feat: Add admin user and category management services and instructor course creation and listing pages.

frontend_management/services/admin.service.ts

@@ -185,7 +185,7 @@ export const adminService = {
         }
 
         const token = getAuthToken();
-        const response = await $fetch<CategoriesListResponse>('/api/admin/categories', {
+        const response = await $fetch<CategoriesListResponse>('/api/categories', {
             baseURL: config.public.apiBaseUrl as string,
             headers: {
                 Authorization: `Bearer ${token}`

frontend_management/services/instructor.service.ts

@@ -126,6 +126,54 @@ export const instructorService = {
             }
         });
 
+        return response.data;
+    },
+
+    async createCourse(data: CreateCourseRequest): Promise<CourseResponse> {
+        const config = useRuntimeConfig();
+        const useMockData = config.public.useMockData as boolean;
+
+        if (useMockData) {
+            await new Promise(resolve => setTimeout(resolve, 500));
+            return {
+                ...MOCK_COURSES[0],
+                id: Date.now(),
+                ...data,
+                price: String(data.price), // Convert number to string to match CourseResponse type
+                status: 'DRAFT',
+                created_at: new Date().toISOString(),
+                updated_at: new Date().toISOString()
+            } as CourseResponse;
+        }
+
+        const token = getAuthToken();
+        const response = await $fetch<{ code: number; data: CourseResponse }>('/api/instructors/courses', {
+            method: 'POST',
+            baseURL: config.public.apiBaseUrl as string,
+            headers: {
+                Authorization: `Bearer ${token}`
+            },
+            body: { data }
+        });
+
         return response.data;
     }
 };
+
+// Create course request
+export interface CreateCourseRequest {
+    category_id: number;
+    title: {
+        en: string;
+        th: string;
+    };
+    slug: string;
+    description: {
+        en: string;
+        th: string;
+    };
+    thumbnail_url?: string | null;
+    price: number;
+    is_free: boolean;
+    have_certificate: boolean;
+}