feat(backend): add DingTalk document to knowledge base MCP tool

backend/app/mcp_server/server.py

@@ -207,6 +207,7 @@ def _register_knowledge_tools() -> None:
     # The decorators will add tools to the global registry
     from app.mcp_server.tool_registry import register_tools_to_server
     from app.mcp_server.tools import (  # noqa: F401 side-effect: triggers @mcp_tool registration
+        dingtalk_docs,
         knowledge,
     )
 

backend/app/mcp_server/tools/dingtalk_docs.py

@@ -0,0 +1,321 @@
+# SPDX-FileCopyrightText: 2025 WeCode, Inc.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+"""
+DingTalk Document MCP tools for knowledge base integration.
+
+This module provides MCP tool implementations for adding DingTalk documents
+to Wegent knowledge bases. The tools coordinate with sandbox execution to:
+1. Download DingTalk document content
+2. Save with name {title}.{file_extension}
+3. Upload as attachment
+4. Create knowledge base document
+
+These tools are registered with the MCP server and exposed to AI agents.
+"""
+
+import logging
+from typing import Any, Dict, Optional
+
+from app.db.session import SessionLocal
+from app.mcp_server.auth import TaskTokenInfo
+from app.mcp_server.tools.decorator import build_mcp_tools_dict, mcp_tool
+from app.mcp_server.tools.knowledge import _get_user_from_token
+from app.services.dingtalk.docs_service import dingtalk_docs_service
+from app.services.knowledge.orchestrator import knowledge_orchestrator
+
+logger = logging.getLogger(__name__)
+
+
+@mcp_tool(
+    name="get_dingtalk_document_info",
+    description="Get information about a DingTalk document from its URL.",
+    server="knowledge",
+    param_descriptions={
+        "doc_url": "DingTalk document URL (e.g., https://alidocs.dingtalk.com/i/nodes/xxx)",
+    },
+)
+async def get_dingtalk_document_info(
+    token_info: TaskTokenInfo,
+    doc_url: str,
+) -> Dict[str, Any]:
+    """
+    Get DingTalk document information including title and modification time.
+
+    Args:
+        token_info: Task token information containing user context
+        doc_url: DingTalk document URL
+
+    Returns:
+        Dict with document info:
+        - doc_id: Document ID
+        - title: Document title
+        - modified_time: ISO format modification time
+        - content_type: Content type
+        - url: Original URL
+    """
+    try:
+        # Get user preferences for MCP config
+        db = SessionLocal()
+        try:
+            user = _get_user_from_token(db, token_info)
+            user_preferences = user.preferences if user else None
+        finally:
+            db.close()
+
+        doc_info = await dingtalk_docs_service.get_document_info(
+            doc_url, user_preferences=user_preferences
+        )
+        return {
+            "success": True,
+            "doc_id": doc_info["doc_id"],
+            "title": doc_info["title"],
+            "modified_time": doc_info["modified_time"],
+            "content_type": doc_info["content_type"],
+            "url": doc_info["url"],
+        }
+    except ValueError as e:
+        logger.warning(f"[MCP] get_dingtalk_document_info validation error: {e}")
+        return {"success": False, "error": str(e)}
+    except Exception as e:
+        logger.error(f"[MCP] get_dingtalk_document_info error: {e}", exc_info=True)
+        return {"success": False, "error": f"Failed to get document info: {e}"}
+
+
+@mcp_tool(
+    name="add_dingtalk_doc_to_knowledge",
+    description="Add a DingTalk document to Wegent knowledge base. Downloads the document, saves it with naming {title}.{file_extension}, and creates a knowledge base document.",
+    server="knowledge",
+    param_descriptions={
+        "knowledge_base_id": "Target knowledge base ID",
+        "doc_url": "DingTalk document URL",
+        "doc_title": "Document title (optional, will be fetched from DingTalk if not provided)",
+        "doc_content": "Document content (optional, will be downloaded from DingTalk if not provided)",
+        "modified_time": "Document modification time in YYYYMMDDHHMMSS format (optional)",
+        "trigger_indexing": "Whether to trigger RAG indexing (default: True)",
+        "trigger_summary": "Whether to trigger summary generation (default: True)",
+    },
+)
+async def add_dingtalk_doc_to_knowledge(
+    token_info: TaskTokenInfo,
+    knowledge_base_id: int,
+    doc_url: str,
