import { WarehouseInfo, UserInfo, DeliveryPerson, Order, EmployeeInfo } from '../types';


/**
 * API服务基类
 * 提供与后端API交互的核心功能
 */

// API基础URL配置
const IS_LOCAL_DEV = false; // true: 本地开发环境, false: 生产环境
const API_BASE_URL = IS_LOCAL_DEV ? 'http://localhost:8080' : 'https://www.doubleyin.cn';

console.log(`当前API地址: ${API_BASE_URL} (${IS_LOCAL_DEV ? '本地开发环境' : '生产环境'})`);

/**
 * 是否启用模拟模式
 * 该配置控制是否使用模拟数据进行开发测试
 */
export const isMockMode = false;

/**
 * API服务类
 * 封装了所有与后端API交互的方法，并按照功能模块进行组织
 */
class ApiService {
  /**
   * 位置更新回调函数集合
   */
  private locationUpdateCallbacks: Set<(location: any) => void> | null;
  
  /**
   * 位置更新WebSocket连接
   */
  private locationWebSocket: any | null;
  
  /**
   * 构造函数
   */
  constructor() {
    this.locationUpdateCallbacks = null;
    this.locationWebSocket = null;
  }
  
  /**
   * 基础请求方法
   * @param endpoint API端点路径
   * @param options 请求配置选项
   * @returns Promise<T> 返回泛型类型的响应数据
   */
  private async request<T>(endpoint: string, options: {
    method?: string;
    data?: any;
    headers?: Record<string, string> 
  } = {}): Promise<T> {
    const requestUrl = `${API_BASE_URL}${endpoint}`;
    
    // 获取全局token
    const app = getApp<any>();
    const token = app.globalData.token;
    
    // 构建请求头，自动添加Authorization头（如果存在token）
    const headers: Record<string, string> = {
      'Content-Type': 'application/json',
      ...options.headers,
    };
    
    if (token) {
      headers['Authorization'] = `Bearer ${token}`;
    }
    
    const requestOptions = {
      method: options.method || 'GET',
      data:  options.data,
      header: headers,
    };
    
    // 打印请求信息
    console.log('\n========== API Request ==========');
    console.log(`Method: ${requestOptions.method}`);
    console.log(`URL: ${requestUrl}`);
    console.log(`Headers:`, requestOptions.header);
    console.log(`Data:`, requestOptions.data);
    console.log('================================');
    
    return new Promise((resolve, reject) => {
      wx.request({
        url: requestUrl,
        method: requestOptions.method as any,
        data: requestOptions.data,
        header: requestOptions.header,
        success: (res: any) => {
          // 打印响应信息
          console.log('\n========== API Response ==========');
          console.log(`URL: ${requestUrl}`);
          console.log(`Status: ${res.statusCode}`);
          console.log(`Response Data:`, res.data);
          console.log('==================================');
          
          if (res.statusCode >= 200 && res.statusCode < 300) {
            resolve(res.data);
          } else {
            console.error(`API Error: HTTP ${res.statusCode}: ${res.errMsg}`);
            reject(new Error(`HTTP ${res.statusCode}: ${res.errMsg}`));
          }
        },
        fail: (err: any) => {
          console.error('\n========== API Request Failed ==========');
          console.error(`URL: ${requestUrl}`);
          console.error(`Error: ${err.errMsg}`);
          console.error('=======================================');
          reject(new Error(`Request failed: ${err.errMsg}`));
        }
      });
    });
  }

  // ==================== 用户模块 ====================

  // ====== 认证相关 ======

  /**
 * 微信登录接口
 * @param code 微信登录授权码
 * @returns 用户信息及认证令牌
 */
async ServerLogin(code: string) {
  console.log('API wxLogin调用，参数code:', code);
  return await this.request<{ user: UserInfo; token: string; openid: string; session_key: string }>('/user/wxlogin', {
    method: 'POST',
    data: { code: code },
  });
}

/**
   * 签到接口
   * @param userId 用户ID
   * @returns 签到结果和员工信息
   */
  async userSignIn(userId: number): Promise<{ success: boolean; employeeInfo: EmployeeInfo; message?: string }> {
    console.log('API userSignIn调用，参数userId:', userId);
    
