import { execFileSync } from 'node:child_process';
import { readFileSync } from 'node:fs';
import { fileURLToPath } from 'node:url';
import react from '@vitejs/plugin-react';
import { defineConfig } from 'vitest/config';

const webRoot = fileURLToPath(new URL('.', import.meta.url));
const webPackage = JSON.parse(readFileSync(new URL('./package.json', import.meta.url), 'utf8')) as { version: string };

function gitValue(...args: string[]): string {
  try {
    return execFileSync('git', args, { cwd: webRoot, encoding: 'utf8', stdio: ['ignore', 'pipe', 'ignore'] }).trim() || 'unknown';
  } catch {
    return 'unknown';
  }
}

const buildInfo = {
  frontendVersion: webPackage.version,
  frontendCommit: process.env.WEBDROP_FRONTEND_COMMIT ?? gitValue('rev-parse', 'HEAD'),
  frontendTag: process.env.WEBDROP_FRONTEND_TAG ?? gitValue('describe', '--tags', '--exact-match', 'HEAD'),
  backendCommit: process.env.WEBDROP_BACKEND_COMMIT ?? gitValue('rev-parse', 'HEAD'),
  backendTag: process.env.WEBDROP_BACKEND_TAG ?? gitValue('describe', '--tags', '--exact-match', 'HEAD'),
  builtAt: process.env.WEBDROP_BUILD_TIME ?? new Date().toISOString(),
};

export default defineConfig({
  plugins: [react()],
  define: { __WEBDROP_BUILD_INFO__: JSON.stringify(buildInfo) },
  resolve: {
    alias: {
      '@': fileURLToPath(new URL('./src', import.meta.url)),
      '@webdrop/core': fileURLToPath(new URL('../packages/core/src/index.ts', import.meta.url)),
    },
  },
  build: { target: 'es2022', sourcemap: false },
  server: { proxy: { '/api/v1': { target: process.env.WEBDROP_DEV_API_TARGET ?? 'http://127.0.0.1:5000', ws: true } } },
  test: { environment: 'node' },
});