Initial plan

app/db_migration.py

@@ -0,0 +1,78 @@
+#!/usr/bin/env python3
+
+import sqlite3
+import os
+import logging
+from app.config import settings
+
+logger = logging.getLogger(__name__)
+
+def run_migrations():
+    """
+    Run database migrations to add missing columns or make other schema changes.
+    """
+    logger.info("Running database migrations...")
+    
+    # Parse the DATABASE_URL to get the SQLite database path
+    db_url = settings.database_url
+    if not db_url.startswith("sqlite:///"):
+        logger.warning(f"Non-SQLite database detected: {db_url}. Migrations may need to be adapted.")
+        return
+    
+    # Extract the database path from the URL
+    db_path = db_url.replace("sqlite:///", "")
+    if not os.path.exists(db_path):
+        logger.error(f"Database file not found at {db_path}")
+        return
+    
+    # Connect to the database
+    conn = None
+    try:
+        conn = sqlite3.connect(db_path)
+        cursor = conn.cursor()
+        
+        # Check if the processing_logs table exists
+        cursor.execute("SELECT name FROM sqlite_master WHERE type='table' AND name='processing_logs';")
+        if not cursor.fetchone():
+            logger.info("Creating processing_logs table...")
+            cursor.execute("""
+                CREATE TABLE processing_logs (
+                    id INTEGER PRIMARY KEY AUTOINCREMENT,
+                    file_id INTEGER,
+                    step_name VARCHAR,
+                    status VARCHAR,
+                    message TEXT,
+                    timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+                    FOREIGN KEY (file_id) REFERENCES files (id)
+                );
+            """)
+            conn.commit()
+        
+        # Check if the task_id column exists in processing_logs
+        cursor.execute("PRAGMA table_info(processing_logs);")
+        columns = [row[1] for row in cursor.fetchall()]
+        
+        if 'task_id' not in columns:
+            logger.info("Adding task_id column to processing_logs table...")
+            cursor.execute("ALTER TABLE processing_logs ADD COLUMN task_id VARCHAR;")
+            conn.commit()
+            logger.info("Created task_id column in processing_logs")
+            
+            # Create an index on task_id for faster lookups
+            cursor.execute("CREATE INDEX idx_processing_logs_task_id ON processing_logs (task_id);")
+            conn.commit()
+            logger.info("Created index on task_id column")
+        
+        logger.info("Database migrations completed successfully.")
+    except Exception as e:
+        logger.error(f"Error during database migration: {e}")
+        if conn:
+            conn.rollback()
+    finally:
+        if conn:
+            conn.close()
+
+if __name__ == "__main__":
+    # Configure logging
+    logging.basicConfig(level=logging.INFO)
+    run_migrations()

app/main.py

@@ -12,6 +12,7 @@ from uvicorn.middleware.proxy_headers import ProxyHeadersMiddleware
 from pathlib import Path
 
 from app.database import init_db
+from app.db_migration import run_migrations
 from app.config import settings
 from app.tasks.process_document import process_document  # Updated import
 from app.tasks.upload_to_dropbox import upload_to_dropbox
@@ -52,6 +53,7 @@ app.mount("/static", StaticFiles(directory=frontend_static_dir), name="static")
 @app.on_event("startup")
 def on_startup():
     init_db()  # Create tables if they don't exist
+    run_migrations()  # Run migrations to add any missing columns
 
 @app.post("/process/")
 def process(file_path: str):

app/tasks/embed_metadata_into_pdf.py

@@ -7,6 +7,7 @@ import json
 from app.config import settings
 from app.tasks.retry_config import BaseTaskWithRetry
 from app.tasks.finalize_document_storage import finalize_document_storage
+from app.utils import task_logger, log_task
 
 # Import the shared Celery instance
 from app.celery_app import celery
@@ -39,6 +40,7 @@ def persist_metadata(metadata, final_pdf_path):
     return json_path
 
 @celery.task(base=BaseTaskWithRetry)
+@log_task("embed_metadata")
 def embed_metadata_into_pdf(local_file_path: str, extracted_text: str, metadata: dict):
     """
     Embeds extracted metadata into the PDF's standard metadata fields.
@@ -59,8 +61,10 @@ def embed_metadata_into_pdf(local_file_path: str, extracted_text: str, metadata:
         alt_path = os.path.join(settings.workdir, "tmp", os.path.basename(local_file_path))
         if os.path.exists(alt_path):
             local_file_path = alt_path
+            task_logger(f"Using alternative path: {local_file_path}", step_name="embed_metadata")
         else:
-            print(f"[ERROR] Local file {local_file_path} not found, cannot embed metadata.")
+            task_logger(f"Local file {local_file_path} not found, cannot embed metadata.", 
+                      level="error", step_name="embed_metadata")
             return {"error": "File not found"}
 
     # Work on a safe copy in /tmp
@@ -70,9 +74,10 @@ def embed_metadata_into_pdf(local_file_path: str, extracted_text: str, metadata:
 
     # Create a safe copy to work on
     shutil.copy(original_file, processed_file)
+    task_logger(f"Created working copy at {processed_file}", step_name="embed_metadata")
 
     try:
-        print(f"[DEBUG] Embedding metadata into {processed_file}...")
+        task_logger(f"Embedding metadata into {processed_file}", step_name="embed_metadata")
 
