import { mkdir, mkdtemp, rm, writeFile } from "node:fs/promises";
import { tmpdir } from "node:os";
import { join } from "node:path";
import { afterEach, describe, expect, it } from "vitest";
import {
  CURATED_SKILL_IDS,
  CURATED_SKILL_NAMES,
  CURATED_SKILL_PLUGIN_NAME,
  validateCuratedSkillPlugin,
} from "../../src/agent/curatedSkills.js";

describe("validateCuratedSkillPlugin", () => {
  const roots: string[] = [];

  afterEach(async () => {
    await Promise.all(roots.splice(0).map((root) => rm(root, { recursive: true, force: true })));
  });

  it("accepts exactly the release-owned plugin and returns qualified skill ids", async () => {
    const root = await skillPluginFixture();

    await expect(validateCuratedSkillPlugin(root)).resolves.toEqual({
      root,
      skillIds: CURATED_SKILL_IDS,
    });
  });

  it("fails closed when a curated skill is absent from the release", async () => {
    const root = await skillPluginFixture();
    await rm(join(root, "skills", "outline"), { recursive: true });

    await expect(validateCuratedSkillPlugin(root)).rejects.toThrow(/curated plugin entry missing: skills\/outline/);
  });

  it("fails closed when a skill manifest name does not match the allowlist", async () => {
    const root = await skillPluginFixture();
    await writeFile(join(root, "skills", "outline", "SKILL.md"), "---\nname: other\n---\n");

    await expect(validateCuratedSkillPlugin(root)).rejects.toThrow(/curated skill manifest name mismatch/);
  });

  it("rejects an extra skill directory", async () => {
    const root = await skillPluginFixture();
    await mkdir(join(root, "skills", "extra"));

    await expect(validateCuratedSkillPlugin(root)).rejects.toThrow(/unexpected curated plugin entry: skills\/extra/);
  });

  it("rejects plugin capabilities outside the reviewed skill catalog", async () => {
    const root = await skillPluginFixture();
    await mkdir(join(root, "hooks"));

    await expect(validateCuratedSkillPlugin(root)).rejects.toThrow(/unexpected curated plugin entry: hooks/);
  });

  async function skillPluginFixture(): Promise<string> {
    const root = await mkdtemp(join(tmpdir(), "cph-skills-"));
    roots.push(root);
    await mkdir(join(root, ".claude-plugin"), { recursive: true });
    await writeFile(
      join(root, ".claude-plugin", "plugin.json"),
      JSON.stringify({ name: CURATED_SKILL_PLUGIN_NAME }),
    );
    for (const name of CURATED_SKILL_NAMES) {
      const source = join(root, "skills", name);
      await mkdir(source, { recursive: true });
      await writeFile(join(source, "SKILL.md"), `---\nname: ${name}\n---\n# ${name}\n`);
    }
    return root;
  }
});