第86天：Bug 修复与功能增强贡献

学习目标

• 掌握 Element Plus Bug 修复的完整流程
• 学习功能增强的设计和实现方法
• 理解代码质量标准和测试要求
• 培养系统性的问题解决能力

1. Bug 修复流程与方法

1.1 Bug 分析与诊断系统

// Bug 分析诊断系统
class BugAnalysisSystem {
  private bugDatabase: Map<string, BugReport> = new Map()
  private diagnosticTools: DiagnosticTool[] = []
  private fixPatterns: Map<string, FixPattern> = new Map()
  
  constructor() {
    this.initializeDiagnosticTools()
    this.initializeFixPatterns()
  }
  
  // 初始化诊断工具
  private initializeDiagnosticTools(): void {
    this.diagnosticTools = [
      {
        name: 'component-lifecycle',
        description: '组件生命周期问题诊断',
        detector: this.detectLifecycleIssues.bind(this),
        severity: 'medium'
      },
      {
        name: 'reactivity-system',
        description: '响应式系统问题诊断',
        detector: this.detectReactivityIssues.bind(this),
        severity: 'high'
      },
      {
        name: 'event-handling',
        description: '事件处理问题诊断',
        detector: this.detectEventIssues.bind(this),
        severity: 'medium'
      },
      {
        name: 'style-rendering',
        description: '样式渲染问题诊断',
        detector: this.detectStyleIssues.bind(this),
        severity: 'low'
      },
      {
        name: 'accessibility',
        description: '无障碍访问问题诊断',
        detector: this.detectA11yIssues.bind(this),
        severity: 'high'
      },
      {
        name: 'performance',
        description: '性能问题诊断',
        detector: this.detectPerformanceIssues.bind(this),
        severity: 'medium'
      }
    ]
  }
  
  // 初始化修复模式
  private initializeFixPatterns(): void {
    // 生命周期修复模式
    this.fixPatterns.set('lifecycle-cleanup', {
      name: '生命周期清理',
      description: '在组件卸载时清理资源',
      pattern: `
// 修复前
setup() {
  const timer = setInterval(() => {}, 1000)
  // 缺少清理逻辑
}

// 修复后
setup() {
  const timer = setInterval(() => {}, 1000)
  
  onUnmounted(() => {
    clearInterval(timer)
  })
}
      `,
      applicableIssues: ['memory-leak', 'timer-not-cleared', 'event-listener-leak']
    })
    
    // 响应式修复模式
    this.fixPatterns.set('reactivity-fix', {
      name: '响应式数据修复',
      description: '正确使用响应式API',
      pattern: `
// 修复前
const data = {
  count: 0
}

// 修复后
const data = reactive({
  count: 0
})
// 或者
const count = ref(0)
      `,
      applicableIssues: ['data-not-reactive', 'computed-not-updating', 'watch-not-triggering']
    })
    
    // 事件处理修复模式
    this.fixPatterns.set('event-handling-fix', {
      name: '事件处理修复',
      description: '正确处理事件绑定和解绑',
      pattern: `
// 修复前
<template>
  <div @click="handleClick">
    <child-component />
  </div>
</template>

// 修复后
<template>
  <div @click.stop="handleClick">
    <child-component />
  </div>
</template>
      `,
      applicableIssues: ['event-bubbling', 'event-not-prevented', 'multiple-handlers']
    })
    
    // 无障碍修复模式
    this.fixPatterns.set('accessibility-fix', {
      name: '无障碍访问修复',
      description: '添加必要的ARIA属性和语义化标签',
      pattern: `
// 修复前
<div class="button" @click="handleClick">
  Click me
</div>

// 修复后
<button 
  type="button"
  :aria-label="buttonLabel"
  :aria-pressed="isPressed"
  @click="handleClick"
>
  Click me
</button>
      `,
      applicableIssues: ['missing-aria', 'wrong-semantic', 'keyboard-navigation']
    })
  }
  
  // 分析Bug报告
  async analyzeBug(bugReport: BugReportInput): Promise<BugAnalysis> {
    const bugId = this.generateBugId()
    
    const bug: BugReport = {
      id: bugId,
      title: bugReport.title,
      description: bugReport.description,
      reproduction: bugReport.reproduction,
      environment: bugReport.environment,
      severity: this.calculateSeverity(bugReport),
      category: this.categorize(bugReport),
      status: 'analyzing',
      createdAt: new Date(),
      updatedAt: new Date(),
      assignee: null,
      labels: [],
      relatedIssues: []
    }
    
    this.bugDatabase.set(bugId, bug)
    
    // 运行诊断工具
    const diagnosticResults = await this.runDiagnostics(bug)
    
    // 查找相似问题
    const similarBugs = this.findSimilarBugs(bug)
    
    // 推荐修复方案
    const fixRecommendations = this.recommendFixes(bug, diagnosticResults)
    
    const analysis: BugAnalysis = {
      bugId,
      severity: bug.severity,
      category: bug.category,
      rootCause: this.identifyRootCause(diagnosticResults),
      diagnosticResults,
      similarBugs,
      fixRecommendations,
      estimatedEffort: this.estimateFixEffort(bug, diagnosticResults),
      priority: this.calculatePriority(bug, diagnosticResults)
    }
    
    bug.status = 'analyzed'
    bug.updatedAt = new Date()
    
    return analysis
  }
  
  // 生成Bug ID
  private generateBugId(): string {
    return `bug-${Date.now()}-${Math.random().toString(36).substr(2, 8)}`
  }
  
  // 计算严重程度
  private calculateSeverity(bugReport: BugReportInput): 'critical' | 'high' | 'medium' | 'low' {
    const description = bugReport.description.toLowerCase()
    const reproduction = bugReport.reproduction.toLowerCase()
    
    // 关键词检测
    const criticalKeywords = ['crash', 'data loss', 'security', 'cannot use']
    const highKeywords = ['error', 'exception', 'broken', 'not working']
    const mediumKeywords = ['incorrect', 'unexpected', 'inconsistent']
    
    const content = `${description} ${reproduction}`
    
    if (criticalKeywords.some(keyword => content.includes(keyword))) {
      return 'critical'
    }
    
    if (highKeywords.some(keyword => content.includes(keyword))) {
      return 'high'
    }
    
    if (mediumKeywords.some(keyword => content.includes(keyword))) {
      return 'medium'
    }
    
    return 'low'
  }
  
  // 分类Bug
  private categorize(bugReport: BugReportInput): BugCategory {
    const content = `${bugReport.title} ${bugReport.description}`.toLowerCase()
    
    if (content.includes('style') || content.includes('css') || content.includes('appearance')) {
      return 'styling'
    }
    
    if (content.includes('event') || content.includes('click') || content.includes('handler')) {
      return 'event-handling'
    }
    
    if (content.includes('data') || content.includes('state') || content.includes('reactive')) {
      return 'data-binding'
    }
    
    if (content.includes('performance') || content.includes('slow') || content.includes('lag')) {
      return 'performance'
    }
    
    if (content.includes('accessibility') || content.includes('a11y') || content.includes('screen reader')) {
      return 'accessibility'
    }
    
