import process from 'node:process';

import { defineConfig } from '@vben/vite-config';

const DEFAULT_DEV_SERVER_PORT = '5999';
const DEFAULT_DEV_API_TARGET = 'http://localhost:5667';

function resolveCliPort(argv = process.argv) {
  for (let index = 0; index < argv.length; index += 1) {
    const arg = argv[index];

    if (arg === '--port') {
      return argv[index + 1];
    }

    if (arg?.startsWith('--port=')) {
      return arg.slice('--port='.length);
    }
  }

  return undefined;
}

function resolveDevServerCacheDir(
  port = resolveCliPort() || process.env.VITE_PORT || DEFAULT_DEV_SERVER_PORT,
) {
  const normalizedPort = /^\d+$/.test(port ?? '')
    ? port
    : DEFAULT_DEV_SERVER_PORT;
  return `node_modules/.vite/web-antdv-next-${normalizedPort}`;
}

function resolveDevApiTarget(env = process.env) {
  return env.VITE_DEV_API_TARGET || DEFAULT_DEV_API_TARGET;
}

export default defineConfig(async () => {
  const devApiTarget = resolveDevApiTarget();

  return {
    application: {},
    vite: {
      cacheDir: resolveDevServerCacheDir(),
      optimizeDeps: {
        include: ['ant-design-x-vue'],
      },
      server: {
        // Chromium 会阻止 6000 等不安全端口。5999 被占用时直接失败，避免 Vite 自动递增到不可访问端口。
        strictPort: true,
        proxy: {
          '/api': {
            changeOrigin: true,
            // 代理到 .NET 后端 BuildFlow.Host
            target: devApiTarget,
            ws: true,
          },
          // SignalR Hub（聊天实时通信）：与 /api 同后端，WebSocket 升级需 ws:true
          '/hubs': {
            changeOrigin: true,
            target: devApiTarget,
            ws: true,
          },
        },
      },
    },
  };
});

export { resolveDevApiTarget, resolveDevServerCacheDir };