textual import, so they can be unit-tested by rendering to a +Rich ``Console`` and inspecting the text. +""" + +from __future__ import annotations + +from rich.console import Group, RenderableType +from rich.markdown import Markdown +from rich.table import Table +from rich.text import Text + +from .theme import SYMBOLS, THEME +from .view_state import AssistantRow, Row, SystemRow, ToolRow, UserRow, ViewState + +_EMPTY_HINT = "Type a message to begin. Press / for commands, ? for help." + +_TOOL_STATUS_SYMBOL = {"running": SYMBOLS["running"], "ok": SYMBOLS["ok"], "error": SYMBOLS["error"]} +_TOOL_STATUS_STYLE = {"running": THEME.warning, "ok": THEME.accent, "error": THEME.error} + + +def render_transcript(state: ViewState) -> RenderableType: + if not state.rows: + return Text(_EMPTY_HINT, style=f"italic {THEME.dim}") + + # Only the message being generated right now renders as plain text (to avoid + # Markdown reflow jumpiness). Every other message — all history — renders as + # Markdown, so a follow-up turn never reverts prior answers to raw text. + blocks: list[RenderableType] = [] + for row in state.rows: + streaming_now = state.streaming and isinstance(row, AssistantRow) and row.id is not None and row.id == state.streaming_id + blocks.append(render_row(row, as_markdown=not streaming_now)) + blocks.append(Text("")) # one blank line between blocks for breathing room + return Group(*blocks[:-1]) + + +def render_row(row: Row, *, as_markdown: bool = True) -> RenderableType: + if isinstance(row, UserRow): + text = Text() + text.append(f"{SYMBOLS['user']} ", style=f"bold {THEME.user}") + text.append(row.text, style=f"bold {THEME.user}") + return text + + if isinstance(row, AssistantRow): + if not row.error and as_markdown and row.text.strip(): + return _assistant_markdown(row.text) + style = THEME.error if row.error else THEME.assistant + text = Text() + text.append(f"{SYMBOLS['assistant']} ", style=f"bold {style}") + text.append(row.text or "…", style=style) + return text + + if isinstance(row, ToolRow): + return _render_tool(row) + + if isinstance(row, SystemRow): + style = THEME.error if row.tone == "error" else THEME.dim + return Text(f"{SYMBOLS['system']} {row.text}", style=f"italic {style}") + + return Text(str(row)) + + +def _assistant_markdown(text: str) -> RenderableType: + """A ``●`` speaker marker aligned to the top of the Markdown-rendered body.""" + grid = Table.grid(padding=(0, 1, 0, 0)) + grid.add_column(width=1, vertical="top") # marker + grid.add_column(ratio=1) # markdown body + grid.add_row( + Text(SYMBOLS["assistant"], style=f"bold {THEME.assistant}"), + Markdown(text), + ) + return grid + + +def _render_tool(row: ToolRow) -> RenderableType: + head = Text() + head.append(f" {SYMBOLS['tool']} ", style=THEME.tool) + head.append(row.title, style=f"bold {THEME.tool}") + if row.detail: + head.append(f" {row.detail}", style=THEME.dim) + head.append(f" {_TOOL_STATUS_SYMBOL[row.status]}", style=_TOOL_STATUS_STYLE[row.status]) + + if row.result and row.status != "running": + return Group(head, Text(f" {row.result}", style=THEME.dim)) + return head + + +def render_status(state: ViewState, *, model: str, thread_label: str, spinner: str = "", elapsed: str = "") -> Text: + text = Text(no_wrap=True, overflow="ellipsis") + if state.streaming: + text.append(f"{spinner} working", style=f"bold {THEME.warning}") + else: + text.append("● ready", style=f"bold {THEME.accent}") + if state.title: + text.append(" ") + text.append(state.title, style=f"italic {THEME.muted}") + text.append(" ") + text.append(model or "default", style=THEME.primary) + text.append(" ") + text.append(thread_label, style=THEME.muted) + if elapsed: + text.append(" ") + text.append(elapsed, style=THEME.dim) + usage = state.usage or {} + total = usage.get("total_tokens") + if total: + text.append(" ") + text.append(f"{total} tok", style=THEME.dim) + if state.streaming: + text.append(" esc interrupt", style=THEME.dim) + return text + + +def render_palette(items, index: int, limit: int = 8) -> RenderableType: + """Render the slash-command picker: a windowed list with one highlighted row.""" + if not items: + return Text("") + index = max(0, min(index, len(items) - 1)) + start = index - limit + 1 if index >= limit else 0 + window = items[start : start + limit] + selected_in_window = index - start + + lines: list[RenderableType] = [] + for i, command in enumerate(window): + selected = i == selected_in_window + line = Text(no_wrap=True, overflow="ellipsis") + line.append("▌ " if selected else " ", style=THEME.primary) + line.append(f"/{command.name}", style=(f"bold {THEME.primary}" if selected else THEME.text)) + if command.description: + line.append(" ") + line.append(command.description, style=THEME.dim) + lines.append(line) + if len(items) > limit: + lines.append(Text(f" … {len(items) - limit} more", style=f"italic {THEME.dim}")) + return Group(*lines) + + +def render_header(*, model: str, thread_label: str, cwd: str, skills: int = 0) -> Text: + text = Text(no_wrap=True, overflow="ellipsis") + text.append(" DeerFlow ", style=f"bold {THEME.bg} on {THEME.primary}") + text.append(" ") + text.append(model or "default", style=f"bold {THEME.primary}") + text.append(" · ", style=THEME.dim) + text.append(thread_label, style=THEME.muted) + text.append(" · ", style=THEME.dim) + text.append(cwd, style=THEME.dim) + if skills: + text.append(" · ", style=THEME.dim) + text.append(f"{skills} skills", style=THEME.dim) + return text diff --git a/backend/packages/harness/deerflow/tui/runtime.py b/backend/packages/harness/deerflow/tui/runtime.py new file mode 100644 index 000000000..6b5568461 --- /dev/null +++ b/backend/packages/harness/deerflow/tui/runtime.py @@ -0,0 +1,130 @@ +"""Runtime bridge between ``DeerFlowClient`` streaming and the view-state reducer. + +Two layers, both kept free of Textual: + +* :func:`translate` — pure: one ``StreamEvent`` -> zero or more reducer actions. +* :func:`stream_actions` — drives ``client.stream()`` and yields a bracketed + action sequence (``RunStarted`` … translated actions … ``RunEnded``), turning + model errors into an ``AssistantError`` row instead of crashing. + +The Textual app runs :func:`stream_actions` in a worker thread and applies each +yielded action to the reducer on the UI thread. +""" + +from __future__ import annotations + +from collections.abc import Iterator +from typing import Any, Protocol + +from .view_state import ( + Action, + AssistantDelta, + AssistantError, + RunEnded, + RunStarted, + ThreadTitle, + ToolResult, + ToolStarted, +) + + +class _StreamEventLike(Protocol): + type: str + data: dict + + +class _ClientLike(Protocol): + def stream(self, message: str, *, thread_id: str | None = None, **kwargs: Any) -> Iterator[Any]: + """Yield streaming events for *message* (see ``DeerFlowClient.stream``).""" + + +def translate(event: _StreamEventLike) -> list[Action]: + """Map a single ``StreamEvent`` to reducer actions. Pure.""" + if event.type == "messages-tuple": + return _translate_message(event.data) + if event.type == "end": + usage = event.data.get("usage") if isinstance(event.data, dict) else None + return [RunEnded(usage=usage)] + if event.type == "values" and isinstance(event.data, dict): + title = event.data.get("title") + if isinstance(title, str) and title.strip(): + return [ThreadTitle(title=title.strip())] + return [] + # "custom" events are not rendered incrementally. + return [] + + +def _translate_message(data: Any) -> list[Action]: + if not isinstance(data, dict): + return [] + + message_type = data.get("type") + actions: list[Action] = [] + + if message_type == "ai": + text = _extract_text(data.get("content")) + if text: + actions.append(AssistantDelta(id=_as_str(data.get("id")), text=text)) + for tool_call in data.get("tool_calls") or []: + if not isinstance(tool_call, dict): + continue + actions.append( + ToolStarted( + tool_call_id=_as_str(tool_call.get("id")), + tool_name=_as_str(tool_call.get("name")), + args=tool_call.get("args") or {}, + ) + ) + elif message_type == "tool": + is_error = bool(data.get("is_error")) or data.get("status") == "error" + actions.append( + ToolResult( + tool_call_id=_as_str(data.get("tool_call_id")), + content=_extract_text(data.get("content")), + is_error=is_error, + tool_name=_as_str(data.get("name")), + ) + ) + + return actions + + +def _as_str(value: Any) -> str: + # Provider stream chunks can carry an explicit ``None`` id/name (the key is + # present, so ``.get(k, "")`` would return None, and ``str(None) == "None"`` + # — a truthy value that would defeat the empty-id guard downstream). + return "" if value is None else str(value) + + +def stream_actions(client: _ClientLike, message: str, *, thread_id: str | None = None, **kwargs: Any) -> Iterator[Action]: + """Yield a bracketed action stream for one agent run. + + Always begins with ``RunStarted`` and ends with ``RunEnded`` (even on error, + where an ``AssistantError`` row is emitted first). + """ + yield RunStarted() + try: + for event in client.stream(message, thread_id=thread_id, **kwargs): + yield from translate(event) + if event.type == "end": + return # RunEnded already emitted by translate() + yield RunEnded() + except Exception as exc: # noqa: BLE001 - surface any model/runtime error in-UI + yield AssistantError(str(exc) or exc.__class__.__name__) + yield RunEnded() + + +def _extract_text(content: Any) -> str: + if content is None: + return "" + if isinstance(content, str): + return content + if isinstance(content, list): + parts: list[str] = [] + for block in content: + if isinstance(block, str): + parts.append(block) + elif isinstance(block, dict) and block.get("type") == "text" and isinstance(block.get("text"), str): + parts.append(block["text"]) + return "".join(parts) + return str(content) diff --git a/backend/packages/harness/deerflow/tui/session.py b/backend/packages/harness/deerflow/tui/session.py new file mode 100644 index 000000000..e1effe32a --- /dev/null +++ b/backend/packages/harness/deerflow/tui/session.py @@ -0,0 +1,92 @@ +"""Embedded session wiring for the TUI. + +Owns construction of the ``DeerFlowClient`` (with a persistent checkpointer), +thread resolution for ``--continue`` / ``--resume`` (by id **or** title), and the +shared-persistence writer that makes terminal sessions visible in the Web UI (see +``deerflow.tui.persistence``). +""" + +from __future__ import annotations + +from dataclasses import dataclass +from typing import TYPE_CHECKING + +if TYPE_CHECKING: # avoid importing the heavy client during pure planning + from deerflow.client import DeerFlowClient + + from .cli import LaunchPlan + from .persistence import ThreadMetaWriter, _LoopThread + + +@dataclass +class Session: + client: DeerFlowClient + writer: ThreadMetaWriter | None = None + _loop: _LoopThread | None = None + + def resolve_thread(self, plan: LaunchPlan) -> str | None: + """Resolve the thread id to run against, honoring --resume / --continue.""" + if plan.thread_id: + return self.resolve_ref(plan.thread_id) + if plan.continue_recent: + threads = self.client.list_threads(limit=1).get("thread_list", []) + if threads: + return threads[0].get("thread_id") + return None + + def resolve_ref(self, ref: str) -> str: + """Resolve a thread reference (id or title) to a thread id. + + Matches an existing thread by id first, then by exact title. Falls back to + the literal ref (treated as an id) when nothing matches, so an unknown id + still continues/creates that namespace. + """ + try: + threads = self.client.list_threads(limit=100).get("thread_list", []) + except Exception: # noqa: BLE001 - resolution is best-effort + return ref + if any(t.get("thread_id") == ref for t in threads): + return ref + for thread in threads: + if (thread.get("title") or "") == ref: + return thread.get("thread_id") or ref + return ref + + def recent_threads(self, limit: int = 20) -> list[dict]: + return self.client.list_threads(limit=limit).get("thread_list", []) + + def close(self) -> None: + """Stop the background DB loop and dispose the engine (best-effort).""" + loop = self._loop + if loop is None: + return + self._loop = None + try: + from deerflow.persistence.engine import close_engine + + loop.run(close_engine()) + except Exception: # noqa: BLE001 - teardown is best-effort + pass + loop.close() + + +def open_session(persistence: bool = True) -> Session: + """Build an embedded session backed by the configured checkpointer. + + ``persistence`` controls the shared ``threads_meta`` writer (and its background + DB loop/engine). Headless one-shots never use the writer, so they pass + ``persistence=False`` to avoid standing up an event loop + connection pool only + to discard it. + """ + from deerflow.client import DeerFlowClient + from deerflow.runtime.checkpointer.provider import get_checkpointer + + checkpointer = get_checkpointer() + client = DeerFlowClient(checkpointer=checkpointer) + if not persistence: + return Session(client=client) + + from .persistence import build_persistence + + loop, writer = build_persistence() + return Session(client=client, writer=writer, _loop=loop) diff --git a/backend/packages/harness/deerflow/tui/theme.py b/backend/packages/harness/deerflow/tui/theme.py new file mode 100644 index 000000000..4084ed324 --- /dev/null +++ b/backend/packages/harness/deerflow/tui/theme.py @@ -0,0 +1,42 @@ +"""Restrained colour + symbol palette for the TUI. + +A Tokyo-Night-ish palette: calm, readable on dark terminals, with a few accent +hues to distinguish speakers and tool state. Rich-compatible hex colours so the +same constants drive both Rich renderables and Textual CSS variables. +""" + +from __future__ import annotations + +from dataclasses import dataclass + + +@dataclass(frozen=True) +class Theme: + bg: str = "#1a1b26" + panel: str = "#1f2335" + border: str = "#2f334d" + text: str = "#c0caf5" + dim: str = "#565f89" + muted: str = "#737aa2" + + primary: str = "#7dcfff" # headings / app accent + user: str = "#7aa2f7" # user speaker + assistant: str = "#c0caf5" # assistant speaker + tool: str = "#bb9af7" # tool activity + accent: str = "#9ece6a" # success / ok + warning: str = "#e0af68" # running / caution + error: str = "#f7768e" # errors + + +THEME = Theme() + +SYMBOLS = { + "user": "›", + "assistant": "●", + "tool": "⚙", + "running": "◐", + "ok": "✓", + "error": "✗", + "system": "·", + "spinner": ["⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"], +} diff --git a/backend/packages/harness/deerflow/tui/view_state.py b/backend/packages/harness/deerflow/tui/view_state.py new file mode 100644 index 000000000..178e55b99 --- /dev/null +++ b/backend/packages/harness/deerflow/tui/view_state.py @@ -0,0 +1,306 @@ +"""Pure view-state reducer for the DeerFlow TUI. + +This module has **no** Textual / rendering dependency. It models the visible +conversation as an immutable list of typed rows and a small set of actions, +and exposes a single pure ``reduce(state, action) -> state`` function. + +Keeping this layer pure makes the interesting behaviour (streaming deltas, +tool cards, error rows) testable with plain ``pytest`` and a handful of +synthetic actions, independent of any terminal. + +The runtime bridge (``deerflow.tui.runtime``) is responsible for translating +``DeerFlowClient`` ``StreamEvent`` objects into these actions; the Textual app +renders ``ViewState`` into widgets. Both sides depend on this module, not on +each other. +""" + +from __future__ import annotations + +from dataclasses import dataclass, field, replace +from typing import Literal + +from .message_format import format_tool_detail, format_tool_result, summarize_tool_title + +# --------------------------------------------------------------------------- # +# Rows — the immutable units the transcript is built from. +# --------------------------------------------------------------------------- # + + +@dataclass(frozen=True) +class UserRow: + text: str + kind: Literal["user"] = "user" + + +@dataclass(frozen=True) +class AssistantRow: + text: str + id: str | None = None + error: bool = False + kind: Literal["assistant"] = "assistant" + + +@dataclass(frozen=True) +class ToolRow: + tool_call_id: str + tool_name: str + title: str + detail: str = "" + result: str = "" + status: Literal["running", "ok", "error"] = "running" + kind: Literal["tool"] = "tool" + + +@dataclass(frozen=True) +class SystemRow: + text: str + tone: Literal["info", "error"] = "info" + kind: Literal["system"] = "system" + + +Row = UserRow | AssistantRow | ToolRow | SystemRow + + +# --------------------------------------------------------------------------- # +# Actions — the only ways the state can change. +# --------------------------------------------------------------------------- # + + +@dataclass(frozen=True) +class UserSubmitted: + text: str + + +@dataclass(frozen=True) +class RunStarted: + pass + + +@dataclass(frozen=True) +class RunEnded: + usage: dict | None = None + + +@dataclass(frozen=True) +class AssistantDelta: + id: str + text: str + + +@dataclass(frozen=True) +class AssistantError: + text: str + + +@dataclass(frozen=True) +class ToolStarted: + tool_call_id: str + tool_name: str + args: dict = field(default_factory=dict) + + +@dataclass(frozen=True) +class ToolResult: + tool_call_id: str + content: str + is_error: bool = False + tool_name: str = "" + + +@dataclass(frozen=True) +class SystemMessage: + text: str + tone: Literal["info", "error"] = "info" + + +@dataclass(frozen=True) +class ThreadTitle: + title: str + + +@dataclass(frozen=True) +class ClearRows: + pass + + +Action = UserSubmitted | RunStarted | RunEnded | AssistantDelta | AssistantError | ToolStarted | ToolResult | SystemMessage | ThreadTitle | ClearRows + + +# --------------------------------------------------------------------------- # +# State. +# --------------------------------------------------------------------------- # + + +@dataclass(frozen=True) +class ViewState: + rows: tuple[Row, ...] = () + streaming: bool = False + usage: dict | None = None + title: str | None = None + # Id of the message currently being generated this turn. Only this row renders + # as plain text while streaming; everything else (history) stays Markdown. + streaming_id: str | None = None + + +def initial_state(rows: tuple[Row, ...] = ()) -> ViewState: + return ViewState(rows=tuple(rows)) + + +# --------------------------------------------------------------------------- # +# Reducer. +# --------------------------------------------------------------------------- # + + +def _append(state: ViewState, row: Row) -> ViewState: + return replace(state, rows=state.rows + (row,)) + + +def reduce(state: ViewState, action: Action) -> ViewState: + """Return a new ``ViewState`` after applying ``action``. Pure.""" + + if isinstance(action, UserSubmitted): + return _append(state, UserRow(text=action.text)) + + if isinstance(action, RunStarted): + # New turn: no message is actively streaming yet (the client re-emits + # prior messages first; those must not be treated as the active one). + return replace(state, streaming=True, streaming_id=None) + + if isinstance(action, RunEnded): + return replace( + state, + streaming=False, + streaming_id=None, + usage=action.usage if action.usage is not None else state.usage, + ) + + if isinstance(action, AssistantDelta): + return _apply_assistant_delta(state, action) + + if isinstance(action, AssistantError): + return _append(state, AssistantRow(text=action.text, error=True)) + + if isinstance(action, ToolStarted): + return _apply_tool_started(state, action) + + if isinstance(action, ToolResult): + return _apply_tool_result(state, action) + + if isinstance(action, SystemMessage): + return _append(state, SystemRow(text=action.text, tone=action.tone)) + + if isinstance(action, ThreadTitle): + return replace(state, title=action.title) + + if isinstance(action, ClearRows): + return replace(state, rows=(), title=None, streaming_id=None) + + return state + + +def _apply_assistant_delta(state: ViewState, action: AssistantDelta) -> ViewState: + """Update the assistant row with this id (anywhere in the transcript), or + start a new one. + + On a thread with history, the client re-emits every prior message on each + new turn (its dedup is per-turn), and a re-emitted *older* message can arrive + after a newer one has started — so we must match by id across the whole + transcript, not just the most recent assistant row, or prior answers get + duplicated. + + Updates also merge by content rather than blindly concatenating, to absorb + full re-sends / cumulative snapshots vs. genuine incremental deltas: + + * new text == accumulated, or starts with it -> cumulative/re-send: replace + * accumulated starts with new text -> stale/shorter re-send: keep + * otherwise -> a real delta: append + """ + + rows = list(state.rows) + for i, row in enumerate(rows): + # ``not row.error``: error rows are appended without an id, so they never + # match here anyway — the guard is belt-and-suspenders to keep an error + # row from being merged into if a future change ever gives it an id. + if isinstance(row, AssistantRow) and row.id == action.id and not row.error: + merged = _merge_stream_text(row.text, action.text) + if merged == row.text: + # No-op re-send (e.g. a values snapshot re-emitting history) — + # don't mark this as the actively-streaming message. + return state + rows[i] = replace(row, text=merged) + return _mark_streaming(replace(state, rows=tuple(rows)), action.id) + return _mark_streaming(_append(state, AssistantRow(text=action.text, id=action.id)), action.id) + + +def _mark_streaming(state: ViewState, message_id: str) -> ViewState: + """Record the actively-streaming message id (only while a run is active).""" + if state.streaming: + return replace(state, streaming_id=message_id) + return state + + +def _merge_stream_text(existing: str, incoming: str) -> str: + if not existing: + return incoming + if incoming.startswith(existing): + return incoming # cumulative snapshot or exact full re-send + if existing.startswith(incoming): + return existing # shorter/stale re-send + return existing + incoming # genuine incremental delta + + +def _apply_tool_started(state: ViewState, action: ToolStarted) -> ViewState: + """Create or update a tool card, de-duplicated by ``tool_call_id``. + + Streaming tool calls arrive as multiple chunks for one call id (name first, + then growing arguments), and the client may re-emit the call via a values + snapshot. Chunks with no id are argument-fragment noise and are dropped. + """ + if not action.tool_call_id: + return state + + rows = list(state.rows) + for i, row in enumerate(rows): + if isinstance(row, ToolRow) and row.tool_call_id == action.tool_call_id: + name = action.tool_name or row.tool_name + detail = format_tool_detail(name, action.args) or row.detail + rows[i] = replace(row, tool_name=name, title=summarize_tool_title(name), detail=detail) + return replace(state, rows=tuple(rows)) + + return _append( + state, + ToolRow( + tool_call_id=action.tool_call_id, + tool_name=action.tool_name, + title=summarize_tool_title(action.tool_name), + detail=format_tool_detail(action.tool_name, action.args), + status="running", + ), + ) + + +def _apply_tool_result(state: ViewState, action: ToolResult) -> ViewState: + if not action.tool_call_id: + return state + + rows = list(state.rows) + for i, row in enumerate(rows): + if isinstance(row, ToolRow) and row.tool_call_id == action.tool_call_id: + rows[i] = replace( + row, + status="error" if action.is_error else "ok", + result=format_tool_result(action.content), + ) + return replace(state, rows=tuple(rows)) + + # No matching tool card (started chunks missed) -> surface the result anyway. + return _append( + state, + ToolRow( + tool_call_id=action.tool_call_id, + tool_name=action.tool_name, + title=summarize_tool_title(action.tool_name), + status="error" if action.is_error else "ok", + result=format_tool_result(action.content), + ), + ) diff --git a/backend/packages/harness/deerflow/tui/widgets/__init__.py b/backend/packages/harness/deerflow/tui/widgets/__init__.py new file mode 100644 index 000000000..20536067c --- /dev/null +++ b/backend/packages/harness/deerflow/tui/widgets/__init__.py @@ -0,0 +1 @@ +"""Textual widgets for the DeerFlow TUI.""" diff --git a/backend/packages/harness/deerflow/tui/widgets/composer.py b/backend/packages/harness/deerflow/tui/widgets/composer.py new file mode 100644 index 000000000..48049ae51 --- /dev/null +++ b/backend/packages/harness/deerflow/tui/widgets/composer.py @@ -0,0 +1,23 @@ +"""Composer input with a wide-character (CJK) cursor fix. + +Textual's ``Input._cursor_offset`` adds an unconditional ``+1`` when the cursor +is at the end of the value. After