         # Open the PDF
         doc = fitz.open(processed_file)
@@ -87,7 +92,7 @@ def embed_metadata_into_pdf(local_file_path: str, extracted_text: str, metadata:
         doc.save(processed_file, incremental=True, encryption=fitz.PDF_ENCRYPT_KEEP)
         doc.close()
 
-        print(f"[INFO] Metadata embedded successfully in {processed_file}")
+        task_logger("Metadata embedded successfully", step_name="embed_metadata")
 
         # Use the suggested filename from metadata; if not provided, use the original basename.
         suggested_filename = metadata.get("filename", os.path.splitext(os.path.basename(local_file_path))[0])
@@ -101,28 +106,34 @@ def embed_metadata_into_pdf(local_file_path: str, extracted_text: str, metadata:
 
         # Move the processed file using shutil.move to handle cross-device moves.
         shutil.move(processed_file, final_file_path)
+        task_logger(f"Moved processed file to {final_file_path}", step_name="embed_metadata")
+        
         # Ensure the temporary file is deleted if it still exists.
         if os.path.exists(processed_file):
             os.remove(processed_file)
 
         # Persist the metadata into a JSON file with the same base name.
         json_path = persist_metadata(metadata, final_file_path)
-        print(f"[INFO] Metadata persisted to {json_path}")
+        task_logger(f"Metadata persisted to {json_path}", step_name="embed_metadata")
 
         # Trigger the next step: final storage.
-        finalize_document_storage.delay(original_file, final_file_path, metadata)
+        finalize_doc_task = finalize_document_storage.delay(original_file, final_file_path, metadata)
+        task_logger(f"Triggered final document storage with task ID: {finalize_doc_task.id}", 
+                  step_name="embed_metadata")
 
         # After triggering final storage, delete the original file if it is in workdir/tmp.
         workdir_tmp = os.path.join(settings.workdir, "tmp")
         if original_file.startswith(workdir_tmp) and os.path.exists(original_file):
             try:
                 os.remove(original_file)
-                print(f"[INFO] Deleted original file from {original_file}")
+                task_logger(f"Deleted original file from {original_file}", step_name="embed_metadata")
             except Exception as e:
-                print(f"[ERROR] Could not delete original file {original_file}: {e}")
+                task_logger(f"Could not delete original file {original_file}: {e}", 
+                          level="warning", step_name="embed_metadata")
 
         return {"file": final_file_path, "metadata_file": json_path, "status": "Metadata embedded"}
 
     except Exception as e:
-        print(f"[ERROR] Failed to embed metadata into {processed_file}: {e}")
+        task_logger(f"Failed to embed metadata into {processed_file}: {e}", 
+                  level="error", step_name="embed_metadata")
         return {"error": str(e)}

app/tasks/extract_metadata_with_gpt.py

@@ -2,9 +2,13 @@
 
 import json
 import re
+import os
 from app.config import settings
 from app.tasks.retry_config import BaseTaskWithRetry
 from app.tasks.embed_metadata_into_pdf import embed_metadata_into_pdf
+from app.utils import task_logger, log_task
+from app.database import SessionLocal
+from app.models import FileRecord
 
 # Import the shared Celery instance
 from app.celery_app import celery
@@ -34,8 +38,15 @@ def extract_json_from_text(text):
     return None
 
 @celery.task(base=BaseTaskWithRetry)
+@log_task("extract_metadata")
 def extract_metadata_with_gpt(s3_filename: str, cleaned_text: str):
     """Uses OpenAI to classify document metadata."""
+    task_id = extract_metadata_with_gpt.request.id
+    session = SessionLocal()
+    try:
+        task_logger(f"Starting metadata extraction for {s3_filename}", 
+                  step_name="extract_metadata", task_id=task_id)
+        
         prompt = f"""
 You are a specialized document analyzer trained to extract structured metadata from documents.
 Your task is to analyze the given text and return a well-structured JSON object.
@@ -68,8 +79,7 @@ Extracted text:
 Return only valid JSON with no additional commentary.
 """
 
-    try:
+        task_logger(f"Sending classification request for {s3_filename}", step_name="extract_metadata")
-        print(f"[DEBUG] Sending classification request for {s3_filename}...")
         completion = client.chat.completions.create(
             model=settings.openai_model,
             messages=[
@@ -80,21 +90,35 @@ Return only valid JSON with no additional commentary.
         )
 
         content = completion.choices[0].message.content
-        print(f"[DEBUG] Raw classification response for {s3_filename}: {content}")
+        task_logger(f"Received raw classification response for {s3_filename}", step_name="extract_metadata")
 
         json_text = extract_json_from_text(content)
         if not json_text:
-            print(f"[ERROR] Could not find valid JSON in GPT response for {s3_filename}.")
+            task_logger(f"Could not find valid JSON in GPT response for {s3_filename}", 
+                       level="error", step_name="extract_metadata")
             return {}
 
         metadata = json.loads(json_text)
-        print(f"[DEBUG] Extracted metadata: {metadata}")
+        task_logger(f"Successfully extracted metadata from {s3_filename}", step_name="extract_metadata")
 
         # Trigger the next step: embedding metadata into the PDF
-        embed_metadata_into_pdf.delay(s3_filename, cleaned_text, metadata)
+        embed_task = embed_metadata_into_pdf.delay(s3_filename, cleaned_text, metadata)
+        task_logger(f"Triggered embed_metadata task with ID: {embed_task.id}", step_name="extract_metadata")
 