    return 'functionality'
  }
  
  // 运行诊断工具
  private async runDiagnostics(bug: BugReport): Promise<DiagnosticResult[]> {
    const results: DiagnosticResult[] = []
    
    for (const tool of this.diagnosticTools) {
      try {
        const result = await tool.detector(bug)
        if (result.issues.length > 0) {
          results.push(result)
        }
      } catch (error) {
        console.warn(`Diagnostic tool ${tool.name} failed:`, error)
      }
    }
    
    return results
  }
  
  // 检测生命周期问题
  private async detectLifecycleIssues(bug: BugReport): Promise<DiagnosticResult> {
    const issues: DiagnosticIssue[] = []
    
    const content = `${bug.description} ${bug.reproduction}`.toLowerCase()
    
    if (content.includes('memory leak') || content.includes('not cleaned')) {
      issues.push({
        type: 'memory-leak',
        description: '可能存在内存泄漏',
        severity: 'high',
        location: 'component lifecycle',
        suggestion: '检查组件卸载时是否正确清理资源'
      })
    }
    
    if (content.includes('timer') && content.includes('not stop')) {
      issues.push({
        type: 'timer-not-cleared',
        description: '定时器未正确清理',
        severity: 'medium',
        location: 'timer management',
        suggestion: '在onUnmounted中清理定时器'
      })
    }
    
    return {
      toolName: 'component-lifecycle',
      issues,
      confidence: issues.length > 0 ? 0.8 : 0.1
    }
  }
  
  // 检测响应式问题
  private async detectReactivityIssues(bug: BugReport): Promise<DiagnosticResult> {
    const issues: DiagnosticIssue[] = []
    
    const content = `${bug.description} ${bug.reproduction}`.toLowerCase()
    
    if (content.includes('not updating') || content.includes('not reactive')) {
      issues.push({
        type: 'data-not-reactive',
        description: '数据可能不是响应式的',
        severity: 'high',
        location: 'data declaration',
        suggestion: '使用ref()或reactive()包装数据'
      })
    }
    
    if (content.includes('computed') && content.includes('not work')) {
      issues.push({
        type: 'computed-not-updating',
        description: '计算属性未正确更新',
        severity: 'medium',
        location: 'computed property',
        suggestion: '检查计算属性的依赖是否正确'
      })
    }
    
    return {
      toolName: 'reactivity-system',
      issues,
      confidence: issues.length > 0 ? 0.9 : 0.1
    }
  }
  
  // 检测事件问题
  private async detectEventIssues(bug: BugReport): Promise<DiagnosticResult> {
    const issues: DiagnosticIssue[] = []
    
    const content = `${bug.description} ${bug.reproduction}`.toLowerCase()
    
    if (content.includes('event') && (content.includes('bubble') || content.includes('propagat'))) {
      issues.push({
        type: 'event-bubbling',
        description: '事件冒泡问题',
        severity: 'medium',
        location: 'event handler',
        suggestion: '使用.stop修饰符阻止事件冒泡'
      })
    }
    
    if (content.includes('multiple') && content.includes('trigger')) {
      issues.push({
        type: 'multiple-handlers',
        description: '多重事件处理器',
        severity: 'low',
        location: 'event binding',
        suggestion: '检查是否重复绑定事件处理器'
      })
    }
    
    return {
      toolName: 'event-handling',
      issues,
      confidence: issues.length > 0 ? 0.7 : 0.1
    }
  }
  
  // 检测样式问题
  private async detectStyleIssues(bug: BugReport): Promise<DiagnosticResult> {
    const issues: DiagnosticIssue[] = []
    
    const content = `${bug.description} ${bug.reproduction}`.toLowerCase()
    
    if (content.includes('style') && content.includes('not apply')) {
      issues.push({
        type: 'style-not-applied',
        description: '样式未正确应用',
        severity: 'low',
        location: 'CSS/SCSS',
        suggestion: '检查样式选择器优先级和作用域'
      })
    }
    
    if (content.includes('responsive') || content.includes('mobile')) {
      issues.push({
        type: 'responsive-issue',
        description: '响应式布局问题',
        severity: 'medium',
        location: 'CSS media queries',
        suggestion: '检查媒体查询和弹性布局'
      })
    }
    
    return {
      toolName: 'style-rendering',
      issues,
      confidence: issues.length > 0 ? 0.6 : 0.1
    }
  }
  
  // 检测无障碍问题
  private async detectA11yIssues(bug: BugReport): Promise<DiagnosticResult> {
    const issues: DiagnosticIssue[] = []
    
    const content = `${bug.description} ${bug.reproduction}`.toLowerCase()
    
    if (content.includes('screen reader') || content.includes('accessibility')) {
      issues.push({
        type: 'missing-aria',
        description: '缺少ARIA属性',
        severity: 'high',
        location: 'HTML attributes',
        suggestion: '添加适当的ARIA标签和属性'
      })
    }
    
    if (content.includes('keyboard') && content.includes('navigation')) {
      issues.push({
        type: 'keyboard-navigation',
        description: '键盘导航问题',
        severity: 'high',
        location: 'focus management',
        suggestion: '确保所有交互元素可通过键盘访问'
      })
    }
    
    return {
      toolName: 'accessibility',
      issues,
      confidence: issues.length > 0 ? 0.9 : 0.1
    }
  }
  
  // 检测性能问题
  private async detectPerformanceIssues(bug: BugReport): Promise<DiagnosticResult> {
    const issues: DiagnosticIssue[] = []
    
    const content = `${bug.description} ${bug.reproduction}`.toLowerCase()
    
    if (content.includes('slow') || content.includes('lag') || content.includes('performance')) {
      issues.push({
        type: 'performance-degradation',
        description: '性能下降',
        severity: 'medium',
        location: 'component rendering',
        suggestion: '检查是否存在不必要的重渲染'
      })
    }
    
    if (content.includes('large data') || content.includes('many items')) {
      issues.push({
        type: 'large-dataset',
        description: '大数据集处理问题',
        severity: 'medium',
        location: 'data handling',
        suggestion: '考虑使用虚拟滚动或分页'
      })
    }
    
    return {
      toolName: 'performance',
      issues,
      confidence: issues.length > 0 ? 0.7 : 0.1
    }
  }
  
  // 查找相似Bug
  private findSimilarBugs(bug: BugReport): SimilarBug[] {
    const similarBugs: SimilarBug[] = []
    
    for (const [id, existingBug] of this.bugDatabase) {
      if (id === bug.id) continue
      
      const similarity = this.calculateSimilarity(bug, existingBug)
      if (similarity > 0.6) {
        similarBugs.push({
          id: existingBug.id,
          title: existingBug.title,
          similarity,
          status: existingBug.status
        })
      }
    }
    
    return similarBugs.sort((a, b) => b.similarity - a.similarity).slice(0, 5)
  }
  
  // 计算相似度
  private calculateSimilarity(bug1: BugReport, bug2: BugReport): number {
    const text1 = `${bug1.title} ${bug1.description}`.toLowerCase()
    const text2 = `${bug2.title} ${bug2.description}`.toLowerCase()
    
