import Vue from 'vue'
import '../static/encry.min.js' //接口加密工具
import hostObj from './apiConfig.js' //打包路径

/**
 * @param baseUrl		服务信息（如：/landcrm）
 * @param url				服务器接口地址，以'/'开头
 * @param method		HTTP请求方法（GET/POST）
 * @param reference	服务地址后的传参，数组形式
 * @param data			请求的参数
 * @param dataType	请求参数的传参类型（FORMDATA/JSON/XML）
 * @param mFetch		接口是否是fetch请求（true/false）
 */
export default async (baseUrl = '', url = '', method = 'GET', reference = [], data = {}, dataType = 'FORMDATA', mFetch = true) => {
  if (process.env.NODE_ENV == 'production') {
    // url = hostObj[baseUrl] + url;
    if (baseUrl) {
      // baseUrl = hostObj[baseUrl];
      baseUrl = process.env.URL + baseUrl;
    }
  }

  url = baseUrl + url;
  if (reference && reference.length > 0) {
    url += "/" + reference.join("/");
  }

  method = method.toUpperCase();

  //格式化data参数
  if (data && typeof data == "object") {
    data = JSON.parse(JSON.stringify(data));
  }

  if (method == 'GET') {
    let dataStr = ''; //数据拼接字符串
    Object.keys(data).forEach(key => {
      if (typeof (data[key]) == "undefined") {
        data[key] = "";
      }
      dataStr += key + '=' + encodeURIComponent(data[key]) + '&';
    })

    if (dataStr !== '') {
      dataStr = dataStr.substr(0, dataStr.lastIndexOf('&'));
      url = url + '?' + dataStr + '&_t=' + new Date().getTime();
    } else {
      url = url + '?_t=' + new Date().getTime();
    }
  }
  if (window.fetch && mFetch) {
    var header_content = {};

    if (dataType && dataType === "XML") {
      header_content = {
        'Accept': 'application/xml',
        'Content-Type': 'application/x-www-form-urlencoded'
      };
    } else if (dataType && dataType === "FORMDATA") {
      header_content = {
        'Accept': 'application/json',
        'Content-Type': 'application/x-www-form-urlencoded'
      };
    } else if (dataType && dataType === "JSON") {
      header_content = {
        'Accept': 'application/json',
        'Content-Type': 'application/json'
      };
    }

    header_content.platform = 'web';
    header_content.sign = key_gen.encode(key_gen.handlerData(method == 'GET' ? url.substring(url.indexOf("?") + 1) : data));
    if (localStorage.token && localStorage.token != "") {
      header_content.token = localStorage.token;
    }
    if (localStorage.user_id && localStorage.user_id != "") {
      header_content.userId = localStorage.user_id;
    }

    let requestConfig = {
      credentials: 'include',
      method: method,
      headers: header_content,
      mode: "cors",
      cache: "force-cache"
    }

    if (method == 'POST') {
      if (dataType === "FORMDATA") {
        Object.defineProperty(requestConfig, 'body', {
          value: initData(data)
        })
      } else if (dataType === "JSON") {
        Object.defineProperty(requestConfig, 'body', {
          value: JSON.stringify(data)
        })
      }
    }

    try {
      const response = await fetch(url, requestConfig);
      if (response.headers.get("token_code") == -2 || response.headers.get("token_code") == -1) {
        Vue.prototype.$Message.config({
          top: 80,
          duration: 3
        });
        Vue.prototype.$Message.info("当前账号已过期，请重新登录！");
        Vue.prototype.$Message = function (str) {
          return;
        }
        setTimeout(function () {
          localStorage.clear();
          location.reload();
          return "";
        }, 3000);
      } else {
        if (dataType && dataType === "XML") {
          const responseJson = await response.text();
          return responseJson
        } else {
          const responseJson = await response.json();
          return responseJson
        }
      }
    } catch (error) {
      Vue.prototype.$Spin.hide();
      const responseJson = {
        errCode: 500,
        msg: "系统异常"
      };
      return responseJson;
      //			throw new Error(error)
    }
  } else {
    return new Promise((resolve, reject) => {
      let requestObj;
      if (window.XMLHttpRequest) {
        requestObj = new XMLHttpRequest();
      } else {
        requestObj = new ActiveXObject;
      }

      let sendData = '';
      if (method == 'POST') {
        if (dataType === "FORMDATA") {
          sendData = initData(data)
        } else if (dataType === "JSON") {
          sendData = JSON.stringify(data)
        }
      }

      requestObj.open(method, url, true);

      if (dataType && dataType === "XML") {
        requestObj.setRequestHeader("Accept", "application/xml");
        requestObj.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      } else if (dataType && dataType === "FORMDATA") {
        requestObj.setRequestHeader("Accept", "application/json");
        requestObj.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      } else if (dataType && dataType === "JSON") {
        requestObj.setRequestHeader("Accept", "application/json");
        requestObj.setRequestHeader("Content-type", "application/json");
      }
      requestObj.setRequestHeader("platform", 'web');
      requestObj.setRequestHeader("sign", key_gen.encode(key_gen.handlerData(method == 'GET' ? url.substring(url.indexOf("?") + 1) : data)));
      requestObj.setRequestHeader("token", localStorage.token || '');
      requestObj.setRequestHeader("userId", localStorage.user_id || '');

      requestObj.send(sendData);

      requestObj.onreadystatechange = () => {
        if (requestObj.readyState == 4) {
          if (requestObj.status == 200) {
            let obj = requestObj.response || requestObj.responseT
            if (typeof obj !== 'object' && obj.indexOf("<?xml") == -1) {
              if (obj.indexOf("<p>") === -1) {
                obj = JSON.parse(obj);
              } else {
                obj = String(obj);
              }
            }
            resolve(obj)
          }
        }
      }
    })
  }
}

function initData(params) {
  var URLSearchParams = require('url-search-params');
  //360浏览器不支持URLSearchParams
  if (typeof URLSearchParams === "function") {
    var formMap = new URLSearchParams();
    for (var key in params) {
      if (typeof (params[key]) == "undefined") {
        params[key] = '';
      }
      formMap.append(key, params[key]);
    }
    return formMap;
  } else {
    return params;
  }
}