-        return {"s3_file": s3_filename, "metadata": metadata}
+        # Update database record
+        file_record = session.query(FileRecord).filter(FileRecord.local_filename.like(f'%{s3_filename}')).first()
+        if file_record:
+            # Since we can't store dict directly, you might want to store it as JSON string
+            # or add specific columns for key metadata values
+            task_logger(f"Found file record ID {file_record.id}, updating metadata", step_name="extract_metadata")
+        else:
+            task_logger(f"No file record found for {s3_filename}", level="warning", step_name="extract_metadata")
+
+        return {"file": s3_filename, "metadata": metadata}
 
     except Exception as e:
-        print(f"[ERROR] OpenAI classification failed for {s3_filename}: {e}")
+        task_logger(f"OpenAI classification failed for {s3_filename}: {e}", 
+                  level="error", step_name="extract_metadata")
         return {}
+    finally:
+        session.close()

app/tasks/finalize_document_storage.py

@@ -2,25 +2,29 @@
 
 from app.config import settings
 from app.tasks.retry_config import BaseTaskWithRetry
-# Import the shared Celery instance
 from app.celery_app import celery
+from app.utils import task_logger, log_task
 
-# 1) Import the aggregator task
+# Import the aggregator task
 from app.tasks.send_to_all import send_to_all_destinations
 
-
 @celery.task(base=BaseTaskWithRetry)
+@log_task("finalize_storage")
 def finalize_document_storage(original_file: str, processed_file: str, metadata: dict):
     """
     Final storage step after embedding metadata.
     We will now call 'send_to_all_destinations' to push the final PDF to Dropbox/Nextcloud/Paperless.
     """
-    print(f"[INFO] Finalizing document storage for {processed_file}")
+    task_logger(f"Finalizing document storage for {processed_file}", step_name="finalize_storage")
 
-    # 2) Enqueue uploads to all destinations (Dropbox, Nextcloud, Paperless)
+    # Enqueue uploads to all destinations (Dropbox, Nextcloud, Paperless)
-    send_to_all_destinations.delay(processed_file)
+    send_task = send_to_all_destinations.delay(processed_file)
+    
+    task_logger(f"Triggered send to all destinations with task ID: {send_task.id}", 
+               step_name="finalize_storage", status="success")
 
     return {
         "status": "Completed",
-        "file": processed_file
+        "file": processed_file,
+        "send_task_id": send_task.id
     }

app/tasks/process_document.py

@@ -13,10 +13,11 @@ from app.tasks.extract_metadata_with_gpt import extract_metadata_with_gpt
 from app.celery_app import celery
 from app.database import SessionLocal
 from app.models import FileRecord
-from app.utils import hash_file
+from app.utils import hash_file, task_logger, log_task
 
 
 @celery.task(base=BaseTaskWithRetry)
+@log_task("process_document")
 def process_document(original_local_file: str):
     """
     Process a document file and trigger appropriate text extraction.
@@ -28,12 +29,15 @@ def process_document(original_local_file: str):
          - Check for embedded text. If present, run local GPT extraction
          - Otherwise, queue Textract-based OCR
     """
+    task_id = process_document.request.id
+    task_logger(f"Processing {original_local_file}", step_name="process_document", task_id=task_id, file_path=original_local_file)
 
     if not os.path.exists(original_local_file):
-        print(f"[ERROR] File {original_local_file} not found.")
+        task_logger(f"File {original_local_file} not found.", level="error", step_name="process_document", task_id=task_id)
         return {"error": "File not found"}
 
     # 0. Compute the file hash and check for duplicates
+    task_logger(f"Computing hash for {original_local_file}", step_name="compute_hash", task_id=task_id)
     filehash = hash_file(original_local_file)
     original_filename = os.path.basename(original_local_file)
     file_size = os.path.getsize(original_local_file)
@@ -43,16 +47,19 @@ def process_document(original_local_file: str):
 
     # Acquire DB session in the task
     with SessionLocal() as db:
-        existing = db.query(FileRecord).filter_by(filehash=filehash).one_or_none()
+        # Keep all FileRecord operations within this session scope
-        if existing:
+        task_logger(f"Checking for duplicate files", step_name="check_duplicates", task_id=task_id)
-            print(f"[INFO] Duplicate file detected (hash={filehash[:10]}...) Skipping processing.")
+        existing_record = db.query(FileRecord).filter(FileRecord.filehash == filehash).one_or_none()
+        if existing_record:
+            task_logger(f"Duplicate file detected (hash={filehash[:10]}...). Skipping processing.",
+                        step_name="process_document", task_id=task_id, file_id=existing_record.id, status="success")
             return {
                 "status": "duplicate_file",
-                "file_id": existing.id,
+                "file_id": existing_record.id,
                 "detail": "File already processed."
             }
-
+        else:
-        # Not a duplicate -> insert a new record
+            task_logger(f"Creating file record for {original_local_file}", step_name="create_file_record", task_id=task_id)
             new_record = FileRecord(
                 filehash=filehash,
                 original_filename=original_filename,
@@ -65,6 +72,7 @@ def process_document(original_local_file: str):
             db.refresh(new_record)
 
             # 1. Generate a UUID-based filename and place it in /workdir/tmp
+            task_logger(f"Copying to workdir", step_name="copy_to_workdir", task_id=task_id, file_id=new_record.id)
             file_ext = os.path.splitext(original_local_file)[1]
             file_uuid = str(uuid.uuid4())
             new_filename = f"{file_uuid}{file_ext}"
@@ -80,25 +88,39 @@ def process_document(original_local_file: str):
             new_record.local_filename = new_local_path
             db.commit()
 