    // 简化的相似度计算
    const words1 = new Set(text1.split(/\s+/))
    const words2 = new Set(text2.split(/\s+/))
    
    const intersection = new Set([...words1].filter(x => words2.has(x)))
    const union = new Set([...words1, ...words2])
    
    return intersection.size / union.size
  }
  
  // 识别根本原因
  private identifyRootCause(diagnosticResults: DiagnosticResult[]): string {
    if (diagnosticResults.length === 0) {
      return 'Unknown - requires manual investigation'
    }
    
    // 找到置信度最高的诊断结果
    const mostConfident = diagnosticResults.reduce((max, current) => 
      current.confidence > max.confidence ? current : max
    )
    
    if (mostConfident.issues.length > 0) {
      return mostConfident.issues[0].description
    }
    
    return 'Multiple potential causes identified'
  }
  
  // 推荐修复方案
  private recommendFixes(bug: BugReport, diagnosticResults: DiagnosticResult[]): FixRecommendation[] {
    const recommendations: FixRecommendation[] = []
    
    diagnosticResults.forEach(result => {
      result.issues.forEach(issue => {
        const pattern = this.findApplicablePattern(issue.type)
        if (pattern) {
          recommendations.push({
            type: issue.type,
            description: issue.suggestion,
            pattern: pattern.pattern,
            confidence: result.confidence,
            effort: this.estimateFixEffortForIssue(issue)
          })
        }
      })
    })
    
    return recommendations.sort((a, b) => b.confidence - a.confidence)
  }
  
  // 查找适用的修复模式
  private findApplicablePattern(issueType: string): FixPattern | null {
    for (const [, pattern] of this.fixPatterns) {
      if (pattern.applicableIssues.includes(issueType)) {
        return pattern
      }
    }
    return null
  }
  
  // 估算修复工作量
  private estimateFixEffort(bug: BugReport, diagnosticResults: DiagnosticResult[]): 'small' | 'medium' | 'large' {
    if (bug.severity === 'critical') {
      return 'large'
    }
    
    const totalIssues = diagnosticResults.reduce((sum, result) => sum + result.issues.length, 0)
    
    if (totalIssues > 3) {
      return 'large'
    } else if (totalIssues > 1) {
      return 'medium'
    } else {
      return 'small'
    }
  }
  
  // 估算单个问题的修复工作量
  private estimateFixEffortForIssue(issue: DiagnosticIssue): 'small' | 'medium' | 'large' {
    switch (issue.severity) {
      case 'high':
        return 'large'
      case 'medium':
        return 'medium'
      case 'low':
        return 'small'
      default:
        return 'medium'
    }
  }
  
  // 计算优先级
  private calculatePriority(bug: BugReport, diagnosticResults: DiagnosticResult[]): number {
    let priority = 0
    
    // 基于严重程度
    switch (bug.severity) {
      case 'critical':
        priority += 100
        break
      case 'high':
        priority += 75
        break
      case 'medium':
        priority += 50
        break
      case 'low':
        priority += 25
        break
    }
    
    // 基于诊断置信度
    const avgConfidence = diagnosticResults.reduce((sum, result) => 
      sum + result.confidence, 0) / diagnosticResults.length
    priority += avgConfidence * 20
    
    // 基于问题数量
    const totalIssues = diagnosticResults.reduce((sum, result) => sum + result.issues.length, 0)
    priority += totalIssues * 5
    
    return Math.round(priority)
  }
  
  // 获取Bug统计
  getBugStatistics(): BugStatistics {
    const bugs = Array.from(this.bugDatabase.values())
    
    return {
      total: bugs.length,
      bySeverity: {
        critical: bugs.filter(b => b.severity === 'critical').length,
        high: bugs.filter(b => b.severity === 'high').length,
        medium: bugs.filter(b => b.severity === 'medium').length,
        low: bugs.filter(b => b.severity === 'low').length
      },
      byCategory: this.groupByCategory(bugs),
      byStatus: this.groupByStatus(bugs),
      averageResolutionTime: this.calculateAverageResolutionTime(bugs)
    }
  }
  
  // 按类别分组
  private groupByCategory(bugs: BugReport[]): Record<BugCategory, number> {
    const categories: Record<BugCategory, number> = {
      'functionality': 0,
      'styling': 0,
      'performance': 0,
      'accessibility': 0,
      'data-binding': 0,
      'event-handling': 0
    }
    
    bugs.forEach(bug => {
      categories[bug.category]++
    })
    
    return categories
  }
  
  // 按状态分组
  private groupByStatus(bugs: BugReport[]): Record<string, number> {
    const statuses: Record<string, number> = {}
    
    bugs.forEach(bug => {
      statuses[bug.status] = (statuses[bug.status] || 0) + 1
    })
    
    return statuses
  }
  
  // 计算平均解决时间
  private calculateAverageResolutionTime(bugs: BugReport[]): number {
    const resolvedBugs = bugs.filter(b => b.status === 'resolved')
    
    if (resolvedBugs.length === 0) return 0
    
    const totalTime = resolvedBugs.reduce((sum, bug) => {
      const resolutionTime = bug.updatedAt.getTime() - bug.createdAt.getTime()
      return sum + resolutionTime
    }, 0)
    
    return totalTime / resolvedBugs.length / (1000 * 60 * 60 * 24) // 转换为天
  }
}

// 类型定义
interface BugReportInput {
  title: string
  description: string
  reproduction: string
  environment: string
}

interface BugReport {
  id: string
  title: string
  description: string
  reproduction: string
  environment: string
  severity: 'critical' | 'high' | 'medium' | 'low'
  category: BugCategory
  status: string
  createdAt: Date
  updatedAt: Date
  assignee: string | null
  labels: string[]
  relatedIssues: string[]
}

type BugCategory = 'functionality' | 'styling' | 'performance' | 'accessibility' | 'data-binding' | 'event-handling'

interface BugAnalysis {
  bugId: string
  severity: string
  category: BugCategory
  rootCause: string
  diagnosticResults: DiagnosticResult[]
  similarBugs: SimilarBug[]
  fixRecommendations: FixRecommendation[]
  estimatedEffort: 'small' | 'medium' | 'large'
  priority: number
}

interface DiagnosticTool {
  name: string
  description: string
  detector: (bug: BugReport) => Promise<DiagnosticResult>
  severity: 'low' | 'medium' | 'high'
}

interface DiagnosticResult {
  toolName: string
  issues: DiagnosticIssue[]
  confidence: number
}

interface DiagnosticIssue {
  type: string
  description: string
  severity: 'low' | 'medium' | 'high'
  location: string
  suggestion: string
}

interface FixPattern {
  name: string
  description: string
  pattern: string
  applicableIssues: string[]
}

interface SimilarBug {
  id: string
  title: string
  similarity: number
  status: string
}

interface FixRecommendation {
  type: string
  description: string
  pattern: string
  confidence: number
  effort: 'small' | 'medium' | 'large'
}

interface BugStatistics {
  total: number
  bySeverity: {
    critical: number
    high: number
    medium: number
    low: number
  }
  byCategory: Record<BugCategory, number>
  byStatus: Record<string, number>
  averageResolutionTime: number
}

