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from typing import Any, Dict, List, Optional
from fastapi import APIRouter, Depends, HTTPException, Query
try:
from backend.core.lancedb_handler import get_lancedb_handler
except ImportError:
# Fallback for when imported from main API context
from core.lancedb_handler import get_lancedb_handler
from .pdf_memory_integration import PDFMemoryIntegration
logger = logging.getLogger(__name__)
# Initialize router
router = APIRouter(prefix="/pdf-memory", tags=["PDF Memory"])
# Global service instance
_pdf_memory_service: Optional[PDFMemoryIntegration] = None
def get_pdf_memory_service() -> PDFMemoryIntegration:
"""Get or initialize the PDF memory integration service."""
global _pdf_memory_service
if _pdf_memory_service is None:
lancedb_handler = get_lancedb_handler()
_pdf_memory_service = PDFMemoryIntegration(lancedb_handler=lancedb_handler)
return _pdf_memory_service
@router.get("/status")
async def get_memory_service_status(
service: PDFMemoryIntegration = Depends(get_pdf_memory_service),
):
"""Get the status of the PDF memory integration service."""
try:
status_info = {
"status": "available",
"lancedb_available": service.lancedb_handler is not None,
"table_name": service.table_name,
"capabilities": [
"document_storage",
"semantic_search",
"metadata_management",
"document_retrieval",
"statistics_tracking",
],
}
return status_info
except Exception as e:
logger.error(f"Failed to get memory service status: {e}")
raise HTTPException(
status_code=500, detail=f"Service status check failed: {str(e)}"
)
@router.post("/store")
async def store_processed_pdf(
user_id: str,
processing_result: Dict[str, Any],
source_uri: Optional[str] = None,
tags: Optional[List[str]] = Query(None),
metadata: Optional[Dict[str, Any]] = None,
service: PDFMemoryIntegration = Depends(get_pdf_memory_service),
):
"""
Store processed PDF content in Atom's memory system.
This endpoint takes the output from PDF processing and stores it
with embeddings for semantic search and retrieval.
"""
try:
# Validate required fields
if not user_id:
raise HTTPException(status_code=400, detail="user_id is required")
if not processing_result:
raise HTTPException(status_code=400, detail="processing_result is required")
# Store the processed PDF
storage_result = await service.store_processed_pdf(
user_id=user_id,
processing_result=processing_result,
source_uri=source_uri,
tags=tags,
metadata=metadata,
)
if storage_result["success"]:
return {
"success": True,
"message": "PDF content stored successfully",
"data": storage_result,
}
else:
raise HTTPException(
status_code=500,
detail=f"Failed to store PDF: {storage_result.get('error', 'Unknown error')}",
)
except HTTPException:
raise
except Exception as e:
logger.error(f"PDF storage failed: {e}")
raise HTTPException(status_code=500, detail=f"PDF storage failed: {str(e)}")
@router.get("/search")
async def search_pdfs(
user_id: str,
query: str,
limit: int = Query(10, ge=1, le=100),
similarity_threshold: float = Query(0.7, ge=0.0, le=1.0),
pdf_type: Optional[str] = Query(
None, description="Filter by PDF type: searchable, scanned, mixed"
),
tags: Optional[List[str]] = Query(None),
service: PDFMemoryIntegration = Depends(get_pdf_memory_service),
):
"""
Search PDF documents using semantic search.
This endpoint performs semantic search across stored PDF documents
and returns relevant matches based on the query.
"""
try:
# Validate required fields
if not user_id:
raise HTTPException(status_code=400, detail="user_id is required")
if not query or len(query.strip()) == 0:
raise HTTPException(status_code=400, detail="query is required")
# Build filters
filters = {}
if pdf_type:
if pdf_type not in ["searchable", "scanned", "mixed"]:
raise HTTPException(
status_code=400,
detail="pdf_type must be one of: searchable, scanned, mixed",
)
filters["pdf_type"] = pdf_type
if tags:
filters["tags"] = tags
# Perform search
search_results = await service.search_pdfs(
user_id=user_id,
query=query,
limit=limit,
similarity_threshold=similarity_threshold,
filters=filters,
)
return {
"success": True,
"query": query,
"results_count": len(search_results),
"results": search_results,
}
except HTTPException:
raise
except Exception as e:
logger.error(f"PDF search failed: {e}")
raise HTTPException(status_code=500, detail=f"PDF search failed: {str(e)}")
@router.get("/documents/{doc_id}")
async def get_document(
user_id: str,
doc_id: str,
service: PDFMemoryIntegration = Depends(get_pdf_memory_service),
):
"""
Retrieve a specific PDF document from memory.
Returns the full document data including extracted text and metadata.