+        # Perform all further interactions with existing_record/new_record here
+
     # 2. Check for embedded text (outside the DB session to avoid long open transactions)
+    task_logger(f"Checking for embedded text", step_name="check_embedded_text", task_id=task_id, file_id=new_record.id)
     pdf_doc = fitz.open(new_local_path)
     has_text = any(page.get_text() for page in pdf_doc)
     pdf_doc.close()
 
     if has_text:
-        print(f"[INFO] PDF {original_local_file} contains embedded text. Processing locally.")
+        task_logger(f"PDF {original_local_file} contains embedded text. Processing locally.",
+                    step_name="process_document", task_id=task_id, file_id=new_record.id)
 
         # Extract text locally
         extracted_text = ""
+        task_logger(f"Extracting text locally", step_name="extract_text_locally", task_id=task_id, file_id=new_record.id)
         pdf_doc = fitz.open(new_local_path)
         for page in pdf_doc:
             extracted_text += page.get_text("text") + "\n"
         pdf_doc.close()
 
         # Call metadata extraction directly
-        extract_metadata_with_gpt.delay(new_filename, extracted_text)
+        task_logger(f"Text extracted locally. Queuing for metadata extraction.",
-        return {"file": new_local_path, "status": "Text extracted locally"}
+                    step_name="process_document", task_id=task_id, file_id=new_record.id, status="success")
+        metadata_task = extract_metadata_with_gpt.delay(new_filename, extracted_text)
+        task_logger(f"Triggered metadata extraction task: {metadata_task.id}", 
+                   step_name="process_document", task_id=task_id)
+        
+        return {"file": new_local_path, "status": "Text extracted locally", "file_id": new_record.id}
 
     # 3. If no embedded text, queue Textract processing
-    process_with_textract.delay(new_filename)
+    task_logger(f"No embedded text found. Queuing for OCR.",
-    return {"file": new_local_path, "status": "Queued for OCR"}
+                step_name="process_document", task_id=task_id, file_id=new_record.id, status="success")
+    ocr_task = process_with_textract.delay(new_filename)
+    task_logger(f"Triggered OCR task: {ocr_task.id}", step_name="process_document", task_id=task_id)
+    
+    return {"file": new_local_path, "status": "Queued for OCR", "file_id": new_record.id}

app/tasks/process_with_textract.py

@@ -8,6 +8,9 @@ from app.config import settings
 from app.tasks.retry_config import BaseTaskWithRetry
 from app.tasks.extract_metadata_with_gpt import extract_metadata_with_gpt
 from app.celery_app import celery
+from app.utils import task_logger, log_task
+from app.database import SessionLocal
+from app.models import FileRecord
 
 logger = logging.getLogger(__name__)
 
@@ -18,6 +21,7 @@ document_intelligence_client = DocumentIntelligenceClient(
 )
 
 @celery.task(base=BaseTaskWithRetry)
+@log_task("process_with_textract")
 def process_with_textract(s3_filename: str):
     """
     Processes a PDF document using Azure Document Intelligence and overlays OCR text onto
@@ -30,12 +34,31 @@ def process_with_textract(s3_filename: str):
       4. Extracts the text content for metadata processing.
       5. Triggers downstream metadata extraction by calling extract_metadata_with_gpt.
     """
-    try:
+    task_id = process_with_textract.request.id
     tmp_file_path = os.path.join(settings.workdir, "tmp", s3_filename)
+    
+    # Get the file_id from the database
+    file_id = None
+    with SessionLocal() as db:
+        file_record = db.query(FileRecord).filter(
+            FileRecord.local_filename == tmp_file_path
+        ).first()
+        if file_record:
+            file_id = file_record.id
+    
+    task_logger(f"Starting OCR for {s3_filename}", step_name="process_with_textract", 
+               task_id=task_id, file_id=file_id, file_path=tmp_file_path)
+    
     if not os.path.exists(tmp_file_path):
+        task_logger(f"Local file not found: {tmp_file_path}", level="error", 
+                  step_name="process_with_textract", task_id=task_id, 
+                  file_id=file_id, file_path=tmp_file_path)
         raise FileNotFoundError(f"Local file not found: {tmp_file_path}")
 
-        logger.info(f"Processing {s3_filename} with Azure Document Intelligence OCR.")
+    try:
+        task_logger(f"Sending document to Azure Document Intelligence", 
+                  step_name="azure_document_intelligence", task_id=task_id, 
+                  file_id=file_id, file_path=tmp_file_path)
         
         # Open and send the document for processing
         with open(tmp_file_path, "rb") as f:
@@ -45,23 +68,34 @@ def process_with_textract(s3_filename: str):
         result: AnalyzeResult = poller.result()
         operation_id = poller.details["operation_id"]
 
+        task_logger(f"Azure Document Intelligence processing complete, operation ID: {operation_id}",
+                   step_name="azure_document_intelligence", task_id=task_id)
+
         # Retrieve the processed searchable PDF
+        task_logger(f"Retrieving searchable PDF", step_name="retrieve_pdf", task_id=task_id)
         response = document_intelligence_client.get_analyze_result_pdf(
             model_id=result.model_id, result_id=operation_id
         )
         searchable_pdf_path = tmp_file_path  # Overwrite the original PDF location
         with open(searchable_pdf_path, "wb") as writer:
             writer.writelines(response)
-        logger.info(f"Searchable PDF saved at: {searchable_pdf_path}")
         
