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import axios from 'axios';
import config from './config';

const {ERR_OK, BASE_URL_PRO, BASE_URL_DEV} = config;

const baseURL = process.env.NODE_ENV === 'development'
  ? BASE_URL_DEV
  : BASE_URL_PRO;

/**
 * Create an Axios Client with defaults
 */
const client = axios.create({
  // `baseURL` will be prepended to `url` unless `url` is absolute. It can be
  // convenient to set `baseURL` for an instance of axios to pass relative URLs to
  // methods of that instance.
  baseURL: baseURL,
  // `timeout` specifies the number of milliseconds before the request times out.
  // If the request takes longer than `timeout`, the request will be aborted.
  // timeout： 5000,
  headers: {
    // 'content-type': 'application/json'
  }
});

/**
 * Request Wrapper with default success/error actions
 */
const request = function (options) {
  // 数据请求成功
  const onSuccess = function (response) {
    console.debug('Request Successful!', response);
    return response.data;
  };

  // 数据请求失败
  const onError = function (error) {
    console.error('Request Failed:', error.config);

    if (error.response) {
      // Request was made but server responded with something other than 2xx
      console.error('Status:', error.response.status);
      console.error('Data:', error.response.data);
      console.error('Headers:', error.response.headers);
    } else {
      // Something else happened while setting up the request triggered the error
      console.error('Error Message:', error.message);
    }

    return Promise.reject(error.response || error.message);
  };

  // 统一处理后端错误
  const onPrompt = function (response) {
    if (response.retCode === ERR_OK) {
      return response;
    } else {
      // TODO:
    }
  };

  return client(options)
    .then(onSuccess)
    .then(onPrompt)
    .catch(onError);
};

export default request;