mirror of
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207 lines
8.1 KiB
Python
207 lines
8.1 KiB
Python
# ========= Copyright 2025-2026 @ Eigent.ai All Rights Reserved. =========
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# ========= Copyright 2025-2026 @ Eigent.ai All Rights Reserved. =========
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import asyncio
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import json
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import logging
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from fastapi import APIRouter, Depends, HTTPException, Response
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from fastapi.responses import StreamingResponse
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from fastapi_babel import _
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from sqlalchemy.sql.expression import case
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from sqlmodel import Session, asc, select
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from app.component.auth import Auth, auth_must
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from app.component.database import session
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from app.model.chat.chat_step import ChatStep, ChatStepIn, ChatStepOut
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logger = logging.getLogger("server_chat_step")
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router = APIRouter(prefix="/chat", tags=["Chat Step Management"])
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@router.get("/steps", name="list chat steps", response_model=list[ChatStepOut])
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async def list_chat_steps(
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task_id: str, step: str | None = None, session: Session = Depends(session), auth: Auth = Depends(auth_must)
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):
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"""List chat steps for a task with optional step type filtering."""
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user_id = auth.user.id
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query = select(ChatStep)
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if task_id is not None:
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query = query.where(ChatStep.task_id == task_id)
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if step is not None:
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query = query.where(ChatStep.step == step)
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chat_steps = session.exec(query).all()
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logger.debug(
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"Chat steps listed", extra={"user_id": user_id, "task_id": task_id, "step_type": step, "count": len(chat_steps)}
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)
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return chat_steps
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@router.get("/steps/playback/{task_id}", name="Playback Chat Step via SSE")
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async def share_playback(
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task_id: str, delay_time: float = 0, session: Session = Depends(session), auth: Auth = Depends(auth_must)
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):
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"""Playback chat steps via SSE stream."""
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user_id = auth.user.id
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if delay_time > 5:
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logger.debug(
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"Delay time capped", extra={"user_id": user_id, "task_id": task_id, "requested": delay_time, "capped": 5}
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)
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delay_time = 5
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async def event_generator():
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try:
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stmt = (
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select(ChatStep)
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.where(ChatStep.task_id == task_id)
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.order_by(
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asc(case((ChatStep.timestamp.is_(None), 1), else_=0)), asc(ChatStep.timestamp), asc(ChatStep.id)
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)
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)
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steps = session.exec(stmt).all()
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if not steps:
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logger.warning("No steps found for playback", extra={"user_id": user_id, "task_id": task_id})
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yield f"data: {json.dumps({'error': 'No steps found for this task.'})}\n\n"
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return
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logger.info(
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"Chat step playback started",
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extra={"user_id": user_id, "task_id": task_id, "step_count": len(steps), "delay_time": delay_time},
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)
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for step in steps:
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step_data = {
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"id": step.id,
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"task_id": step.task_id,
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"step": step.step,
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"data": step.data,
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"created_at": step.created_at.isoformat() if step.created_at else None,
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}
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yield f"data: {json.dumps(step_data)}\n\n"
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if delay_time > 0:
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await asyncio.sleep(delay_time)
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logger.info(
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"Chat step playback completed", extra={"user_id": user_id, "task_id": task_id, "step_count": len(steps)}
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)
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except Exception as e:
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logger.error(
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"Chat step playback error",
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extra={"user_id": user_id, "task_id": task_id, "error": str(e)},
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exc_info=True,
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)
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yield f"data: {json.dumps({'error': 'Playback error occurred.'})}\n\n"
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return StreamingResponse(event_generator(), media_type="text/event-stream")
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@router.get("/steps/{step_id}", name="get chat step", response_model=ChatStepOut)
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async def get_chat_step(step_id: int, session: Session = Depends(session), auth: Auth = Depends(auth_must)):
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"""Get specific chat step."""
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user_id = auth.user.id
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chat_step = session.get(ChatStep, step_id)
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if not chat_step:
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logger.warning("Chat step not found", extra={"user_id": user_id, "step_id": step_id})
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raise HTTPException(status_code=404, detail=_("Chat step not found"))
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logger.debug("Chat step retrieved", extra={"user_id": user_id, "step_id": step_id, "task_id": chat_step.task_id})
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return chat_step
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@router.post("/steps", name="create chat step")
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async def create_chat_step(step: ChatStepIn, session: Session = Depends(session)):
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"""Create new chat step. TODO: Implement request source validation."""
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try:
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chat_step = ChatStep(task_id=step.task_id, step=step.step, data=step.data, timestamp=step.timestamp)
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session.add(chat_step)
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session.commit()
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session.refresh(chat_step)
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logger.info(
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"Chat step created", extra={"step_id": chat_step.id, "task_id": step.task_id, "step_type": step.step}
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)
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return {"code": 200, "msg": "success"}
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except Exception as e:
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session.rollback()
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logger.error(
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"Chat step creation failed",
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extra={"task_id": step.task_id, "step_type": step.step, "error": str(e)},
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exc_info=True,
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)
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raise HTTPException(status_code=500, detail="Internal server error")
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@router.put("/steps/{step_id}", name="update chat step", response_model=ChatStepOut)
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async def update_chat_step(
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step_id: int, chat_step_update: ChatStep, session: Session = Depends(session), auth: Auth = Depends(auth_must)
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):
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"""Update chat step."""
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user_id = auth.user.id
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db_chat_step = session.get(ChatStep, step_id)
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if not db_chat_step:
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logger.warning("Chat step not found for update", extra={"user_id": user_id, "step_id": step_id})
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raise HTTPException(status_code=404, detail=_("Chat step not found"))
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try:
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update_data = chat_step_update.dict(exclude_unset=True)
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for key, value in update_data.items():
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setattr(db_chat_step, key, value)
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session.add(db_chat_step)
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session.commit()
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session.refresh(db_chat_step)
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logger.info(
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"Chat step updated",
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extra={
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"user_id": user_id,
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"step_id": step_id,
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"task_id": db_chat_step.task_id,
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"fields_updated": list(update_data.keys()),
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},
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)
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return db_chat_step
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except Exception as e:
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session.rollback()
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logger.error(
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"Chat step update failed", extra={"user_id": user_id, "step_id": step_id, "error": str(e)}, exc_info=True
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)
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raise HTTPException(status_code=500, detail="Internal server error")
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@router.delete("/steps/{step_id}", name="delete chat step")
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async def delete_chat_step(step_id: int, session: Session = Depends(session), auth: Auth = Depends(auth_must)):
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"""Delete chat step."""
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user_id = auth.user.id
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db_chat_step = session.get(ChatStep, step_id)
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if not db_chat_step:
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logger.warning("Chat step not found for deletion", extra={"user_id": user_id, "step_id": step_id})
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raise HTTPException(status_code=404, detail=_("Chat step not found"))
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try:
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session.delete(db_chat_step)
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session.commit()
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logger.info(
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"Chat step deleted", extra={"user_id": user_id, "step_id": step_id, "task_id": db_chat_step.task_id}
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)
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return Response(status_code=204)
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except Exception as e:
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session.rollback()
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logger.error(
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"Chat step deletion failed", extra={"user_id": user_id, "step_id": step_id, "error": str(e)}, exc_info=True
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)
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raise HTTPException(status_code=500, detail="Internal server error")
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