import { defineConfig } from 'vite';
import react from '@vitejs/plugin-react';
import path from 'path';
import fs from 'fs';

// Read the canonical version from /VERSION (repo root, mounted at /app/VERSION in Docker).
// Falls back to the VITE_APP_VERSION env var so production Docker builds can pass it
// as a build arg (--build-arg VITE_APP_VERSION=$(cat VERSION)) without needing the file.
function readAppVersion(): string {
  try {
    return fs.readFileSync(path.resolve(__dirname, 'VERSION'), 'utf-8').trim();
  } catch {
    return process.env.VITE_APP_VERSION ?? 'dev';
  }
}

const APP_VERSION = readAppVersion();

export default defineConfig({
  plugins: [react()],
  define: {
    // Injected at compile time — use __APP_VERSION__ anywhere in frontend source.
    __APP_VERSION__: JSON.stringify(APP_VERSION),
  },
  resolve: {
    alias: {
      '@': path.resolve(__dirname, './src'),
    },
  },
  server: {
    allowedHosts: ['app.hoaledgeriq.com'],
    host: '0.0.0.0',
    port: 5173,
    proxy: {
      '/api': {
        target: 'http://backend:3000',
        changeOrigin: true,
      },
    },
  },
});