import config from '@/config'
import { getToken } from '@/utils/auth'
import errorCode from '@/utils/errorCode'
import { toast, showConfirm, tansParams } from '@/utils/common'
import { RequestConfig, ResponseData } from '@/types/request'
import useUserStore from '@/store/modules/user'

let timeout = 10000
const baseUrl = config.baseUrl

const request = <T>(config: RequestConfig): Promise<ResponseData<T>> => {
  const metaHeaders = config.headers || {}
  // 是否需要设置 token
  const isToken = metaHeaders.isToken === false
  const silentAuth = metaHeaders.silentAuth === true
  config.header = config.header || {}
  if (getToken() && !isToken) {
    config.header['Authorization'] = 'Bearer ' + getToken()
  }
  // get请求映射params参数
  if (config.params) {
    let url = config.url + '?' + tansParams(config.params)
    url = url.slice(0, -1)
    config.url = url
  }
  return new Promise((resolve, reject) => {
    uni.request({
      method: config.method || 'GET',
      timeout: config.timeout || timeout,
      url: (config.baseUrl || baseUrl) + config.url,
      data: config.data,
      header: config.header,
      dataType: 'json'
    }).then(response => {
      /* let [error, res] = response
       if (error) {
         toast('后端接口连接异常')
         reject('后端接口连接异常')
         return
       } */
      const res = response
      const data: ResponseData<T> = res.data as ResponseData<T>
      const code = data.code || 200
      // @ts-ignore
      const msg: string = errorCode[code] || data.msg || errorCode['default']
      if (code === 401) {
        const authError = { code: 401, msg: '无效的会话，或者会话已过期，请重新登录。' }
        if (!silentAuth) {
          showConfirm('登录状态已过期，您可以继续留在该页面，或者重新登录?').then(res => {
            if (res.confirm) {
              useUserStore().logOut().then(res => {
                uni.reLaunch({ url: '/pages/login' })
              })
            }
          })
        }
        return reject(silentAuth ? authError : authError.msg)
      } else if (code === 500) {
        toast(msg)
        return reject('500')
      } else if (code !== 200) {
        toast(msg)
        return reject(code)
      }
      resolve(data)
    })
      .catch(error => {
        let { message } = error
        if (message === 'Network Error') {
          message = '后端接口连接异常'
        } else if (message.includes('timeout')) {
          message = '系统接口请求超时'
        } else if (message.includes('Request failed with status code')) {
          message = '系统接口' + message.substr(message.length - 3) + '异常'
        }
        if (!silentAuth) {
          toast(message)
        }
        reject(error)
      })
  })
}

export function postAction(url: string, data?: any, isToken: boolean = true) {
  return request({ data, url, method: 'POST', headers: { isToken }, })
}
export function getAction(url: string, params?: any, isToken: boolean = true) {
  return request({ params, url, method: 'GET', headers: { isToken }, })
}
export function putAction(url: string, data?: any, isToken: boolean = true) {
  return request({ data, url, method: 'PUT', headers: { isToken }, })
}
export function deleteAction(url: string, data?: any, isToken: boolean = true) {
  return request({ data, url, method: 'DELETE', headers: { isToken }, })
}

export function downloadAction(url: string, data: any = {}, filename: string = 'download.xlsx') {
  const token = getToken()
  const fullUrl = baseUrl + url
  // #ifdef H5
  return new Promise((resolve, reject) => {
    const xhr = new XMLHttpRequest()
    xhr.open('POST', fullUrl, true)
    xhr.responseType = 'blob'
    xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded')
    if (token) {
      xhr.setRequestHeader('Authorization', 'Bearer ' + token)
    }
    xhr.onload = () => {
      if (xhr.status >= 200 && xhr.status < 300) {
        const blob = xhr.response
        const link = document.createElement('a')
        link.href = window.URL.createObjectURL(blob)
        link.download = filename
        link.click()
        window.URL.revokeObjectURL(link.href)
        resolve(blob)
      } else {
        toast('下载文件出现错误')
        reject(xhr.status)
      }
    }
    xhr.onerror = () => {
      toast('下载文件出现错误')
      reject(new Error('download error'))
    }
    xhr.send(tansParams(data))
  })
  // #endif
  // #ifndef H5
  return new Promise((resolve, reject) => {
    uni.request({
      method: 'POST',
      url: fullUrl,
      data: tansParams(data),
      responseType: 'arraybuffer',
      header: {
        'Content-Type': 'application/x-www-form-urlencoded',
        ...(token ? { Authorization: 'Bearer ' + token } : {})
      },
      success: (res: any) => {
        if (res.statusCode !== 200) {
          toast('下载文件出现错误')
          reject(res.statusCode)
          return
        }
        // #ifdef MP-WEIXIN
        const filePath = `${wx.env.USER_DATA_PATH}/${filename}`
        uni.getFileSystemManager().writeFile({
          filePath,
          data: res.data,
          success: () => {
            uni.openDocument({
              filePath,
              fileType: 'xlsx',
              showMenu: true,
              success: resolve,
              fail: reject
            })
          },
          fail: reject
        })
        // #endif
        // #ifndef MP-WEIXIN
        resolve(res.data)
        // #endif
      },
      fail: (err) => {
        toast('下载文件出现错误')
        reject(err)
      }
    })
  })
  // #endif
}

export default request