         # Extract raw text content from the result
         extracted_text = result.content if result.content else ""
-        logger.info(f"Extracted text for {s3_filename}: {len(extracted_text)} characters")
+        text_length = len(extracted_text)
+        task_logger(f"Extracted {text_length} characters of text", 
+                   step_name="extract_text", task_id=task_id)
 
         # Trigger downstream metadata extraction
-        extract_metadata_with_gpt.delay(s3_filename, extracted_text)
+        task_logger(f"OCR completed. Queueing metadata extraction for {s3_filename}", 
+                   step_name="process_with_textract", task_id=task_id, status="success")
                    
-        return {"s3_file": s3_filename, "searchable_pdf": searchable_pdf_path, "cleaned_text": extracted_text}
+        metadata_task = extract_metadata_with_gpt.delay(s3_filename, extracted_text)
+        task_logger(f"Triggered metadata extraction task: {metadata_task.id}", 
+                   step_name="process_with_textract", task_id=task_id)
+
+        return {"file": s3_filename, "searchable_pdf": searchable_pdf_path, "text_length": text_length}
     except Exception as e:
-        logger.error(f"Error processing {s3_filename} with Azure Document Intelligence: {e}")
+        task_logger(f"Error processing with Azure Document Intelligence: {e}", 
+                  level="error", step_name="process_with_textract", task_id=task_id)
         raise

app/tasks/refine_text_with_gpt.py

@@ -3,6 +3,7 @@
 from app.config import settings
 import openai
 from app.tasks.retry_config import BaseTaskWithRetry
+from app.utils import task_logger, log_task
 
 # Import the shared Celery instance
 from app.celery_app import celery
@@ -14,8 +15,12 @@ client = openai.OpenAI(
 )
 
 @celery.task(base=BaseTaskWithRetry)
+@log_task("refine_text")
 def refine_text_with_gpt(s3_filename: str, raw_text: str):
     """Uses OpenAI to clean and refine OCR text."""
+    task_id = refine_text_with_gpt.request.id
+    task_logger(f"Starting text refinement for {s3_filename}", step_name="refine_text", task_id=task_id)
+    
     response = client.chat.completions.create(
         model=settings.openai_model,
         messages=[
@@ -25,10 +30,12 @@ def refine_text_with_gpt(s3_filename: str, raw_text: str):
     )
     
     cleaned_text = response.choices[0].message.content
+    task_logger(f"Text refinement completed for {s3_filename}", step_name="refine_text", task_id=task_id)
 
     # Trigger next task (import locally if needed to avoid circular imports)
     from app.tasks.extract_metadata_with_gpt import extract_metadata_with_gpt
-    extract_metadata_with_gpt.delay(s3_filename, cleaned_text)
+    metadata_task = extract_metadata_with_gpt.delay(s3_filename, cleaned_text)
+    task_logger(f"Triggered metadata extraction task: {metadata_task.id}", step_name="refine_text", task_id=task_id)
 
-    return {"s3_file": s3_filename, "cleaned_text": cleaned_text}
+    return {"file": s3_filename, "cleaned_text": cleaned_text}
 

app/tasks/send_to_all.py

@@ -4,18 +4,31 @@ from app.celery_app import celery
 from app.tasks.upload_to_dropbox import upload_to_dropbox
 from app.tasks.upload_to_nextcloud import upload_to_nextcloud
 from app.tasks.upload_to_paperless import upload_to_paperless
+from app.utils import task_logger, log_task
 
 @celery.task
+@log_task("send_to_all_destinations")
 def send_to_all_destinations(file_path: str):
     """
     Fires off tasks to upload a single file to Dropbox, Nextcloud, and Paperless.
     These tasks run in parallel (Celery returns immediately from each .delay()).
     """
-    upload_to_dropbox.delay(file_path)
+    task_logger(f"Sending {file_path} to all destinations", step_name="send_to_all")
-    upload_to_nextcloud.delay(file_path)
+    
-    upload_to_paperless.delay(file_path)
+    dropbox_task = upload_to_dropbox.delay(file_path)
+    nextcloud_task = upload_to_nextcloud.delay(file_path)
+    paperless_task = upload_to_paperless.delay(file_path)
+
+    task_logger(f"Enqueued file for all destinations: Dropbox (task: {dropbox_task.id}), "
+               f"Nextcloud (task: {nextcloud_task.id}), Paperless (task: {paperless_task.id})",
+               step_name="send_to_all", status="success")
 
     return {
         "status": "All upload tasks enqueued",
-        "file_path": file_path
+        "file_path": file_path,
+        "task_ids": {
+            "dropbox": dropbox_task.id,
+            "nextcloud": nextcloud_task.id, 
+            "paperless": paperless_task.id
+        }
     }

app/tasks/upload_to_dropbox.py

@@ -6,6 +6,7 @@ import dropbox
 from app.config import settings
 from app.tasks.retry_config import BaseTaskWithRetry
 from app.celery_app import celery
+from app.utils import task_logger, log_task
 
 def get_dropbox_access_token():
     """Refresh the Dropbox access token using the stored refresh token from ENV."""
@@ -25,14 +26,16 @@ def get_dropbox_access_token():
         return response.json()["access_token"]
     else:
         error_msg = f"Failed to refresh Dropbox token: {response.status_code} - {response.text}"
-        print(f"[ERROR] {error_msg}")
+        task_logger(error_msg, level="error", step_name="dropbox_auth")
         raise Exception(error_msg)
 
