reorg content graph

open_notebook/graphs/content_processing/__init__.py

@@ -0,0 +1,136 @@
+import os
+
+import magic
+from langgraph.graph import END, START, StateGraph
+from loguru import logger
+
+from open_notebook.exceptions import UnsupportedTypeException
+from open_notebook.graphs.content_processing.audio import extract_audio
+from open_notebook.graphs.content_processing.office import (
+    SUPPORTED_OFFICE_TYPES,
+    extract_office_content,
+)
+from open_notebook.graphs.content_processing.pdf import (
+    SUPPORTED_FITZ_TYPES,
+    extract_pdf,
+)
+from open_notebook.graphs.content_processing.state import SourceState
+from open_notebook.graphs.content_processing.text import extract_txt
+from open_notebook.graphs.content_processing.url import extract_url, url_provider
+from open_notebook.graphs.content_processing.video import extract_best_audio_from_video
+from open_notebook.graphs.content_processing.youtube import extract_youtube_transcript
+
+
+def source_identification(state: SourceState):
+    """
+    Identify the content source based on parameters
+    """
+    if state.get("content"):
+        doc_type = "text"
+    elif state.get("file_path"):
+        doc_type = "file"
+    elif state.get("url"):
+        doc_type = "url"
+    else:
+        raise ValueError("No source provided.")
+
+    return {"source_type": doc_type}
+
+
+def file_type(state: SourceState):
+    """
+    Identify the file using python-magic
+    """
+    return_dict = {}
+    file_path = state.get("file_path")
+    if file_path is not None:
+        return_dict["identified_type"] = magic.from_file(file_path, mime=True)
+    return return_dict
+
+
+# def _get_title(url):
+#     """
+#     Get the content of a URL
+#     """
+#     response = extract_url(dict(url=url))
+#     if "title" in response:
+#         return response["title"]
+
+
+def file_type_edge(data: SourceState):
+    assert data.get("identified_type"), "Type not identified"
+    identified_type = data["identified_type"]
+
+    if identified_type == "text/plain":
+        return "extract_txt"
+    elif identified_type in SUPPORTED_FITZ_TYPES:
+        return "extract_pdf"
+    elif identified_type in SUPPORTED_OFFICE_TYPES:
+        return "extract_office_content"
+    elif identified_type.startswith("video"):
+        return "extract_best_audio_from_video"
+    elif identified_type.startswith("audio"):
+        return "extract_audio"
+    else:
+        raise UnsupportedTypeException(
+            f"Unsupported file type: {data.get('identified_type')}"
+        )
+
+
+def delete_file(data: SourceState):
+    if data.get("delete_source"):
+        logger.debug(f"Deleting file: {data.get('file_path')}")
+        file_path = data.get("file_path")
+        if file_path is not None:
+            try:
+                os.remove(file_path)
+                return {"file_path": None}
+            except FileNotFoundError:
+                logger.warning(f"File not found while trying to delete: {file_path}")
+    else:
+        logger.debug("Not deleting file")
+
+
+workflow = StateGraph(SourceState)
+workflow.add_node("source", source_identification)
+workflow.add_node("url_provider", url_provider)
+workflow.add_node("file_type", file_type)
+workflow.add_node("extract_txt", extract_txt)
+workflow.add_node("extract_pdf", extract_pdf)
+workflow.add_node("extract_url", extract_url)
+workflow.add_node("extract_office_content", extract_office_content)
+workflow.add_node("extract_best_audio_from_video", extract_best_audio_from_video)
+workflow.add_node("extract_audio", extract_audio)
+workflow.add_node("extract_youtube_transcript", extract_youtube_transcript)
+workflow.add_node("delete_file", delete_file)
+workflow.add_edge(START, "source")
+workflow.add_conditional_edges(
+    "source",
+    lambda x: x.get("source_type"),
+    {
+        "url": "url_provider",
+        "file": "file_type",
+        "text": END,
+    },
+)
+workflow.add_conditional_edges(
+    "file_type",
+    file_type_edge,
+)
+workflow.add_conditional_edges(
+    "url_provider",
+    lambda x: x.get("identified_type"),
+    {"article": "extract_url", "youtube": "extract_youtube_transcript"},
+)
+workflow.add_edge("url_provider", END)
+workflow.add_edge("file_type", END)
+workflow.add_edge("extract_url", END)
+workflow.add_edge("extract_txt", END)
+workflow.add_edge("extract_youtube_transcript", END)
+
+workflow.add_edge("extract_pdf", "delete_file")
+workflow.add_edge("extract_office_content", "delete_file")
+workflow.add_edge("extract_best_audio_from_video", "extract_audio")
+workflow.add_edge("extract_audio", "delete_file")
+workflow.add_edge("delete_file", END)
+graph = workflow.compile()