const { execSync } = require('child_process');
const fs = require('fs');
const path = require('path');

const BASE_PATH = path.join(__dirname, '..');
const PYTHON_CMD = process.platform === 'win32' ? 'python' : 'python3';
const screenshotFiles = [
  'snapshot_video0_1778819665744.jpg',
  'snapshot_video1_1778819665744.jpg',
];

const SOURCE_DIR = path.join(__dirname, 'data', 'screenShots');
const DEST_DIR = path.join(__dirname, 'data', 'screenshots', '1778819665744_twoCam_testResults');

describe('Camera Pose Script', () => {
  beforeEach(() => {
    if (!fs.existsSync(DEST_DIR)) {
      fs.mkdirSync(DEST_DIR, { recursive: true });
    }
    screenshotFiles.forEach((file) => {
      const src = path.join(SOURCE_DIR, file);
      if (!fs.existsSync(src)) {
        throw new Error(`Missing test fixture screenshot: ${src}`);
      }
    });
  });

  afterEach(() => {
    // Keep generated outputs for inspection.
  });

  test('should execute readTwoImages without modifying shared fixtures', () => {
    const strFile0 = path.join(SOURCE_DIR, 'snapshot_video0_1778819665744.jpg');
    const strFile1 = path.join(SOURCE_DIR, 'snapshot_video1_1778819665744.jpg');
    const command2 = `${PYTHON_CMD} "${path.join(BASE_PATH, 'programs/readTwoImages.py')}" \
      -i "${strFile0}" \
      -i "${strFile1}" \
      -npz "${path.join(BASE_PATH, 'data/settings/callibration_cam0.npz')}" \
      -npz "${path.join(BASE_PATH, 'data/settings/callibration_cam1.npz')}" \
      -settings "${path.join(BASE_PATH, 'data/settings/settings1m.json')}" \
      --outDir "${DEST_DIR}"`;

    expect(() => {
      execSync(command2, { stdio: 'inherit' });
    }).not.toThrow();
});

});