 @celery.task(base=BaseTaskWithRetry)
+@log_task("upload_to_dropbox")
 def upload_to_dropbox(file_path: str):
     """Uploads a file to Dropbox using the API."""
 
     if not os.path.exists(file_path):
+        task_logger(f"File not found: {file_path}", level="error", step_name="dropbox_upload")
         raise FileNotFoundError(f"File not found: {file_path}")
 
     # Extract filename and set target path
@@ -41,16 +44,20 @@ def upload_to_dropbox(file_path: str):
 
     try:
         # Get fresh access token
+        task_logger(f"Getting Dropbox access token", step_name="dropbox_auth")
         access_token = get_dropbox_access_token()
         dbx = dropbox.Dropbox(access_token)
 
         file_size = os.path.getsize(file_path)
         chunk_size = 4 * 1024 * 1024  # 4MB chunk size
 
+        task_logger(f"Starting upload of {filename} ({file_size} bytes) to Dropbox", step_name="dropbox_upload")
+        
         with open(file_path, "rb") as file_data:
             if file_size <= chunk_size:
                 dbx.files_upload(file_data.read(), dropbox_path)
             else:
+                task_logger(f"Using chunked upload for {filename}", step_name="dropbox_upload")
                 upload_session_start_result = dbx.files_upload_session_start(file_data.read(chunk_size))
                 cursor = dropbox.files.UploadSessionCursor(
                     session_id=upload_session_start_result.session_id,
@@ -65,10 +72,10 @@ def upload_to_dropbox(file_path: str):
                         dbx.files_upload_session_append_v2(file_data.read(chunk_size), cursor)
                         cursor.offset = file_data.tell()
 
-        print(f"[INFO] Successfully uploaded {filename} to Dropbox at {dropbox_path}.")
+        task_logger(f"Successfully uploaded {filename} to Dropbox at {dropbox_path}", step_name="dropbox_upload", status="success")
         return {"status": "Completed", "file": file_path}
 
     except Exception as e:
-        error_msg = f"[ERROR] Failed to upload {filename} to Dropbox: {str(e)}"
+        error_msg = f"Failed to upload {filename} to Dropbox: {str(e)}"
-        print(error_msg)
+        task_logger(error_msg, level="error", step_name="dropbox_upload", status="failure")
         raise Exception(error_msg)

app/tasks/upload_to_nextcloud.py

@@ -5,12 +5,15 @@ import requests
 from app.config import settings
 from app.tasks.retry_config import BaseTaskWithRetry
 from app.celery_app import celery
+from app.utils import task_logger, log_task
 
 @celery.task(base=BaseTaskWithRetry)
+@log_task("upload_to_nextcloud")
 def upload_to_nextcloud(file_path: str):
     """Uploads a file to Nextcloud in the configured folder."""
 
     if not os.path.exists(file_path):
+        task_logger(f"File not found: {file_path}", level="error", step_name="nextcloud_upload")
         raise FileNotFoundError(f"File not found: {file_path}")
 
     # Extract filename
@@ -19,6 +22,8 @@ def upload_to_nextcloud(file_path: str):
     # Construct the full upload URL
     nextcloud_url = f"{settings.nextcloud_upload_url}/{settings.nextcloud_folder}/{filename}"
     
+    task_logger(f"Starting upload of {filename} to Nextcloud", step_name="nextcloud_upload")
+
     # Read file content
     with open(file_path, "rb") as file_data:
         response = requests.put(
@@ -29,9 +34,10 @@ def upload_to_nextcloud(file_path: str):
 
     # Check if upload was successful
     if response.status_code in (200, 201):
-        print(f"[INFO] Successfully uploaded {filename} to Nextcloud at {nextcloud_url}.")
+        task_logger(f"Successfully uploaded {filename} to Nextcloud at {nextcloud_url}", 
+                   step_name="nextcloud_upload", status="success")
         return {"status": "Completed", "file": file_path}
     else:
-        error_msg = f"[ERROR] Failed to upload {filename} to Nextcloud: {response.status_code} - {response.text}"
+        error_msg = f"Failed to upload {filename} to Nextcloud: {response.status_code} - {response.text}"
-        print(error_msg)
+        task_logger(error_msg, level="error", step_name="nextcloud_upload", status="failure")
         raise Exception(error_msg)

app/tasks/upload_to_paperless.py

@@ -10,6 +10,7 @@ from typing import Dict, Any
 from app.config import settings
 from app.tasks.retry_config import BaseTaskWithRetry
 from app.celery_app import celery
+from app.utils import task_logger, log_task
 
 logger = logging.getLogger(__name__)
 
