import { execSync } from 'node:child_process'
import { defineConfig } from 'vite'
import { svelte } from '@sveltejs/vite-plugin-svelte'
import { viteSingleFile } from 'vite-plugin-singlefile'

// https://vite.dev/config/
// Bake the commit hash into the bundle at build time so a deployed app can
// report exactly which commit produced it (logged via console.info at startup).
// CI sets VITE_COMMIT_HASH=${{ github.sha }}; local builds fall back to git HEAD.
function getCommitHash() {
  if (process.env.VITE_COMMIT_HASH) return process.env.VITE_COMMIT_HASH
  try {
    return execSync('git rev-parse HEAD').toString().trim()
  } catch {
    return 'unknown'
  }
}

export default defineConfig(({ command }) => ({
  define: {
    __WEATHER_COMMIT__: JSON.stringify(getCommitHash()),
  },
  plugins: [
    svelte(),
    ...(command === 'build'
      ? [viteSingleFile({
          inlineStyles: true,
          inlineScripts: true,
          removeUnusedCss: true,
          removeViteModuleLoader: true,
        })]
      : []),
  ],
  build: {
    target: 'esnext',
    minify: false,
    rollupOptions: {
      treeshake: {
        moduleSideEffects: true,
        annotations: false,
      },
    },
  },
  preview: {
    allowedHosts: ["dev.thecookiejar.me"]
  },
  test: {
    environment: 'jsdom',
    globals: true,
    setupFiles: ['./tests/setup.js'],
    include: ['src/**/*.test.js', 'tests/**/*.test.js'],
  },
}))