import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
import logger from '../../src/logger';
import { CIProgressReporter } from '../../src/progress/ciProgressReporter';
import { mockConsole, mockProcessEnv } from '../util/utils';

// Mock the logger
vi.mock('../../src/logger', () => ({
  default: {
    info: vi.fn(),
    error: vi.fn(),
  },
}));

describe('CIProgressReporter', () => {
  let consoleLogMock: ReturnType<typeof mockConsole>;
  let restoreEnv: () => void;

  beforeEach(() => {
    vi.clearAllMocks();
    vi.useFakeTimers();
    consoleLogMock = mockConsole('log');
    restoreEnv = mockProcessEnv({ GITHUB_ACTIONS: undefined });
  });

  afterEach(() => {
    vi.useRealTimers();
    consoleLogMock.mockRestore();
    restoreEnv();
  });

  it('should log start message', () => {
    const reporter = new CIProgressReporter(100);
    reporter.start();

    expect(logger.info).toHaveBeenCalledWith('[Evaluation] Starting 100 test cases...');
  });

  it('should log milestone updates at 25%, 50%, 75%', () => {
    const reporter = new CIProgressReporter(100);
    reporter.start();
    vi.clearAllMocks();

    // Update to 25%
    reporter.update(25);
    expect(logger.info).toHaveBeenCalledWith(
      expect.stringContaining('[Evaluation] ✓ 25% complete (25/100)'),
    );

    // Update to 50%
    reporter.update(50);
    expect(logger.info).toHaveBeenCalledWith(
      expect.stringContaining('[Evaluation] ✓ 50% complete (50/100)'),
    );

    // Update to 75%
    reporter.update(75);
    expect(logger.info).toHaveBeenCalledWith(
      expect.stringContaining('[Evaluation] ✓ 75% complete (75/100)'),
    );
  });

  it('should log periodic updates at intervals', () => {
    const reporter = new CIProgressReporter(100, 1000); // 1 second interval
    reporter.start();
    reporter.update(30);
    vi.clearAllMocks();

    // Advance time by 1 second
    vi.advanceTimersByTime(1000);

    expect(logger.info).toHaveBeenCalledWith(
      expect.stringContaining('[CI Progress] Evaluation running for'),
    );
    expect(logger.info).toHaveBeenCalledWith(
      expect.stringContaining('Completed 30/100 tests (30%)'),
    );
  });

  it('should log finish message', () => {
    const reporter = new CIProgressReporter(100);
    reporter.start();
    reporter.update(100);
    vi.clearAllMocks();

    reporter.finish();

    expect(logger.info).toHaveBeenCalledWith(
      expect.stringContaining('[Evaluation] ✓ Complete! 100/100 tests in'),
    );
  });

  it('should emit GitHub Actions annotations when GITHUB_ACTIONS is set', () => {
    const restoreGithubActions = mockProcessEnv({ GITHUB_ACTIONS: 'true' });
    try {
      const reporter = new CIProgressReporter(100);

      reporter.update(25);
      expect(consoleLogMock).toHaveBeenCalledWith('::notice::Evaluation 25% complete');

      reporter.finish();
      expect(consoleLogMock).toHaveBeenCalledWith(
        expect.stringContaining('::notice::Evaluation completed: 25/100 tests in'),
      );
    } finally {
      restoreGithubActions();
    }
  });

  it('should handle errors', () => {
    const reporter = new CIProgressReporter(100);
    reporter.error('Test error message');

    expect(logger.error).toHaveBeenCalledWith('[Evaluation Error] Test error message');
  });

  it('should emit GitHub Actions error annotation', () => {
    const restoreGithubActions = mockProcessEnv({ GITHUB_ACTIONS: 'true' });
    try {
      const reporter = new CIProgressReporter(100);

      reporter.error('Test error');
      expect(consoleLogMock).toHaveBeenCalledWith('::error::Test error');
    } finally {
      restoreGithubActions();
    }
  });

  it('should clear interval on finish', () => {
    const reporter = new CIProgressReporter(100, 1000);
    reporter.start();

    // Verify interval is set
    expect(vi.getTimerCount()).toBe(1);

    reporter.finish();

    // Verify interval is cleared
    expect(vi.getTimerCount()).toBe(0);
  });

  it('should format elapsed time correctly', () => {
    const reporter = new CIProgressReporter(100);
    reporter.start();

    // Advance time by 65 seconds
    vi.advanceTimersByTime(65000);

    reporter.finish();

    expect(logger.info).toHaveBeenCalledWith(expect.stringContaining('1m 5s'));
  });
});