import { fileURLToPath, URL } from 'node:url'
import react from '@vitejs/plugin-react'
import { defineConfig } from 'vite'

// Local dev proxy target. Defaults to the production backend port (8080).
// Override with BACKEND_TARGET when the loopback 8080 is occupied (e.g. by
// an unrelated process) — e.g. BACKEND_TARGET=http://127.0.0.1:8081.
const backendTarget = process.env.BACKEND_TARGET || 'http://127.0.0.1:8080'

export default defineConfig({
  plugins: [react()],
  resolve: {
    alias: {
      '@': fileURLToPath(new URL('./src', import.meta.url)),
    },
  },
  server: {
    allowedHosts: ['nbd.rainplay.cn', '.rainplay.cn', '.server2.y-dev.tech', 'live.server2.y-dev.tech', 'us.dl.y-dev.tech'],
    proxy: {
      '/api': {
        target: backendTarget,
        changeOrigin: true,
      },
      '/hls': {
        target: backendTarget,
        changeOrigin: true,
        // Default "same-origin" strips the Referer. /hls/<key>/<label>/… carries the
        // quality label, which is Chinese by default ("原画"), and a stripped Referer
        // makes some proxies drop the rate-limited request. Not needed for the other
        // routes, which only carry numeric ids.
        referrerPolicy: 'origin-when-cross-origin',
      },
      '/docs': {
        target: backendTarget,
        changeOrigin: true,
      },
      '/openapi.json': {
        target: backendTarget,
        changeOrigin: true,
      },
      '/redoc': {
        target: backendTarget,
        changeOrigin: true,
      },
    },
  },
})