import react from "@vitejs/plugin-react";
import { compression } from "vite-plugin-compression2";
import { defineConfig } from "vite";

export default defineConfig(({ command }) => {
  // dev 模式下默认把 /api 代理到线上电商后端，本地 `npm run dev` 即可直接登录/生成。
  // 想连本地或 SSH 隧道的后端时，用环境变量覆盖：
  //   $env:OMNIAI_DEV_API_TARGET="http://127.0.0.1:3601"; npm run dev
  // 仅 dev 代理用途，不会打进生产构建产物。
  const devApiTarget =
    process.env.OMNIAI_DEV_API_TARGET?.trim() ||
    (command === "serve" ? "https://omniai.com.cn" : "");
  const apiProxy = devApiTarget
    ? {
        "/api": {
          target: devApiTarget,
          changeOrigin: true,
        },
      }
    : undefined;

  return {
    plugins: [
      react(),
      compression({ algorithms: ["gzip", "brotliCompress"], threshold: 1024 }),
    ],
    server: {
      port: 5173,
      host: "127.0.0.1",
      ...(apiProxy ? { proxy: apiProxy } : {}),
    },
    preview: {
      port: 4174,
      host: "127.0.0.1",
    },
    ...(command === "build" ? { esbuild: { drop: ["console", "debugger"] } } : {}),
    build: {
      sourcemap: false,
      rollupOptions: {
        output: {
          manualChunks(id: string) {
            if (id.includes("node_modules/react") || id.includes("node_modules/react-dom") || id.includes("node_modules/scheduler")) {
              return "vendor-react";
            }
            if (id.includes("node_modules/@ant-design") || id.includes("node_modules/antd") || id.includes("node_modules/rc-")) {
              return "vendor-antd";
            }
          },
        },
      },
    },
  };
});