// 打包 server:工作区包(@umt/*)以源码内联,npm 依赖保持 external 运行时从 node_modules 加载。
// external 依赖必须在本包 package.json 的 dependencies 里声明(工作区包的运行时依赖也要在此重复声明),
// 否则运行时解析不到,构建直接报错。
import { readFileSync } from "node:fs";
import { builtinModules } from "node:module";
import { build } from "esbuild";

const pkg = JSON.parse(readFileSync(new URL("../package.json", import.meta.url), "utf8"));
const deps = new Set(Object.keys(pkg.dependencies ?? {}));
const builtins = new Set(builtinModules);
const pkgName = (p) => (p.startsWith("@") ? p.split("/").slice(0, 2).join("/") : p.split("/")[0]);

await build({
  entryPoints: ["src/main.ts"],
  outfile: "dist/main.js",
  bundle: true,
  platform: "node",
  target: "node24",
  format: "esm",
  sourcemap: true,
  logLevel: "info",
  plugins: [
    {
      name: "external-npm",
      setup(b) {
        b.onResolve({ filter: /^[^./]/ }, (args) => {
          if (args.path.startsWith("node:") || builtins.has(args.path)) return { path: args.path, external: true };
          const name = pkgName(args.path);
          if (name.startsWith("@umt/")) return undefined;
          if (!deps.has(name)) {
            return {
              errors: [
                { text: `运行时依赖 ${name} 未在 apps/server/package.json dependencies 中声明(来自 ${args.importer})` },
              ],
            };
          }
          return { path: args.path, external: true };
        });
      },
    },
  ],
});