    // 服务器返回的是用户对象，需要转换为前端期望的格式
    const response = await this.request<any>('/user/signin', {
      method: 'POST',
      data: { userId },
    });
    
    // 转换响应格式
    return {
      success: true,
      employeeInfo: {
        id: response.id,
        name: response.name,
        phone: response.phone,
        role: response.role || 'DELIVERY_PERSON'
      },
      message: '签到成功'
    };
  }

/**
   * 注册接口
   * @param userInfo 注册用户信息
   * @returns 注册结果和员工信息
   */
  async userRegister(userInfo: { name: string; phone: string }): Promise<{ success: boolean; employeeInfo: EmployeeInfo; message?: string }> {
    console.log('API userRegister调用，参数userInfo:', userInfo);
    
    // 服务器返回的是用户对象，需要转换为前端期望的格式
    const response = await this.request<any>('/user/register', {
      method: 'POST',
      data: userInfo,
    });
    
    // 转换响应格式
    return {
      success: true,
      employeeInfo: {
        id: response.id,
        name: response.name || userInfo.name, // 如果服务器返回null，使用用户输入的值
        phone: response.phone || userInfo.phone, // 如果服务器返回null，使用用户输入的值
        role: response.role || 'DELIVERY_PERSON'
      },
      message: '注册成功'
    };
  }



  /**
   * 用户登出
   */
  async logout(): Promise<void> {
    return await this.request('/user/logout', { method: 'POST' });
  }

  /**
   * 获取用户签到状态
   * @returns 用户状态信息
   */
  async getUserStatus(): Promise<{ status: 'signed_in' | 'signed_out' | 'registered' | 'unregistered'; lastSignInTime?: string; lastSignOutTime?: string }> {
    return await this.request('/user/status', { method: 'GET' });
  }

  // ====== 信息相关 ======

  /**
   * 获取当前用户信息
   * @returns 用户详细信息
   */
  async getUserInfo() {
    return await this.request<UserInfo>('/user/info');
  }

  /**
   * 更新用户信息
   * @param userInfo 待更新的用户信息
   * @returns 更新后的用户信息
   */
  async updateUserInfo(userInfo: Partial<UserInfo>): Promise<UserInfo> {
    return await this.request<UserInfo>('/user/update', {
      method: 'PUT',
      data: userInfo,
    });
  }

  /**
   * 获取用户权限列表
   * @returns 权限字符串数组
   */
  async getUserPermissions(): Promise<string[]> {
    return await this.request<string[]>('/user/permissions');
  }

  /**
   * 检查用户是否在线
   * @returns 在线状态
   */
  async checkUserOnline(): Promise<boolean> {
    return await this.request<boolean>('/user/online');
  }

  /**
   * 获取用户会话信息
   * @returns 会话详细信息
   */
  async getSessionInfo(): Promise<{
    userId: number;
    sessionId: string;
    expiresAt: number;
    permissions: string[];
  }> {
    return await this.request<{
      userId: number;
      sessionId: string;
      expiresAt: number;
      permissions: string[];
    }>('/user/session');
  }

  /**
   * 刷新用户令牌
   * @param oldToken 旧令牌
   * @returns 新令牌及过期时间
   */
  async refreshToken(oldToken: string): Promise<{ token: string; expiresAt: number }> {
    return await this.request<{ token: string; expiresAt: number }>('/user/refresh-token', {
      method: 'POST',
      data: { token: oldToken },
    });
  }

  /**
   * 验证用户权限
   * @param permission 待验证的权限
   * @returns 是否拥有该权限
   */
  async verifyPermission(permission: string): Promise<boolean> {
    return await this.request<boolean>(`/user/verify-permission?permission=${permission}`);
  }

  // ====== 管理相关 ======

  /**
   * 搜索用户
   * @param query 搜索关键词
   * @param page 页码
   * @param pageSize 每页数量
   * @returns 用户列表及分页信息
   */
  async searchUsers(query: string, page: number = 1, pageSize: number = 20): Promise<{
    users: UserInfo[];
    total: number;
    page: number;
    pageSize: number;
  }> {
    return await this.request<{ users: UserInfo[]; total: number; page: number; pageSize: number }>(
      `/user/search?query=${query}&page=${page}&pageSize=${pageSize}`
    );
  }