"""
try:
# Validate required fields
if not user_id:
raise HTTPException(status_code=400, detail="user_id is required")
if not doc_id:
raise HTTPException(status_code=400, detail="doc_id is required")
# Retrieve document
document = await service.get_document(user_id=user_id, doc_id=doc_id)
if document:
return {"success": True, "document": document}
else:
raise HTTPException(
status_code=404,
detail=f"Document {doc_id} not found for user {user_id}",
)
except HTTPException:
raise
except Exception as e:
logger.error(f"Document retrieval failed: {e}")
raise HTTPException(
status_code=500, detail=f"Document retrieval failed: {str(e)}"
)
@router.delete("/documents/{doc_id}")
async def delete_document(
user_id: str,
doc_id: str,
service: PDFMemoryIntegration = Depends(get_pdf_memory_service),
):
"""
Delete a PDF document from memory.
Removes the document from all storage systems (LanceDB, simple storage, etc.)
"""
try:
# Validate required fields
if not user_id:
raise HTTPException(status_code=400, detail="user_id is required")
if not doc_id:
raise HTTPException(status_code=400, detail="doc_id is required")
# Delete document
delete_result = await service.delete_document(user_id=user_id, doc_id=doc_id)
if delete_result["success"]:
return {
"success": True,
"message": f"Document {doc_id} deleted successfully",
"data": delete_result,
}
else:
raise HTTPException(
status_code=500,
detail=f"Failed to delete document: {delete_result.get('error', 'Unknown error')}",
)
except HTTPException:
raise
except Exception as e:
logger.error(f"Document deletion failed: {e}")
raise HTTPException(
status_code=500, detail=f"Document deletion failed: {str(e)}"
)
@router.get("/users/{user_id}/stats")
async def get_user_document_stats(
user_id: str, service: PDFMemoryIntegration = Depends(get_pdf_memory_service)
):
"""
Get statistics for a user's PDF documents.
Returns counts, storage usage, and breakdown by PDF type.
"""
try:
# Validate required fields
if not user_id:
raise HTTPException(status_code=400, detail="user_id is required")
# Get statistics
stats = await service.get_user_document_stats(user_id=user_id)
return {"success": True, "user_id": user_id, "statistics": stats}
except HTTPException:
raise
except Exception as e:
logger.error(f"Statistics retrieval failed: {e}")
raise HTTPException(
status_code=500, detail=f"Statistics retrieval failed: {str(e)}"
)
@router.get("/users/{user_id}/documents")
async def list_user_documents(
user_id: str,
limit: int = Query(50, ge=1, le=200),
offset: int = Query(0, ge=0),
pdf_type: Optional[str] = Query(None),
tags: Optional[str] = Query(None), # Comma-separated tags
date_from: Optional[str] = Query(None),
date_to: Optional[str] = Query(None),
service: PDFMemoryIntegration = Depends(get_pdf_memory_service),
):
"""
List all PDF documents for a user.
Returns a paginated list of document metadata (without full text content).
Query Parameters:
- limit: Number of results per page (1-200, default 50)
- offset: Number of results to skip (default 0)
- pdf_type: Filter by PDF type (searchable, scanned, mixed)
- tags: Filter by tags (comma-separated list)
- date_from: Filter by start date (ISO format)
- date_to: Filter by end date (ISO format)
"""
try:
# Validate required fields
if not user_id:
raise HTTPException(status_code=400, detail="user_id is required")
# Parse tags if provided
tag_list = None
if tags:
tag_list = [t.strip() for t in tags.split(",") if t.strip()]
# Call the service method
result = await service.list_documents(
user_id=user_id,
limit=limit,
offset=offset,
pdf_type=pdf_type,
tags=tag_list,
date_from=date_from,
date_to=date_to,
)
if not result.get("success"):
raise HTTPException(
status_code=500, detail=result.get("error", "Unknown error")
)
# Format response
return {
"success": True,
"user_id": user_id,
"pagination": {
"limit": result["limit"],
"offset": result["offset"],
"total": result["total"],
},
"documents": result["documents"],
}
except HTTPException:
raise
except Exception as e:
logger.error(f"Document listing failed: {e}")
raise HTTPException(
status_code=500, detail=f"Document listing failed: {str(e)}"
)
@router.post("/documents/{doc_id}/tags")
async def update_document_tags(
doc_id: str,
user_id: str,
tags: List[str],
service: PDFMemoryIntegration = Depends(get_pdf_memory_service),
):
"""
Update tags for a PDF document.
Replaces existing tags with the provided list.
Request Body:
- tags: List of tag strings (max 50 characters each)
Query Parameters:
- user_id: User ID for authentication/authorization
- doc_id: Document ID to update tags for
"""
try:
# Validate required fields
if not user_id:
raise HTTPException(status_code=400, detail="user_id is required")
if not doc_id:
raise HTTPException(status_code=400, detail="doc_id is required")
if not isinstance(tags, list):
raise HTTPException(status_code=400, detail="tags must be a list")
# Call the service method
result = await service.update_document_tags(
user_id=user_id, doc_id=doc_id, tags=tags
)
if not result.get("success"):
# Determine appropriate status code
error_msg = result.get("error", "")
if "not found" in error_msg.lower():
raise HTTPException(status_code=404, detail=error_msg)
else:
raise HTTPException(status_code=500, detail=error_msg)
return {
"success": True,
"doc_id": doc_id,
"tags": result["tags"],
"message": result.get("message", "Tags updated successfully"),
}
except HTTPException:
raise
except Exception as e:
logger.error(f"Tag update failed: {e}")
raise HTTPException(status_code=500, detail=f"Tag update failed: {str(e)}")
@router.get("/documents/{doc_id}/tags")
async def get_document_tags(
doc_id: str,
user_id: str,
service: PDFMemoryIntegration = Depends(get_pdf_memory_service),
):
"""
Get tags for a PDF document.