1.2 功能增强设计系统

// 功能增强设计系统
class FeatureEnhancementSystem {
  private features: Map<string, FeatureRequest> = new Map()
  private designPatterns: Map<string, DesignPattern> = new Map()
  private implementationTemplates: Map<string, ImplementationTemplate> = new Map()
  
  constructor() {
    this.initializeDesignPatterns()
    this.initializeImplementationTemplates()
  }
  
  // 初始化设计模式
  private initializeDesignPatterns(): void {
    // 组件增强模式
    this.designPatterns.set('component-enhancement', {
      name: '组件功能增强',
      description: '为现有组件添加新功能',
      principles: [
        '向后兼容',
        '渐进式增强',
        '可配置性',
        '性能优先'
      ],
      steps: [
        '分析现有API',
        '设计新API',
        '实现核心功能',
        '添加配置选项',
        '编写测试',
        '更新文档'
      ],
      examples: [
        'Table组件添加虚拟滚动',
        'Select组件添加多选功能',
        'Form组件添加动态验证'
      ]
    })
    
    // 新组件模式
    this.designPatterns.set('new-component', {
      name: '新组件开发',
      description: '创建全新的组件',
      principles: [
        '单一职责',
        '可复用性',
        '一致性',
        '可访问性'
      ],
      steps: [
        '需求分析',
        'API设计',
        '原型开发',
        '样式设计',
        '功能实现',
        '测试覆盖',
        '文档编写'
      ],
      examples: [
        'Timeline组件',
        'Tour组件',
        'Watermark组件'
      ]
    })
    
    // 工具函数模式
    this.designPatterns.set('utility-enhancement', {
      name: '工具函数增强',
      description: '添加或改进工具函数',
      principles: [
        '纯函数',
        '类型安全',
        '性能优化',
        '易于测试'
      ],
      steps: [
        '确定需求',
        '设计接口',
        '实现逻辑',
        '类型定义',
        '单元测试',
        '性能测试'
      ],
      examples: [
        '日期处理函数',
        '数据转换函数',
        '验证工具函数'
      ]
    })
  }
  
  // 初始化实现模板
  private initializeImplementationTemplates(): void {
    // Vue 3 组件模板
    this.implementationTemplates.set('vue3-component', {
      name: 'Vue 3 组件模板',
      description: '标准的Vue 3组件实现模板',
      template: `
<template>
  <div 
    :class="componentClasses"
    v-bind="$attrs"
  >
    <slot />
  </div>
</template>

<script setup lang="ts">
import { computed, useAttrs, useSlots } from 'vue'
import { componentProps, componentEmits } from './component'

// Props定义
const props = defineProps(componentProps)

// Emits定义
const emit = defineEmits(componentEmits)

// 获取attrs和slots
const attrs = useAttrs()
const slots = useSlots()

// 计算样式类
const componentClasses = computed(() => {
  return [
    'el-component',
    {
      'el-component--disabled': props.disabled,
      'el-component--loading': props.loading
    }
  ]
})

// 组件方法
const handleAction = () => {
  emit('action', /* data */)
}

// 暴露给父组件的方法
defineExpose({
  handleAction
})
</script>
      `,
      variables: [
        'componentName',
        'componentProps',
        'componentEmits',
        'componentClasses'
      ]
    })
    
    // TypeScript 类型定义模板
    this.implementationTemplates.set('typescript-types', {
      name: 'TypeScript 类型定义',
      description: '组件的TypeScript类型定义',
      template: `
import type { ExtractPropTypes, PropType } from 'vue'

// 组件Props类型
export const componentProps = {
  // 基础属性
  disabled: {
    type: Boolean,
    default: false
  },
  loading: {
    type: Boolean,
    default: false
  },
  size: {
    type: String as PropType<'large' | 'default' | 'small'>,
    default: 'default'
  }
} as const

// 组件Emits类型
export const componentEmits = {
  action: (data: any) => true,
  change: (value: any) => true
}

// 导出Props类型
export type ComponentProps = ExtractPropTypes<typeof componentProps>

// 导出Emits类型
export type ComponentEmits = typeof componentEmits

// 组件实例类型
export interface ComponentInstance {
  handleAction: () => void
}
      `,
      variables: [
        'componentProps',
        'componentEmits',
        'ComponentProps',
        'ComponentEmits',
        'ComponentInstance'
      ]
    })
    
    // 测试模板
    this.implementationTemplates.set('test-template', {
      name: '组件测试模板',
      description: '组件的单元测试模板',
      template: `
import { mount } from '@vue/test-utils'
import { describe, it, expect, vi } from 'vitest'
import Component from '../component.vue'

describe('Component', () => {
  it('should render correctly', () => {
    const wrapper = mount(Component)
    expect(wrapper.exists()).toBe(true)
  })
  
  it('should emit action event', async () => {
    const wrapper = mount(Component)
    await wrapper.find('.action-button').trigger('click')
    expect(wrapper.emitted('action')).toBeTruthy()
  })
  
  it('should handle disabled state', () => {
    const wrapper = mount(Component, {
      props: { disabled: true }
    })
    expect(wrapper.classes()).toContain('el-component--disabled')
  })
  
  it('should handle loading state', () => {
    const wrapper = mount(Component, {
      props: { loading: true }
    })
    expect(wrapper.classes()).toContain('el-component--loading')
  })
})
      `,
      variables: [
        'Component',
        'componentName'
      ]
    })
  }
  
  // 分析功能请求
  async analyzeFeatureRequest(request: FeatureRequestInput): Promise<FeatureAnalysis> {
    const featureId = this.generateFeatureId()
    
    const feature: FeatureRequest = {
      id: featureId,
      title: request.title,
      description: request.description,
      motivation: request.motivation,
      userStories: request.userStories,
      acceptanceCriteria: request.acceptanceCriteria,
      priority: this.calculateFeaturePriority(request),
      complexity: this.assessComplexity(request),
      impact: this.assessImpact(request),
      status: 'analyzing',
      createdAt: new Date(),
      updatedAt: new Date(),
      assignee: null,
      labels: [],
      dependencies: []
    }
    
    this.features.set(featureId, feature)
    
    // 分析设计模式
    const applicablePatterns = this.identifyApplicablePatterns(feature)
    
    // 分析技术要求
    const technicalRequirements = this.analyzeTechnicalRequirements(feature)
    
    // 估算工作量
    const effortEstimate = this.estimateEffort(feature, technicalRequirements)
    
    // 识别风险
    const risks = this.identifyRisks(feature, technicalRequirements)
    
    // 生成实现计划
    const implementationPlan = this.generateImplementationPlan(feature, applicablePatterns)
    
    const analysis: FeatureAnalysis = {
      featureId,
      priority: feature.priority,
      complexity: feature.complexity,
      impact: feature.impact,
      applicablePatterns,
      technicalRequirements,
      effortEstimate,
      risks,
      implementationPlan,
      timeline: this.calculateTimeline(effortEstimate)
    }
    
    feature.status = 'analyzed'
    feature.updatedAt = new Date()
    
    return analysis
  }
  
  // 生成功能ID
  private generateFeatureId(): string {
    return `feature-${Date.now()}-${Math.random().toString(36).substr(2, 8)}`
  }
  
