/**
 * @file Tests for skills-install.js: skill-copy path resolution (source:
 * repoRoot/skills/ not repoRoot/.claude/skills/) and error handling.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */

const os = require("node:os");
const path = require("node:path");
const fs = require("node:fs");

const SUITE_ROOT = fs.mkdtempSync(path.join(os.tmpdir(), "agenthub-skills-"));
process.env.DASHBOARD_DB_PATH = path.join(SUITE_ROOT, "dashboard.db");

const { describe, it, after } = require("node:test");
const assert = require("node:assert/strict");

const { installShipFeatureLaneSkill } = require("../lib/skills-install");

after(() => fs.rmSync(SUITE_ROOT, { recursive: true, force: true }));

describe("installShipFeatureLaneSkill", () => {
  it("resolves source from repoRoot/skills/ (new path), not .claude/skills/", () => {
    // Build a fake repoRoot with the skill only under skills/ship-feature-lane/
    const repoRoot = path.join(SUITE_ROOT, "mock-repo");
    const src = path.join(repoRoot, "skills", "ship-feature-lane");
    fs.mkdirSync(src, { recursive: true });
    fs.writeFileSync(path.join(src, "SKILL.md"), "# Fake Ship Feature Lane Skill");

    // The old path should NOT exist
    const oldPath = path.join(repoRoot, ".claude", "skills", "ship-feature-lane", "SKILL.md");
    assert.equal(fs.existsSync(oldPath), false);

    // Override HOME so we don't touch real ~/.claude
    const origHome = process.env.HOME;
    const fakeHome = path.join(SUITE_ROOT, "fake-home");
    process.env.HOME = fakeHome;

    try {
      const result = installShipFeatureLaneSkill({ repoRoot });
      assert.equal(result.installed, true);
      assert.ok(result.path.startsWith(fakeHome));

      const installedFile = path.join(result.path, "SKILL.md");
      assert.ok(fs.existsSync(installedFile));
      assert.equal(fs.readFileSync(installedFile, "utf8"), "# Fake Ship Feature Lane Skill");
    } finally {
      process.env.HOME = origHome;
    }
  });

  it("throws ENOSKILLSRC when skills/ship-feature-lane/ is missing", () => {
    const repoRoot = path.join(SUITE_ROOT, "empty-repo");
    fs.mkdirSync(repoRoot, { recursive: true });
    assert.throws(
      () => installShipFeatureLaneSkill({ repoRoot }),
      (err) => err.code === "ENOSKILLSRC"
    );
  });

  it("overwrites an existing installed skill (force: true)", () => {
    const repoRoot = path.join(SUITE_ROOT, "mock-repo-overwrite");
    const src = path.join(repoRoot, "skills", "ship-feature-lane");
    fs.mkdirSync(src, { recursive: true });
    fs.writeFileSync(path.join(src, "SKILL.md"), "# Updated skill");

    const origHome = process.env.HOME;
    const fakeHome = path.join(SUITE_ROOT, "fake-home-overwrite");
    process.env.HOME = fakeHome;

    try {
      // First install
      installShipFeatureLaneSkill({ repoRoot });
      // Tamper with installed copy
      const existing = path.join(fakeHome, ".claude", "skills", "ship-feature-lane", "SKILL.md");
      fs.writeFileSync(existing, "# Tampered");
      // Reinstall — should overwrite
      installShipFeatureLaneSkill({ repoRoot });
      assert.equal(fs.readFileSync(existing, "utf8"), "# Updated skill");
    } finally {
      process.env.HOME = origHome;
    }
  });
});