import { fileURLToPath } from 'node:url';
import tailwindcss from '@tailwindcss/vite';
import react from '@vitejs/plugin-react';
import { defineConfig } from 'vite';
import { viteSingleFile } from 'vite-plugin-singlefile';

// One file out. The site record names each file by path, and the page HTML
// caches for minutes, so a build split across hashed assets would leave a
// visitor holding old HTML asking for a script the record no longer names.
// A self-contained document cannot fall out of step with itself.

// Where `npm run dev` sends the two routes the account's own site answers:
// the DID the hostname publishes, and the blobs the pack reader opens. The
// dev server has neither, and its SPA fallback would answer a blob request
// with the page itself.
const PDS_URL = process.env.PDS_URL || 'http://localhost:2471';

export default defineConfig({
  plugins: [react(), tailwindcss(), viteSingleFile()],
  server: {
    // The dev server answers only the hosts it is told to, localhost by
    // default. A phone on the same tailnet reaches it by the machine's
    // tailnet name, which goes here.
    allowedHosts: process.env.VITE_ALLOWED_HOSTS
      ? process.env.VITE_ALLOWED_HOSTS.split(',')
      : undefined,
    proxy: {
      '/.well-known': PDS_URL,
      '/.blobs': PDS_URL,
      // The account pages the settings link opens are served from the
      // account's own site; the dev server is on a port of its own, so it
      // proxies them.
      '/account': PDS_URL,
    },
  },
  resolve: {
    alias: [
      {
        find: /^#\/(.*)/,
        replacement: `${fileURLToPath(new URL('./src', import.meta.url))}/$1`,
      },
    ],
  },
  build: {
    target: 'es2022',
    assetsInlineLimit: 100000000,
    chunkSizeWarningLimit: 4096,
    cssCodeSplit: false,
    reportCompressedSize: false,
  },
});