import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react'
import path from 'node:path'
import { fileURLToPath } from 'node:url'
import fs from 'node:fs'

const __dirname = path.dirname(fileURLToPath(import.meta.url))
const PORT_FILE = '.terminal-server-port'

function getTerminalApiUrl() {
  if (process.env.TERMINAL_API_URL) {
    return process.env.TERMINAL_API_URL
  }
  try {
    if (fs.existsSync(PORT_FILE)) {
      const port = fs.readFileSync(PORT_FILE, 'utf-8').trim()
      return `http://localhost:${port}`
    }
  } catch {}
  return 'http://localhost:3002'
}

export default defineConfig({
  plugins: [react()],
  resolve: {
    alias: {
      '@': path.resolve(__dirname, './src'),
    },
  },
  base: './',
  build: {
    outDir: 'dist',
    emptyOutDir: true,
  },
  define: {
    'process.env': {},
    global: 'globalThis',
  },
  server: {
    proxy: {
      '/api': {
        target: getTerminalApiUrl(),
        changeOrigin: true,
        ws: true,
        rewrite: (path) => path,
      },
    },
  },
})