+    doc_title: Optional[str] = None,
+    doc_content: Optional[str] = None,
+    modified_time: Optional[str] = None,
+    trigger_indexing: bool = True,
+    trigger_summary: bool = True,
+) -> Dict[str, Any]:
+    """
+    Add a DingTalk document to Wegent knowledge base.
+
+    This tool creates a knowledge base document from a DingTalk document.
+    The document can be provided directly via parameters or fetched from DingTalk.
+
+    File name: {title}.{file_extension}
+    Example: 产品需求文档.md
+
+    Args:
+        token_info: Task token information containing user context
+        knowledge_base_id: Target knowledge base ID
+        doc_url: DingTalk document URL (for reference and metadata)
+        doc_title: Document title (optional)
+        doc_content: Document content (optional, markdown format preferred)
+        modified_time: Modification time in YYYYMMDDHHMMSS format (optional)
+        trigger_indexing: Whether to trigger RAG indexing
+        trigger_summary: Whether to trigger summary generation
+
+    Returns:
+        Dict with operation result:
+        - success: Whether the operation succeeded
+        - document_id: Created document ID
+        - document_name: Document name
+        - message: Status message
+    """
+    db = SessionLocal()
+    try:
+        user = _get_user_from_token(db, token_info)
+        if not user:
+            return {"success": False, "error": "User not found"}
+
+        # Variables to store document metadata from DingTalk
+        file_extension = "md"
+        update_time = None
+
+        # If content not provided, fetch from DingTalk
+        if not doc_content:
+            logger.info(
+                f"[MCP] Content not provided, fetching from DingTalk: {doc_url}"
+            )
+            try:
+                # Get user preferences for MCP config
+                user_preferences = user.preferences if user else None
+                doc_download = await dingtalk_docs_service.download_document_content(
+                    doc_url, user_preferences=user_preferences
+                )
+                doc_content = doc_download.get("content", "")
+                # Use fetched title if not provided
+                if not doc_title:
+                    doc_title = doc_download.get("title", "DingTalk Document")
+                # Use fetched modified_time if not provided
+                if not modified_time:
+                    modified_time = doc_download.get("modified_time_formatted")
+                # Get file_extension from DingTalk response
+                file_extension = doc_download.get("file_extension", "md")
+                # Get original updateTime for source_config
+                update_time = doc_download.get("modified_time")
+            except Exception as e:
+                logger.error(f"[MCP] Failed to fetch document from DingTalk: {e}")
+                return {
+                    "success": False,
+                    "error": f"Failed to fetch document from DingTalk: {e}",
+                }
+
+        if not doc_content:
+            return {
+                "success": False,
+                "error": "Failed to get document content from DingTalk",
+            }
+
+        # Use provided title or extract from URL
+        title = doc_title or "DingTalk Document"
+
+        # Build filename: {title}.{file_extension}
+        from app.services.knowledge.orchestrator import _build_filename
+
+        filename = _build_filename(title, file_extension)
+
+        logger.info(
+            f"[MCP] Adding DingTalk doc to KB {knowledge_base_id}: "
+            f"title='{title}', filename='{filename}'"
+        )
+
+        # Create document with text content (run in thread to avoid blocking)
+        # The content is expected to be markdown from DingTalk
+        import asyncio
+
+        # Build source_config with DingTalk document metadata
+        source_config = {
+            "url": doc_url,
+            "source": "dingtalk-connector",
+            "updated_at": update_time or modified_time,
+        }
+
+        result = await asyncio.to_thread(
+            knowledge_orchestrator.create_document_with_content,
+            db=db,
+            user=user,
+            knowledge_base_id=knowledge_base_id,
+            name=title,
+            source_type="text",
+            content=doc_content,
+            file_extension=file_extension,
