fix: final gemini performance tweaks (pre-calculate date + asyncio.gather)

Author: g0w6y

modules/github_fetcher.py

@@ -62,6 +62,7 @@ async def fetch_user_profile(username: str) -> dict:
                 raise ValueError(f"Invalid GitHub username: '{username}'")
 
             one_year_ago = (datetime.now() - timedelta(days=365)).isoformat() + 'Z'
+            one_year_ago_dt = datetime.now() - timedelta(days=365)   # pre-calculated for loops
 
             graphql_query = {
                 "query": f"""
@@ -112,11 +113,11 @@ async def fetch_user_profile(username: str) -> dict:
 
             pr_merged_last_year = sum(
                 1 for pr in graphql_data.get('pullRequests', {}).get('nodes', [])
-                if pr and datetime.strptime(pr['createdAt'], '%Y-%m-%dT%H:%M:%SZ') > datetime.now() - timedelta(days=365)
+                if pr and datetime.strptime(pr['createdAt'], '%Y-%m-%dT%H:%M:%SZ') > one_year_ago_dt
             )
             issues_closed_last_year = sum(
                 1 for issue in graphql_data.get('issues', {}).get('nodes', [])
-                if issue and datetime.strptime(issue['createdAt'], '%Y-%m-%dT%H:%M:%SZ') > datetime.now() - timedelta(days=365)
+                if issue and datetime.strptime(issue['createdAt'], '%Y-%m-%dT%H:%M:%SZ') > one_year_ago_dt
             )
 
             return {

utils/user.py

@@ -60,36 +60,36 @@ async def get_user_data(username: str, force: bool = True) -> dict:
         if res.status_code == 200:
             return res.json()
 
-    profile_data = await GitHubProfileFetcher.fetch_user_profile(username)
+    # Parallel fetch profile + contributions
+    profile_data, contributions_data = await asyncio.gather(
+        GitHubProfileFetcher.fetch_user_profile(username),
+        asyncio.to_thread(
+            GitHubContributionsFetcher.fetch_recent_contributions,
+            username,
+            Settings.CONTRIBUTION_DAYS
+        )
+    )
 
     # Early return if GitHub fetch failed
     if "error" in profile_data:
         return profile_data
 
-    contributions_data = await asyncio.to_thread(
-        GitHubContributionsFetcher.fetch_recent_contributions,
-        username,
-        Settings.CONTRIBUTION_DAYS
-    )
-
     ai_generator = AIDescriptionGenerator()
+
+    # Parallel AI summary generation
     try:
-        profile_summary = await asyncio.to_thread(
-            ai_generator.generate_profile_summary, profile_data
+        profile_summary, activity_summary = await asyncio.gather(
+            asyncio.to_thread(ai_generator.generate_profile_summary, profile_data),
+            asyncio.to_thread(ai_generator.generate_activity_summary, contributions_data) if contributions_data else None,
+            return_exceptions=True
         )
     except Exception as e:
-        logger.exception("Failed to generate profile summary for user %s", username)
+        logger.exception("Failed to generate AI summaries for user %s", username)
         profile_summary = None
+        activity_summary = None
 
     if contributions_data:
-        try:
-            activity_summary = await asyncio.to_thread(
-                ai_generator.generate_activity_summary, contributions_data
-            )
-            profile_data['activity_summary'] = activity_summary if activity_summary else {}
-        except Exception as e:
-            logger.exception("Failed to generate activity summary for user %s", username)
-            profile_data['activity_summary'] = {}
+        profile_data['activity_summary'] = activity_summary if activity_summary else {}
 
     profile_data['profile_summary'] = profile_summary
     return profile_data