double-width (CJK) characters that overshoots +by one cell, which misplaces the *hardware / IME* cursor — the visible drift when +typing Chinese in terminals such as iTerm2. (The on-screen block cursor is drawn +separately in ``render_line`` via character-index styling and is unaffected; this +only corrects the terminal cursor anchor that the IME candidate window follows.) + +English input never exercises this because it doesn't go through an IME, which is +why the drift only shows up for CJK. +""" + +from __future__ import annotations + +from textual.widgets import Input + + +class ComposerInput(Input): + @property + def _cursor_offset(self) -> int: + # True cell offset of the cursor, without Textual's end-of-value +1. + return self._position_to_cell(self.cursor_position) diff --git a/backend/packages/harness/pyproject.toml b/backend/packages/harness/pyproject.toml index a4bc6b28f..20e3a9f42 100644 --- a/backend/packages/harness/pyproject.toml +++ b/backend/packages/harness/pyproject.toml @@ -39,7 +39,13 @@ dependencies = [ "cryptography>=48.0.1", ] +[project.scripts] +deerflow = "deerflow.tui.cli:main" + [project.optional-dependencies] +# Terminal workbench (TUI). Kept optional so the core harness install stays lean; +# the `deerflow` console script degrades to headless help when textual is absent. +tui = ["textual>=0.80"] # GroundRoute needs no extra packages (httpx is already a core dependency). This # empty extra exists so the documented `uv add 'deerflow-harness[groundroute]'` # install command resolves cleanly without an "unknown extra" warning. diff --git a/backend/pyproject.toml b/backend/pyproject.toml index 8560563a1..0b4ca357a 100644 --- a/backend/pyproject.toml +++ b/backend/pyproject.toml @@ -34,6 +34,9 @@ dev = [ "pytest>=9.0.3", "pytest-asyncio>=1.3.0", "ruff>=0.14.11", + # TUI runtime dep (also declared as the deerflow-harness[tui] extra); kept in + # the dev group so the terminal workbench can be run and tested locally / in CI. + "textual>=0.80", ] [tool.pytest.ini_options] diff --git a/backend/tests/test_tui_app.py b/backend/tests/test_tui_app.py new file mode 100644 index 000000000..d9848540e --- /dev/null +++ b/backend/tests/test_tui_app.py @@ -0,0 +1,148 @@ +"""Integration tests for the Textual app via the pilot harness. + +Uses a fake in-process session so no real model is invoked. Exercises the full +loop: keypress -> submit -> worker thread -> stream_actions -> reducer -> state. +""" + +import asyncio + +import pytest + +from deerflow.client import StreamEvent +from deerflow.tui.app import DeerFlowTUI +from deerflow.tui.cli import LaunchPlan + + +class _FakeClient: + def list_models(self): + return {"models": [{"name": "fake-model", "display_name": "Fake Model"}]} + + def list_skills(self, enabled_only=False): + return {"skills": [{"name": "tdd", "enabled": True}]} + + def stream(self, message, *, thread_id=None, **kwargs): + yield StreamEvent(type="messages-tuple", data={"type": "ai", "content": "Hello ", "id": "m1"}) + yield StreamEvent(type="messages-tuple", data={"type": "ai", "content": "world", "id": "m1"}) + yield StreamEvent(type="end", data={"usage": {"total_tokens": 3}}) + + +class _FakeSession: + def __init__(self): + self.client = _FakeClient() + + def resolve_thread(self, plan): + return None + + +async def _wait_until(predicate, pilot, *, timeout=3.0): + deadline = 0.0 + while deadline < timeout: + await pilot.pause() + if predicate(): + return True + await asyncio.sleep(0.02) + deadline += 0.02 + return predicate() + + +@pytest.mark.asyncio +async def test_app_runs_a_turn_and_renders_streamed_assistant(): + app = DeerFlowTUI(_FakeSession(), LaunchPlan(mode="tui")) + async with app.run_test() as pilot: + await pilot.pause() + await pilot.press("h", "i") + await pilot.press("enter") + await _wait_until( + lambda: not app._streaming and any(r.kind == "assistant" for r in app.state.rows), + pilot, + ) + + kinds = [r.kind for r in app.state.rows] + assert "user" in kinds + assert "assistant" in kinds + assistant = [r for r in app.state.rows if r.kind == "assistant"][-1] + assert assistant.text == "Hello world" + assert app.state.usage == {"total_tokens": 3} + + +@pytest.mark.asyncio +async def test_app_assigns_thread_id_on_first_send(): + app = DeerFlowTUI(_FakeSession(), LaunchPlan(mode="tui")) + async with app.run_test() as pilot: + await pilot.pause() + assert app._conv_thread_id is None + await pilot.press("y", "o") + await pilot.press("enter") + await _wait_until(lambda: app._conv_thread_id is not None, pilot) + assert app._conv_thread_id is not None + + +@pytest.mark.asyncio +async def test_help_command_renders_system_row_without_calling_agent(): + app = DeerFlowTUI(_FakeSession(), LaunchPlan(mode="tui")) + async with app.run_test() as pilot: + await pilot.pause() + for ch in "/help": + await pilot.press(ch) + await pilot.press("enter") + await _wait_until(lambda: any(r.kind == "system" for r in app.state.rows), pilot) + + assert any(r.kind == "system" for r in app.state.rows) + # /help must not produce a user turn or start streaming. + assert not any(r.kind == "user" for r in app.state.rows) + + +@pytest.mark.asyncio +async def test_up_arrow_recalls_previous_input_from_history(): + app = DeerFlowTUI(_FakeSession(), LaunchPlan(mode="tui")) + async with app.run_test() as pilot: + await pilot.pause() + for ch in "remember me": + await pilot.press("space" if ch == " " else ch) + await pilot.press("enter") + await _wait_until(lambda: any(r.kind == "user" for r in app.state.rows), pilot) + # Composer is empty after submit; Up should recall the last entry. + await pilot.press("up") + await pilot.pause() + assert app.query_one("#composer").value == "remember me" + + +@pytest.mark.asyncio +async def test_escape_interrupts_an_active_run(): + app = DeerFlowTUI(_FakeSession(), LaunchPlan(mode="tui")) + async with app.run_test() as pilot: + await pilot.pause() + app._streaming = True + app._refresh_status() + await pilot.press("escape") + await pilot.pause() + assert app._streaming is False + assert any(r.kind == "system" and "Interrupt" in r.text for r in app.state.rows) + + +@pytest.mark.asyncio +async def test_tab_keeps_focus_on_composer_when_palette_closed(): + app = DeerFlowTUI(_FakeSession(), LaunchPlan(mode="tui")) + async with app.run_test() as pilot: + await pilot.pause() + composer = app.query_one("#composer") + assert app.focused is composer + await pilot.press("tab") + await pilot.pause() + # Tab must not move focus off the composer to the scroll region. + assert app.focused is composer + + +@pytest.mark.asyncio +async def test_unknown_command_shows_error_system_row(): + app = DeerFlowTUI(_FakeSession(), LaunchPlan(mode="tui")) + async with app.run_test() as pilot: + await pilot.pause() + for ch in "/nope": + await pilot.press(ch) + await pilot.press("enter") + await _wait_until( + lambda: any(r.kind == "system" and getattr(r, "tone", "") == "error" for r in app.state.rows), + pilot, + ) + assert any(r.kind == "system" and r.tone == "error" for r in app.state.rows) diff --git a/backend/tests/test_tui_cli.py b/backend/tests/test_tui_cli.py new file mode 100644 index 000000000..47740c9b8 --- /dev/null +++ b/backend/tests/test_tui_cli.py @@ -0,0 +1,106 @@ +"""Tests for TUI launch-mode planning + arg parsing (pure, no Textual).""" + +from deerflow.tui.cli import LaunchPlan, plan_launch + + +def plan(argv, *, stdin_tty=True, stdout_tty=True, env=None): + return plan_launch(argv, stdin_isatty=stdin_tty, stdout_isatty=stdout_tty, env=env or {}) + + +def test_bare_command_on_tty_launches_tui(): + p = plan([]) + assert p.mode == "tui" + assert p.forced_tui is False + + +def test_non_tty_with_no_message_falls_back_to_headless_help(): + p = plan([], stdin_tty=False, stdout_tty=False) + assert p.mode == "headless-help" + assert p.reason + + +def test_print_with_message(): + p = plan(["--print", "summarize this repo"]) + assert p.mode == "print" + assert p.message == "summarize this repo" + assert p.read_stdin is False + + +def test_print_without_value_reads_stdin_when_piped(): + p = plan(["--print"], stdin_tty=False) + assert p.mode == "print" + assert p.read_stdin is True + + +def test_json_mode(): + p = plan(["--json", "hello"]) + assert p.mode == "json" + assert p.message == "hello" + + +def test_force_tui_even_without_tty(): + p = plan(["--tui"], stdin_tty=False, stdout_tty=False) + assert p.mode == "tui" + assert p.forced_tui is True + + +def test_env_var_forces_tui(): + p = plan([], stdin_tty=False, stdout_tty=False, env={"DEER_FLOW_TUI": "1"}) + assert p.mode == "tui" + + +def test_cli_flag_with_message_runs_print(): + p = plan(["--cli", "do", "this", "thing"]) + assert p.mode == "print" + assert p.message == "do this thing" + + +def test_cli_flag_without_message_is_headless_help(): + p = plan(["--cli"]) + assert p.mode == "headless-help" + + +def test_cli_continue_runs_headless_reading_stdin(): + p = plan(["--cli", "--continue"], stdin_tty=False) + assert p.mode == "print" + assert p.read_stdin is True + assert p.continue_recent is True + + +def test_cli_with_piped_stdin_runs_headless(): + p = plan(["--cli"], stdin_tty=False) + assert p.mode == "print" + assert p.read_stdin is True + + +def test_continue_recent_flag(): + p = plan(["--continue"]) + assert p.mode == "tui" + assert p.continue_recent is True + + +def test_resume_specific_thread(): + p = plan(["--resume", "thread-abc"]) + assert p.mode == "tui" + assert p.thread_id == "thread-abc" + + +def test_chat_subcommand_is_accepted(): + p = plan(["chat"]) + assert p.mode == "tui" + + +def test_chat_subcommand_with_print(): + p = plan(["chat", "--print", "hi"]) + assert p.mode == "print" + assert p.message == "hi" + + +def test_positional_message_becomes_initial_tui_prompt(): + p = plan(["explain", "the", "codebase"]) + assert p.mode == "tui" + assert p.message == "explain the codebase" + + +def test_plan_is_a_launch_plan_instance(): + assert isinstance(plan([]), LaunchPlan) diff --git a/backend/tests/test_tui_cli_main.py b/backend/tests/test_tui_cli_main.py new file mode 100644 index 000000000..efb5a6826 --- /dev/null +++ b/backend/tests/test_tui_cli_main.py @@ -0,0 +1,48 @@ +"""Integration tests for ``main`` dispatch (headless paths), with a fake session.""" + +import json + +from deerflow.client import StreamEvent +from deerflow.tui import cli + + +class _FakeClient: + def chat(self, message, *, thread_id=None, **kwargs): + return f"answer:{message}" + + def stream(self, message, *, thread_id=None, **kwargs): + yield StreamEvent(type="messages-tuple", data={"type": "ai", "content": "hi", "id": "m1"}) + yield StreamEvent(type="end", data={"usage": {"total_tokens": 1}}) + + +class _FakeSession: + def __init__(self): + self.client = _FakeClient() + + def resolve_thread(self, plan): + return None + + +def test_main_print_outputs_chat_answer(monkeypatch, capsys): + monkeypatch.setattr(cli, "_make_session", _FakeSession) + rc = cli.main(["--print", "hello"]) + assert rc == 0 + assert "answer:hello" in capsys.readouterr().out + + +def test_main_json_emits_ndjson_stream_events(monkeypatch, capsys): + monkeypatch.setattr(cli, "_make_session", _FakeSession) + rc = cli.main(["--json", "hello"]) + assert rc == 0 + lines = [ln for ln in capsys.readouterr().out.splitlines() if ln.strip()] + payloads = [json.loads(ln) for ln in lines] + assert payloads[0]["type"] == "messages-tuple" + assert payloads[-1]["type"] == "end" + + +def test_main_headless_help_returns_2_and_prints_usage(monkeypatch, capsys): + # On a TTY with no message and no piped stdin, --cli has nothing to run. + monkeypatch.setattr(cli.sys.stdin, "isatty", lambda: True) + rc = cli.main(["--cli"]) + assert rc == 2 + assert "deerflow" in capsys.readouterr().err diff --git a/backend/tests/test_tui_command_registry.py b/backend/tests/test_tui_command_registry.py new file mode 100644 index 000000000..151fd9176 --- /dev/null +++ b/backend/tests/test_tui_command_registry.py @@ -0,0 +1,94 @@ +"""Tests for the slash-command registry (pure).""" + +from deerflow.tui.command_registry import ( + BUILTIN_COMMANDS, + build_registry, + filter_commands, + resolve, +) + + +def _skills(): + return [ + {"name": "brainstorming", "description": "Explore ideas", "enabled": True}, + {"name": "tdd", "description": "Test driven dev", "enabled": True}, + {"name": "disabled-one", "description": "off", "enabled": False}, + ] + + +def