import { defineConfig } from "vite";
import tsConfigPaths from "vite-tsconfig-paths";
import { tanstackStart } from "@tanstack/react-start/plugin/vite";
import react from "@vitejs/plugin-react";
import tailwindcss from "@tailwindcss/vite";
import path from "node:path";
import { fileURLToPath } from "node:url";

// 兼容 Node/Bun 双运行时的项目根定位
const here = path.dirname(fileURLToPath(import.meta.url));

export default defineConfig({
  server: { port: 3311 },
  build: {
    // Bun 内置模块（Bun.sql）不打包，生产用 bun 运行时启动 dist/server/server.js
    rolldownOptions: { external: ["bun"] },
  },
  // 客户端环境用 stub 解析 "bun"（db 模块经 server fn 依赖链进入客户端图，
  // 动态 import("bun") 只在服务端执行）
  environments: {
    client: {
      resolve: {
        alias: [{ find: /^bun$/, replacement: path.resolve(here, "src/stubs/bun-client.ts") }],
      },
    },
  },
  plugins: [
    tsConfigPaths({ projects: ["./tsconfig.json"] }),
    tailwindcss(),
    tanstackStart(),
    react(),
  ],
});