import { defineConfig } from 'vitest/config'

// Build of the Blog Editor custom element (D-16): one ES module entry,
// assets/src/blogeditor/index.ts, loaded by the admin SPA as a module script.
// It is built like a library entry (exports kept, fixed output names with no
// content hash; cabana appends ?v=<sha256 prefix> itself) but through the
// application pipeline, because Vite's library mode never minifies
// whitespace in ES output. The bundle and its stylesheet are committed under
// assets/dist and embedded through admin.go; scripts/check-dist.sh fails
// when they are stale.
export default defineConfig({
  build: {
    outDir: 'assets/dist',
    emptyOutDir: true,
    target: 'es2022',
    modulePreload: false,
    copyPublicDir: false,
    reportCompressedSize: true,
    rollupOptions: {
      input: 'assets/src/blogeditor/index.ts',
      preserveEntrySignatures: 'exports-only',
      output: {
        format: 'es',
        entryFileNames: 'blogeditor.js',
        chunkFileNames: 'blogeditor-[name].js',
        assetFileNames: 'blogeditor[extname]',
        inlineDynamicImports: true,
      },
    },
  },
  test: {
    environment: 'happy-dom',
    include: ['tests/**/*.test.ts'],
    // Tests never reach the network: happy-dom must not load the pages of
    // iframes (the preview frame's srcdoc holds test payloads with remote
    // URLs).
    environmentOptions: {
      happyDOM: { settings: { disableIframePageLoading: true } },
    },
  },
})