/**
 * Bug 回归测试用例生成器
 * 
 * 根据 Bug 标题、描述、复现步骤自动生成 Playwright 测试用例。
 * 每个 Bug 生成独立的 spec 文件：tests/e2e/specs/bug-{id}.spec.ts
 */

export interface BugInfo {
  id: string;
  title: string;
  description?: string;
  steps?: string;
  module?: string;
  severity?: string;
}

/**
 * 从 Bug 标题推断所属模块和页面路径
 */
function inferModule(title: string): { page: string; route: string; description: string } {
  const t = title.toLowerCase();
  
  if (t.includes('门诊医生') || t.includes('门诊诊前') || t.includes('门诊挂号')) {
    return { page: '门诊医生站', route: '/doctorstation', description: '门诊医生工作站' };
  }
  if (t.includes('住院医生') || t.includes('临床医嘱') || t.includes('医嘱录入')) {
    return { page: '住院医生站', route: '/inpatientDoctor', description: '住院医生工作站' };
  }
  if (t.includes('住院护士') || t.includes('补费') || t.includes('发退药') || t.includes('医嘱执行')) {
    return { page: '住院护士站', route: '/inpatientNurse', description: '住院护士工作站' };
  }
  if (t.includes('分诊') || t.includes('排队') || t.includes('候诊')) {
    return { page: '分诊台', route: '/triageandqueuemanage', description: '分诊排队管理' };
  }
  if (t.includes('挂号') || t.includes('预约') || t.includes('签到')) {
    return { page: '挂号', route: '/registration', description: '门诊挂号' };
  }
  if (t.includes('手术') || t.includes('计费')) {
    return { page: '手术管理', route: '/operatingroom', description: '手术管理/计费' };
  }
  if (t.includes('诊断') || t.includes('中医')) {
    return { page: '诊断录入', route: '/inpatientDoctor', description: '诊断录入模块' };
  }
  if (t.includes('病历') || t.includes('EMR') || t.includes('emr')) {
    return { page: '病历', route: '/doctorstation', description: '电子病历' };
  }
  if (t.includes('目录') || t.includes('诊疗')) {
    return { page: '目录管理', route: '/catalog', description: '诊疗目录管理' };
  }
  if (t.includes('药房') || t.includes('发药') || t.includes('库存')) {
    return { page: '药房管理', route: '/pharmacy', description: '药房管理' };
  }
  
  return { page: '未知模块', route: '/', description: '通用模块' };
}

/**
 * 从 Bug 标题推断需要测试的关键操作
 */
function inferTestActions(title: string): string[] {
  const actions: string[] = [];
  const t = title.toLowerCase();
  
  if (t.includes('报错') || t.includes('错误') || t.includes('异常')) {
    actions.push('检查页面无 JS 错误');
    actions.push('检查控制台无报错');
  }
  if (t.includes('显示') || t.includes('缺失') || t.includes('不规范')) {
    actions.push('检查元素正确显示');
    actions.push('检查数据完整性');
  }
  if (t.includes('弹窗') || t.includes('弹框')) {
    actions.push('检查弹窗正常弹出');
    actions.push('检查弹窗内容正确');
  }
  if (t.includes('保存') || t.includes('提交') || t.includes('写入')) {
    actions.push('检查保存操作成功');
    actions.push('检查数据持久化');
  }
  if (t.includes('列表') || t.includes('查询')) {
    actions.push('检查列表数据加载');
    actions.push('检查分页功能');
  }
  if (t.includes('按钮') || t.includes('操作')) {
    actions.push('检查按钮可点击');
    actions.push('检查操作响应');
  }
  if (t.includes('下拉') || t.includes('选择') || t.includes('字典')) {
    actions.push('检查下拉选项加载');
    actions.push('检查选项值正确');
  }
  if (t.includes('退回') || t.includes('撤回') || t.includes('取消')) {
    actions.push('检查退回流程');
    actions.push('检查状态变更');
  }
  
  // 至少有一个基础检查
  if (actions.length === 0) {
    actions.push('检查页面正常加载');
    actions.push('检查无明显异常');
  }
  
  return actions;
}

/**
 * 生成 Playwright 测试用例代码
 */
export function generateBugTestSpec(bug: BugInfo): string {
  const mod = inferModule(bug.title);
  const actions = inferTestActions(bug.title);
  
  const stepsComment = bug.steps 
    ? `\n  // 复现步骤:\n  // ${bug.steps.split('\n').join('\n  // ')}`
    : '';

  return `import { test, expect } from '@playwright/test';
import { LoginPage } from '../pages/LoginPage';

/**
 * Bug #${bug.id}: ${bug.title}
 * 模块: ${mod.description}
 * 自动生成时间: ${new Date().toISOString()}
 * 严重程度: ${bug.severity || '未知'}
 */
test.describe('🐛 Bug#${bug.id} ${mod.description}', () => {
  let loginPage: LoginPage;

  test.beforeEach(async ({ page }) => {
    loginPage = new LoginPage(page);
    await loginPage.goto();
    await loginPage.login(
      process.env.TEST_USERNAME || 'admin',
      process.env.TEST_PASSWORD || 'admin123'
    );
    await loginPage.expectLoginSuccess();
  });

  test('#${bug.id} ${bug.title} @bug${bug.id} @regression', async ({ page }) => {
    // 导航到目标页面
    await page.goto('${mod.route}');
    await page.waitForLoadState('networkidle');
    ${stepsComment}

    // ── 检查项 ──
    // 1. 页面正常加载
    await expect(page).not.toHaveURL(/.*login.*/);
    
    // 2. 检查页面无 JS 错误
    const jsErrors: string[] = [];
    page.on('pageerror', (err) => jsErrors.push(err.message));
    await page.waitForTimeout(2000);
    
    // 3. 执行具体检查
${actions.map(a => `    // ${a}
    await page.waitForTimeout(500);`).join('\n')}

    // 4. 断言：无 JS 错误
    expect(jsErrors).toEqual([]);
    
    // 5. 截图记录
    await page.screenshot({ 
      path: 'tests/e2e/report/bug-${bug.id}-result.png',
      fullPage: true 
    });
  });
});
`;
}

/**
 * 将测试用例写入文件
 */
export function writeBugTestSpec(bug: BugInfo): string {
  const spec = generateBugTestSpec(bug);
  const fs = require('fs');
  const path = require('path');
  
  const specDir = path.join(__dirname, '..', 'specs');
  const filePath = path.join(specDir, `bug-${bug.id}.spec.ts`);
  
  // 不覆盖已有测试
  if (fs.existsSync(filePath)) {
    return filePath;
  }
  
  fs.mkdirSync(specDir, { recursive: true });
  fs.writeFileSync(filePath, spec, 'utf-8');
  
  return filePath;
}