import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
import { writeFileSync, mkdirSync, rmSync } from 'fs';
import { resolve } from 'path';
import { runCheck } from '../src/index';

const TMP = resolve(__dirname, 'tmp-integration');

function clean() {
  try { rmSync(TMP, { recursive: true, force: true }); } catch {}
}

vi.mock('../src/git', () => ({
  getChangedFiles: vi.fn(),
  getCommitMessage: vi.fn(),
  getPrDescription: vi.fn(),
}));

import * as gitModule from '../src/git';

describe('integration', () => {
  beforeEach(() => {
    clean();
    mkdirSync(TMP, { recursive: true });
    vi.resetAllMocks();
  });

  afterEach(() => {
    clean();
  });

  it('passes with no config and no changed files', async () => {
    vi.mocked(gitModule.getChangedFiles).mockReturnValue([]);
    vi.mocked(gitModule.getCommitMessage).mockReturnValue('feat: #123');
    writeFileSync(resolve(TMP, 'REQUIREMENTS.md'), '- [x] Done\n');
    const result = await runCheck({ cwd: TMP });
    expect(result.passed).toBe(true);
  });

  it('fails when disclosure is missing', async () => {
    vi.mocked(gitModule.getChangedFiles).mockReturnValue([resolve(TMP, 'bad.ts')]);
    vi.mocked(gitModule.getCommitMessage).mockReturnValue('feat: #123');
    writeFileSync(resolve(TMP, 'bad.ts'), 'no marker');
    writeFileSync(resolve(TMP, 'REQUIREMENTS.md'), '- [x] Done\n');
    const result = await runCheck({ cwd: TMP });
    expect(result.passed).toBe(false);
    const disclosure = result.gateResults.find(g => g.name === 'disclosure');
    expect(disclosure?.passed).toBe(false);
  });

  it('fails when rfc is missing', async () => {
    vi.mocked(gitModule.getChangedFiles).mockReturnValue([]);
    vi.mocked(gitModule.getCommitMessage).mockReturnValue('just a commit');
    writeFileSync(resolve(TMP, 'REQUIREMENTS.md'), '- [x] Done\n');
    const result = await runCheck({ cwd: TMP });
    expect(result.passed).toBe(false);
    const rfc = result.gateResults.find(g => g.name === 'rfc');
    expect(rfc?.passed).toBe(false);
  });

  it('fails when checklist is incomplete', async () => {
    vi.mocked(gitModule.getChangedFiles).mockReturnValue([]);
    vi.mocked(gitModule.getCommitMessage).mockReturnValue('feat: #123');
    writeFileSync(resolve(TMP, 'REQUIREMENTS.md'), '- [ ] Not done\n');
    const result = await runCheck({ cwd: TMP });
    expect(result.passed).toBe(false);
    const checklist = result.gateResults.find(g => g.name === 'checklist');
    expect(checklist?.passed).toBe(false);
  });

  it('skips quality gate when not required', async () => {
    vi.mocked(gitModule.getChangedFiles).mockReturnValue([]);
    vi.mocked(gitModule.getCommitMessage).mockReturnValue('feat: #123');
    writeFileSync(resolve(TMP, 'REQUIREMENTS.md'), '- [x] Done\n');
    const result = await runCheck({ cwd: TMP });
    const quality = result.gateResults.find(g => g.name === 'quality');
    expect(quality).toBeUndefined();
    expect(result.passed).toBe(true);
  });

  it('honors disabled gates via config', async () => {
    writeFileSync(resolve(TMP, '.codegov.json'), JSON.stringify({
      enabled: true,
      gates: {
        disclosure: { required: false },
        rfc: { required: false },
        checklist: { required: false },
      },
    }));
    vi.mocked(gitModule.getChangedFiles).mockReturnValue([]);
    const result = await runCheck({ cwd: TMP });
    expect(result.passed).toBe(true);
    expect(result.gateResults.length).toBe(0);
  });
});