import { execFileSync } from 'node:child_process'
import { defineConfig, loadEnv } from 'vite'
import uni from '@dcloudio/vite-plugin-uni'

const normalizeEnvUrl = (value: string | undefined, fallback: string) => {
  const normalized = value?.trim()
  return normalized || fallback
}

const resolveGitCommit = () => {
  try {
    return execFileSync('git', ['rev-parse', '--short=12', 'HEAD'], {
      encoding: 'utf8'
    }).trim()
  } catch {
    return 'unknown'
  }
}

const createBuildTimestamp = () => (
  new Date().toISOString().replace(/[-:.TZ]/g, '').slice(0, 14)
)

export default defineConfig(({ mode }) => {
  const env = loadEnv(mode, process.cwd(), '')
  const gitCommit = normalizeEnvUrl(env.VITE_APP_GIT_COMMIT, resolveGitCommit())
  const buildId = normalizeEnvUrl(
    env.VITE_APP_BUILD_ID,
    `${gitCommit}-${createBuildTimestamp()}`
  )
  const buildPlatform = process.env.UNI_PLATFORM === 'mp-weixin' ? 'mp-weixin' : 'h5'
  const appApiProxyTarget = normalizeEnvUrl(env.DEV_PROXY_APP_API_TARGET, 'http://localhost:3001')
  const h5SdkProxyTarget = normalizeEnvUrl(env.DEV_PROXY_H5_SDK_TARGET, appApiProxyTarget)
  const sdkProxyTarget = normalizeEnvUrl(env.DEV_PROXY_SDK_TARGET, appApiProxyTarget)
  const museumAssetsProxyTarget = normalizeEnvUrl(env.DEV_PROXY_MUSEUM_ASSETS_TARGET, 'http://localhost:9000')
  const minioProxyTarget = normalizeEnvUrl(env.DEV_PROXY_MINIO_TARGET, appApiProxyTarget)
  const audioProxyTarget = normalizeEnvUrl(env.DEV_PROXY_AUDIO_TARGET, 'http://localhost:19000')

  return {
    base: normalizeEnvUrl(env.VITE_APP_PUBLIC_BASE, '/'),
    plugins: [uni()],
    define: {
      __APP_BUILD_ID__: JSON.stringify(buildId),
      __APP_GIT_COMMIT__: JSON.stringify(gitCommit),
      __APP_BUILD_PLATFORM__: JSON.stringify(buildPlatform)
    },
    server: {
      host: '0.0.0.0',
      proxy: {
        '/app-api': {
          target: appApiProxyTarget,
          changeOrigin: true
        },
        '/h5-sdk': {
          target: h5SdkProxyTarget,
          changeOrigin: true
        },
        '/sdk': {
          target: sdkProxyTarget,
          changeOrigin: true
        },
        '/museum-assets': {
          target: museumAssetsProxyTarget,
          changeOrigin: true
        },
        '/minio': {
          target: minioProxyTarget,
          changeOrigin: true
        },
        '/nhm/audio': {
          target: audioProxyTarget,
          changeOrigin: true
        }
      }
    },
    resolve: {
      alias: {
        '@': '/src'
      }
    },
    optimizeDeps: {
      include: ['three']
    },
    build: {
      rollupOptions: {
        output: {
          manualChunks: {
            three: ['three']
          }
        }
      }
    }
  }
})