test_build_registry_includes_all_builtins(): + registry = build_registry([]) + names = {c.name for c in registry} + for builtin in BUILTIN_COMMANDS: + assert builtin.name in names + + +def test_build_registry_adds_enabled_skill_commands_only(): + registry = build_registry(_skills()) + skill_names = {c.name for c in registry if c.category == "skill"} + assert "brainstorming" in skill_names + assert "tdd" in skill_names + assert "disabled-one" not in skill_names + + +def test_filter_empty_query_returns_all(): + registry = build_registry([]) + assert filter_commands(registry, "") == registry + + +def test_filter_matches_name_substring_case_insensitive(): + registry = build_registry([]) + results = filter_commands(registry, "MOD") + assert any(c.name == "model" for c in results) + + +def test_filter_matches_description(): + registry = build_registry(_skills()) + results = filter_commands(registry, "explore") + assert any(c.name == "brainstorming" for c in results) + + +def test_filter_ranks_prefix_matches_before_substring(): + registry = build_registry([]) + results = filter_commands(registry, "me") + # "memory" (prefix) should rank above a command that only contains "me" + names = [c.name for c in results] + assert "memory" in names + assert names.index("memory") == 0 + + +def test_resolve_plain_text_is_message(): + res = resolve("hello there") + assert res.kind == "message" + assert res.text == "hello there" + + +def test_resolve_builtin_command(): + res = resolve("/model") + assert res.kind == "builtin" + assert res.name == "model" + + +def test_resolve_builtin_with_args(): + res = resolve("/resume thread-123") + assert res.kind == "builtin" + assert res.name == "resume" + assert res.args == "thread-123" + + +def test_resolve_skill_activation(): + res = resolve("/tdd write the test first", skills=["tdd"]) + assert res.kind == "skill" + assert res.name == "tdd" + assert res.args == "write the test first" + + +def test_resolve_unknown_command(): + res = resolve("/definitely-not-a-command", skills=["tdd"]) + assert res.kind == "unknown" + assert res.name == "definitely-not-a-command" + + +def test_resolve_bare_slash_is_unknown_empty(): + res = resolve("/") + assert res.kind == "unknown" diff --git a/backend/tests/test_tui_composer.py b/backend/tests/test_tui_composer.py new file mode 100644 index 000000000..84cca12e0 --- /dev/null +++ b/backend/tests/test_tui_composer.py @@ -0,0 +1,46 @@ +"""Tests for the CJK-aware composer cursor offset.""" + +import pytest +from textual.app import App, ComposeResult + +from deerflow.tui.widgets.composer import ComposerInput + + +class _Harness(App): + def compose(self) -> ComposeResult: + yield ComposerInput(id="c") + + +@pytest.mark.asyncio +async def test_cursor_offset_after_cjk_has_no_off_by_one(): + app = _Harness() + async with app.run_test() as pilot: + await pilot.pause() + comp = app.query_one("#c", ComposerInput) + comp.value = "总结一下" # 4 wide chars = 8 cells + comp.cursor_position = len(comp.value) + # Stock Input would report 9 here (unconditional +1); the fix reports 8, + # so the hardware/IME cursor sits exactly after the last character. + assert comp._cursor_offset == 8 + + +@pytest.mark.asyncio +async def test_cursor_offset_mid_text_is_unchanged(): + app = _Harness() + async with app.run_test() as pilot: + await pilot.pause() + comp = app.query_one("#c", ComposerInput) + comp.value = "总结一下" + comp.cursor_position = 3 # not at end -> 3 wide chars = 6 cells + assert comp._cursor_offset == 6 + + +@pytest.mark.asyncio +async def test_cursor_offset_ascii_end_is_exact(): + app = _Harness() + async with app.run_test() as pilot: + await pilot.pause() + comp = app.query_one("#c", ComposerInput) + comp.value = "abcd" + comp.cursor_position = 4 + assert comp._cursor_offset == 4 diff --git a/backend/tests/test_tui_input_history.py b/backend/tests/test_tui_input_history.py new file mode 100644 index 000000000..34062d7a6 --- /dev/null +++ b/backend/tests/test_tui_input_history.py @@ -0,0 +1,61 @@ +"""Tests for bounded composer input history (pure).""" + +from deerflow.tui.input_history import InputHistory + + +def test_add_ignores_empty_and_whitespace(): + h = InputHistory() + h.add("") + h.add(" \n") + assert h.entries() == [] + + +def test_add_ignores_consecutive_duplicate(): + h = InputHistory() + h.add("same") + h.add("same") + assert h.entries() == ["same"] + + +def test_add_keeps_non_consecutive_duplicates(): + h = InputHistory() + h.add("a") + h.add("b") + h.add("a") + assert h.entries() == ["a", "b", "a"] + + +def test_add_bounds_to_limit_dropping_oldest(): + h = InputHistory(limit=3) + for text in ["1", "2", "3", "4"]: + h.add(text) + assert h.entries() == ["2", "3", "4"] + + +def test_up_walks_back_and_stops_at_oldest(): + h = InputHistory(["first", "second", "third"]) + assert h.up() == "third" + assert h.up() == "second" + assert h.up() == "first" + assert h.up() == "first" # clamped at oldest + + +def test_down_walks_forward_then_restores_draft(): + h = InputHistory(["first", "second"]) + assert h.up(draft="my draft") == "second" + assert h.up() == "first" + assert h.down() == "second" + assert h.down() == "my draft" # past newest -> stashed draft + + +def test_up_with_empty_history_returns_draft(): + h = InputHistory() + assert h.up(draft="keep") == "keep" + + +def test_add_resets_navigation_cursor(): + h = InputHistory(["old"]) + h.up() + h.add("new") + # After adding, up() starts again from the newest entry. + assert h.up() == "new" diff --git a/backend/tests/test_tui_message_format.py b/backend/tests/test_tui_message_format.py new file mode 100644 index 000000000..6575276f3 --- /dev/null +++ b/backend/tests/test_tui_message_format.py @@ -0,0 +1,53 @@ +"""Tests for compact tool-activity formatting helpers (pure).""" + +from deerflow.tui.message_format import ( + format_tool_detail, + format_tool_result, + summarize_tool_title, + truncate, +) + + +def test_summarize_known_tool_titles(): + assert summarize_tool_title("read_file") == "Read" + assert summarize_tool_title("write_file") == "Write" + assert summarize_tool_title("bash") == "Bash" + + +def test_summarize_unknown_tool_falls_back_to_humanized_name(): + assert summarize_tool_title("my_custom_tool") == "My Custom Tool" + + +def test_format_tool_detail_extracts_salient_arg(): + assert format_tool_detail("read_file", {"path": "src/app.py"}) == "src/app.py" + assert format_tool_detail("bash", {"command": "ls -la"}) == "ls -la" + assert format_tool_detail("web_search", {"query": "deerflow tui"}) == "deerflow tui" + + +def test_format_tool_detail_unknown_args_compact_json(): + detail = format_tool_detail("mystery", {"a": 1, "b": 2}) + assert "a" in detail and "1" in detail + + +def test_format_tool_detail_empty_args_is_empty_string(): + assert format_tool_detail("bash", {}) == "" + + +def test_truncate_short_text_unchanged(): + assert truncate("hello", 80) == "hello" + + +def test_truncate_long_text_adds_marker(): + out = truncate("x" * 200, 50) + assert len(out) <= 50 + 1 # marker char + assert out.endswith("…") + + +def test_format_tool_result_collapses_whitespace_and_truncates(): + result = format_tool_result("line1\n\n line2 \n", limit=80) + assert "line1" in result and "line2" in result + assert "\n" not in result + + +def test_format_tool_result_handles_non_string(): + assert format_tool_result({"ok": True}) != "" diff --git a/backend/tests/test_tui_overlays.py b/backend/tests/test_tui_overlays.py new file mode 100644 index 000000000..1c2682c0d --- /dev/null +++ b/backend/tests/test_tui_overlays.py @@ -0,0 +1,127 @@ +"""Integration tests for modal overlays: /model picker and /threads switcher.""" + +import asyncio + +import pytest + +from deerflow.client import StreamEvent +from deerflow.tui.app import DeerFlowTUI, SelectScreen +from deerflow.tui.cli import LaunchPlan + + +class _FakeClient: + def list_models(self): + return {"models": [{"name": "fast", "display_name": "Fast"}, {"name": "smart", "display_name": "Smart"}]} + + def list_skills(self, enabled_only=False): + return {"skills": []} + + def list_threads(self, limit=10): + return { + "thread_list": [ + {"thread_id": "thread-aaaaaaaa", "title": "Refactor bridge"}, + {"thread_id": "thread-bbbbbbbb", "title": "Write docs"}, + ] + } + + def stream(self, *args, **kwargs): + yield StreamEvent(type="end", data={}) + + +class _FakeSession: + def __init__(self): + self.client = _FakeClient() + + def resolve_thread(self, plan): + return None + + def recent_threads(self, limit=20): + return self.client.list_threads(limit=limit)["thread_list"] + + def resolve_ref(self, ref): + threads = self.client.list_threads(limit=100)["thread_list"] + if any(t["thread_id"] == ref for t in threads): + return ref + for t in threads: + if (t.get("title") or "") == ref: + return t["thread_id"] + return ref + + +async def _settle(pilot, predicate, timeout=2.0): + elapsed = 0.0 + while elapsed < timeout: + await pilot.pause() + if predicate(): + return True + await asyncio.sleep(0.02) + elapsed += 0.02 + return predicate() + + +@pytest.mark.asyncio +async def test_resume_command_with_title_switches_thread(): + app = DeerFlowTUI(_FakeSession(), LaunchPlan(mode="tui")) + async with app.run_test() as pilot: + await pilot.pause() + # Resolve a thread by its title (not id) — the by-title resume path. + app.query_one("#composer").value = "/resume Refactor bridge" + await pilot.press("enter") + await _settle(pilot, lambda: app._conv_thread_id == "thread-aaaaaaaa") + assert app._conv_thread_id == "thread-aaaaaaaa" + assert any(r.kind == "system" and "Resumed" in r.text for r in app.state.rows) + + +def test_resume_without_arg_routes_to_thread_switcher(): + # /resume with no id/title falls back to the thread switcher. + app = DeerFlowTUI(_FakeSession(), LaunchPlan(mode="tui")) + calls = [] + app._open_thread_switcher = lambda: calls.append("switcher") + app._handle_builtin("resume", "") + assert calls == ["switcher"] + + +@pytest.mark.asyncio +async def test_model_command_opens_picker_and_sets_override(): + app = DeerFlowTUI(_FakeSession(), LaunchPlan(mode="tui")) + async with app.run_test() as pilot: + await pilot.pause() + for ch in ("slash", "m", "o", "d", "e", "l"): + await pilot.press(ch) + await _settle(pilot, lambda: app._palette_open and any(c.name == "model" for c in app._palette_items)) + await pilot.press("enter") # run /model -> opens picker + await _settle(pilot, lambda: isinstance(app.screen, SelectScreen)) + await pilot.press("enter") # choose first model (Fast) + await _settle(pilot, lambda: app._model_override is not None) + assert app._model_override == "fast" + assert any(r.kind == "system" and "Fast" in r.text or "fast" in r.text for r in app.state.rows) + + +@pytest.mark.asyncio +async def test_threads_command_opens_switcher_and_resumes(): + app = DeerFlowTUI(_FakeSession(), LaunchPlan(mode="tui")) + async with app.run_test() as pilot: + await pilot.pause() + for ch in ("slash", "t", "h", "r", "e", "a", "d", "s"): + await pilot.press(ch) + await _settle(pilot, lambda: app._palette_open and any(c.name == "threads" for c in app._palette_items)) + await pilot.press("enter") # run /threads -> opens switcher + await _settle(pilot, lambda: isinstance(app.screen, SelectScreen)) + await pilot.press("enter") # choose first thread + await _settle(pilot, lambda: app._conv_thread_id == "thread-aaaaaaaa") + assert app._conv_thread_id == "thread-aaaaaaaa" + + +@pytest.mark.asyncio +async def test_picker_escape_cancels_without_change(): + app = DeerFlowTUI(_FakeSession(), LaunchPlan(mode="tui")) + async with app.run_test() as pilot: + await pilot.pause() + for ch in ("slash", "m", "o", "d", "e", "l"): + await pilot.press(ch) + await _settle(pilot, lambda: app._palette_open) + await pilot.press("enter") + await _settle(pilot, lambda: isinstance(app.screen, SelectScreen)) + await pilot.press("escape") + await _settle(pilot, lambda: not isinstance(app.screen, SelectScreen)) + assert app._model_override is None diff --git a/backend/tests/test_tui_palette.py b/backend/tests/test_tui_palette.py new file mode 100644 index 000000000..7c99d30c2 --- /dev/null +++ b/backend/tests/test_tui_palette.py @@ -0,0 +1,116 @@ +"""Integration tests for the slash-command palette via the pilot harness.""" + +import asyncio + +import pytest + +from deerflow.client import StreamEvent +from deerflow.tui.app import DeerFlowTUI +from deerflow.tui.cli import LaunchPlan + + +class _FakeClient: + def list_models(self): + return {"models": [{"name": "m"}]} + + def list_skills(self, enabled_only=False): + return {"skills": [{"name": "tdd", "description": "Test first", "enabled": True}]} + + def stream(self, *args, **kwargs): + yield StreamEvent(type="end", data={}) + + +class _FakeSession: + def __init__(self): + self.client = _FakeClient() + + def resolve_thread(self, plan): + return None + + +async def _settle(pilot, predicate, timeout=2.0): + elapsed = 0.0 + while elapsed < timeout: + await pilot.pause() + if predicate(): + return True + await asyncio.sleep(0.02) + elapsed += 0.02 + return predicate() + + +@pytest.mark.asyncio +async def test_typing_slash_opens_palette_with_matches(): + app = DeerFlowTUI(_FakeSession(), LaunchPlan(mode="tui")) + async with app.run_test() as pilot: + await pilot.pause() + await pilot.press("slash", "h", "e") + await _settle(pilot, lambda: app._palette_open) + assert app._palette_open + assert "help" in [c.name for c in app._palette_items] + + +@pytest.mark.asyncio +async def test_palette_index_resets_when_filter_changes(): + app = DeerFlowTUI(_FakeSession(), LaunchPlan(mode="tui")) + async with app.run_test() as pilot: + await pilot.pause() + await pilot.press("slash", "m") # memory / mcp / model … + await _settle(pilot, lambda: app._palette_open and len(app._palette_items) > 1) + await pilot.press("down", "down") + await pilot.pause() + assert app._palette_index > 0 + await pilot.press("e") # filter narrows ("/me") -> highlight must reset + await pilot.pause() + assert app._palette_index == 0 + + +@pytest.mark.asyncio +async def test_palette_enter_runs_builtin_and_closes(): + app = DeerFlowTUI(_FakeSession(), LaunchPlan(mode="tui")) + async with app.run_test() as pilot: + await pilot.pause() + for ch in ("slash", "h", "e", "l", "p"): + await pilot.press(ch) + await _settle(pilot, lambda: app._palette_open and bool(app._palette_items)) + await pilot.press("enter") + await _settle(pilot, lambda: any(r.kind == "system" for r in app.state.rows)) + assert any(r.kind == "system" for r in app.state.rows) + assert not app._palette_open + # /help is a builtin and must not have triggered an agent user turn. + assert not any(r.kind == "user" for r in app.state.rows) + + +@pytest.mark.asyncio +async def test_escape_closes_palette(): + app = DeerFlowTUI(_FakeSession(), LaunchPlan(mode="tui")) + async with app.run_test() as pilot: + await pilot.pause() + await pilot.press("slash", "m") + await _settle(pilot, lambda: app._palette_open) + await pilot.press("escape") + await _settle(pilot, lambda: not app._palette_open) + assert not app._palette_open + + +@pytest.mark.asyncio +async def test_skill_command_tab_completes_with_trailing_space(): + app = DeerFlowTUI(_FakeSession(), LaunchPlan(mode="tui")) + async with app.run_test() as pilot: + await pilot.pause() + await pilot.press("slash", "t", "d", "d") + await _settle(pilot, lambda: app._palette_open and any(c.name == "tdd" for c in app._palette_items)) + await pilot.press("tab") + await _settle(pilot, lambda: not app._palette_open) + value = app.query_one("#composer").value + assert value == "/tdd " + + +@pytest.mark.asyncio +async def test_normal_text_does_not_open_palette(): + app = DeerFlowTUI(_FakeSession(), LaunchPlan(mode="tui")) + async with app.run_test() as pilot: + await pilot.pause() + await pilot.press("h", "i") + await pilot.pause() + assert not app._palette_open diff --git a/backend/tests/test_tui_palette_render.py b/backend/tests/test_tui_palette_render.py new file mode 100644 index 000000000..e6f9bc184 --- /dev/null +++ b/backend/tests/test_tui_palette_render.py @@ -0,0 +1,44 @@ +"""Tests for the slash-command palette renderer (pure).""" + +from rich.console import Console + +from deerflow.tui.command_registry import build_registry +from deerflow.tui.render import render_palette + + +def _text(renderable) -> str: + console = Console(width=80, no_color=True) + with console.capture() as cap: + console.print(renderable) + return cap.get() + + +def test_empty_items_render_nothing(): + assert _text(render_palette([], 0)).strip() == "" + + +def test_lists_commands_with_descriptions(): + registry = build_registry([]) + out = _text(render_palette(registry, 0, limit=5)) + assert "/help" in out + assert "Show commands" in out + + +def test_highlight_marker_present_on_selected_row(): + registry = build_registry([]) + out = _text(render_palette(registry, 0, limit=5)) + assert "▌" in out + + +def test_windowing_shows_more_indicator_when_truncated(): + registry = build_registry([]) + out = _text(render_palette(registry, 0, limit=3)) + assert "more" in out + + +def test_window_follows_selection_index(): + registry = build_registry([]) + # Selecting an index beyond the first window must keep that command visible. + target = registry[6] + out = _text(render_palette(registry, 6, limit=4)) + assert f"/{target.name}" in out diff --git a/backend/tests/test_tui_persistence.py b/backend/tests/test_tui_persistence.py new file mode 100644 index 000000000..0d4d1fd4a --- /dev/null +++ b/backend/tests/test_tui_persistence.py @@ -0,0 +1,63 @@ +"""Tests for the shared-persistence writer (thread_meta visibility). + +Uses the in-memory ThreadMetaStore so no SQL engine is required, but exercises +the real async store + background-loop wiring used by the TUI. +""" + +import pytest +from langgraph.store.memory import InMemoryStore + +from deerflow.persistence.thread_meta import make_thread_store +from deerflow.tui.persistence import ThreadMetaWriter, _LoopThread + + +@pytest.fixture +def writer_store_loop(): + loop = _LoopThread() + store = make_thread_store(None, store=InMemoryStore()) + writer = ThreadMetaWriter(loop, store) + try: + yield writer, store, loop + finally: + loop.close() + + +def test_writer_is_enabled_with_a_store(writer_store_loop): + writer, _store, _loop = writer_store_loop + assert writer.enabled is True + assert writer.user_id == "default" + + +def test_ensure_created_writes_row_owned_by_default_user(writer_store_loop): + writer, store, loop = writer_store_loop + writer.ensure_created("th-1", assistant_id="lead-agent", metadata={"source": "tui"}) + rows = loop.run(store.search(user_id="default")) + assert "th-1" in [r["thread_id"] for r in rows] + + +def test_ensure_created_is_idempotent(writer_store_loop): + writer, store, loop = writer_store_loop + writer.ensure_created("th-1") + writer.ensure_created("th-1") + rows = loop.run(store.search(user_id="default")) + assert sum(1 for r in rows if r["thread_id"] == "th-1") == 1 + + +def test_set_title_updates_display_name(writer_store_loop): + writer, store, loop = writer_store_loop + writer.ensure_created("th-1") + writer.set_title("th-1", "Refactor the bridge") + row = loop.run(store.get("th-1", user_id="default")) + assert row["display_name"] == "Refactor the bridge" + + +def test_disabled_writer_is_a_silent_noop(): + loop = _LoopThread() + try: + writer = ThreadMetaWriter(loop, None) + assert writer.enabled is False + # Must not raise even though there is no store. + writer.ensure_created("x", assistant_id="lead-agent") + writer.set_title("x", "title") + finally: + loop.close() diff --git a/backend/tests/test_tui_render.py b/backend/tests/test_tui_render.py new file mode 100644 index 000000000..f17b8be90 --- /dev/null +++ b/backend/tests/test_tui_render.py @@ -0,0 +1,118 @@ +"""Smoke tests for the pure Rich renderers — they must render without error +and include the expected text.""" + +from rich.console import Console + +from deerflow.tui.render import render_header, render_status, render_transcript +from deerflow.tui.view_state import ( + AssistantDelta, + RunEnded, + RunStarted, + SystemMessage, + ToolResult, + ToolStarted, + UserSubmitted, + initial_state, + reduce, +) + + +def _render_to_text(renderable) -> str: + console = Console(width=100, no_color=True) + with console.capture() as capture: + console.print(renderable) + return capture.get() + + +def test_render_empty_transcript_shows_hint(): + out = _render_to_text(render_transcript(initial_state())) + assert "Type a message" in out + + +def test_render_transcript_includes_all_row_kinds(): + state = initial_state() + state = reduce(state, UserSubmitted("hello there")) + state = reduce(state, AssistantDelta(id="m1", text="hi back")) + state = reduce(state, ToolStarted(tool_call_id="t1", tool_name="read_file", args={"path": "a.py"})) + state = reduce(state, ToolResult(tool_call_id="t1", content="file body", is_error=False)) + state = reduce(state, SystemMessage("a note")) + + out = _render_to_text(render_transcript(state)) + assert "hello there" in out + assert "hi back" in out + assert "Read" in out and "a.py" in out + assert "file body" in out + assert "a note" in out + + +def test_finalized_assistant_renders_markdown(): + state = initial_state() + state = reduce(state, AssistantDelta(id="m1", text="**bold** text\n\n## A Heading\n\n- item one")) + out = _render_to_text(render_transcript(state)) + # Markdown is rendered: the syntax markers are consumed, the content remains. + assert "bold" in out + assert "**bold**" not in out + assert "A Heading" in out + assert "## A Heading" not in out + assert "item one" in out + + +def test_actively_streaming_assistant_stays_plain(): + state = initial_state() + state = reduce(state, RunStarted()) + state = reduce(state, AssistantDelta(id="m1", text="**partial heading ##")) + out = _render_to_text(render_transcript(state)) + # The streaming row must NOT be markdown-rendered (avoids reflow jumpiness). + assert "**partial heading ##" in out + + +def test_prior_message_stays_markdown_when_a_followup_run_starts(): + # Regression: sending a follow-up must NOT revert a finalized markdown answer + # to raw text. Between RunStarted and the new answer's first delta (and during + # the client's re-emit of prior messages), the previous answer is the last + # assistant row — it must still render as Markdown. + state = initial_state() + state = reduce(state, AssistantDelta(id="m1", text="**bold answer**")) + state = reduce(state, RunEnded()) + state = reduce(state, UserSubmitted("follow up")) + state = reduce(state, RunStarted()) + state = reduce(state, AssistantDelta(id="m1", text="**bold answer**")) # re-emit, no new answer yet + + out = _render_to_text(render_transcript(state)) + assert "**bold answer**" not in out # still Markdown-rendered + assert "bold answer" in out + + +def test_only_the_actively_streaming_message_is_plain(): + state = initial_state() + state = reduce(state, AssistantDelta(id="m1", text="**done**")) + state = reduce(state, RunEnded()) + state = reduce(state, RunStarted()) + state = reduce(state, AssistantDelta(id="m2", text="**streaming now")) + + out = _render_to_text(render_transcript(state)) + assert "**streaming now" in out # active m2 stays plain + assert "**done**" not in out # finalized m1 stays Markdown + assert "done" in out + + +def test_render_status_ready_and_working(): + ready = _render_to_text(render_status(initial_state(), model="gpt", thread_label="new")) + assert "ready" in ready + + state = reduce(initial_state(), RunStarted()) + working = _render_to_text(render_status(state, model="gpt", thread_label="new", spinner="*")) + assert "working" in working + + +def test_render_status_shows_token_usage(): + state = reduce(initial_state(), RunEnded(usage={"total_tokens": 42})) + out = _render_to_text(render_status(state, model="gpt", thread_label="t1")) + assert "42 tok" in out + + +def test_render_header_includes_model_and_cwd(): + out = _render_to_text(render_header(model="claude", thread_label="new", cwd="/tmp/proj", skills=3)) + assert "DeerFlow" in out + assert "claude" in out + assert "/tmp/proj" in out diff --git a/backend/tests/test_tui_runtime.py b/backend/tests/test_tui_runtime.py new file mode 100644 index 000000000..9b69fcf75 --- /dev/null +++ b/backend/tests/test_tui_runtime.py @@ -0,0 +1,145 @@ +"""Tests for the runtime bridge: StreamEvent -> reducer actions. + +The translation layer is pure and is exercised here against real +``StreamEvent`` objects plus a fake client, with no Textual involved. +""" + +from deerflow.client import StreamEvent +from deerflow.tui.runtime import stream_actions, translate +from deerflow.tui.view_state import ( + AssistantDelta, + AssistantError, + RunEnded, + RunStarted, + ThreadTitle, + ToolResult, + ToolStarted, + initial_state, + reduce, +) + + +def test_translate_ai_text_delta(): + event = StreamEvent(type="messages-tuple", data={"type": "ai", "content": "Hello", "id": "m1"}) + actions = translate(event) + assert actions == [AssistantDelta(id="m1", text="Hello")] + + +def test_translate_ai_tool_call_emits_tool_started_not_empty_delta(): + event = StreamEvent( + type="messages-tuple", + data={ + "type": "ai", + "content": "", + "id": "m1", + "tool_calls": [{"name": "read_file", "args": {"path": "a.py"}, "id": "t1"}], + }, + ) + actions = translate(event) + assert actions == [ToolStarted(tool_call_id="t1", tool_name="read_file", args={"path": "a.py"})] + + +def test_translate_ai_content_blocks_list_extracts_text(): + event = StreamEvent( + type="messages-tuple", + data={"type": "ai", "content": [{"type": "text", "text": "abc"}, {"type": "text", "text": "def"}], "id": "m9"}, + ) + actions = translate(event) + assert actions == [AssistantDelta(id="m9", text="abcdef")] + + +def test_translate_tool_call_with_none_id_yields_empty_id(): + # Some providers' first tool-call chunk has id=None; it must coerce to "" (not + # "None"), so the empty-id guard in the reducer drops the noise chunk. + event = StreamEvent( + type="messages-tuple", + data={"type": "ai", "content": "", "id": "m1", "tool_calls": [{"id": None, "name": None, "args": {}}]}, + ) + assert translate(event) == [ToolStarted(tool_call_id="", tool_name="", args={})] + + +def test_translate_tool_result_with_none_id_yields_empty_id(): + event = StreamEvent(type="messages-tuple", data={"type": "tool", "content": "x", "name": None, "tool_call_id": None}) + assert translate(event) == [ToolResult(tool_call_id="", content="x", is_error=False, tool_name="")] + + +def test_translate_tool_result_with_error_status(): + event = StreamEvent( + type="messages-tuple", + data={"type": "tool", "content": "boom", "name": "bash", "tool_call_id": "t1", "status": "error"}, + ) + actions = translate(event) + assert actions == [ToolResult(tool_call_id="t1", content="boom", is_error=True, tool_name="bash")] + + +def test_translate_end_event_carries_usage(): + usage = {"input_tokens": 3, "output_tokens": 7, "total_tokens": 10} + actions = translate(StreamEvent(type="end", data={"usage": usage})) + assert actions == [RunEnded(usage=usage)] + + +def test_translate_values_surfaces_title_only(): + assert translate(StreamEvent(type="values", data={"title": "My Thread", "messages": []})) == [ThreadTitle(title="My Thread")] + assert translate(StreamEvent(type="values", data={"title": None, "messages": []})) == [] + assert translate(StreamEvent(type="custom", data={"anything": 1})) == [] + + +class _FakeClient: + def __init__(self, events): + self._events = events + self.calls = [] + + def stream(self, message, *, thread_id=None, **kwargs): + self.calls.append((message, thread_id)) + yield from self._events + + +def test_stream_actions_brackets_with_run_started_and_ended(): + client = _FakeClient( + [ + StreamEvent(type="messages-tuple", data={"type": "ai", "content": "Hi", "id": "m1"}), + StreamEvent(type="end", data={"usage": {"total_tokens": 5}}), + ] + ) + actions = list(stream_actions(client, "hello", thread_id="th-1")) + assert isinstance(actions[0], RunStarted) + assert isinstance(actions[-1], RunEnded) + assert client.calls == [("hello", "th-1")] + + +def test_stream_actions_reduces_to_expected_transcript(): + client = _FakeClient( + [ + StreamEvent(type="messages-tuple", data={"type": "ai", "content": "Let me look. ", "id": "m1"}), + StreamEvent( + type="messages-tuple", + data={"type": "ai", "content": "", "id": "m1", "tool_calls": [{"name": "read_file", "args": {"path": "a.py"}, "id": "t1"}]}, + ), + StreamEvent(type="messages-tuple", data={"type": "tool", "content": "file body", "name": "read_file", "tool_call_id": "t1"}), + StreamEvent(type="messages-tuple", data={"type": "ai", "content": "Done.", "id": "m2"}), + StreamEvent(type="end", data={"usage": {"total_tokens": 9}}), + ] + ) + state = initial_state() + for action in stream_actions(client, "go"): + state = reduce(state, action) + + kinds = [r.kind for r in state.rows] + assert kinds == ["assistant", "tool", "assistant"] + assert state.rows[0].text == "Let me look. " + assert state.rows[1].status == "ok" + assert state.rows[2].text == "Done." + assert state.streaming is False + assert state.usage == {"total_tokens": 9} + + +class _BoomClient: + def stream(self, message, *, thread_id=None, **kwargs): + yield StreamEvent(type="messages-tuple", data={"type": "ai", "content": "partial", "id": "m1"}) + raise RuntimeError("model down") + + +def test_stream_actions_surfaces_exception_as_error_then_ends(): + actions = list(stream_actions(_BoomClient(), "go")) + assert any(isinstance(a, AssistantError) and "model down" in a.text for a in actions) + assert isinstance(actions[-1], RunEnded) diff --git a/backend/tests/test_tui_session.py b/backend/tests/test_tui_session.py new file mode 100644 index 000000000..0811d0a2c --- /dev/null +++ b/backend/tests/test_tui_session.py @@ -0,0 +1,59 @@ +"""Tests for Session thread resolution (id-or-title) and lifecycle.""" + +from deerflow.tui.cli import LaunchPlan +from deerflow.tui.session import Session + + +class _Client: + def __init__(self, threads): + self._threads = threads + + def list_threads(self, limit=10): + return {"thread_list": self._threads} + + +def _session(threads): + return Session(client=_Client(threads)) + + +THREADS = [ + {"thread_id": "thread-aaaa", "title": "Bug triage"}, + {"thread_id": "thread-bbbb", "title": "Write docs"}, +] + + +def test_resolve_ref_matches_id(): + assert _session(THREADS).resolve_ref("thread-bbbb") == "thread-bbbb" + + +def test_resolve_ref_matches_title(): + assert _session(THREADS).resolve_ref("Bug triage") == "thread-aaaa" + + +def test_resolve_ref_unknown_falls_back_to_literal_id(): + assert _session(THREADS).resolve_ref("brand-new-id") == "brand-new-id" + + +def test_resolve_thread_resolves_title_from_plan(): + plan = LaunchPlan(mode="tui", thread_id="Write docs") + assert _session(THREADS).resolve_thread(plan) == "thread-bbbb" + + +def test_resolve_thread_continue_returns_most_recent(): + plan = LaunchPlan(mode="tui", continue_recent=True) + assert _session(THREADS).resolve_thread(plan) == "thread-aaaa" + + +def test_close_is_a_noop_without_a_loop(): + # Headless sessions have no persistence loop; close() must be safe. + _session(THREADS).close() + + +def test_close_stops_the_background_loop(): + from deerflow.tui.persistence import ThreadMetaWriter, _LoopThread + + loop = _LoopThread() + session = Session(client=_Client(THREADS), writer=ThreadMetaWriter(loop, None), _loop=loop) + session.close() + assert session._loop is None + session.close() # idempotent diff --git a/backend/tests/test_tui_view_state.py b/backend/tests/test_tui_view_state.py new file mode 100644 index 000000000..e06250f78 --- /dev/null +++ b/backend/tests/test_tui_view_state.py @@ -0,0 +1,199 @@ +"""Tests for the pure TUI view-state reducer. + +The reducer is the testable heart of the TUI: a pure function mapping +(state, action) -> state, with no Textual / rendering dependency. +""" + +from deerflow.tui.view_state import ( + AssistantDelta, + AssistantError, + ClearRows, + RunEnded, + RunStarted, + SystemMessage, + ToolResult, + ToolStarted, + UserSubmitted, + initial_state, + reduce, +) + + +def test_user_submitted_appends_user_row(): + state = reduce(initial_state(), UserSubmitted("hello world")) + assert len(state.rows) == 1 + row = state.rows[0] + assert row.kind == "user" + assert row.text == "hello world" + + +def test_run_started_and_ended_toggle_streaming_and_store_usage(): + state = reduce(initial_state(), RunStarted()) + assert state.streaming is True + + usage = {"input_tokens": 10, "output_tokens": 5, "total_tokens": 15} + state = reduce(state, RunEnded(usage=usage)) + assert state.streaming is False + assert state.usage == usage + + +def test_assistant_delta_creates_then_extends_same_id_row(): + state = initial_state() + state = reduce(state, AssistantDelta(id="m1", text="Hel")) + state = reduce(state, AssistantDelta(id="m1", text="lo")) + assert len(state.rows) == 1 + assert state.rows[0].kind == "assistant" + assert state.rows[0].text == "Hello" + assert state.rows[0].id == "m1" + + +def test_assistant_delta_with_new_id_after_tool_creates_separate_row(): + state = initial_state() + state = reduce(state, AssistantDelta(id="m1", text="thinking")) + state = reduce(state, ToolStarted(tool_call_id="t1", tool_name="read_file", args={"path": "a.py"})) + state = reduce(state, ToolResult(tool_call_id="t1", content="ok", is_error=False)) + state = reduce(state, AssistantDelta(id="m2", text="done")) + + kinds = [r.kind for r in state.rows] + assert kinds == ["assistant", "tool", "assistant"] + assert state.rows[0].text == "thinking" + assert state.rows[2].text == "done" + + +def test_tool_started_appends_running_row_and_result_marks_ok(): + state = initial_state() + state = reduce(state, ToolStarted(tool_call_id="t1", tool_name="read_file", args={"path": "x.py"})) + assert state.rows[0].kind == "tool" + assert state.rows[0].status == "running" + assert state.rows[0].tool_name == "read_file" + + state = reduce(state, ToolResult(tool_call_id="t1", content="file body", is_error=False)) + assert state.rows[0].status == "ok" + assert "file body" in state.rows[0].result + + +def test_tool_result_with_error_marks_error_status(): + state = initial_state() + state = reduce(state, ToolStarted(tool_call_id="t1", tool_name="bash", args={})) + state = reduce(state, ToolResult(tool_call_id="t1", content="boom", is_error=True)) + assert state.rows[0].status == "error" + + +def test_tool_result_without_prior_started_creates_a_completed_row(): + # Defensive: if the tool_started chunks were skipped/missed, a tool result + # should still surface as a completed card rather than vanish. + state = initial_state() + state = reduce(state, ToolResult(tool_call_id="ghost", content="x", is_error=False, tool_name="bash")) + tools = [r for r in state.rows if r.kind == "tool"] + assert len(tools) == 1 + assert tools[0].status == "ok" + + +def test_tool_result_without_call_id_is_ignored(): + state = reduce(initial_state(), ToolResult(tool_call_id="", content="x", is_error=False)) + assert state.rows == () + + +# --- streaming robustness: the client can re-emit the same id (values +# re-synthesis) and stream partial tool-call chunks. The reducer must not +# duplicate text or tool cards. --- + + +def test_assistant_delta_skips_full_resend_of_same_id(): + state = initial_state() + state = reduce(state, AssistantDelta(id="m1", text="Hey there!\nWhat's up?")) + state = reduce(state, AssistantDelta(id="m1", text="Hey there!\nWhat's up?")) + assert [r.kind for r in state.rows] == ["assistant"] + assert state.rows[0].text == "Hey there!