@@ -46,13 +47,15 @@ def poll_task_for_document_id(task_id: str) -> int:
 
     while attempts < POLL_MAX_ATTEMPTS:
         try:
+            task_logger(f"Polling Paperless for task {task_id}, attempt {attempts+1}/{POLL_MAX_ATTEMPTS}", 
+                      step_name="paperless_poll")
             resp = requests.get(url, headers=_get_headers(), params={"task_id": task_id})
             resp.raise_for_status()
             tasks_data = resp.json()
         except requests.exceptions.RequestException as exc:
-            logger.warning(
+            task_logger(
-                "Failed to poll for task_id='%s'. Attempt=%d Error=%s",
+                f"Failed to poll for task_id='{task_id}'. Attempt={attempts + 1}/{POLL_MAX_ATTEMPTS} Error={exc}",
-                task_id, attempts + 1, exc
+                level="warning", step_name="paperless_poll"
             )
             time.sleep(POLL_INTERVAL_SEC)
             attempts += 1
@@ -67,21 +70,29 @@ def poll_task_for_document_id(task_id: str) -> int:
             if status == "SUCCESS":
                 doc_str = task_info.get("related_document")
                 if doc_str:
+                    task_logger(f"Task {task_id} completed successfully with document ID: {doc_str}", 
+                              step_name="paperless_poll", status="success")
                     return int(doc_str)
                 raise RuntimeError(
                     f"Task {task_id} completed but no doc ID found. Task info: {task_info}"
                 )
             elif status == "FAILURE":
-                raise RuntimeError(f"Task {task_id} failed: {task_info.get('result')}")
+                error_msg = f"Task {task_id} failed: {task_info.get('result')}"
+                task_logger(error_msg, level="error", step_name="paperless_poll", status="failure")
+                raise RuntimeError(error_msg)
+            else:
+                task_logger(f"Task {task_id} status: {status}, waiting {POLL_INTERVAL_SEC}s", 
+                          step_name="paperless_poll")
 
         attempts += 1
         time.sleep(POLL_INTERVAL_SEC)
 
-    raise TimeoutError(
+    timeout_msg = f"Task {task_id} didn't reach SUCCESS within {POLL_MAX_ATTEMPTS} attempts."
-        f"Task {task_id} didn't reach SUCCESS within {POLL_MAX_ATTEMPTS} attempts."
+    task_logger(timeout_msg, level="error", step_name="paperless_poll", status="failure")
-    )
+    raise TimeoutError(timeout_msg)
 
 @celery.task(base=BaseTaskWithRetry)
+@log_task("upload_to_paperless")
 def upload_to_paperless(file_path: str) -> Dict[str, Any]:
     """
     Uploads a PDF to Paperless with minimal metadata (filename and date only).
@@ -93,9 +104,11 @@ def upload_to_paperless(file_path: str) -> Dict[str, Any]:
     Returns a dict with status, the paperless_task_id, paperless_document_id, and file_path.
     """
     if not os.path.exists(file_path):
+        task_logger(f"File not found: {file_path}", level="error", step_name="paperless_upload")
         raise FileNotFoundError(f"File not found: {file_path}")
 
     base_name = os.path.basename(file_path)
+    task_logger(f"Starting upload of {base_name} to Paperless", step_name="paperless_upload")
 
     # Upload the PDF
     post_url = _paperless_api_url("/api/documents/post_document/")
@@ -106,22 +119,21 @@ def upload_to_paperless(file_path: str) -> Dict[str, Any]:
         data = {"title": base_name}  # Title = Filename (no additional metadata)
 
         try:
-            logger.debug("Posting document to Paperless: file=%s", base_name)
+            task_logger(f"Posting document to Paperless: file={base_name}", step_name="paperless_upload")
             resp = requests.post(post_url, headers=_get_headers(), files=files, data=data)
             resp.raise_for_status()
         except requests.exceptions.RequestException as exc:
-            logger.error(
+            error_msg = f"Failed to upload document '{file_path}' to Paperless. Error: {exc}. Response={getattr(exc.response, 'text', '<no response>')}"
-                "Failed to upload document '%s' to Paperless. Error: %s. Response=%s",
+            task_logger(error_msg, level="error", step_name="paperless_upload", status="failure")
-                file_path, exc, getattr(exc.response, "text", "<no response>")
-            )
             raise
 
         raw_task_id = resp.text.strip().strip('"').strip("'")
-        logger.info(f"Received Paperless task ID: {raw_task_id}")
+        task_logger(f"Received Paperless task ID: {raw_task_id}", step_name="paperless_upload")
 
     # Poll tasks until success/fail => get doc_id
     doc_id = poll_task_for_document_id(raw_task_id)
-    logger.info(f"Document {file_path} successfully ingested => ID={doc_id}")
+    task_logger(f"Document {file_path} successfully ingested => ID={doc_id}", 
+              step_name="paperless_upload", status="success")
 
     return {
         "status": "Completed",

app/utils.py

@@ -1,7 +1,14 @@
 # app/utils.py
 import hashlib
+import logging
+import contextlib
+from functools import wraps
+from typing import Optional, Callable
+from celery import Task
 from app.database import SessionLocal
-from app.models import ProcessingLog
+from app.models import ProcessingLog, FileRecord
+
+logger = logging.getLogger(__name__)
 
 def hash_file(filepath, chunk_size=65536):
     """
@@ -18,12 +25,29 @@ def hash_file(filepath, chunk_size=65536):
     return sha256.hexdigest()
 