  // 计算功能优先级
  private calculateFeaturePriority(request: FeatureRequestInput): 'low' | 'medium' | 'high' | 'critical' {
    const content = `${request.title} ${request.description} ${request.motivation}`.toLowerCase()
    
    // 关键词检测
    const criticalKeywords = ['security', 'accessibility', 'breaking', 'urgent']
    const highKeywords = ['performance', 'user experience', 'important', 'needed']
    const mediumKeywords = ['improvement', 'enhancement', 'feature']
    
    if (criticalKeywords.some(keyword => content.includes(keyword))) {
      return 'critical'
    }
    
    if (highKeywords.some(keyword => content.includes(keyword))) {
      return 'high'
    }
    
    if (mediumKeywords.some(keyword => content.includes(keyword))) {
      return 'medium'
    }
    
    return 'low'
  }
  
  // 评估复杂度
  private assessComplexity(request: FeatureRequestInput): 'simple' | 'moderate' | 'complex' | 'very-complex' {
    const factors = {
      descriptionLength: request.description.length,
      userStoriesCount: request.userStories.length,
      criteriaCount: request.acceptanceCriteria.length,
      hasBreakingChanges: request.description.toLowerCase().includes('breaking'),
      hasNewAPI: request.description.toLowerCase().includes('api'),
      hasNewComponent: request.description.toLowerCase().includes('new component')
    }
    
    let complexityScore = 0
    
    if (factors.descriptionLength > 1000) complexityScore += 2
    if (factors.userStoriesCount > 5) complexityScore += 2
    if (factors.criteriaCount > 10) complexityScore += 2
    if (factors.hasBreakingChanges) complexityScore += 3
    if (factors.hasNewAPI) complexityScore += 2
    if (factors.hasNewComponent) complexityScore += 3
    
    if (complexityScore >= 8) return 'very-complex'
    if (complexityScore >= 5) return 'complex'
    if (complexityScore >= 2) return 'moderate'
    return 'simple'
  }
  
  // 评估影响
  private assessImpact(request: FeatureRequestInput): 'low' | 'medium' | 'high' | 'very-high' {
    const content = `${request.description} ${request.motivation}`.toLowerCase()
    
    let impactScore = 0
    
    // 影响范围
    if (content.includes('all components')) impactScore += 4
    else if (content.includes('multiple components')) impactScore += 3
    else if (content.includes('single component')) impactScore += 1
    
    // 用户影响
    if (content.includes('all users')) impactScore += 3
    else if (content.includes('many users')) impactScore += 2
    else if (content.includes('some users')) impactScore += 1
    
    // API变更
    if (content.includes('breaking change')) impactScore += 4
    else if (content.includes('api change')) impactScore += 2
    
    if (impactScore >= 8) return 'very-high'
    if (impactScore >= 5) return 'high'
    if (impactScore >= 2) return 'medium'
    return 'low'
  }
  
  // 识别适用的设计模式
  private identifyApplicablePatterns(feature: FeatureRequest): ApplicablePattern[] {
    const patterns: ApplicablePattern[] = []
    const content = `${feature.title} ${feature.description}`.toLowerCase()
    
    for (const [key, pattern] of this.designPatterns) {
      let relevance = 0
      
      // 基于关键词计算相关性
      if (content.includes('component') && key === 'component-enhancement') {
        relevance = 0.8
      } else if (content.includes('new') && content.includes('component') && key === 'new-component') {
        relevance = 0.9
      } else if (content.includes('utility') || content.includes('function') && key === 'utility-enhancement') {
        relevance = 0.7
      }
      
      if (relevance > 0.5) {
        patterns.push({
          pattern,
          relevance,
          reasoning: this.generatePatternReasoning(pattern, feature)
        })
      }
    }
    
    return patterns.sort((a, b) => b.relevance - a.relevance)
  }
  
  // 生成模式推理
  private generatePatternReasoning(pattern: DesignPattern, feature: FeatureRequest): string {
    return `基于功能描述"${feature.title}"，推荐使用${pattern.name}模式，因为它符合${pattern.principles.join('、')}的设计原则。`
  }
  
  // 分析技术要求
  private analyzeTechnicalRequirements(feature: FeatureRequest): TechnicalRequirement[] {
    const requirements: TechnicalRequirement[] = []
    const content = `${feature.description} ${feature.userStories.join(' ')}`.toLowerCase()
    
    // Vue 3 相关
    if (content.includes('reactive') || content.includes('computed') || content.includes('watch')) {
      requirements.push({
        category: 'vue3',
        description: 'Vue 3 Composition API',
        importance: 'high',
        details: ['使用ref/reactive', '实现computed属性', '添加watch监听器']
      })
    }
    
    // TypeScript 相关
    if (content.includes('type') || content.includes('interface')) {
      requirements.push({
        category: 'typescript',
        description: 'TypeScript 类型定义',
        importance: 'high',
        details: ['定义Props类型', '定义Emits类型', '导出组件实例类型']
      })
    }
    
    // 样式相关
    if (content.includes('style') || content.includes('theme') || content.includes('css')) {
      requirements.push({
        category: 'styling',
        description: '样式系统集成',
        importance: 'medium',
        details: ['遵循设计规范', '支持主题定制', '响应式设计']
      })
    }
    
    // 无障碍相关
    if (content.includes('accessibility') || content.includes('a11y')) {
      requirements.push({
        category: 'accessibility',
        description: '无障碍访问支持',
        importance: 'high',
        details: ['ARIA属性', '键盘导航', '屏幕阅读器支持']
      })
    }
    
    // 测试相关
    requirements.push({
      category: 'testing',
      description: '测试覆盖',
      importance: 'high',
      details: ['单元测试', '集成测试', 'E2E测试']
    })
    
    return requirements
  }
  
  // 估算工作量
  private estimateEffort(
    feature: FeatureRequest, 
    requirements: TechnicalRequirement[]
  ): EffortEstimate {
    let baseHours = 0
    
    // 基于复杂度的基础工时
    switch (feature.complexity) {
      case 'simple':
        baseHours = 8
        break
      case 'moderate':
        baseHours = 24
        break
      case 'complex':
        baseHours = 56
        break
      case 'very-complex':
        baseHours = 120
        break
    }
    
    // 基于技术要求调整
    const requirementMultiplier = requirements.reduce((multiplier, req) => {
      switch (req.importance) {
        case 'high':
          return multiplier + 0.3
        case 'medium':
          return multiplier + 0.2
        case 'low':
          return multiplier + 0.1
        default:
          return multiplier
      }
    }, 1)
    
    const totalHours = Math.ceil(baseHours * requirementMultiplier)
    
    return {
      development: Math.ceil(totalHours * 0.6),
      testing: Math.ceil(totalHours * 0.2),
      documentation: Math.ceil(totalHours * 0.1),
      review: Math.ceil(totalHours * 0.1),
      total: totalHours
    }
  }
  
  // 识别风险
  private identifyRisks(
    feature: FeatureRequest, 
    requirements: TechnicalRequirement[]
  ): Risk[] {
    const risks: Risk[] = []
    
