import path from "path"
import { execSync } from "child_process"
import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react'

function getCommitHash(): string {
  // Docker builds pass VITE_COMMIT_HASH as an env var
  if (process.env.VITE_COMMIT_HASH) return process.env.VITE_COMMIT_HASH;
  try {
    return execSync('git rev-parse --short HEAD', { encoding: 'utf-8' }).trim();
  } catch {
    return 'unknown';
  }
}

export default defineConfig({
  plugins: [react()],
  define: {
    __APP_VERSION__: JSON.stringify(process.env.npm_package_version ?? 'unknown'),
    __COMMIT_HASH__: JSON.stringify(getCommitHash()),
  },
  resolve: {
    alias: {
      "@": path.resolve(__dirname, "./src"),
    },
  },
  build: {
    outDir: 'dist',
    sourcemap: true,
  },
  server: {
    proxy: {
      '/api': {
        target: 'http://localhost:8000',
        changeOrigin: true,
      },
    },
    watch: {
      usePolling: true,
    },
  },
})