\nWhat's up?" + + +def test_assistant_delta_treats_cumulative_snapshot_as_replace(): + state = initial_state() + state = reduce(state, AssistantDelta(id="m1", text="Hel")) + state = reduce(state, AssistantDelta(id="m1", text="Hel lo world")) + assert state.rows[0].text == "Hel lo world" + + +def test_streaming_id_tracks_active_message_not_reemitted_history(): + state = initial_state() + state = reduce(state, AssistantDelta(id="m1", text="answer one")) + state = reduce(state, RunEnded()) + assert state.streaming_id is None + + state = reduce(state, RunStarted()) + assert state.streaming_id is None # new turn: nothing actively streaming yet + state = reduce(state, AssistantDelta(id="m1", text="answer one")) # re-emit (no-op) + assert state.streaming_id is None # re-emit of history must not mark active + state = reduce(state, AssistantDelta(id="m2", text="new content")) # real new content + assert state.streaming_id == "m2" + + state = reduce(state, RunEnded()) + assert state.streaming_id is None + + +def test_assistant_resend_of_older_message_updates_in_place_not_duplicated(): + # On a thread with history, the client re-emits every prior message on each + # new turn. A values snapshot can re-emit an OLDER message's full text AFTER + # a newer message has already started — the reducer must update the old row + # by id, not append a verbatim duplicate at the end. + state = initial_state() + state = reduce(state, AssistantDelta(id="m1", text="First answer.")) + state = reduce(state, UserSubmitted("second question")) + state = reduce(state, AssistantDelta(id="m2", text="Second answer.")) + state = reduce(state, AssistantDelta(id="m1", text="First answer.")) # re-emit of old m1 + + assistants = [r for r in state.rows if r.kind == "assistant"] + assert [a.text for a in assistants] == ["First answer.", "Second answer."] + + +def test_tool_started_dedupes_by_call_id(): + state = initial_state() + state = reduce(state, ToolStarted(tool_call_id="tc1", tool_name="bash", args={"cmd": "l"})) + state = reduce(state, ToolStarted(tool_call_id="tc1", tool_name="bash", args={"cmd": "ls -la"})) + tools = [r for r in state.rows if r.kind == "tool"] + assert len(tools) == 1 + assert "ls -la" in tools[0].detail + + +def test_tool_started_with_empty_call_id_is_ignored(): + state = initial_state() + state = reduce(state, ToolStarted(tool_call_id="", tool_name="", args={})) + assert state.rows == () + + +def test_tool_started_fills_name_on_a_later_chunk(): + state = initial_state() + state = reduce(state, ToolStarted(tool_call_id="tc1", tool_name="", args={})) + state = reduce(state, ToolStarted(tool_call_id="tc1", tool_name="web_search", args={"query": "x"})) + tools = [r for r in state.rows if r.kind == "tool"] + assert len(tools) == 1 + assert tools[0].tool_name == "web_search" + assert tools[0].title == "Search" + + +def test_assistant_error_appends_error_row(): + state = reduce(initial_state(), AssistantError("model exploded")) + assert state.rows[0].kind == "assistant" + assert state.rows[0].error is True + assert state.rows[0].text == "model exploded" + + +def test_system_message_appends_with_tone(): + state = reduce(initial_state(), 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Engineering Spec + +**Date**: 2026-06-13 +**Status**: Draft, ready for RFC discussion +**Scope**: Hermes-like terminal UI for the DeerFlow 2.0 harness + +**Revision 2026-06-24**: Reworked runtime ownership and session persistence after RFC #3540 feedback. The TUI runs embedded but reuses the same session/persistence layer (`ThreadMetaStore`) so terminal sessions are visible in the Web UI without running the Gateway. See [Runtime and Session Persistence](#runtime-and-session-persistence). + +--- + +## Problem Statement + +DeerFlow has a capable embedded Python client and a full Gateway/Web UI, but no first-class terminal workbench. A plain command set would help scripts, but it would not cover the interactive developer experience we actually want: a persistent, keyboard-driven TUI where users can chat, switch threads, inspect tools, manage files, view live execution, trigger slash commands, and keep context without opening the browser. + +Hermes Agent's TUI is a useful reference point: the terminal UI is a modern interactive surface backed by the same runtime as the classic CLI, shares sessions and slash commands, supports modal overlays, non-blocking input, live session switching, status indicators, and a TTY-aware fallback path. + +DeerFlow needs the same product shape: + +1. A terminal-native primary interface for users who live in the shell. +2. The same agent behavior, memory, skills, MCP tools, sandbox behavior, and thread persistence as the web app and embedded client, converging on one shared session/persistence layer rather than a per-surface copy. +3. A richer interactive surface than one-shot commands can provide. +4. Scriptable headless commands for automation, but not as the center of the product. + +## Solution + +Build a first-party `deerflow` TUI backed by `DeerFlowClient`. + +The default interactive path should be: + +```bash +deerflow +deerflow --tui +deerflow chat +deerflow --continue +deerflow --resume THREAD_ID +``` + +The headless path should remain available for scripts: + +```bash +deerflow chat --print "summarize this repo" +deerflow models list --json +deerflow threads list --json +``` + +The v1 TUI should run in embedded mode only. It should not require Gateway, frontend, nginx, or Docker services to be running, though it must honor the same `config.yaml`, `extensions_config.json`, runtime paths, sandbox configuration, tracing configuration, skills, memory, and checkpointer settings used by the rest of DeerFlow. + +Remote HTTP/Gateway mode can be added later as a transport option. The first implementation should ship a dependable local terminal workbench. + +## Runtime and Session Persistence + +This is the most load-bearing decision in the spec, and the RFC discussion (#3540) surfaced two facts about the current codebase that the original draft glossed over: + +1. **There is no single runtime today — there are two run paths that share only the agent factory.** The Web/Gateway surface executes runs through `run_agent()` (async `astream` + `StreamBridge` for SSE). `DeerFlowClient.stream()` executes runs synchronously and in-process. Both build the agent through the same `make_lead_agent` / `create_agent()` factory, but the run, streaming, and persistence orchestration around that factory is implemented twice and is not shared. +2. **Web UI session visibility is driven by `ThreadMetaStore`, not the checkpointer.** The Web UI lists conversations via `GET /api/threads/search`, which reads the `thread_meta` SQL table filtered by `user_id`. The Gateway creates a `thread_meta` row (with the authenticated `user_id`) on the first run of a thread. `DeerFlowClient` writes only to the checkpointer and never creates a `thread_meta` row, so a thread created from the TUI is invisible in the Web UI sidebar by default — even though both surfaces can load the same checkpoint if they already know the `thread_id`. + +### v1 decision + +The TUI stays **embedded** (no Gateway, frontend, nginx, or Docker dependency) but **reuses the same persistence layer** instead of a private copy: + +1. The embedded run path writes `thread_meta` to the same store the Web UI reads, so terminal sessions appear in the Web UI sidebar **without the Gateway process running**. Web UI visibility requires the shared `thread_meta` store and a `user_id` — it does **not** require the Gateway HTTP API. +2. Because the embedded process has no authenticated user, v1 attributes embedded `thread_meta` rows to a single **local default user identity** resolved from config. Full multi-user auth/session switching stays out of scope. +3. `thread_meta` creation, token-usage tracking, and thread-title sync are factored into one shared module used by **both** `run_agent()` and `DeerFlowClient`, so the two run paths cannot drift on session bookkeeping. This converges "single runtime" from the agent-factory layer down to the session/persistence layer, which is where multi-surface consistency actually lives. +4. Reusing the Gateway HTTP API as the TUI transport was considered and deferred: it would give Web UI visibility and user scoping "for free" but requires a running service stack and an auth token, which defeats the standalone local-workbench goal. It remains a later transport option, not the v1 path. + +## Reference Behavior From Hermes + +The DeerFlow TUI should borrow product ideas, not implementation details, from Hermes: + +1. Bare command launches an interactive terminal interface. +2. TUI is backed by the same runtime as non-interactive commands. +3. Sessions/threads are shared between TUI and headless invocations. +4. Slash commands work the same way across surfaces. +5. Input remains usable while the runtime initializes or while a run is active. +6. Model picker, thread picker, clarification prompts, and approvals render as overlays. +7. Tool and skill initialization appears progressively instead of blocking startup. +8. Alternate-screen rendering avoids scrollback clutter and flicker. +9. TTY detection falls back to single-query/headless behavior when interactive rendering is unavailable. +10. Interrupts can stop or redirect the active run without corrupting persisted thread state. + +## User Stories + +1. As a DeerFlow user, I want `deerflow` to open an interactive terminal UI, so that I can work without a browser. +2. As a DeerFlow user, I want to continue the most recent thread, so that I can resume work quickly. +3. As a DeerFlow user, I want to resume a specific thread by id or title, so that I can return to older work. +4. As a DeerFlow user, I want a fixed composer with multiline editing, so that long prompts are comfortable to write. +5. As a DeerFlow user, I want slash-command autocomplete, so that skills and commands are discoverable. +6. As a DeerFlow user, I want `/model` to open a model picker, so that model switching is not a fragile text-only workflow. +7. As a DeerFlow user, I want `/threads` or `/switch` to open a live thread switcher, so that I can move between active conversations. +8. As a DeerFlow user, I want `/skills` to browse enabled and available skills, so that I can understand what the agent can do. +9. As a DeerFlow user, I want tool calls and results to stream into a collapsible activity panel, so that I can inspect execution without losing the main answer. +10. As a DeerFlow user, I want uploads and generated artifacts visible in a side panel, so that file-heavy workflows stay manageable. +11. As a DeerFlow user, I want memory status and relevant injected facts visible on demand, so that persistent context is not mysterious. +12. As a DeerFlow user, I want MCP servers and built-in tools visible on demand, so that tool availability is clear. +13. As a DeerFlow user, I want status-line indicators for model, thread, token usage, run state, and sandbox mode, so that I know what environment I am driving. +14. As a DeerFlow user, I want to interrupt a running agent with `Ctrl+C` or a new message, so that I can redirect work without restarting the TUI. +15. As a DeerFlow user, I want clarification prompts to appear as focused overlays, so that I can answer them quickly. +16. As a DeerFlow user, I want file path paste handling, so that pasted paths can become uploads or prompt text intentionally. +17. As a DeerFlow user, I want command history and prompt drafts to survive transient UI redraws, so that I do not lose work. +18. As an automation author, I want headless `--print` and `--json` modes, so that TUI work does not remove scriptability. +19. As a maintainer, I want TUI tests at the UI-driver boundary, so that layout refactors do not silently break command behavior. +20. As a package consumer, I want an installed `deerflow` binary to launch the TUI, so that the harness feels like a product, not only a library. + +## TUI Surface + +### Launch Modes + +| Command | Behavior | +|---|---| +| `deerflow` | Launch TUI when stdin/stdout are TTYs. | +| `deerflow --tui` | Force TUI and fail with a clear diagnostic if unavailable. | +| `deerflow --cli` | Force headless/classic command mode for one invocation. | +| `deerflow chat` | Launch the same TUI conversation surface. | +| `deerflow chat --print MESSAGE` | Single-query headless mode. | +| `deerflow --continue` | Resume most recent thread. | +| `deerflow --resume THREAD_ID_OR_TITLE` | Resume a specific thread. | +| `DEER_FLOW_TUI=1 deerflow` | Force TUI through environment. | + +If TUI dependencies or a TTY are missing, bare `deerflow` should print a diagnostic and fall back to headless guidance rather than hanging or crashing. + +### Layout + +The TUI should use a predictable terminal workbench layout: + +1. Header/banner: project root, active model, sandbox mode, memory state, enabled tool groups, enabled skills, MCP server summary. +2. Main transcript: user messages, streamed assistant deltas, final answers, and compact summaries of tool activity. +3. Activity panel: collapsible tool calls, tool results, subagent status, uploads, artifact writes, and custom stream events. +4. Side/session panel: current thread title/id, recent threads, live threads, uploaded files, generated artifacts. +5. Composer: multiline input, slash-command autocomplete, file attach affordances, paste handling. +6. Status line: run state, model, token usage, elapsed time, thread id/title, pending uploads, active tool/subagent count. + +### Slash Commands + +Slash commands should be TUI-owned affordances over existing DeerFlow capabilities: + +| Command | TUI behavior | +|---|---| +| `/help` | Overlay with categorized commands and keybindings. | +| `/new` | Start a fresh thread. | +| `/resume THREAD` | Resume a thread. | +| `/threads` or `/switch` | Open thread switcher. | +| `/model` | Open model picker. | +| `/skills` | Open skill browser. | +| `/<skill-name> ...