import { defineConfig } from 'vite'
import uni from '@dcloudio/vite-plugin-uni'

export default defineConfig({
  plugins: [
    uni(),
    {
      // 强制配置 proxy:uniapp vite-plugin 默认代理会覆盖 vite.config.ts 的 server.proxy
      // 移动端 uniapp 通过 /dev-api 访问后端,需要把 /dev-api 代理到 9225
      name: 'force-dev-api-proxy',
      configureServer(server) {
        server.middlewares.use('/dev-api', (req, res, next) => {
          const url = req.url || ''
          const opts = {
            hostname: '127.0.0.1',
            port: 9225,
            path: url,
            method: req.method,
            headers: req.headers
          }
          const proxyReq = require('http').request(opts, (proxyRes) => {
            res.writeHead(proxyRes.statusCode || 502, proxyRes.headers)
            proxyRes.pipe(res, { end: true })
          })
          proxyReq.on('error', (err) => {
            res.statusCode = 502
            res.end('Proxy error: ' + err.message)
          })
          req.pipe(proxyReq, { end: true })
        })
      },
      configurePreviewServer(server) {
        server.middlewares.use('/dev-api', (req, res, next) => {
          const url = req.url || ''
          const opts = {
            hostname: '127.0.0.1',
            port: 9225,
            path: url,
            method: req.method,
            headers: req.headers
          }
          const proxyReq = require('http').request(opts, (proxyRes) => {
            res.writeHead(proxyRes.statusCode || 502, proxyRes.headers)
            proxyRes.pipe(res, { end: true })
          })
          proxyReq.on('error', (err) => {
            res.statusCode = 502
            res.end('Proxy error: ' + err.message)
          })
          req.pipe(proxyReq, { end: true })
        })
      }
    }
  ],
  server: {
    host: '0.0.0.0',
    port: 9000
  },
  preview: {
    host: '0.0.0.0',
    port: 9000
  },
  css: {
    preprocessorOptions: {
      scss: {
        additionalData: `@import "@/static/styles/variables.scss";`
      }
    }
  }
})