// Tests linking branch to GitLab issue via create_branch endpoint
import axios from 'axios';
import { simpleGit } from 'simple-git';
import { startTaskAgent } from '../src/services/startTaskAgent';

jest.mock('simple-git', () => ({ simpleGit: jest.fn() }));
jest.mock('axios');

describe('startTaskAgent linking branch to issue', () => {
  const gitMock: any = {
    status: jest.fn().mockResolvedValue({ files: [] }),
    getRemotes: jest.fn().mockResolvedValue([{ name: 'origin', refs: { fetch: 'git@host:ns/proj.git', push: null } }]),
    fetch: jest.fn(),
    checkout: jest.fn(),
    pull: jest.fn(),
    branch: jest.fn().mockResolvedValue({ all: [] }),
    checkoutBranch: jest.fn(),
    add: jest.fn(),
    commit: jest.fn().mockResolvedValue({ commit: 'sha123' }),
    push: jest.fn(),
    revparse: jest.fn(),
  };

  beforeEach(() => {
    jest.clearAllMocks();
    process.env.GITLAB_TOKEN = 'tok';
    (simpleGit as jest.Mock).mockReturnValue(gitMock);
    // Mock project and issue retrieval
    (axios.get as jest.Mock)
      .mockResolvedValueOnce({ data: { id: 99 } })
      .mockResolvedValueOnce({ data: { title: 'Link Test' }, status: 200, headers: { 'content-type': 'application/json' } });
    // Stub create_branch endpoint
    (axios.post as jest.Mock).mockResolvedValue({ data: {} });
  });

  it('calls create_branch endpoint after pushing branch', async () => {
    const result = await startTaskAgent({ id: '42', gitlabToken: 'tok' });
    expect(axios.post).toHaveBeenCalledWith(
      `/projects/99/issues/42/create_branch`,
      { branch: result.branch, ref: 'main' }
    );
    expect(result).toEqual({ branch: result.branch, commitSha: 'sha123' });
  });

  it('logs warning when create_branch fails', async () => {
    const warnSpy = jest.spyOn(console, 'warn').mockImplementation(() => {});
    // Make create_branch reject
    (axios.post as jest.Mock).mockRejectedValue(new Error('fail link'));
    const result = await startTaskAgent({ id: '43', gitlabToken: 'tok' });
    expect(warnSpy).toHaveBeenCalledWith(
      expect.stringContaining(`Impossible de lier la branche ${result.branch} à l’issue #43`)
    );
    warnSpy.mockRestore();
  });
});