Query Parameters:
- user_id: User ID for authentication/authorization
- doc_id: Document ID to get tags for
"""
try:
if not user_id:
raise HTTPException(status_code=400, detail="user_id is required")
if not doc_id:
raise HTTPException(status_code=400, detail="doc_id is required")
result = await service.get_document_tags(doc_id=doc_id, user_id=user_id)
if not result.get("success"):
error_msg = result.get("error", "")
if "not found" in error_msg.lower():
raise HTTPException(status_code=404, detail=error_msg)
else:
raise HTTPException(status_code=500, detail=error_msg)
return {
"success": True,
"doc_id": doc_id,
"tags": result["tags"],
"count": result["count"],
}
except HTTPException:
raise
except Exception as e:
logger.error(f"Get tags failed: {e}")
raise HTTPException(status_code=500, detail=f"Get tags failed: {str(e)}")
@router.delete("/documents/{doc_id}/tags")
async def delete_document_tags(
doc_id: str,
user_id: str,
tags: List[str],
service: PDFMemoryIntegration = Depends(get_pdf_memory_service),
):
"""
Delete specific tags from a PDF document.
Query Parameters:
- user_id: User ID for authentication/authorization
- doc_id: Document ID to delete tags from
Request Body:
- tags: List of tag strings to delete
"""
try:
if not user_id:
raise HTTPException(status_code=400, detail="user_id is required")
if not doc_id:
raise HTTPException(status_code=400, detail="doc_id is required")
if not isinstance(tags, list) or len(tags) == 0:
raise HTTPException(status_code=400, detail="tags must be a non-empty list")
result = await service.delete_document_tags(
doc_id=doc_id, user_id=user_id, tags_to_delete=tags
)
if not result.get("success"):
error_msg = result.get("error", "")
if "not found" in error_msg.lower():
raise HTTPException(status_code=404, detail=error_msg)
else:
raise HTTPException(status_code=500, detail=error_msg)
return {
"success": True,
"doc_id": doc_id,
"deleted_tags": result["deleted_tags"],
"deleted_count": result["deleted_count"],
"remaining_tags": result["remaining_tags"],
"message": result.get("message", "Tags deleted successfully"),
}
except HTTPException:
raise
except Exception as e:
logger.error(f"Delete tags failed: {e}")
raise HTTPException(status_code=500, detail=f"Delete tags failed: {str(e)}")
@router.get("/users/{user_id}/documents/search")
async def search_documents_by_tags(
user_id: str,
tags: str = Query(..., description="Comma-separated list of tags to search for"),
match_all: bool = Query(False, description="If true, requires all tags to match"),
service: PDFMemoryIntegration = Depends(get_pdf_memory_service),
):
"""
Search for documents by tags.
Query Parameters:
- user_id: User ID for authentication/authorization
- tags: Comma-separated list of tags to search for
- match_all: If true, requires all tags to match; if false, any tag match is sufficient
"""
try:
if not user_id:
raise HTTPException(status_code=400, detail="user_id is required")
# Parse tags from comma-separated string
tag_list = [t.strip() for t in tags.split(",") if t.strip()]
if not tag_list:
raise HTTPException(status_code=400, detail="At least one tag is required")
result = await service.search_by_tags(
user_id=user_id, tags=tag_list, match_all=match_all
)
if not result.get("success"):
raise HTTPException(status_code=500, detail=result.get("error", "Search failed"))
return {
"success": True,
"user_id": user_id,
"search_tags": tag_list,
"match_all": match_all,
"count": result["count"],
"documents": result["documents"],
}
except HTTPException:
raise
except Exception as e:
logger.error(f"Search by tags failed: {e}")
raise HTTPException(status_code=500, detail=f"Search failed: {str(e)}")
@router.get("/health")
async def health_check(service: PDFMemoryIntegration = Depends(get_pdf_memory_service)):
"""Health check endpoint for PDF memory service."""
try:
# Test basic functionality by checking service status
status_info = await get_memory_service_status(service)
return {
"status": "healthy",
"service": "PDF Memory Integration",
"lancedb_connected": service.lancedb_handler is not None,
"table_available": service.table_name is not None,
}
except Exception as e:
logger.error(f"Health check failed: {e}")
raise HTTPException(status_code=503, detail=f"Service unhealthy: {str(e)}")
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