import { config } from '../../config/index';

/**
 * 网络请求工具函数
 * @param {Object} options 请求配置
 * @param {string} options.url 请求地址
 * @param {string} options.method 请求方法
 * @param {Object} options.data 请求数据
 * @param {Object} options.header 请求头
 */
export function request(options) {
  const { url, method = 'GET', data = {}, header = {} } = options;
  
  // 构建完整的请求URL
  const fullUrl = `${config.apiBase}${url}`;
  
  // 获取token
  const token = wx.getStorageSync('token');
  
  // 设置默认请求头
  const defaultHeader = {
    'Content-Type': 'application/json',
    ...header
  };
  
  // 如果有token，添加到请求头
  if (token) {
    defaultHeader['Authorization'] = `Bearer ${token}`;
  }
  
  return new Promise((resolve, reject) => {
    wx.request({
      url: fullUrl,
      method: method.toUpperCase(),
      data: data,
      header: defaultHeader,
      success: (res) => {
        console.log(`API请求成功: ${method.toUpperCase()} ${fullUrl}`, res);
        
        if (res.statusCode === 200) {
          // 检查业务状态码
          if (res.data && res.data.code === 200) {
            resolve(res.data);
          } else {
            // 业务错误
            const errorMsg = res.data?.message || '请求失败';
            console.error('API业务错误:', errorMsg);
            reject(new Error(errorMsg));
          }
        } else if (res.statusCode === 401) {
          // 未授权，清除token并跳转到登录页
          wx.removeStorageSync('token');
          wx.showToast({
            title: '请先登录',
            icon: 'none'
          });
          setTimeout(() => {
            wx.navigateTo({
              url: '/pages/login/index'
            });
          }, 1500);
          reject(new Error('未授权'));
        } else {
          // HTTP错误
          const errorMsg = `请求失败: ${res.statusCode}`;
          console.error('API HTTP错误:', errorMsg);
          reject(new Error(errorMsg));
        }
      },
      fail: (error) => {
        console.error(`API请求失败: ${method.toUpperCase()} ${fullUrl}`, error);
        
        // 网络错误处理
        let errorMsg = '网络请求失败';
        if (error.errMsg) {
          if (error.errMsg.includes('timeout')) {
            errorMsg = '请求超时，请检查网络连接';
          } else if (error.errMsg.includes('fail')) {
            errorMsg = '网络连接失败，请检查网络设置';
          }
        }
        
        wx.showToast({
          title: errorMsg,
          icon: 'none'
        });
        
        reject(new Error(errorMsg));
      }
    });
  });
}

/**
 * GET请求
 */
export function get(url, data = {}, header = {}) {
  return request({ url, method: 'GET', data, header });
}

/**
 * POST请求
 */
export function post(url, data = {}, header = {}) {
  return request({ url, method: 'POST', data, header });
}

/**
 * PUT请求
 */
export function put(url, data = {}, header = {}) {
  return request({ url, method: 'PUT', data, header });
}

/**
 * DELETE请求
 */
export function del(url, data = {}, header = {}) {
  return request({ url, method: 'DELETE', data, header });
}