    // 复杂度风险
    if (feature.complexity === 'very-complex') {
      risks.push({
        type: 'complexity',
        description: '功能复杂度过高，可能导致开发周期延长',
        probability: 'high',
        impact: 'medium',
        mitigation: '分阶段实现，先完成核心功能'
      })
    }
    
    // 兼容性风险
    if (feature.description.toLowerCase().includes('breaking')) {
      risks.push({
        type: 'compatibility',
        description: '可能引入破坏性变更',
        probability: 'medium',
        impact: 'high',
        mitigation: '提供迁移指南和向后兼容选项'
      })
    }
    
    // 性能风险
    if (feature.description.toLowerCase().includes('performance')) {
      risks.push({
        type: 'performance',
        description: '可能影响组件性能',
        probability: 'medium',
        impact: 'medium',
        mitigation: '进行性能测试和优化'
      })
    }
    
    // 测试风险
    const hasTestingRequirement = requirements.some(r => r.category === 'testing')
    if (!hasTestingRequirement) {
      risks.push({
        type: 'testing',
        description: '测试覆盖不足',
        probability: 'high',
        impact: 'medium',
        mitigation: '制定详细的测试计划'
      })
    }
    
    return risks
  }
  
  // 生成实现计划
  private generateImplementationPlan(
    feature: FeatureRequest, 
    patterns: ApplicablePattern[]
  ): ImplementationPlan {
    const phases: ImplementationPhase[] = []
    
    // 设计阶段
    phases.push({
      name: 'design',
      title: '设计阶段',
      tasks: [
        'API设计',
        '原型开发',
        '技术方案确定',
        '设计评审'
      ],
      duration: 3,
      dependencies: []
    })
    
    // 开发阶段
    phases.push({
      name: 'development',
      title: '开发阶段',
      tasks: [
        '核心功能实现',
        'TypeScript类型定义',
        '样式开发',
        '无障碍支持'
      ],
      duration: this.calculateDevelopmentDuration(feature),
      dependencies: ['design']
    })
    
    // 测试阶段
    phases.push({
      name: 'testing',
      title: '测试阶段',
      tasks: [
        '单元测试编写',
        '集成测试',
        '性能测试',
        'E2E测试'
      ],
      duration: 2,
      dependencies: ['development']
    })
    
    // 文档阶段
    phases.push({
      name: 'documentation',
      title: '文档阶段',
      tasks: [
        'API文档编写',
        '使用示例',
        '迁移指南',
        '发布说明'
      ],
      duration: 1,
      dependencies: ['testing']
    })
    
    return {
      phases,
      totalDuration: phases.reduce((sum, phase) => sum + phase.duration, 0),
      criticalPath: this.calculateCriticalPath(phases)
    }
  }
  
  // 计算开发阶段持续时间
  private calculateDevelopmentDuration(feature: FeatureRequest): number {
    switch (feature.complexity) {
      case 'simple':
        return 2
      case 'moderate':
        return 5
      case 'complex':
        return 10
      case 'very-complex':
        return 20
      default:
        return 5
    }
  }
  
  // 计算关键路径
  private calculateCriticalPath(phases: ImplementationPhase[]): string[] {
    // 简化实现，返回所有阶段
    return phases.map(phase => phase.name)
  }
  
  // 计算时间线
  private calculateTimeline(effort: EffortEstimate): Timeline {
    const workingDaysPerWeek = 5
    const hoursPerDay = 8
    
    const totalDays = Math.ceil(effort.total / hoursPerDay)
    const totalWeeks = Math.ceil(totalDays / workingDaysPerWeek)
    
    const startDate = new Date()
    const endDate = new Date(startDate)
    endDate.setDate(endDate.getDate() + totalDays)
    
    return {
      startDate,
      endDate,
      totalDays,
      totalWeeks,
      milestones: this.generateMilestones(startDate, totalDays)
    }
  }
  
  // 生成里程碑
  private generateMilestones(startDate: Date, totalDays: number): Milestone[] {
    const milestones: Milestone[] = []
    
    // 设计完成
    const designComplete = new Date(startDate)
    designComplete.setDate(designComplete.getDate() + Math.ceil(totalDays * 0.2))
    milestones.push({
      name: 'design-complete',
      title: '设计完成',
      date: designComplete,
      description: 'API设计和技术方案确定'
    })
    
    // 开发完成
    const developmentComplete = new Date(startDate)
    developmentComplete.setDate(developmentComplete.getDate() + Math.ceil(totalDays * 0.7))
    milestones.push({
      name: 'development-complete',
      title: '开发完成',
      date: developmentComplete,
      description: '核心功能实现完成'
    })
    
    // 测试完成
    const testingComplete = new Date(startDate)
    testingComplete.setDate(testingComplete.getDate() + Math.ceil(totalDays * 0.9))
    milestones.push({
      name: 'testing-complete',
      title: '测试完成',
      date: testingComplete,
      description: '所有测试通过'
    })
    
    // 发布就绪
    const releaseReady = new Date(startDate)
    releaseReady.setDate(releaseReady.getDate() + totalDays)
    milestones.push({
      name: 'release-ready',
      title: '发布就绪',
      date: releaseReady,
      description: '功能完成，文档齐全，可以发布'
    })
    
    return milestones
  }
  
  // 生成代码模板
  generateCodeTemplate(
    featureId: string, 
    templateType: string, 
    variables: Record<string, string>
  ): string {
    const feature = this.features.get(featureId)
    if (!feature) throw new Error(`Feature ${featureId} not found`)
    
    const template = this.implementationTemplates.get(templateType)
    if (!template) throw new Error(`Template ${templateType} not found`)
    
    let code = template.template
    
    // 替换变量
    for (const [key, value] of Object.entries(variables)) {
      const regex = new RegExp(`\\$\\{${key}\\}|${key}`, 'g')
      code = code.replace(regex, value)
    }
    
    return code
  }
  
  // 获取功能统计
  getFeatureStatistics(): FeatureStatistics {
    const features = Array.from(this.features.values())
    
    return {
      total: features.length,
      byPriority: {
        critical: features.filter(f => f.priority === 'critical').length,
        high: features.filter(f => f.priority === 'high').length,
        medium: features.filter(f => f.priority === 'medium').length,
        low: features.filter(f => f.priority === 'low').length
      },
      byComplexity: {
        simple: features.filter(f => f.complexity === 'simple').length,
        moderate: features.filter(f => f.complexity === 'moderate').length,
        complex: features.filter(f => f.complexity === 'complex').length,
        'very-complex': features.filter(f => f.complexity === 'very-complex').length
      },
      byStatus: this.groupFeaturesByStatus(features),
      averageImplementationTime: this.calculateAverageImplementationTime(features)
    }
  }
  
  // 按状态分组功能
  private groupFeaturesByStatus(features: FeatureRequest[]): Record<string, number> {
    const statuses: Record<string, number> = {}
    
    features.forEach(feature => {
      statuses[feature.status] = (statuses[feature.status] || 0) + 1
    })
    
    return statuses
  }
  
  // 计算平均实现时间
  private calculateAverageImplementationTime(features: FeatureRequest[]): number {
    const implementedFeatures = features.filter(f => f.status === 'implemented')
    
    if (implementedFeatures.length === 0) return 0
    
    const totalTime = implementedFeatures.reduce((sum, feature) => {
      const implementationTime = feature.updatedAt.getTime() - feature.createdAt.getTime()
      return sum + implementationTime
    }, 0)
    
    return totalTime / implementedFeatures.length / (1000 * 60 * 60 * 24) // 转换为天
  }
}