  /**
   * 批量操作用户状态
   * @param userIds 用户ID列表
   * @param status 目标状态
   */
  async batchUpdateUserStatus(userIds: number[], status: 'active' | 'inactive' | 'suspended'): Promise<void> {
    return await this.request('/user/batch-update-status', {
      method: 'POST',
      data: { userIds, status },
    });
  }

  // ==================== 仓库相关接口 ====================

  /**
   * 获取所有仓库列表
   * @returns 仓库信息数组
   */
  async getWarehouses(): Promise<WarehouseInfo[]> {
    return await this.request<WarehouseInfo[]>('/warehouses');
  }

  /**
   * 获取指定仓库详情
   * @param id 仓库ID
   * @returns 仓库详细信息
   */
  async getWarehouseById(id: number): Promise<WarehouseInfo> {
    return await this.request<WarehouseInfo>(`/warehouses/${id}`);
  }

  /**
   * 获取仓库相关订单
   * @param warehouseId 仓库ID
   * @returns 订单列表
   */
  async getWarehouseOrders(warehouseId: number): Promise<Order[]> {
    return await this.request<Order[]>(`/warehouses/${warehouseId}/orders`);
  }

  // ==================== 货运人员接口 ====================

  /**
   * 获取所有货运人员
   * @returns 货运人员列表
   */
  async getDeliveryPersons(): Promise<DeliveryPerson[]> {
    return await this.request<DeliveryPerson[]>('/delivery-persons');
  }

  /**
   * 获取所有配送员实时位置
   * @returns 所有配送员实时位置信息
   */
  async getAllDeliveryPersonLocations(): Promise<Array<{
    deliveryPersonId: number;
    name: string;
    latitude: number;
    longitude: number;
    status: string;
  }>> {
    return await this.request<Array<{
      deliveryPersonId: number;
      name: string;
      latitude: number;
      longitude: number;
      status: string;
    }>>('/location-sync/delivery-persons/locations');
  }

  /**
   * 获取指定货运人员详情
   * @param id 货运人员ID
   * @returns 货运人员详细信息
   */
  async getDeliveryPersonById(id: number): Promise<DeliveryPerson> {
    return await this.request<DeliveryPerson>(`/delivery-persons/${id}`);
  }

  /**
   * 更新货运人员位置
   * @param id 货运人员ID
   * @param location 位置信息
   */
  async updateDeliveryPersonLocation(id: number, location: { longitude: number; latitude: number }): Promise<void> {
    return await this.request(`/delivery-persons/${id}/location`, {
      method: 'PUT',
      data: location,
    });
  }

  // 地图相关接口支持
  /**
   * 批量更新货运人员位置（兼容mapService参数）
   * @param locations 位置信息数组
   */
  async batchUpdateDeliveryPersonLocations(locations: Array<{
    userId: number;
    latitude: number;
    longitude: number;
    timestamp: number;
  }>): Promise<void> {
    // 转换参数格式以匹配原有API
    const formattedLocations = locations.map(loc => ({
      deliveryPersonId: loc.userId,
      longitude: loc.longitude,
      latitude: loc.latitude,
      timestamp: loc.timestamp
    }));
    
    await this.request('/delivery-persons/locations/batch', {
      method: 'POST',
      data: { locations: formattedLocations }
    });
  }



  /**
   * 获取空闲的货运人员
   * @returns 空闲货运人员列表
   */
  async getIdleDeliveryPersons(): Promise<DeliveryPerson[]> {
    return await this.request<DeliveryPerson[]>('/delivery-persons/idle');
  }

  /**
   * 获取忙碌的货运人员
   * @returns 忙碌货运人员列表
   */
  async getBusyDeliveryPersons(): Promise<DeliveryPerson[]> {
    return await this.request<DeliveryPerson[]>('/delivery-persons/busy');
  }

  /**
   * 获取位置历史记录
   * @param deliveryPersonId 货运人员ID
   * @param limit 记录数量
   * @returns 位置历史记录
   */
  async getLocationHistory(deliveryPersonId: number, limit: number = 50): Promise<Array<{
    timestamp: number;
    longitude: number;
    latitude: number;
    speed?: number;
    accuracy?: number;
  }>> {
    return await this.request<Array<{
      timestamp: number;
      longitude: number;
      latitude: number;
      speed?: number;
      accuracy?: number;
    }>>(`/delivery-persons/${deliveryPersonId}/location-history?limit=${limit}`);
  }

