import { describe, it, expect, beforeEach, afterEach } from 'vitest';
import { GitOpsService } from '../src/services/gitops.service.js';
import os from 'os';
import path from 'path';
import fs from 'fs/promises';

describe('GitOpsService', () => {
  let gitops: GitOpsService;
  let testRepoDir: string;

  beforeEach(async () => {
    testRepoDir = path.join(os.tmpdir(), `naxos-gitops-test-${Date.now()}-${Math.random().toString(36).slice(2)}`);
    gitops = new GitOpsService(testRepoDir);
    await gitops.init();
  });

  afterEach(async () => {
    try {
      await fs.rm(testRepoDir, { recursive: true, force: true });
    } catch {}
  });

  it('should initialize and produce valid GitOps status', async () => {
    const status = await gitops.getStatus();
    expect(status.enabled).toBe(true);
    expect(status.branch).toBe('main');
    expect(status.lastCommitSha).toBeDefined();
  });

  it('should translate declarative configuration into valid NixOS module code', async () => {
    const nixCode = await gitops.renderNixOSModule();
    expect(nixCode).toContain('services.naxos.storage');
    expect(nixCode).toContain('services.naxos.shares.samba');
    expect(nixCode).toContain('importExistingPools');
    expect(nixCode).toContain('tank');
  });

  it('should create commits on state changes', async () => {
    const res = await gitops.updateConfig(
      {
        core: { hostname: 'naxos-test', timezone: 'UTC' },
      },
      'feat(test): updated hostname'
    );
    expect(res.commitSha).toBeDefined();
    expect(res.commitSha.length).toBeGreaterThan(10);

    const commits = await gitops.getCommits(5);
    expect(commits[0].message).toBe('feat(test): updated hostname');
  });
});