export default defineNuxtPlugin(() => {
  const config = useRuntimeConfig();
  
  if (!config.public.useMockData) {
    return; // ใช้ API จริง
  }
  // Mock Data
  const mockUsers = [
    { id: '1', email: 'instructor@test.com', fullName: 'อาจารย์ทดสอบ', role: 'INSTRUCTOR' },
    { id: '2', email: 'admin@test.com', fullName: 'ผู้ดูแลระบบ', role: 'ADMIN' }
  ];
  const mockCourses = [
    { 
      id: '1', 
      title: 'Python เบื้องต้น', 
      description: 'เรียนรู้ Python จากพื้นฐาน',
      instructorId: '1',
      status: 'PUBLISHED',
      thumbnail: '/images/python.jpg'
    },
    { 
      id: '2', 
      title: 'JavaScript สำหรับเว็บ', 
      description: 'พัฒนาเว็บด้วย JavaScript',
      instructorId: '1',
      status: 'DRAFT',
      thumbnail: '/images/javascript.jpg'
    }
  ];
  // Mock API Functions
  const mockApi = {
    // Auth
    login: async (email: string, password: string) => {
      await new Promise(resolve => setTimeout(resolve, 500)); // Simulate delay
      const user = mockUsers.find(u => u.email === email);
      if (user) {
        return {
          token: 'mock-jwt-token',
          user
        };
      }
      throw new Error('Invalid credentials');
    },
    // Courses
    getCourses: async () => {
      await new Promise(resolve => setTimeout(resolve, 300));
      return mockCourses;
    },
    getCourse: async (id: string) => {
      await new Promise(resolve => setTimeout(resolve, 300));
      return mockCourses.find(c => c.id === id);
    },
    createCourse: async (data: any) => {
      await new Promise(resolve => setTimeout(resolve, 500));
      const newCourse = {
        id: String(mockCourses.length + 1),
        ...data,
        status: 'DRAFT'
      };
      mockCourses.push(newCourse);
      return newCourse;
    },
    // Users
    getUsers: async () => {
      await new Promise(resolve => setTimeout(resolve, 300));
      return mockUsers;
    }
  };
  return {
    provide: {
      mockApi
    }
  };
});