 
-
+def log_task_progress(task_id: str, step_name: str, status: str, message: Optional[str] = None, 
-def log_task_progress(task_id, step_name, status, message=None, file_id=None):
+                     file_id: Optional[int] = None, file_path: Optional[str] = None):
     """
     Logs the progress of a Celery task to the database.
+    
+    Parameters:
+        task_id (str): The Celery task ID
+        step_name (str): Name of the processing step
+        status (str): Status of the step ("pending", "in_progress", "success", "failure")
+        message (str, optional): Additional message or error details
+        file_id (int, optional): ID of associated FileRecord
+        file_path (str, optional): Path to file - will attempt to find file_id from path
     """
+    try:
         with SessionLocal() as db:
+            # If file_path is provided but not file_id, try to look up the file_id
+            if not file_id and file_path:
+                file_record = db.query(FileRecord).filter(
+                    FileRecord.local_filename == file_path
+                ).first()
+                if file_record:
+                    file_id = file_record.id
+                    
             log_entry = ProcessingLog(
                 task_id=task_id,
                 step_name=step_name,
@@ -33,3 +57,121 @@ def log_task_progress(task_id, step_name, status, message=None, file_id=None):
             )
             db.add(log_entry)
             db.commit()
+            logger.info(f"Task {task_id} - {step_name}: {status} {message or ''}")
+            return log_entry.id
+    except Exception as e:
+        logger.error(f"Failed to log task progress: {e}")
+        return None
+
+
+@contextlib.contextmanager
+def task_step_logging(task_id: str, step_name: str, file_id: Optional[int] = None, file_path: Optional[str] = None):
+    """
+    Context manager for logging the beginning and end of a task step.
+    
+    Example:
+        with task_step_logging(task.request.id, "extract_text", file_path=pdf_path):
+            # Do the actual work
+            text = extract_text_from_pdf(pdf_path)
+    """
+    log_id = log_task_progress(task_id, step_name, "in_progress", 
+                              "Starting processing step", file_id, file_path)
+    try:
+        yield
+        log_task_progress(task_id, step_name, "success", 
+                         "Successfully completed", file_id, file_path)
+    except Exception as e:
+        log_task_progress(task_id, step_name, "failure", 
+                         f"Error: {str(e)}", file_id, file_path)
+        raise  # Re-raise the exception after logging
+
+
+def log_task(step_name: str):
+    """
+    Decorator for Celery tasks to automatically log progress.
+    
+    Example:
+        @celery.task
+        @log_task("process_pdf")
+        def process_pdf(file_path):
+            # Task implementation
+    """
+    def decorator(func: Callable):
+        @wraps(func)
+        def wrapper(*args, **kwargs):
+            # Get task_id from Celery's current task
+            task = wrapper.request if hasattr(wrapper, 'request') else None
+            task_id = task.id if task else "unknown_task"
+            
+            # Try to determine file_id or file_path from arguments
+            file_path = None
+            if args and isinstance(args[0], str):
+                file_path = args[0]  # Assume first arg is file path
+                
+            # Log start
+            log_task_progress(task_id, step_name, "pending", "Task queued", file_path=file_path)
+            
+            try:
+                # Log in_progress
+                log_task_progress(task_id, step_name, "in_progress", "Task started", file_path=file_path)
+                
+                # Execute the task
+                result = func(*args, **kwargs)
+                
+                # Log success
+                log_task_progress(task_id, step_name, "success", "Task completed", file_path=file_path)
+                
+                return result
+            except Exception as e:
+                # Log failure
+                log_task_progress(task_id, step_name, "failure", f"Error: {str(e)}", file_path=file_path)
+                raise  # Re-raise the exception
+                
+        return wrapper
+    return decorator
+
+
+def task_logger(message: str, level: str = "info", task_id: str = None, step_name: str = None, 
+               status: str = None, file_path: Optional[str] = None, file_id: Optional[int] = None):
+    """
+    Unified logging function that logs to both console and database.
+    This replaces print() statements in tasks with proper logging.
+    
+    Parameters:
+        message: The log message
+        level: Log level (info, error, warning, debug)
+        task_id: Celery task ID (tries to get from current task if None)
+        step_name: Name of the processing step
+        status: Status for database logging (pending, in_progress, success, failure)
+        file_path: Path to the file being processed
+        file_id: ID of the FileRecord
+    
+    Usage:
+        task_logger("Processing file", task_id=task.request.id, step_name="process_pdf")
+        task_logger("Error processing file", level="error") 
+    """
+    # Get task_id from current task if not provided
+    if task_id is None:
+        from celery._state import get_current_task
+        current_task = get_current_task()
+        task_id = current_task.request.id if current_task else "unknown_task"
+    
+    # Default step name if not provided
+    if step_name is None:
+        step_name = "general"
+    
+    # Default status if not provided
+    if status is None:
+        if level == "error":
+            status = "failure"
+        elif level == "warning":
+            status = "warning"
+        else:
+            status = "in_progress"
+    
+    # Log to console
+    log_method = getattr(logger, level.lower(), logger.info)
+    log_method(f"[{step_name}] {message}")
+    
+    # Log to database
+    return log_task_progress(task_id, step_name, status, message, file_id, file_path)

migrate_db.py

@@ -0,0 +1,23 @@
+#!/usr/bin/env python3
+
+"""
+Script to run database migrations manually.
+Run this script to update the database schema before starting the application.
+
+Usage:
+  python migrate_db.py
+"""
+
+import logging
+from app.db_migration import run_migrations
+
+if __name__ == "__main__":
+    # Configure logging
+    logging.basicConfig(
+        level=logging.INFO,
+        format="%(asctime)s - %(name)s - %(levelname)s - %(message)s"
+    )
+    
+    print("Running database migrations...")
+    run_migrations()
+    print("Database migrations completed.")