` | Activate a skill for the current turn, preserving existing slash-skill semantics. | +| `/tools` | Show built-in, MCP, sandbox, and community tool availability. | +| `/mcp` | Show MCP server status. | +| `/memory` | Show memory status and injected facts. | +| `/uploads` | Show uploaded files for the current thread. | +| `/artifacts` | Show generated artifacts and save/open actions. | +| `/details` | Toggle verbose activity rendering. | +| `/usage` | Open token usage/context panel. | +| `/config` | Show resolved config paths and active overrides. | +| `/quit` | Exit the TUI. | + +### Keybindings + +Initial keybindings: + +| Key | Behavior | +|---|---| +| `Enter` | Send current prompt when composer is single-line or submit is explicit. | +| `Shift+Enter` / terminal-supported equivalent | Insert newline. | +| `Ctrl+C` | Interrupt active run; when idle, ask to quit or clear composer. | +| `Esc` | Close overlay or cancel current selection. | +| `Ctrl+L` | Redraw UI. | +| `Ctrl+R` | Open thread/session switcher. | +| `Ctrl+O` | Open file attach picker. | +| `Ctrl+D` | Toggle details/activity panel. | +| `Ctrl+U` | Clear composer. | +| `Ctrl+P` / `Ctrl+N` | Navigate history/autocomplete. | + +Keybindings should be documented in `/help` and must degrade gracefully across terminals. + +## Headless Command Surface + +The TUI is the primary product, but scriptable commands should remain: + +1. `deerflow chat --print MESSAGE` +2. `deerflow chat --stdin --print` +3. `deerflow chat --json MESSAGE` +4. `deerflow models list|get` +5. `deerflow skills list|get|enable|disable|install` +6. `deerflow mcp list|export|apply` +7. `deerflow memory status|show|export|import|clear|fact add|fact update|fact delete` +8. `deerflow uploads add|list|delete` +9. `deerflow artifacts get` +10. `deerflow threads list|get` + +Headless JSON streaming should preserve `StreamEvent` semantics as newline-delimited JSON. + +## Implementation Decisions + +1. The console script name is `deerflow`. +2. The TUI is the default interactive surface for TTY sessions. +3. The TUI is backed by the embedded `DeerFlowClient` run path, not a new third runtime. Today `DeerFlowClient` and the Gateway's `run_agent()` share only the agent factory; v1 converges them on a shared session/persistence layer (see [Runtime and Session Persistence](#runtime-and-session-persistence)) instead of adding another divergent copy. +4. Thread persistence, streaming semantics, uploads, artifacts, skills, MCP, memory, and cache invalidation remain owned by `DeerFlowClient` and existing harness modules. Session indexing (`thread_meta`) plus token-usage and title bookkeeping move into one shared module so the embedded TUI writes the same session records the Web UI reads, attributed to a single local default `user_id`. Web UI visibility therefore needs the shared store, not the Gateway process. +5. The first TUI should prefer a Python-native TUI stack unless a prototype proves a Node/React terminal stack is materially better for DeerFlow. Python-native keeps packaging and runtime closer to the harness. +6. If a Node TUI is chosen, it must be launched by the Python `deerflow` command and communicate through a narrow local protocol so `DeerFlowClient` remains the runtime owner. +7. The TUI should support alternate-screen rendering, but headless mode and non-TTY fallback must remain available. +8. The TUI should render tool activity as first-class UI state rather than mixing every event into the transcript. +9. The implementation should avoid adding a Gateway dependency to local TUI mode. +10. The implementation must update user-facing README usage and backend development guidance when code lands. + +## Testing Decisions + +Good TUI tests should validate behavior at the highest practical seam: + +1. Headless parser/dispatcher tests through `main(argv)`. +2. TUI app state tests using a mocked `DeerFlowClient` and synthetic `StreamEvent` objects. +3. Snapshot-like tests for layout state, not brittle terminal screenshots, for core panels and overlays. +4. Keybinding tests for send, interrupt, overlay close, thread switch, details toggle, and file attach. +5. Slash-command tests for command routing, autocomplete, and skill activation handoff. +6. JSON contract tests for headless mode. +7. Error tests for missing TTY, missing optional TUI dependency, invalid config, missing model, upload failures, and artifact path errors. +8. Packaging smoke test proving the console entry point launches the correct surface. + +Optional live tests: + +1. A skipped-by-default live TUI smoke test can run only when a valid local config and credentials are present. +2. Live tests should not be required in CI. + +## Risks + +1. Terminal compatibility: keybindings, paste handling, mouse support, and alternate screen differ across terminal emulators. +2. Streaming complexity: a pleasant UI needs careful state management for transcript, tool events, uploads, artifacts, and run lifecycle. +3. Config timing: global overrides must be applied before modules cache configuration. +4. Dependency footprint: a full TUI stack may add runtime dependencies that need packaging scrutiny. +5. Scope creep: a TUI can easily become a second web UI. V1 should focus on chat, threads, model/skill/tool visibility, uploads, artifacts, and interruptibility. +6. Run-path divergence: `run_agent()` and `DeerFlowClient` orchestrate runs separately. Factoring session indexing and bookkeeping into a shared module is required to keep terminal and web sessions consistent; skipping it reintroduces the visibility gap and silent drift. + +## Out of Scope + +1. Replacing the web UI. +2. Running or supervising Gateway/frontend/nginx services. +3. Remote HTTP transport to an already-running DeerFlow server. +4. Full desktop app. +5. Voice mode. +6. Shell completion generation. +7. Native Windows `cmd.exe` support beyond what the chosen TUI stack can reasonably support. +8. Multi-user auth/session switching. +9. Direct raw sandbox shell commands outside normal agent tool execution. +10. Reimplementing setup wizard or doctor checks before their logic is made reusable. + +## Documentation Requirements + +When implementation lands, update: + +1. Quick Start docs with `deerflow`, `deerflow --tui`, `deerflow --continue`, and `deerflow chat --print`. +2. Backend development docs with the TUI architecture, module ownership, and test command. +3. Embedded client docs to explain that the TUI is a front-end over `DeerFlowClient`. +4. Any package/install docs that mention available console scripts. + +## Further Notes + +The core product decision is TUI-first, CLI-second. `deerflow` should feel like a terminal workbench for the DeerFlow harness. Headless commands still matter, but they support automation rather than define the interactive product. + +The most important technical decision is runtime ownership. The TUI should be a UI shell over the existing embedded harness. It should not fork agent behavior away from `DeerFlowClient`, because that would split tests, persistence, streaming semantics, and tool behavior across surfaces. 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clip-path="url(#terminal-1714900664-line-0)">claude-opus-4.8</text><text class="terminal-1714900664-r5" x="341.6" y="20" textLength="61" clip-path="url(#terminal-1714900664-line-0)">  ·  </text><text class="terminal-1714900664-r6" x="402.6" y="20" textLength="183" clip-path="url(#terminal-1714900664-line-0)">thread 4f2a8c1d</text><text class="terminal-1714900664-r5" x="585.6" y="20" textLength="61" clip-path="url(#terminal-1714900664-line-0)">  ·  </text><text class="terminal-1714900664-r5" x="646.6" y="20" textLength="488" clip-path="url(#terminal-1714900664-line-0)">/Users/taohe/workspace/deer-flow/backend</text><text class="terminal-1714900664-r5" x="1134.6" y="20" textLength="61" clip-path="url(#terminal-1714900664-line-0)">  ·  </text><text class="terminal-1714900664-r5" x="1195.6" y="20" textLength="24.4" clip-path="url(#terminal-1714900664-line-0)">12</text><text class="terminal-1714900664-r1" x="1268.8" y="20" textLength="12.2" clip-path="url(#terminal-1714900664-line-0)"> +</text><text class="terminal-1714900664-r1" x="1268.8" y="44.4" textLength="12.2" clip-path="url(#terminal-1714900664-line-1)"> +</text><text class="terminal-1714900664-r7" x="24.4" y="68.8" textLength="24.4" clip-path="url(#terminal-1714900664-line-2)">› </text><text class="terminal-1714900664-r7" x="48.8" y="68.8" textLength="500.2" clip-path="url(#terminal-1714900664-line-2)">Add a /usage panel to the TUI status line</text><text class="terminal-1714900664-r1" x="1268.8" y="68.8" textLength="12.2" clip-path="url(#terminal-1714900664-line-2)"> +</text><text class="terminal-1714900664-r1" x="1268.8" y="93.2" textLength="12.2" clip-path="url(#terminal-1714900664-line-3)"> +</text><text class="terminal-1714900664-r8" x="24.4" y="117.6" textLength="24.4" clip-path="url(#terminal-1714900664-line-4)">● </text><text class="terminal-1714900664-r3" x="48.8" y="117.6" textLength="756.4" clip-path="url(#terminal-1714900664-line-4)">I'll wire token usage into the status renderer and add a test.</text><text class="terminal-1714900664-r1" x="1268.8" y="117.6" textLength="12.2" clip-path="url(#terminal-1714900664-line-4)"> +</text><text class="terminal-1714900664-r1" x="1268.8" y="142" textLength="12.2" clip-path="url(#terminal-1714900664-line-5)"> +</text><text class="terminal-1714900664-r9" x="24.4" y="166.4" textLength="48.8" clip-path="url(#terminal-1714900664-line-6)">  ⚙ </text><text class="terminal-1714900664-r10" x="73.2" y="166.4" textLength="48.8" clip-path="url(#terminal-1714900664-line-6)">Read</text><text class="terminal-1714900664-r5" x="122" y="166.4" textLength="292.8" clip-path="url(#terminal-1714900664-line-6)">  deerflow/tui/render.py</text><text class="terminal-1714900664-r11" x="414.8" y="166.4" textLength="48.8" clip-path="url(#terminal-1714900664-line-6)">   ✓</text><text class="terminal-1714900664-r1" x="1268.8" y="166.4" textLength="12.2" clip-path="url(#terminal-1714900664-line-6)"> +</text><text class="terminal-1714900664-r5" x="24.4" y="190.8" textLength="805.2" clip-path="url(#terminal-1714900664-line-7)">    def render_status(state, *, model, thread_label, spinner): ...</text><text class="terminal-1714900664-r1" x="1268.8" y="190.8" textLength="12.2" clip-path="url(#terminal-1714900664-line-7)"> +</text><text class="terminal-1714900664-r1" x="1268.8" y="215.2" textLength="12.2" clip-path="url(#terminal-1714900664-line-8)"> +</text><text class="terminal-1714900664-r9" x="24.4" y="239.6" textLength="48.8" clip-path="url(#terminal-1714900664-line-9)">  ⚙ </text><text class="terminal-1714900664-r10" x="73.2" y="239.6" textLength="48.8" clip-path="url(#terminal-1714900664-line-9)">Bash</text><text class="terminal-1714900664-r5" x="122" y="239.6" textLength="439.2" clip-path="url(#terminal-1714900664-line-9)">  pytest tests/test_tui_render.py -q</text><text class="terminal-1714900664-r11" x="561.2" y="239.6" 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textLength="1220" clip-path="url(#terminal-1714900664-line-21)">────────────────────────────────────────────────────────────────────────────────────────────────────</text><text class="terminal-1714900664-r15" x="1244.4" y="532.4" textLength="12.2" clip-path="url(#terminal-1714900664-line-21)">╮</text><text class="terminal-1714900664-r1" x="1268.8" y="532.4" textLength="12.2" clip-path="url(#terminal-1714900664-line-21)"> +</text><text class="terminal-1714900664-r15" x="12.2" y="556.8" textLength="12.2" clip-path="url(#terminal-1714900664-line-22)">│</text><text class="terminal-1714900664-r14" x="36.6" y="556.8" textLength="24.4" clip-path="url(#terminal-1714900664-line-22)">▌ </text><text class="terminal-1714900664-r4" x="61" y="556.8" textLength="73.2" clip-path="url(#terminal-1714900664-line-22)">/model</text><text class="terminal-1714900664-r5" x="158.6" y="556.8" textLength="256.2" clip-path="url(#terminal-1714900664-line-22)">Open the model picker</text><text 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