import { defineConfig } from 'vite'
import react, { reactCompilerPreset } from '@vitejs/plugin-react'
import babel from '@rolldown/plugin-babel'

// Backend origin to proxy /auth and /api to in dev (default local backend).
const BACKEND = process.env.BACKEND_URL ?? 'http://localhost:3001'

// https://vite.dev/config/
export default defineConfig({
  plugins: [
    react(),
    babel({ presets: [reactCompilerPreset()] })
  ],
  server: {
    allowedHosts: ['.trycloudflare.com'],
    // Same-origin proxy: the browser only ever talks to the Vite origin, so the
    // session cookie stays first-party (works through tunnels too).
    proxy: {
      '/auth': { target: BACKEND, changeOrigin: true },
      '/api': { target: BACKEND, changeOrigin: true },
      '/health': { target: BACKEND, changeOrigin: true },
      // Lets the Cloud Run scanner job reach the local backend's secret-guarded
      // callback through the same tunnel (SCAN_CALLBACK_URL = the tunnel URL).
      '/internal': { target: BACKEND, changeOrigin: true },
    },
  },
})