import { fileURLToPath, URL } from 'node:url'

import vue from '@vitejs/plugin-vue'
import { defineConfig, loadEnv } from 'vite'

function normalizeBasePath(value: string | undefined) {
  const trimmed = value?.trim()
  if (!trimmed || trimmed === '/') {
    return '/'
  }
  return `/${trimmed.replace(/^\/+|\/+$/g, '')}/`
}

export default defineConfig(({ mode }) => {
  const env = loadEnv(mode, process.cwd(), '')
  const appBase = normalizeBasePath(env.VITE_APP_BASE)
  const devApiOrigin = env.VITE_DEV_API_ORIGIN?.trim() || 'http://127.0.0.1:8080'

  return {
    base: appBase,
    plugins: [vue()],
    resolve: {
      alias: {
        '@': fileURLToPath(new URL('./src', import.meta.url)),
      },
    },
    server: {
      port: 5173,
      host: '0.0.0.0',
      proxy: {
        '/api': {
          target: devApiOrigin,
          changeOrigin: true,
          configure: (proxy) => {
            proxy.on('proxyRes', (proxyRes) => {
              proxyRes.headers['x-accel-buffering'] = 'no'
              proxyRes.headers['cache-control'] = 'no-cache'
            })
          },
        },
      },
    },
  }
})