import { fileURLToPath, URL } from 'node:url';
import { defineConfig } from 'vite';
import vue from '@vitejs/plugin-vue';

export default defineConfig(() => {
  const testBuild = process.env.PORTFOLIO_TEST_BUILD === '1';
  const testTokenDigest = process.env.PORTFOLIO_TEST_TOKEN_DIGEST ?? '';
  if (testBuild && !/^[a-f0-9]{64}$/u.test(testTokenDigest)) {
    throw new Error('Authenticated test builds require one SHA-256 token digest.');
  }
  if (!testBuild && testTokenDigest !== '') {
    throw new Error('A test token digest cannot influence a production build.');
  }

  return {
    plugins: [vue()],
    define: {
      __PORTFOLIO_TEST_BUILD__: JSON.stringify(testBuild),
      __PORTFOLIO_TEST_TOKEN_DIGEST__: JSON.stringify(testBuild ? testTokenDigest : ''),
    },
    build: {
      sourcemap: false,
    },
    resolve: {
      alias: { '@': fileURLToPath(new URL('./src', import.meta.url)) },
    },
  };
});