// 类型定义
interface FeatureRequestInput {
  title: string
  description: string
  motivation: string
  userStories: string[]
  acceptanceCriteria: string[]
}

interface FeatureRequest {
  id: string
  title: string
  description: string
  motivation: string
  userStories: string[]
  acceptanceCriteria: string[]
  priority: 'low' | 'medium' | 'high' | 'critical'
  complexity: 'simple' | 'moderate' | 'complex' | 'very-complex'
  impact: 'low' | 'medium' | 'high' | 'very-high'
  status: string
  createdAt: Date
  updatedAt: Date
  assignee: string | null
  labels: string[]
  dependencies: string[]
}

interface FeatureAnalysis {
  featureId: string
  priority: string
  complexity: string
  impact: string
  applicablePatterns: ApplicablePattern[]
  technicalRequirements: TechnicalRequirement[]
  effortEstimate: EffortEstimate
  risks: Risk[]
  implementationPlan: ImplementationPlan
  timeline: Timeline
}

interface DesignPattern {
  name: string
  description: string
  principles: string[]
  steps: string[]
  examples: string[]
}

interface ImplementationTemplate {
  name: string
  description: string
  template: string
  variables: string[]
}

interface ApplicablePattern {
  pattern: DesignPattern
  relevance: number
  reasoning: string
}

interface TechnicalRequirement {
  category: string
  description: string
  importance: 'low' | 'medium' | 'high'
  details: string[]
}

interface EffortEstimate {
  development: number
  testing: number
  documentation: number
  review: number
  total: number
}

interface Risk {
  type: string
  description: string
  probability: 'low' | 'medium' | 'high'
  impact: 'low' | 'medium' | 'high'
  mitigation: string
}

interface ImplementationPlan {
  phases: ImplementationPhase[]
  totalDuration: number
  criticalPath: string[]
}

interface ImplementationPhase {
  name: string
  title: string
  tasks: string[]
  duration: number
  dependencies: string[]
}

interface Timeline {
  startDate: Date
  endDate: Date
  totalDays: number
  totalWeeks: number
  milestones: Milestone[]
}

interface Milestone {
  name: string
  title: string
  date: Date
  description: string
}

interface FeatureStatistics {
  total: number
  byPriority: {
    critical: number
    high: number
    medium: number
    low: number
  }
  byComplexity: {
    simple: number
    moderate: number
    complex: number
    'very-complex': number
  }
  byStatus: Record<string, number>
  averageImplementationTime: number
}

2. 代码质量与测试标准

2.1 代码质量检查系统

// 代码质量检查系统
class CodeQualityChecker {
  private rules: Map<string, QualityRule> = new Map()
  private metrics: QualityMetrics = {
    complexity: 0,
    maintainability: 0,
    testCoverage: 0,
    documentation: 0,
    performance: 0
  }
  
  constructor() {
    this.initializeRules()
  }
  
  // 初始化质量规则
  private initializeRules(): void {
    // 复杂度规则
    this.rules.set('complexity', {
      name: '代码复杂度',
      description: '检查函数和组件的复杂度',
      severity: 'medium',
      checker: this.checkComplexity.bind(this),
      threshold: 10
    })
    
    // 可维护性规则
    this.rules.set('maintainability', {
      name: '可维护性',
      description: '检查代码的可维护性',
      severity: 'high',
      checker: this.checkMaintainability.bind(this),
      threshold: 80
    })
    
    // 测试覆盖率规则
    this.rules.set('test-coverage', {
      name: '测试覆盖率',
      description: '检查测试覆盖率',
      severity: 'high',
      checker: this.checkTestCoverage.bind(this),
      threshold: 90
    })
    
    // 文档完整性规则
    this.rules.set('documentation', {
      name: '文档完整性',
      description: '检查文档的完整性',
      severity: 'medium',
      checker: this.checkDocumentation.bind(this),
      threshold: 85
    })
    
    // 性能规则
    this.rules.set('performance', {
      name: '性能标准',
      description: '检查性能相关指标',
      severity: 'medium',
      checker: this.checkPerformance.bind(this),
      threshold: 75
    })
  }
  
  // 检查代码质量
  async checkQuality(codebase: Codebase): Promise<QualityReport> {
    const violations: QualityViolation[] = []
    const metrics: QualityMetrics = {
      complexity: 0,
      maintainability: 0,
      testCoverage: 0,
      documentation: 0,
      performance: 0
    }
    
    for (const [ruleId, rule] of this.rules) {
      try {
        const result = await rule.checker(codebase)
        metrics[ruleId as keyof QualityMetrics] = result.score
        
        if (result.score < rule.threshold) {
          violations.push({
            rule: ruleId,
            severity: rule.severity,
            message: `${rule.name}: ${result.score} < ${rule.threshold}`,
            details: result.details,
            suggestions: result.suggestions
          })
        }
      } catch (error) {
        console.warn(`Quality rule ${ruleId} failed:`, error)
      }
    }
    
    const overallScore = this.calculateOverallScore(metrics)
    
    return {
      overallScore,
      metrics,
      violations,
      recommendations: this.generateRecommendations(violations),
      timestamp: new Date()
    }
  }
  
  // 检查复杂度
  private async checkComplexity(codebase: Codebase): Promise<QualityCheckResult> {
    let totalComplexity = 0
    let functionCount = 0
    const details: string[] = []
    
    // 模拟复杂度检查
    codebase.files.forEach(file => {
      const functions = this.extractFunctions(file.content)
      functions.forEach(func => {
        const complexity = this.calculateCyclomaticComplexity(func)
        totalComplexity += complexity
        functionCount++
        
        if (complexity > 10) {
          details.push(`${file.path}:${func.name} - 复杂度: ${complexity}`)
        }
      })
    })
    
    const averageComplexity = functionCount > 0 ? totalComplexity / functionCount : 0
    const score = Math.max(0, 100 - averageComplexity * 5)
    
    return {
      score,
      details,
      suggestions: [
        '将复杂函数拆分为更小的函数',
        '使用早期返回减少嵌套',
        '提取公共逻辑到工具函数'
      ]
    }
  }
  
  // 提取函数
  private extractFunctions(content: string): FunctionInfo[] {
    const functions: FunctionInfo[] = []
    