  /**
   * 订阅实时位置更新（接收货运人员ID列表）
   * @param deliveryPersonIds 货运人员ID列表
   * @returns 订阅信息
   */
  async subscribeToRealTimeLocations(deliveryPersonIds: number[]): Promise<{
    subscriptionId: string;
    expiresAt: number;
  }> {
    if (isMockMode) {
      // 模拟数据 - 返回模拟的订阅信息
      console.log('[MOCK] 订阅实时位置更新，货运人员ID列表:', deliveryPersonIds);
      return {
        subscriptionId: `mock-subscription-${Date.now()}`,
        expiresAt: Date.now() + 3600000 // 1小时后过期
      };
    }
    
    // 真实环境中调用API
    try {
      return await this.request<{
        subscriptionId: string;
        expiresAt: number;
      }>('/locations/subscribe', {
        method: 'POST',
        data: { deliveryPersonIds }
      });
    } catch (error) {
      console.error('订阅实时位置更新失败:', error);
      throw error;
    }
  }
  
  /**
   * 取消订阅实时位置更新
   * @param subscriptionId 订阅ID
   */
  async unsubscribeFromRealTimeLocations(subscriptionId: string): Promise<void> {
    if (isMockMode) {
      // 模拟数据 - 记录取消订阅操作
      console.log('[MOCK] 取消订阅实时位置更新，订阅ID:', subscriptionId);
      return;
    }
    
    // 真实环境中调用API
    try {
      await this.request<void>('/locations/unsubscribe', {
        method: 'POST',
        data: { subscriptionId }
      });
    } catch (error) {
      console.error('取消订阅实时位置更新失败:', error);
      throw error;
    }
  }
  
  /**
   * 注册位置更新回调函数
   * @param callback 位置更新回调函数
   * @returns 取消订阅函数
   */
  onLocationUpdate(callback: (location: any) => void): () => void {
    // 添加回调到集合
    if (!this.locationUpdateCallbacks) {
      this.locationUpdateCallbacks = new Set();
    }
    this.locationUpdateCallbacks.add(callback);
    
    // 返回取消订阅函数
    return () => {
      if (this.locationUpdateCallbacks) {
        this.locationUpdateCallbacks.delete(callback);
        // 如果没有回调了，可以关闭WebSocket连接
        if (this.locationUpdateCallbacks.size === 0 && this.locationWebSocket) {
          this.locationWebSocket.close();
          this.locationWebSocket = null;
        }
      }
    };
  }
  
  // ===== 私有属性和方法 =====
  
  /**
   * 初始化位置更新WebSocket连接
   */
  public async initLocationWebSocket(): Promise<void> {
    if (this.locationWebSocket) {
      console.log('WebSocket连接已存在');
      return;
    }
    
    try {
      if (typeof wx !== 'undefined' && typeof wx.connectSocket === 'function') {
        console.log('初始化位置更新WebSocket连接（小程序环境）');
        
        // 连接到服务端的WebSocket地址，使用配置的服务器地址
        const serverUrl = API_BASE_URL.replace('http', 'ws');
        const wsUrl = `${serverUrl}/ws/location`;
        
        this.locationWebSocket = wx.connectSocket({
          url: wsUrl,
          header: {
            'content-type': 'application/json'
          }
        });
        
        // WebSocket连接打开事件
        wx.onSocketOpen(() => {
          console.log('WebSocket连接已打开');
        });
        
        // WebSocket消息接收事件
        wx.onSocketMessage((res) => {
          try {
            const message = JSON.parse(typeof res.data === 'string' ? res.data : String(res.data));
            this.handleWebSocketMessage(message);
          } catch (error) {
            console.error('解析WebSocket消息失败:', error);
          }
        });
        
        // WebSocket连接关闭事件
        wx.onSocketClose(() => {
          console.log('WebSocket连接已关闭');
          this.locationWebSocket = null;
        });
        
        // WebSocket错误事件
        wx.onSocketError((error) => {
          console.error('WebSocket连接错误:', error);
          this.locationWebSocket = null;
        });
      } else {
        console.warn('当前环境不支持WebSocket连接');
      }
    } catch (error) {
      console.error('初始化位置更新WebSocket连接失败:', error);
      this.locationWebSocket = null;
    }
  }
  
