fix: use Page Access Token and fix deprecated Graph API fields

- Use config.access_token (Page Token) instead of User Token for feed/insights
- Remove deprecated 'type' field from feed, use attachments{media_type}
- Fetch insights individually to handle unavailable metrics gracefully

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

facebook_graph_service.py

@@ -64,7 +64,7 @@ class FacebookGraphService:
         since_365d = int((now - timedelta(days=365)).timestamp())
 
         data = self._get(f'{page_id}/feed', {
-            'fields': 'created_time,message,type,shares,likes.summary(true),comments.summary(true)',
+            'fields': 'created_time,message,shares,likes.summary(true),comments.summary(true),attachments{media_type}',
             'since': since_365d,
             'limit': 100,
         })
@@ -98,8 +98,9 @@ class FacebookGraphService:
             result['total_comments'] += comments
             result['total_shares'] += shares
 
-            # Post types
-            ptype = post.get('type', 'status')
+            # Post types (from attachments.media_type since 'type' is deprecated)
+            attachments = post.get('attachments', {}).get('data', [])
+            ptype = attachments[0].get('media_type', 'status') if attachments else 'status'
             result['post_types'][ptype] = result['post_types'].get(ptype, 0) + 1
 
             # Recent posts (top 5 by date)
@@ -118,32 +119,42 @@ class FacebookGraphService:
         return result
 
     def get_page_insights(self, page_id: str, days: int = 28) -> Dict:
-        """Get page insights (impressions, engaged users, reactions).
+        """Get page insights (views, engagements, reactions).
 
-        Note: Requires page access token, not user access token.
-        The page token should be stored during OAuth connection.
+        Fetches metrics individually to handle deprecated/unavailable ones gracefully.
+        Requires page access token, not user access token.
         """
-        since = datetime.now() - timedelta(days=days)
-        until = datetime.now()
+        since = int((datetime.now() - timedelta(days=days)).timestamp())
+        until = int(datetime.now().timestamp())
 
-        metrics = 'page_impressions,page_engaged_users,page_fans,page_views_total,page_post_engagements,page_fan_adds,page_fan_removes,page_actions_post_reactions_total'
-        data = self._get(f'{page_id}/insights', {
-            'metric': metrics,
-            'period': 'day',
-            'since': int(since.timestamp()),
-            'until': int(until.timestamp()),
-        })
-
-        if not data:
-            return {}
+        all_metrics = [
+            'page_views_total',
+            'page_post_engagements',
+            'page_actions_post_reactions_total',
+            # These may be deprecated or require additional permissions:
+            'page_impressions',
+            'page_engaged_users',
+            'page_fans',
+            'page_fan_adds',
+            'page_fan_removes',
+        ]
 
         result = {}
-        for metric in data.get('data', []):
-            name = metric.get('name', '')
-            values = metric.get('values', [])
-            if values:
-                total = sum(v.get('value', 0) for v in values if isinstance(v.get('value'), (int, float)))
-                result[name] = total
+        for metric_name in all_metrics:
+            data = self._get(f'{page_id}/insights', {
+                'metric': metric_name,
+                'period': 'day',
+                'since': since,
+                'until': until,
+            })
+            if not data:
+                continue
+            for metric in data.get('data', []):
+                name = metric.get('name', '')
+                values = metric.get('values', [])
+                if values:
+                    total = sum(v.get('value', 0) for v in values if isinstance(v.get('value'), (int, float)))
+                    result[name] = total
 
         return result
 
@@ -455,13 +466,7 @@ def sync_facebook_to_social_media(db, company_id: int) -> dict:
     from oauth_service import OAuthService
     from database import SocialMediaConfig, CompanySocialMedia
 
-    # 1. Get valid page access token
-    oauth = OAuthService()
-    token = oauth.get_valid_token(db, company_id, 'meta', 'facebook')
-    if not token:
-        return {'success': False, 'error': 'no_token', 'message': 'Brak aktywnego tokenu Facebook'}
-
-    # 2. Get page_id from SocialMediaConfig
+    # 1. Get page config
     config = db.query(SocialMediaConfig).filter(
         SocialMediaConfig.platform == 'facebook',
         SocialMediaConfig.company_id == company_id,
@@ -473,6 +478,15 @@ def sync_facebook_to_social_media(db, company_id: int) -> dict:
 
     page_id = config.page_id
 
+    # 2. Use Page Access Token (from config) — required for feed/insights.
+    #    Fall back to User Access Token from OAuth if page token unavailable.
+    token = config.access_token
+    if not token:
+        oauth = OAuthService()
+        token = oauth.get_valid_token(db, company_id, 'meta', 'facebook')
+    if not token:
+        return {'success': False, 'error': 'no_token', 'message': 'Brak aktywnego tokenu Facebook'}
+
     # 3. Fetch page info from Graph API
     fb = FacebookGraphService(token)
     page_info = fb.get_page_info(page_id)