обновил дизайн, добавил дашборд

frontend/admin/js/api.js

@@ -92,6 +92,41 @@ export async function refreshAccessToken() {
     return refreshPromise;
 }
 
+const cache = new Map();
+
+const CACHABLE_PREFIXES = [
+    '/api/departments',
+    '/api/specialties',
+    '/api/education-forms',
+    '/api/users/teachers',
+    '/api/equipments',
+    '/api/classrooms'
+];
+
+function invalidateCache(url) {
+    const cacheKeysToClear = [
+        '/api/departments',
+        '/api/specialties',
+        '/api/education-forms',
+        '/api/users',
+        '/api/equipments',
+        '/api/classrooms'
+    ];
+    for (const prefix of cacheKeysToClear) {
+        if (url.includes(prefix)) {
+            for (const cacheKey of cache.keys()) {
+                if (cacheKey.includes(prefix)) {
+                    cache.delete(cacheKey);
+                }
+            }
+        }
+    }
+}
+
+export function clearCache() {
+    cache.clear();
+}
+
 export async function logout() {
     try {
         await fetch('/api/auth/logout', {
@@ -102,6 +137,7 @@ export async function logout() {
         console.warn('Не удалось завершить серверную сессию:', e.message);
     } finally {
         clearAuthState();
+        clearCache();
     }
 }
 
@@ -121,8 +157,26 @@ export function clearAuthState() {
 }
 
 export const api = {
-    get: (url) => apiFetch(url, 'GET'),
-    post: (url, body) => apiFetch(url, 'POST', body),
-    put: (url, body) => apiFetch(url, 'PUT', body),
-    delete: (url, body = null) => apiFetch(url, 'DELETE', body)
+    get: async (url) => {
+        const isCachable = CACHABLE_PREFIXES.some(prefix => url.startsWith(prefix));
+        if (isCachable) {
+            if (!cache.has(url)) {
+                cache.set(url, await apiFetch(url, 'GET'));
+            }
+            return cache.get(url);
+        }
+        return apiFetch(url, 'GET');
+    },
+    post: async (url, body) => {
+        invalidateCache(url);
+        return apiFetch(url, 'POST', body);
+    },
+    put: async (url, body) => {
+        invalidateCache(url);
+        return apiFetch(url, 'PUT', body);
+    },
+    delete: async (url, body = null) => {
+        invalidateCache(url);
+        return apiFetch(url, 'DELETE', body);
+    }
 };