  /**
   * 关闭位置更新WebSocket连接
   */
  public async closeLocationWebSocket(): Promise<void> {
    if (this.locationWebSocket && typeof wx !== 'undefined' && typeof wx.closeSocket === 'function') {
      wx.closeSocket();
      this.locationWebSocket = null;
      console.log('WebSocket连接已关闭');
    }
  }
  
  /**
   * 处理WebSocket消息
   * @param message 接收到的消息
   */
  private handleWebSocketMessage(message: any): void {
    if (!message || typeof message.type !== 'string') {
      console.warn('收到无效的WebSocket消息:', message);
      return;
    }
    
    switch (message.type) {
      case 'updateLocation':
        // 处理位置更新消息
        this.onLocationUpdate(message);
        break;
      default:
        console.warn('收到未知类型的WebSocket消息:', message);
        break;
    }
  }
  
  /**
   * 发送WebSocket消息
   * @param message 要发送的消息
   */
  private sendWebSocketMessage(message: any): void {
    if (!this.locationWebSocket) {
      console.warn('WebSocket连接未建立，无法发送消息');
      return;
    }
    
    try {
      const messageStr = JSON.stringify(message);
      if (typeof wx !== 'undefined' && typeof wx.sendSocketMessage === 'function') {
        wx.sendSocketMessage({
          data: messageStr
        });
      }
    } catch (error) {
      console.error('发送WebSocket消息失败:', error);
    }
  }
  
  /**
   * 订阅位置更新
   * @param deliveryPersonId 配送员ID
   */
  async subscribeToLocationUpdates(deliveryPersonId: number): Promise<void> {
    if (isMockMode) {
      console.log('[MOCK] 订阅位置更新');
      return;
    }
    
    // 确保WebSocket连接已建立
    if (!this.locationWebSocket) {
      this.initLocationWebSocket();
    }
    
    // 发送订阅消息
    const subscribeMessage = {
      type: 'subscribe',
      deliveryPersonId: deliveryPersonId,
      timestamp: Date.now()
    };
    
    this.sendWebSocketMessage(subscribeMessage);
  }
  
  /**
   * 取消订阅位置更新
   * @param deliveryPersonId 配送员ID
   */
  async unsubscribeFromLocationUpdates(deliveryPersonId: number): Promise<void> {
    if (isMockMode) {
      console.log('[MOCK] 取消订阅位置更新');
      return;
    }
    
    // 发送取消订阅消息
    const unsubscribeMessage = {
      type: 'unsubscribe',
      deliveryPersonId: deliveryPersonId,
      timestamp: Date.now()
    };
    
    this.sendWebSocketMessage(unsubscribeMessage);
  }
  
  /**
   * 发送位置更新
   * @param deliveryPersonId 配送员ID
   * @param latitude 纬度
   * @param longitude 经度
   */
  async sendLocationUpdate(deliveryPersonId: number, latitude: number, longitude: number): Promise<void> {
    if (isMockMode) {
      console.log('[MOCK] 发送位置更新');
      return;
    }
    
    // 确保WebSocket连接已建立
    if (!this.locationWebSocket) {
      this.initLocationWebSocket();
    }
    
    // 发送位置更新消息
    const locationMessage = {
      type: 'updateLocation',
      deliveryPersonId: deliveryPersonId,
      latitude: latitude,
      longitude: longitude,
      timestamp: Date.now()
    };
    
    this.sendWebSocketMessage(locationMessage);
  }

  // ==================== 订单接口 ====================

  /**
   * 获取待指派订单
   * @returns 待指派订单列表
   */
  async getPendingOrders(): Promise<Order[]> {
    return await this.request<Order[]>('/orders/pending');
  }

  /**
   * 指派订单给货运人员
   * @param orderId 订单ID
   * @param deliveryPersonId 货运人员ID
   */
  async assignOrder(orderId: number, deliveryPersonId: number): Promise<{ success: boolean; message?: string }> {
    return await this.request<{ success: boolean; message?: string }>(`/orders/${orderId}/assign`, {
      method: 'POST',
      data: { deliveryPersonId },
    });
  }

