import { readFileSync } from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';

import vue from '@vitejs/plugin-vue';
import { parse } from 'dotenv';
import { defineConfig } from 'vite';

const webDirectory = path.dirname(fileURLToPath(import.meta.url));
const developmentEnvFile = path.resolve(webDirectory, '../deploy/env/development/web.env.local');

function readDevelopmentPublicEnv() {
  if (process.env.NODE_ENV === 'production') return {};
  try {
    return Object.fromEntries(
      Object.entries(parse(readFileSync(developmentEnvFile))).filter(([key]) =>
        key.startsWith('VITE_'),
      ),
    );
  } catch (error) {
    if ((error as NodeJS.ErrnoException).code === 'ENOENT') return {};
    throw error;
  }
}

const publicEnv = readDevelopmentPublicEnv();

export default defineConfig({
  plugins: [vue()],
  define: Object.fromEntries(
    Object.entries(publicEnv).map(([key, value]) => [
      `import.meta.env.${key}`,
      JSON.stringify(value),
    ]),
  ),
  server: {
    host: '127.0.0.1',
    port: 5173,
    strictPort: true,
    proxy: {
      // 本地浏览器始终请求同源 /api，由 Vite 转发到 NestJS，避免开发环境放宽 CORS。
      '/api': {
        target: 'http://127.0.0.1:3000',
        changeOrigin: false,
      },
    },
  },
});