import { defineConfig } from 'vite';
import preact from '@preact/preset-vite';
import legacy from '@vitejs/plugin-legacy';
import { resolve } from 'node:path';

// The dev-server proxy target — same default (3000) as the server's own
// `process.env.PORT ?? 3000` in server/src/index.ts. Override with
// `WUTZ_SERVER_PORT` when running `dev:server` on a non-default port, e.g.:
//   PORT=4000 pnpm dev:server
//   WUTZ_SERVER_PORT=4000 pnpm dev:client
const serverTarget = `http://localhost:${process.env.WUTZ_SERVER_PORT ?? 3000}`;

export default defineConfig({
  plugins: [
    preact(),
    legacy({
      targets: ['ios >= 12', 'safari >= 12'],
      modernPolyfills: true,
      renderLegacyChunks: true,
    }),
  ],
  build: {
    target: 'es2017',
    rollupOptions: {
      input: {
        main: resolve(__dirname, 'index.html'),
        admin: resolve(__dirname, 'admin.html'),
      },
    },
  },
  server: {
    port: 5173,
    proxy: {
      '/api': serverTarget,
      '/admin': serverTarget,
      '/healthz': serverTarget,
    },
  },
});