import axios, { type AxiosInstance, type AxiosError } from 'axios';

const API_BASE_URL = import.meta.env.VITE_API_URL || 'http://localhost:3000/api/v1';

// Create axios instance
const adminApi: AxiosInstance = axios.create({
  baseURL: API_BASE_URL,
  headers: {
    'Content-Type': 'application/json',
  },
});

// Add token interceptor
adminApi.interceptors.request.use(
  (config) => {
    const token = localStorage.getItem('access_token');
    if (token) {
      config.headers.Authorization = `Bearer ${token}`;
    }
    return config;
  },
  (error) => {
    return Promise.reject(error);
  }
);

// Add response interceptor for error handling
adminApi.interceptors.response.use(
  (response) => response,
  (error: AxiosError) => {
    if (error.response?.status === 401) {
      // Redirect to login
      localStorage.removeItem('access_token');
      window.location.href = '/login';
    }
    return Promise.reject(error);
  }
);

// API helper functions
export const adminApiHelpers = {
  // Users
  getUsers: (params?: {
    page?: number;
    limit?: number;
    role?: string;
    isActive?: boolean;
    search?: string;
  }) => adminApi.get('/admin/users', { params }),
  
  getUser: (id: string) => adminApi.get(`/admin/users/${id}`),
  
  getUserActivity: (id: string, days: number = 30) =>
    adminApi.get(`/admin/users/${id}/activity`, { params: { days } }),
  
  updateUser: (id: string, data: {
    role?: string;
    isActive?: boolean;
    firstName?: string;
    lastName?: string;
  }) => adminApi.put(`/admin/users/${id}`, data),
  
  deleteUser: (id: string, hard: boolean = false) =>
    adminApi.delete(`/admin/users/${id}?hard=${hard}`),
  
  resetPassword: (id: string) =>
    adminApi.post(`/admin/users/${id}/reset-password`),
  
  exportUsers: (format: string = 'csv') =>
    adminApi.post('/admin/users/export', null, { params: { format } }),
  
  importUsers: (file: File) => {
    const formData = new FormData();
    formData.append('file', file);
    return adminApi.post('/admin/users/import', formData, {
      headers: { 'Content-Type': 'multipart/form-data' },
    });
  },

  // Logs
  getLogs: (params?: {
    page?: number;
    limit?: number;
    level?: string;
    type?: string;
    userId?: string;
    startDate?: string;
    endDate?: string;
    search?: string;
    minDuration?: number;
  }) => adminApi.get('/admin/logs', { params }),
  
  getErrorLogs: (params?: {
    page?: number;
    limit?: number;
    userId?: string;
    startDate?: string;
    endDate?: string;
  }) => adminApi.get('/admin/logs/errors', { params }),
  
  getAccessLogs: (params?: {
    page?: number;
    limit?: number;
    userId?: string;
    startDate?: string;
    endDate?: string;
  }) => adminApi.get('/admin/logs/access', { params }),
  
  getLogById: (id: string) => adminApi.get(`/admin/logs/${id}`),
  
  getLogStats: (startDate?: string, endDate?: string) =>
    adminApi.get('/admin/logs/stats/summary', { params: { startDate, endDate } }),
  
  exportLogs: (params: {
    format?: string;
    level?: string;
    startDate?: string;
    endDate?: string;
  }) => adminApi.post('/admin/logs/export', null, { params }),
  
  cleanupLogs: (days: number = 30) =>
    adminApi.post('/admin/logs/cleanup', null, { params: { days } }),

  // Analytics
  getOverview: () => adminApi.get('/admin/analytics/overview'),
  
  getUserGrowth: (days: number = 30) =>
    adminApi.get('/admin/analytics/users/growth', { params: { days } }),
  
  getRevenue: (period: string = '30days') =>
    adminApi.get('/admin/analytics/revenue', { params: { period } }),
  
  getStorageAnalytics: () => adminApi.get('/admin/analytics/storage'),
  
  getApiUsage: (days: number = 7) =>
    adminApi.get('/admin/analytics/api-usage', { params: { days } }),
  
  getErrorRate: (days: number = 7) =>
    adminApi.get('/admin/analytics/error-rate', { params: { days } }),

  // System
  getHealth: () => adminApi.get('/admin/system/health'),
  
  getSystemInfo: () => adminApi.get('/admin/system/info'),
  
  getSettings: (category?: string) =>
    adminApi.get('/admin/system/settings', { params: { category } }),
  
  getSetting: (key: string) => adminApi.get(`/admin/system/settings/${key}`),
  
  createSetting: (data: {
    key: string;
    value: string;
    category: string;
    description?: string;
    isPublic?: boolean;
  }) => adminApi.post('/admin/system/settings', data),
  
  updateSetting: (key: string, data: {
    value: string;
    description?: string;
    isPublic?: boolean;
  }) => adminApi.put(`/admin/system/settings/${key}`, data),
  
  deleteSetting: (key: string) => adminApi.delete(`/admin/system/settings/${key}`),

  // Maintenance
  getMaintenanceStatus: () => adminApi.get('/admin/maintenance'),
  
  enableMaintenance: (message?: string) =>
    adminApi.post('/admin/maintenance/enable', { message }),
  
  disableMaintenance: () => adminApi.post('/admin/maintenance/disable'),

  // Announcements
  getAnnouncements: (activeOnly: boolean = false) =>
    adminApi.get('/admin/announcements', { params: { activeOnly } }),
  
  createAnnouncement: (data: {
    title: string;
    message: string;
    type?: string;
    priority?: number;
    targetAudience?: string;
    startsAt?: string;
    endsAt?: string;
  }) => adminApi.post('/admin/announcements', data),
  
  updateAnnouncement: (id: string, data: {
    title?: string;
    message?: string;
    type?: string;
    priority?: number;
    targetAudience?: string;
    startsAt?: string;
    endsAt?: string;
  }) => adminApi.put(`/admin/announcements/${id}`, data),
  
  toggleAnnouncement: (id: string) =>
    adminApi.patch(`/admin/announcements/${id}/toggle`),
  
  deleteAnnouncement: (id: string) =>
    adminApi.delete(`/admin/announcements/${id}`),

  // Audit
  getAuditLogs: (params?: {
    page?: number;
    limit?: number;
    userId?: string;
    action?: string;
    resourceType?: string;
    resourceId?: string;
    startDate?: string;
    endDate?: string;
  }) => adminApi.get('/admin/audit/logs', { params }),
  
  getUserAuditActivity: (userId: string, days: number = 30) =>
    adminApi.get(`/admin/audit/users/${userId}`, { params: { days } }),
  
  getResourceHistory: (type: string, id: string) =>
    adminApi.get(`/admin/audit/resource/${type}/${id}`),
  
  getAuditStats: (startDate?: string, endDate?: string) =>
    adminApi.get('/admin/audit/stats', { params: { startDate, endDate } }),

  // Security
  getFailedLogins: (params?: {
    page?: number;
    limit?: number;
    email?: string;
    ipAddress?: string;
  }) => adminApi.get('/admin/security/failed-logins', { params }),
  
  getSuspiciousActivity: () => adminApi.get('/admin/security/suspicious-activity'),
  
  getAllApiKeys: () => adminApi.get('/admin/security/api-keys'),
  
  revokeApiKey: (id: string) =>
    adminApi.patch(`/admin/security/api-keys/${id}/revoke`),
  
  getRateLimitViolations: (days: number = 7) =>
    adminApi.get('/admin/security/rate-limits', { params: { days } }),
  
  getActiveSessions: () => adminApi.get('/admin/security/sessions'),
};

export default adminApi;