  /**
   * 获取货运人员当前订单
   * @param deliveryPersonId 货运人员ID
   * @returns 订单列表
   */
  async getDeliveryPersonOrders(deliveryPersonId: number): Promise<Order[]> {
    return await this.request<Order[]>(`/delivery-persons/${deliveryPersonId}/orders`);
  }

  /**
   * 根据ID获取订单
   * @param id 订单ID
   * @returns 订单详细信息
   */
  async getOrderById(id: number): Promise<Order> {
    return await this.request<Order>(`/orders/${id}`);
  }

  /**
   * 更新订单状态
   * @param orderId 订单ID
   * @param status 目标状态
   */
  async updateOrderStatus(orderId: number, status: Order['status']): Promise<{ success: boolean; message?: string }> {
    return await this.request<{ success: boolean; message?: string }>(`/orders/${orderId}/status`, {
      method: 'PUT',
      data: { status },
    });
  }

  /**
   * 创建新订单
   * @param orderData 订单数据
   * @returns 创建的订单信息
   */
  async createOrder(orderData: Omit<Order, 'id' | 'createTime'>): Promise<Order> {
    return await this.request<Order>('/orders', {
      method: 'POST',
      data: orderData,
    });
  }

  /**
   * 删除订单
   * @param orderId 订单ID
   */
  async deleteOrder(orderId: number): Promise<void> {
    return await this.request(`/orders/${orderId}`, {
      method: 'DELETE',
    });
  }

  // ==================== 统计和日志接口 ====================

  /**
   * 获取系统统计信息
   * @returns 系统统计数据
   */
  async getSystemStats(): Promise<{
    totalWarehouses: number;
    totalDeliveryPersons: number;
    pendingOrders: number;
    activeOrders: number;
  }> {
    return await this.request<{
      totalWarehouses: number;
      totalDeliveryPersons: number;
      pendingOrders: number;
      activeOrders: number;
    }>('/stats/system');
  }

  /**
   * 获取订单统计信息
   * @param timeRange 时间范围
   * @returns 订单统计数据
   */
  async getOrderStats(timeRange: 'today' | 'week' | 'month'): Promise<{
    totalOrders: number;
    completedOrders: number;
    inProgressOrders: number;
    averageDeliveryTime: number;
  }> {
    return await this.request<{
      totalOrders: number;
      completedOrders: number;
      inProgressOrders: number;
      averageDeliveryTime: number;
    }>(`/stats/orders?timeRange=${timeRange}`);
  }

  /**
   * 获取用户统计信息
   * @returns 用户统计数据
   */
  async getUserStats(): Promise<{
    totalUsers: number;
    activeUsers: number;
    onlineUsers: number;
    newUsersToday: number;
  }> {
    return await this.request<{
      totalUsers: number;
      activeUsers: number;
      onlineUsers: number;
      newUsersToday: number;
    }>('/user/stats');
  }

  /**
   * 获取用户活动日志
   * @param userId 用户ID
   * @param limit 日志数量
   * @returns 活动日志列表
   */
  async getUserActivityLogs(userId: number, limit: number = 20): Promise<Array<{
    id: number;
    action: string;
    timestamp: number;
    details?: any;
  }>> {
    return await this.request<Array<{ id: number; action: string; timestamp: number; details?: any }>>( 
      `/user/${userId}/activity-logs?limit=${limit}`
    );
  }

  /**
   * 上传错误日志
   * @param error 错误信息
   */
  async uploadErrorLog(error: any): Promise<void> {
    await this.request('/logs/error', {
      method: 'POST',
      data: {
        error: error instanceof Error ? error.message : String(error),
        stack: error instanceof Error ? error.stack : undefined,
        timestamp: Date.now(),
        userAgent: 'miniprogram/' + (typeof wx !== 'undefined' ? wx.getSystemInfoSync().platform : 'unknown')
      }
    });
  }

  // ==================== 系统接口 ====================

  /**
   * 健康检查
   * @returns 系统健康状态
   */
  async healthCheck(): Promise<{
    status: 'ok' | 'degraded' | 'down';
    message: string;
    timestamp: number;
  }> {
    return await this.request<{
      status: 'ok' | 'degraded' | 'down';
      message: string;
      timestamp: number;
    }>('/health');
  }
}

/**
 * API服务单例实例
 * 导出供应用程序全局使用
 */
export default new ApiService();