+            trigger_indexing=trigger_indexing,
+            trigger_summary=trigger_summary,
+            source_config=source_config,
+        )
+
+        return {
+            "success": True,
+            "document_id": result.id,
+            "document_name": result.name,
+            "filename": filename,
+            "message": f"Document '{title}' added to knowledge base successfully",
+        }
+
+    except ValueError as e:
+        logger.warning(f"[MCP] add_dingtalk_doc_to_knowledge validation error: {e}")
+        return {"success": False, "error": str(e)}
+    except Exception as e:
+        logger.error(f"[MCP] add_dingtalk_doc_to_knowledge error: {e}", exc_info=True)
+        return {"success": False, "error": f"Failed to add document: {e}"}
+    finally:
+        db.close()
+
+
+@mcp_tool(
+    name="add_dingtalk_doc_with_attachment",
+    description="Add a DingTalk document to knowledge base using an existing attachment. This is used after the skill uploads the document as an attachment.",
+    server="knowledge",
+    param_descriptions={
+        "knowledge_base_id": "Target knowledge base ID",
+        "doc_title": "Document title",
+        "attachment_id": "Existing attachment ID from upload_attachment tool",
+        "trigger_indexing": "Whether to trigger RAG indexing (default: True)",
+        "trigger_summary": "Whether to trigger summary generation (default: True)",
+    },
+)
+def add_dingtalk_doc_with_attachment(
+    token_info: TaskTokenInfo,
+    knowledge_base_id: int,
+    doc_title: str,
+    attachment_id: int,
+    trigger_indexing: bool = True,
+    trigger_summary: bool = True,
+) -> Dict[str, Any]:
+    """
+    Add a DingTalk document to knowledge base using an existing attachment.
+
+    This tool is designed to work with the dingtalk-connector skill which:
+    1. Downloads the DingTalk document in sandbox
+    2. Saves it as {title}.{file_extension}
+    3. Uploads it as an attachment
+    4. Calls this tool to create the knowledge base document
+
+    Args:
+        token_info: Task token information containing user context
+        knowledge_base_id: Target knowledge base ID
+        doc_title: Document title
+        attachment_id: Attachment ID from upload_attachment tool
+        trigger_indexing: Whether to trigger RAG indexing
+        trigger_summary: Whether to trigger summary generation
+
+    Returns:
+        Dict with operation result
+    """
+    db = SessionLocal()
+    try:
+        user = _get_user_from_token(db, token_info)
+        if not user:
+            return {"success": False, "error": "User not found"}
+
+        logger.info(
+            f"[MCP] Adding DingTalk doc with attachment to KB {knowledge_base_id}: "
+            f"title='{doc_title}', attachment_id={attachment_id}"
+        )
+
+        # Create document with attachment reference
+        result = knowledge_orchestrator.create_document_with_content(
+            db=db,
+            user=user,
+            knowledge_base_id=knowledge_base_id,
+            name=doc_title,
+            source_type="attachment",
+            attachment_id=attachment_id,
+            trigger_indexing=trigger_indexing,
+            trigger_summary=trigger_summary,
+        )
+
+        return {
+            "success": True,
+            "document_id": result.id,
+            "document_name": result.name,
+            "attachment_id": attachment_id,
+            "message": f"Document '{doc_title}' added to knowledge base successfully",
+        }
+
+    except ValueError as e:
+        logger.warning(f"[MCP] add_dingtalk_doc_with_attachment validation error: {e}")
+        return {"success": False, "error": str(e)}
+    except Exception as e:
+        logger.error(
+            f"[MCP] add_dingtalk_doc_with_attachment error: {e}", exc_info=True
+        )
+        return {"success": False, "error": f"Failed to add document: {e}"}
+    finally:
+        db.close()
+
+
+# Build tool registry from decorated functions
+DINGTALK_DOCS_MCP_TOOLS = build_mcp_tools_dict(server="knowledge")

backend/app/services/dingtalk/__init__.py

@@ -0,0 +1,15 @@
+# SPDX-FileCopyrightText: 2025 WeCode, Inc.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+"""DingTalk services package."""
+
+from app.services.dingtalk.docs_service import (
+    DingTalkDocsService,
+    dingtalk_docs_service,
+)
+
+__all__ = [
+    "DingTalkDocsService",
+    "dingtalk_docs_service",
+]