feat(cache): implement centralized caching layer for improved performance and reduced API calls

feat(microsoft-integration): enhance inbox and events fetching with caching support
feat(auth): include theme and notification settings in user data retrieval
feat(profile): improve password visibility toggle functionality
feat(planner): optimize event synchronization with Outlook using caching
fix(notifications): update mail badge handling for mobile and desktop

includes/integrations/microsoft.php

@@ -6,6 +6,7 @@
 
 require_once __DIR__ . '/../http.php';
 require_once __DIR__ . '/../../config/database.php';
+require_once __DIR__ . '/../cache.php';
 
 const MS_OAUTH_AUTHORIZE_URL = 'https://login.microsoftonline.com/%s/oauth2/v2.0/authorize';
 const MS_OAUTH_TOKEN_URL     = 'https://login.microsoftonline.com/%s/oauth2/v2.0/token';
@@ -279,7 +280,15 @@ function microsoft_get_valid_token(int $userId, bool $forceRefresh = false): ?st
 /**
  * Haalt agenda-afspraken van Microsoft Outlook op voor een datumbereik (bijv. een hele week)
  */
-function microsoft_fetch_events_range(int $userId, string $startDate, string $endDate): array {
+function microsoft_fetch_events_range(int $userId, string $startDate, string $endDate, bool $forceRefresh = false): array {
+    $cacheKey = "ms_events_{$userId}_{$startDate}_{$endDate}";
+    if (!$forceRefresh) {
+        $cached = fociz_cache_get($cacheKey);
+        if ($cached !== null && is_array($cached)) {
+            return $cached;
+        }
+    }
+
     $token = microsoft_get_valid_token($userId);
     if (!$token) {
         return [];
@@ -400,6 +409,7 @@ function microsoft_fetch_events_range(int $userId, string $startDate, string $en
         ];
     }
 
+    fociz_cache_set($cacheKey, $events, 60);
     return $events;
 }
 
@@ -520,6 +530,7 @@ function microsoft_create_event(int $userId, array $eventData): array {
     }
 
     if ($response['status'] === 201 && is_array($response['json'])) {
+        fociz_cache_delete_pattern("ms_events_{$userId}_");
         return [
             'success'   => true,
             'event_id'  => $response['json']['id'] ?? null,
@@ -559,7 +570,11 @@ function microsoft_delete_event(int $userId, string $eventId): bool {
         'timeout' => 12,
     ]);
 
-    return in_array($response['status'], [200, 204, 404]);
+    $ok = in_array($response['status'], [200, 204, 404]);
+    if ($ok) {
+        fociz_cache_delete_pattern("ms_events_{$userId}_");
+    }
+    return $ok;
 }
 
 /**
@@ -628,7 +643,11 @@ function microsoft_update_event(int $userId, string $eventId, array $eventData):
         }
     }
 
-    return in_array($response['status'], [200, 204]);
+    $ok = in_array($response['status'], [200, 204]);
+    if ($ok) {
+        fociz_cache_delete_pattern("ms_events_{$userId}_");
+    }
+    return $ok;
 }
 
 /**
@@ -985,7 +1004,15 @@ function microsoft_get_mail_demo_data(): array {
 /**
  * Haalt inbox berichten op van Microsoft Graph API (of retourneert demo data)
  */
-function microsoft_fetch_inbox_messages(int $userId, int $limit = 25, bool $unreadOnly = false): array {
+function microsoft_fetch_inbox_messages(int $userId, int $limit = 25, bool $unreadOnly = false, bool $forceRefresh = false): array {
+    $cacheKey = "ms_inbox_{$userId}_{$limit}_" . ($unreadOnly ? '1' : '0');
+    if (!$forceRefresh) {
+        $cached = fociz_cache_get($cacheKey);
+        if ($cached !== null && is_array($cached)) {
+            return $cached;
+        }
+    }
+
     $db = get_db_connection();
     $stmt = $db->prepare("SELECT * FROM integrations WHERE user_id = ? AND provider = 'OUTLOOK' AND is_enabled = 1");
     $stmt->execute([$userId]);
@@ -1118,13 +1145,15 @@ function microsoft_fetch_inbox_messages(int $userId, int $limit = 25, bool $unre
 
     $unreadCount = count(array_filter($messages, function($m) { return empty($m['is_read']); }));
 
-    return [
+    $result = [
         'success'      => true,
         'is_demo'      => false,
         'messages'     => $messages,
         'unread_count' => $unreadCount,
         'total_count'  => count($messages),
     ];
+    fociz_cache_set($cacheKey, $result, 45); // 45 seconden cache
+    return $result;
 }
 
 /**
@@ -1239,7 +1268,11 @@ function microsoft_mark_message_read(int $userId, string $messageId, bool $isRea
         'timeout' => 10,
     ]);
 
-    return ($res['status'] >= 200 && $res['status'] < 300);
+    $ok = ($res['status'] >= 200 && $res['status'] < 300);
+    if ($ok) {
+        fociz_cache_delete_pattern("ms_inbox_{$userId}_");
+    }
+    return $ok;
 }
 
 /**
@@ -1271,6 +1304,7 @@ function microsoft_reply_message(int $userId, string $messageId, string $comment
     ]);
 
     if ($res['status'] >= 200 && $res['status'] < 300) {
+        fociz_cache_delete_pattern("ms_inbox_{$userId}_");
         return ['success' => true, 'message' => 'Antwoord succesvol verzonden via Outlook.'];
     }