import { test } from "node:test";
import assert from "node:assert/strict";
import { promises as fs } from "node:fs";
import path from "node:path";
import os from "node:os";
import { loadRegisteredCapabilities } from "../loader.js";
import { getCapability, listCapabilities } from "../registry.js";

/**
 * Task #242 (B1) — architect review smoke test:
 * 验证 boot loader 真的能扫到 _registered 目录里的 manifest 文件并把它们注册
 * 进 in-memory registry。否则即便 boot 调了 loadRegisteredCapabilities,真
 * capability 落地后也不会被自动登记 — 整个生命周期机制就废了。
 */
void test("capability/loader: scans manifest files and auto-registers them", async () => {
  // Make a sandbox dir with two valid manifests + 1 bogus file.
  const tmp = await fs.mkdtemp(path.join(os.tmpdir(), "cap-loader-test-"));
  try {
    const m1 = path.join(tmp, "alpha.manifest.mjs");
    const m2 = path.join(tmp, "beta.manifest.mjs");
    const ignored = path.join(tmp, "readme.txt");
    await fs.writeFile(
      m1,
      `export default {
        id: "cap_loader_test_alpha",
        name: "loader_test_alpha",
        domain: "test",
        boundNetworkName: null,
        manifestVersion: 1,
      };\n`,
    );
    await fs.writeFile(
      m2,
      `export default {
        id: "cap_loader_test_beta",
        name: "loader_test_beta",
        domain: "test",
        boundNetworkName: null,
        manifestVersion: 1,
      };\n`,
    );
    await fs.writeFile(ignored, "not a manifest\n");

    const result = await loadRegisteredCapabilities(tmp);

    assert.equal(result.errors.length, 0, `unexpected errors: ${JSON.stringify(result.errors)}`);
    assert.deepEqual(
      [...result.loaded].sort(),
      ["cap_loader_test_alpha", "cap_loader_test_beta"],
      "both manifests should be loaded; the .txt file should be ignored",
    );

    // Architect's real concern: did the manifests actually land in the
    // in-memory registry? Boot logging "loaded" without actually
    // registering would still ship a broken layer.
    const alpha = getCapability("cap_loader_test_alpha");
    const beta = getCapability("cap_loader_test_beta");
    assert.ok(alpha, "alpha capability missing from registry after boot scan");
    assert.ok(beta, "beta capability missing from registry after boot scan");
    assert.equal(alpha!.manifest.name, "loader_test_alpha");
    assert.equal(beta!.manifest.name, "loader_test_beta");

    // Sanity: listCapabilities returns at least these two.
    const ids = listCapabilities().map((m) => m.id);
    assert.ok(ids.includes("cap_loader_test_alpha"));
    assert.ok(ids.includes("cap_loader_test_beta"));
  } finally {
    await fs.rm(tmp, { recursive: true, force: true });
  }
});

void test("capability/loader: DOATLAS_CAPABILITY_LAYER_ENABLED=false short-circuits", async () => {
  const prev = process.env["DOATLAS_CAPABILITY_LAYER_ENABLED"];
  process.env["DOATLAS_CAPABILITY_LAYER_ENABLED"] = "false";
  try {
    const result = await loadRegisteredCapabilities("/this/path/does/not/exist");
    assert.deepEqual(result, { loaded: [], errors: [] });
  } finally {
    if (prev === undefined) delete process.env["DOATLAS_CAPABILITY_LAYER_ENABLED"];
    else process.env["DOATLAS_CAPABILITY_LAYER_ENABLED"] = prev;
  }
});