const {
  DEBUG,
  CODE_NOT_LOGIN
} = require('./c.js');
const { api } = require(`./config.js`);
const md5 = require('./md5.js');
const util = require('./util.js');

const commonParams = () => {
  let deviceId = 'weapp';
  let systemVersion = 'weapp';
  let systemInfo = util.getStorageSync('systemInfo');
  if (!systemInfo) {
    systemInfo = wx.getSystemInfoSync();
    if (systemInfo) {
      wx.setStorageSync('systemInfo', systemInfo);
    }
  }
  if (systemInfo) {
    let {
      brand,
      model,
      system
    } = systemInfo;
    if (brand || model) {
      deviceId = brand + model;
    }
    if (system && 'string' === typeof (system)) {
      systemVersion = system;
    }
  }
  let params = {
    language: 'cn', //语言参数
    deviceType: 'weapp', //接口调用来源参数
    deviceId: deviceId, //设备唯一标识码
    apiVersion: '1.0.3', //api版本号
    systemVersion: systemVersion, //操作系统及版本号
    version: "2.0.0", // 线上版本号
  };
  let loginUserInfo = util.getStorageSync('userInfo');
  if (loginUserInfo) {
    let token = loginUserInfo.token;
    if (token) {
      params.token = token; //用户登录凭证token
    }
  }
  return params;
}

/*参数签名*/
const paramsSign = (params, url) => {
  let key = 'a2e947b603f8a95ce24db5a3c86';
  if ((url && url.indexOf(`${api}/common`) === 0) || url.indexOf('/common/upload/files') !== -1) {
    key = 'b15681f74461af9642ab5356fba7962b';
  }
  if (url == `${api}/java/order/source-list`) {
    key = '93f725a07423fe1c889f448b33d21f46'
  }
  let allKeys = [],
    paramsLower = {},
    sArr = [],
    res = '';
  for (let k in params) {
    let kLower = k;
    allKeys.push(kLower);
    paramsLower[kLower] = "";
    if ((params[k] && params[k] !== "undefined") || params[k] === 0) {
      paramsLower[kLower] = params[k];
    }
  }
  allKeys.sort();
  allKeys.forEach((v, i, a) => {
    sArr.push(`${v}=${paramsLower[v]}`);
  });
  sArr.push(`key=${key}`);
  res = sArr.join('&');
  res = md5(res);
  return res.toLowerCase();
}

/**
 * 网络请求对象
 */
const net = {
  //isDealFail是否手动处理异常，true or false
  req: function (params, isDealFail) { //get或post请求
    if (!params) {
      wx.showToast({
        title: '请设置请求参数',
        icon: 'none',
        duration: 2000
      });
      return new Promise((resolve, reject) => {
        reject();
      });
    }
    if (!params.url) {
      wx.showToast({
        title: '请设置请求url',
        icon: 'none',
        duration: 2000
      });
      return new Promise((resolve, reject) => {
        reject();
      });
    }
    let promise = new Promise((resolve, reject) => {
      params.data = Object.assign({}, commonParams(), params.data);
      params.data.signToken = paramsSign(params.data, params.url);
      wx.request({
        url: params.url,
        data: params.data || null,
        header: {
          'content-type': 'application/x-www-form-urlencoded; charset=UTF-8'
        },
        method: params.method || 'POST',
        dataType: params.dataType || 'json',
        success: function (res) {
          res = res.data;
          let {
            code,
            msg
          } = res;
          if (0 === code) { //ok
            resolve(res);
          } else if (CODE_NOT_LOGIN === code) { //未登录
            DEBUG && console.log(`Request for ${params.url} exception.--->${JSON.stringify(msg)}`);
            wx.clearStorage();
            wx.showToast({
              title: '您的用户信息已失效，请重新登录操作',
              icon: 'none',
              duration: 2000,
              success: () => {
                wx.reLaunch({
                  url: '/pages/loginways/loginways'
                });
              },
            });
          } else {
            DEBUG && console.log(`Request for ${params.url} exception.--->${JSON.stringify(msg)}`);
            if (isDealFail) {
              reject(res);
            } else {
              wx.showToast({
                title: msg || 'error',
                icon: 'none',
                duration: 2000
              });
            }
          }
        },
        fail: function (e) {
          DEBUG && console.log(`Request for ${params.url} fail.--->${JSON.stringify(e)}`);
          if (isDealFail) {
            reject(e);
          } else {
            wx.showToast({
              title: (e && e.errMsg) || '',
              icon: 'none',
              duration: 2000
            });
          }
        },
        complete: function (res) {
          DEBUG && console.log(`Request for ${params.url} complete.--->${JSON.stringify(res)}`);
        }
      });
    });
    return promise;
  },
  uploadFile: function (params, isDealFail) { //get或post请求
    if (!params) {
      wx.showToast({
        title: '请设置请求参数',
        icon: 'none',
        duration: 2000
      });
      return new Promise((resolve, reject) => {
        reject();
      });
    }

    if (!params.url) {
      wx.showToast({
        title: '请设置请求url',
        icon: 'none',
        duration: 2000
      });
      return new Promise((resolve, reject) => {
        reject();
      });
    }

    if (!params.filePath || !params.filePath.length) {
      wx.showToast({
        title: '请设置文件资源的路径',
        icon: 'none',
        duration: 2000
      });
      return new Promise((resolve, reject) => {
        reject();
      });
    }

    let promise = new Promise((resolve, reject) => {
      params.data = Object.assign({}, commonParams(), params.data);
      params.data.signToken = paramsSign(params.data, params.url);
      wx.uploadFile({
        url: params.url,
        filePath: params.filePath,
        name: 'files[]',
        formData: params.data,
        header: {
          'content-type': 'multipart/form-data'
        },
        method: 'POST',
        success: function (res) {
          let data = res.data;
          if (typeof data == 'string' && data.constructor == String) {
            data = JSON.parse(data);
          }
          let {
            code,
            msg
          } = data;
          if (0 === parseInt(code)) { //ok
            resolve(data);
          } else if (CODE_NOT_LOGIN === code) { //未登录
            DEBUG && console.log(`Request for ${params.url} exception.--->${JSON.stringify(msg)}`);
            wx.clearStorage();
            wx.showToast({
              title: '您的用户信息已失效，请重新登录操作',
              icon: 'none',
              duration: 2000,
              success: () => {
                wx.reLaunch({
                  url: '/pages/loginways/loginways'
                });
              },
            });
          } else {
            DEBUG && console.log(`Request for ${params.url} exception.--->${JSON.stringify(msg)}`);
            if (isDealFail) {
              reject(data);
            } else {
              wx.showToast({
                title: msg || 'error',
                icon: 'none',
                duration: 2000
              });
            }
          }
        },
        fail: function (e) {
          DEBUG && console.log(`Request for ${params.url} fail.--->${JSON.stringify(e)}`);
          if (isDealFail) {
            reject(e);
          } else {
            wx.showToast({
              title: (e && e.errMsg) || '',
              icon: 'none',
              duration: 2000
            });
          }
        },
        complete: function (res) {
          DEBUG && console.log(`Request for ${params.url} complete.--->${JSON.stringify(res)}`);
        }
      });
    });
    return promise;
  },
}

module.exports = {
  commonParams,
  paramsSign,
  net
};