corrected time record type, mismatch caused issues and kept credential verification from occuring

backend/app/api/credentials.py

@@ -1,12 +1,12 @@
 """Credential management API endpoints."""
 
-from datetime import datetime
 from quart import Blueprint, request, jsonify, current_app
 from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.models.credential import Credential, CredentialType
 from app.models.setting import Setting, EXTENSION_API_KEY_SETTING, generate_api_key
+from app.models.base import utcnow
 from app.config import get_settings
 from app.utils.encryption import encrypt_data, decrypt_data
 
@@ -176,7 +176,7 @@ async def verify_credentials():
 
         # TODO: Implement actual verification by making test request
         # For now, just mark as verified
-        verified_at = datetime.utcnow()
+        verified_at = utcnow()
         credential.last_verified = verified_at
         await session.commit()
 

backend/app/api/downloads.py

@@ -1,11 +1,11 @@
 """Download history API endpoints."""
 
-from datetime import datetime
 from quart import Blueprint, request, jsonify, current_app
 from sqlalchemy import select, func, and_
 from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy.orm import selectinload
 
+from app.models.base import utcnow
 from app.models.download import Download, DownloadStatus
 from app.models.source import Source
 from app.tasks.downloads import process_download
@@ -139,7 +139,7 @@ async def recent_activity():
     days = int(request.args.get("days", 7))
 
     from datetime import timedelta
-    cutoff = datetime.utcnow() - timedelta(days=days)
+    cutoff = utcnow() - timedelta(days=days)
 
     async with current_app.db_engine.connect() as conn:
         session = AsyncSession(bind=conn)

backend/app/models/base.py

@@ -11,8 +11,12 @@ class Base(DeclarativeBase):
 
 
 def utcnow():
-    """Return current UTC time as timezone-aware datetime."""
-    return datetime.now(timezone.utc)
+    """Return current UTC time as naive datetime (no tzinfo).
+
+    Uses naive datetimes because the database columns are
+    TIMESTAMP WITHOUT TIME ZONE. All datetimes are assumed UTC.
+    """
+    return datetime.now(timezone.utc).replace(tzinfo=None)
 
 
 def format_datetime(dt):

backend/app/tasks/downloads.py

@@ -11,6 +11,7 @@ from sqlalchemy.orm import selectinload
 
 from app.config import get_settings
 from app.tasks.celery_app import celery_app
+from app.models.base import utcnow
 from app.models.source import Source
 from app.models.subscription import Subscription
 from app.models.download import Download, DownloadStatus, ErrorType as DBErrorType
@@ -77,7 +78,7 @@ async def _download_source_async(source_id: int) -> dict:
                 source_id=source.id,
                 url=source.url,
                 status=DownloadStatus.RUNNING,
-                started_at=datetime.utcnow(),
+                started_at=utcnow(),
             )
             session.add(download)
             await session.commit()
@@ -123,7 +124,7 @@ async def _download_source_async(source_id: int) -> dict:
                 )
 
                 # Update download record
-                download.completed_at = datetime.utcnow()
+                download.completed_at = utcnow()
                 download.file_count = dl_result.files_downloaded
                 download.metadata_ = {
                     "stdout": dl_result.stdout[:10000] if dl_result.stdout else None,  # Truncate
@@ -133,7 +134,7 @@ async def _download_source_async(source_id: int) -> dict:
 
                 if dl_result.success:
                     download.status = DownloadStatus.COMPLETED
-                    source.last_success = datetime.utcnow()
+                    source.last_success = utcnow()
                     source.error_count = 0
                     logger.info(f"Download completed for {subscription_name}/{source.platform}: {dl_result.files_downloaded} files")
 
@@ -164,7 +165,7 @@ async def _download_source_async(source_id: int) -> dict:
                     })
 
                 # Update source last_check
-                source.last_check = datetime.utcnow()
+                source.last_check = utcnow()
                 await session.commit()
 
                 return {
@@ -183,9 +184,9 @@ async def _download_source_async(source_id: int) -> dict:
                 download.status = DownloadStatus.FAILED
                 download.error_type = DBErrorType.UNKNOWN_ERROR
                 download.error_message = str(e)
-                download.completed_at = datetime.utcnow()
+                download.completed_at = utcnow()
                 source.error_count = (source.error_count or 0) + 1
-                source.last_check = datetime.utcnow()
+                source.last_check = utcnow()
 
                 await session.commit()
 
@@ -219,7 +220,7 @@ async def _scheduled_check_async() -> dict:
 
     try:
         async with session_factory() as session:
-            now = datetime.utcnow()
+            now = utcnow()
 
             # Find sources due for checking:
             # - enabled = True
@@ -286,7 +287,7 @@ async def _cleanup_old_downloads_async() -> dict:
 
     try:
         async with session_factory() as session:
-            now = datetime.utcnow()
+            now = utcnow()
 
             # Delete completed downloads older than 30 days
             completed_cutoff = now - timedelta(days=30)