// test/02_build_scene_json.test.js
const { execSync } = require('child_process');
const fs = require('fs');
const path = require('path');

describe('Build Scene JSON Script', () => {
  const scriptPath = 'programs/02_build_scene_json.py';
  const timestamp = 1778819665744;
  const screenshotDir = path.join(__dirname, 'data', 'screenShots');
  const detectionFiles = [
    'snapshot_video0_1778819665744_aruco_detection.json',
    'snapshot_video1_1778819665744_aruco_detection.json',
  ];

  beforeEach(() => {
    detectionFiles.forEach((file) => {
      const src = path.join(screenshotDir, file);
      if (!fs.existsSync(src)) {
        throw new Error(`Missing test fixture detection file: ${src}`);
      }
    });
  });

  afterEach(() => {
    // Keep the generated scene JSON in the screenshot directory for real-world behavior.
  });

  test('should exist and be executable', () => {
    expect(fs.existsSync(scriptPath)).toBe(true);
  });

  test('should build scene JSON with timestamp parameter', () => {
    const cmd = `python ${scriptPath} -timestamp ${timestamp} -dir "${screenshotDir}"`;

    try {
      execSync(cmd, { stdio: 'inherit' });
    } catch (error) {
      throw new Error(`Failed to build scene JSON: ${error.message}`);
    }

    const expectedJsonFile = path.join(screenshotDir, `scene_${timestamp}.json`);
    expect(fs.existsSync(expectedJsonFile)).toBe(true);

    const jsonData = JSON.parse(fs.readFileSync(expectedJsonFile, 'utf8'));
    expect(jsonData).toBeDefined();
    expect(typeof jsonData).toBe('object');
    expect(jsonData.cameras).toBeDefined();
    expect(Object.keys(jsonData.cameras).sort()).toEqual(['0', '1']);
  });

  test('should handle timestamp parameter correctly', () => {
    // Überprüfe, ob der Timestamp korrekt verarbeitet wird
    expect(timestamp).toBe(1778819665744);
  });
});