import type { ProxyOptions } from 'vite'

type ProxyItem = [string, string]

type ProxyList = ProxyItem[]

type ProxyTargetList = Record<string, ProxyOptions>

const proxyList: ProxyList = [['/api', 'http://localhost:8301/api']]

/**
 * 创建代理配置
 * @param base 项目根路径，必须以“/”结尾，例如“/base/”
 * @param debug 是否开启调试模式，打印请求信息
 */
export function createProxy(base?: string, debug?: boolean) {
  const ret: ProxyTargetList = {}
  for (const [prefix, target] of proxyList) {
    const isHttps = target.startsWith('https://')
    const completePrefix = base ? base.replace(/\/+$/, '') + prefix : prefix

    // https://github.com/http-party/node-http-proxy#options
    ret[completePrefix] = {
      target: target,
      changeOrigin: true,
      ws: true,
      rewrite: (path) => path.replace(new RegExp(`^${completePrefix}`), ''),
      // https is require secure=false
      ...(isHttps ? { secure: false } : {}),
      configure: debug
        ? (proxy, options) => {
            proxy.on('proxyReq', (proxyReq, req, res, options) => {
              console.log(
                '---------------------------------proxyReq----------------------------------',
              )
              console.log(proxyReq.path)
            })

            proxy.on('proxyRes', (proxyRes, req, res) => {
              console.log(
                '---------------------------------proxyRes----------------------------------',
              )
              console.log('RAW Response from the target', JSON.stringify(proxyRes.headers, null, 2))
            })

            proxy.on('error', function (err, req, res) {
              console.log('error : ', err)
            })
          }
        : undefined,
    }
  }
  return ret
}