import * as fs from 'fs';
import * as path from 'path';

describe('uni-app 框架自带原生 tabBar 规范测试 (TDD Red -> Green)', () => {
  const rootDir = path.resolve(__dirname, '../../../mpuniapp');
  const pagesJsonPath = path.join(rootDir, 'pages.json');

  it('1. pages.json 中必须配置合法且符合 uni-app 原生规范的 tabBar', () => {
    expect(fs.existsSync(pagesJsonPath)).toBe(true);
    const content = fs.readFileSync(pagesJsonPath, 'utf-8');
    // 去除 json 中的注释
    const cleanJson = content.replace(/\/\*[\s\S]*?\*\/|([^:]|^)\/\/.*$/gm, '$1');
    const config = JSON.parse(cleanJson);

    expect(config.tabBar).toBeDefined();
    expect(Array.isArray(config.tabBar.list)).toBe(true);
    expect(config.tabBar.list.length).toBeGreaterThanOrEqual(2);
    expect(config.tabBar.list.length).toBeLessThanOrEqual(5);

    // 关键规范：tabBar.list[0].pagePath 必须与 pages[0].path 一致，原生 tabBar 才能在首屏正常加载
    expect(config.tabBar.list[0].pagePath).toBe(config.pages[0].path);
    expect(['工作台', '名片']).toContain(config.tabBar.list[0].text);

    // 校验颜色 Token
    expect(config.tabBar.color.toLowerCase()).toBe('#667085');
    expect(config.tabBar.selectedColor.toLowerCase()).toBe('#0b5cff');
  });

  it('2. tabBar 中声明的所有图标资源文件必须真实存在', () => {
    const content = fs.readFileSync(pagesJsonPath, 'utf-8');
    const cleanJson = content.replace(/\/\*[\s\S]*?\*\/|([^:]|^)\/\/.*$/gm, '$1');
    const config = JSON.parse(cleanJson);

    for (const item of config.tabBar.list) {
      if (item.iconPath) {
        const iconFile = path.join(rootDir, item.iconPath);
        expect(fs.existsSync(iconFile)).toBe(true);
      }
      if (item.selectedIconPath) {
        const selIconFile = path.join(rootDir, item.selectedIconPath);
        expect(fs.existsSync(selIconFile)).toBe(true);
      }
    }
  });
});