Improve calendar display stability and data handling

Add robust error handling and data validation to the calendar component and API routes to prevent production crashes, specifically addressing issues with invalid publicity data and ensuring array types for fetched data.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: b163d4c0-de5e-4f4e-a9c0-aed4c7049718
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/1957c339-2757-4d1f-8e92-e9f71a1ce58e/b163d4c0-de5e-4f4e-a9c0-aed4c7049718/FL119j1

client/src/components/CalendarGrid.tsx

@@ -171,6 +171,14 @@ export default function CalendarGrid({
   onDateClick,
   onItemClick,
 }: CalendarGridProps) {
+  console.log('🗓️ CalendarGrid rendered with:', {
+    currentDate: currentDate?.toISOString(),
+    ordersCount: orders?.length || 0,
+    deliveriesCount: deliveries?.length || 0,
+    publicitiesCount: publicities?.length || 0,
+    selectedStoreId,
+    userGroupsCount: userGroups?.length || 0
+  });
   const monthStart = startOfMonth(currentDate);
   const monthEnd = endOfMonth(currentDate);
 
@@ -178,29 +186,42 @@ export default function CalendarGrid({
   const getPublicitiesForDate = (date: Date) => {
     const dateStr = format(date, 'yyyy-MM-dd');
     
+    // Protection contre les données invalides qui causent des plantages en production
+    if (!publicities || !Array.isArray(publicities)) {
+      console.warn('⚠️ Invalid publicities data:', publicities);
+      return [];
+    }
+    
     console.log('🔍 CalendarGrid getPublicitiesForDate:', {
       date: dateStr,
       totalPublicities: publicities.length,
       selectedStoreId,
-      userGroups: userGroups.length
+      userGroups: userGroups?.length || 0
     });
     
-    if (publicities.length > 0) {
-      console.log('📄 Sample publicity structure:', publicities[0]);
-    }
-    
-    return publicities.filter(pub => {
+    try {
+      return publicities.filter(pub => {
+        // Vérifications de sécurité pour éviter les plantages
+        if (!pub || typeof pub !== 'object') {
+          console.warn('⚠️ Invalid publicity object:', pub);
+          return false;
+        }
       // Check if the date is within the publicity period
       const pubStart = pub.startDate;
       const pubEnd = pub.endDate;
       
+      if (!pubStart || !pubEnd) {
+        console.warn('⚠️ Publicity missing dates:', { pubNumber: pub.pubNumber, startDate: pubStart, endDate: pubEnd });
+        return false;
+      }
+      
       if (dateStr < pubStart || dateStr > pubEnd) {
         return false;
       }
 
       // If no store is selected and user has no assigned groups, show only publicities with participations
       if (!selectedStoreId && (!userGroups || userGroups.length === 0)) {
-        const hasParticipations = pub.participations && pub.participations.length > 0;
+        const hasParticipations = pub.participations && Array.isArray(pub.participations) && pub.participations.length > 0;
         if (hasParticipations) {
           console.log('📋 Publicity has participations (no store selected):', { pubNumber: pub.pubNumber, participationCount: pub.participations.length });
         }
@@ -209,7 +230,8 @@ export default function CalendarGrid({
 
       // If a specific store is selected, check if that store participates
       if (selectedStoreId) {
-        const matches = pub.participations?.some((pg: any) => pg.groupId === selectedStoreId);
+        const matches = pub.participations && Array.isArray(pub.participations) && 
+                       pub.participations.some((pg: any) => pg?.groupId === selectedStoreId);
         if (matches) {
           console.log('🎯 Publicity matches selected store:', { pubNumber: pub.pubNumber, selectedStoreId });
         }
@@ -218,9 +240,10 @@ export default function CalendarGrid({
 
       // If no specific store selected but user has assigned stores, 
       // show publicities where any of user's stores participate
-      if (userGroups && userGroups.length > 0) {
-        const userGroupIds = userGroups.map((ug: any) => ug.groupId);
-        const matches = pub.participations?.some((pg: any) => userGroupIds.includes(pg.groupId));
+      if (userGroups && Array.isArray(userGroups) && userGroups.length > 0) {
+        const userGroupIds = userGroups.map((ug: any) => ug?.groupId).filter(id => id !== undefined);
+        const matches = pub.participations && Array.isArray(pub.participations) &&
+                       pub.participations.some((pg: any) => pg?.groupId && userGroupIds.includes(pg.groupId));
         if (matches) {
           console.log('👥 Publicity matches user groups:', { pubNumber: pub.pubNumber, userGroupIds });
         }
@@ -228,12 +251,16 @@ export default function CalendarGrid({
       }
 
       // Default case: only show publicities with participations
-      const hasParticipations = pub.participations && pub.participations.length > 0;
+      const hasParticipations = pub.participations && Array.isArray(pub.participations) && pub.participations.length > 0;
       if (hasParticipations) {
         console.log('📋 Publicity has participations (default case):', { pubNumber: pub.pubNumber, participationCount: pub.participations.length });
       }
       return hasParticipations;
-    });
+      });
+    } catch (error) {
+      console.error('❌ Error filtering publicities:', error);
+      return [];
+    }
   };
 
   // Get all days in the month