    // 简化的函数提取逻辑
    const functionRegex = /function\s+(\w+)|const\s+(\w+)\s*=.*=>|\s+(\w+)\s*\(/g
    let match
    
    while ((match = functionRegex.exec(content)) !== null) {
      const name = match[1] || match[2] || match[3]
      if (name) {
        functions.push({
          name,
          startLine: content.substring(0, match.index).split('\n').length,
          content: this.extractFunctionBody(content, match.index)
        })
      }
    }
    
    return functions
  }
  
  // 提取函数体
  private extractFunctionBody(content: string, startIndex: number): string {
    // 简化实现，实际应该解析AST
    let braceCount = 0
    let inFunction = false
    let functionBody = ''
    
    for (let i = startIndex; i < content.length; i++) {
      const char = content[i]
      
      if (char === '{') {
        braceCount++
        inFunction = true
      }
      
      if (inFunction) {
        functionBody += char
      }
      
      if (char === '}') {
        braceCount--
        if (braceCount === 0 && inFunction) {
          break
        }
      }
    }
    
    return functionBody
  }
  
  // 计算圈复杂度
  private calculateCyclomaticComplexity(func: FunctionInfo): number {
    const content = func.content
    let complexity = 1 // 基础复杂度
    
    // 计算决策点
    const decisionPoints = [
      /\bif\b/g,
      /\belse\s+if\b/g,
      /\bwhile\b/g,
      /\bfor\b/g,
      /\bswitch\b/g,
      /\bcase\b/g,
      /\bcatch\b/g,
      /\b&&\b/g,
      /\b\|\|\b/g,
      /\?/g
    ]
    
    decisionPoints.forEach(regex => {
      const matches = content.match(regex)
      if (matches) {
        complexity += matches.length
      }
    })
    
    return complexity
  }
  
  // 检查可维护性
  private async checkMaintainability(codebase: Codebase): Promise<QualityCheckResult> {
    let score = 100
    const details: string[] = []
    const suggestions: string[] = []
    
    codebase.files.forEach(file => {
      // 检查文件长度
      const lineCount = file.content.split('\n').length
      if (lineCount > 500) {
        score -= 5
        details.push(`${file.path} - 文件过长: ${lineCount} 行`)
        suggestions.push('将大文件拆分为更小的模块')
      }
      
      // 检查函数长度
      const functions = this.extractFunctions(file.content)
      functions.forEach(func => {
        const funcLineCount = func.content.split('\n').length
        if (funcLineCount > 50) {
          score -= 3
          details.push(`${file.path}:${func.name} - 函数过长: ${funcLineCount} 行`)
          suggestions.push('将长函数拆分为更小的函数')
        }
      })
      
      // 检查重复代码
      const duplicateScore = this.checkDuplicateCode(file.content)
      score -= duplicateScore
      if (duplicateScore > 0) {
        details.push(`${file.path} - 发现重复代码`)
        suggestions.push('提取重复代码到公共函数')
      }
    })
    
    return {
      score: Math.max(0, score),
      details,
      suggestions: [...new Set(suggestions)]
    }
  }
  
  // 检查重复代码
  private checkDuplicateCode(content: string): number {
    const lines = content.split('\n')
    const lineMap = new Map<string, number>()
    let duplicateLines = 0
    
    lines.forEach(line => {
      const trimmedLine = line.trim()
      if (trimmedLine.length > 10) { // 忽略短行
        const count = lineMap.get(trimmedLine) || 0
        lineMap.set(trimmedLine, count + 1)
        if (count > 0) {
          duplicateLines++
        }
      }
    })
    
    return Math.min(20, duplicateLines * 2) // 最多扣20分
  }
  
  // 检查测试覆盖率
  private async checkTestCoverage(codebase: Codebase): Promise<QualityCheckResult> {
    const sourceFiles = codebase.files.filter(f => 
      f.path.endsWith('.vue') || f.path.endsWith('.ts') || f.path.endsWith('.js')
    )
    const testFiles = codebase.files.filter(f => 
      f.path.includes('.test.') || f.path.includes('.spec.')
    )
    
    const sourceLineCount = sourceFiles.reduce((sum, file) => 
      sum + file.content.split('\n').length, 0
    )
    const testLineCount = testFiles.reduce((sum, file) => 
      sum + file.content.split('\n').length, 0
    )
    
    // 简化的覆盖率计算
    const coverageRatio = sourceLineCount > 0 ? testLineCount / sourceLineCount : 0
    const score = Math.min(100, coverageRatio * 100)
    
    const details = [
      `源代码行数: ${sourceLineCount}`,
      `测试代码行数: ${testLineCount}`,
      `覆盖率估算: ${(score).toFixed(1)}%`
    ]
    
    const suggestions = [
      '为核心功能添加单元测试',
      '增加边界条件测试',
      '添加集成测试',
      '使用测试覆盖率工具进行精确测量'
    ]
    
    return { score, details, suggestions }
  }
  
  // 检查文档完整性
  private async checkDocumentation(codebase: Codebase): Promise<QualityCheckResult> {
    let score = 100
    const details: string[] = []
    const suggestions: string[] = []
    
    // 检查README文件
    const hasReadme = codebase.files.some(f => 
      f.path.toLowerCase().includes('readme')
    )
    if (!hasReadme) {
      score -= 20
      details.push('缺少README文件')
      suggestions.push('添加项目README文档')
    }
    
    // 检查API文档
    const hasApiDocs = codebase.files.some(f => 
      f.path.includes('docs/') || f.content.includes('@param') || f.content.includes('/**')
    )
    if (!hasApiDocs) {
      score -= 15
      details.push('缺少API文档')
      suggestions.push('为公共API添加JSDoc注释')
    }
    
    // 检查组件文档
    const vueFiles = codebase.files.filter(f => f.path.endsWith('.vue'))
    vueFiles.forEach(file => {
      if (!file.content.includes('<!--') && !file.content.includes('/**')) {
        score -= 5
        details.push(`${file.path} - 缺少组件文档`)
        suggestions.push('为组件添加使用说明和示例')
      }
    })
    
    return {
      score: Math.max(0, score),
      details,
      suggestions: [...new Set(suggestions)]
    }
  }
  
  // 检查性能
  private async checkPerformance(codebase: Codebase): Promise<QualityCheckResult> {
    let score = 100
    const details: string[] = []
    const suggestions: string[] = []
    
    codebase.files.forEach(file => {
      const content = file.content
      
      // 检查潜在的性能问题
      if (content.includes('document.querySelector')) {
        score -= 5
        details.push(`${file.path} - 使用了document.querySelector`)
        suggestions.push('考虑使用ref或模板引用')
      }
      
      if (content.includes('setInterval') && !content.includes('clearInterval')) {
        score -= 10
        details.push(`${file.path} - 定时器可能未清理`)
        suggestions.push('确保在组件卸载时清理定时器')
      }
      
      if (content.includes('watch') && content.includes('deep: true')) {
        score -= 5
        details.push(`${file.path} - 使用了深度监听`)
        suggestions.push('考虑使用更精确的监听策略')
      }
      
      // 检查大数据处理
      if (content.includes('v-for') && content.includes('large') || content.includes('1000')) {
        score -= 10
        details.push(`${file.path} - 可能存在大数据渲染`)
        suggestions.push('考虑使用虚拟滚动或分页')
      }
    })
    
    return {
      score: Math.max(0, score),
      details,
      suggestions: [...new Set(suggestions)]
    }
  }
  
  // 计算总体分数
  private calculateOverallScore(metrics: QualityMetrics): number {
    const weights = {
      complexity: 0.2,
      maintainability: 0.25,
      testCoverage: 0.25,
      documentation: 0.15,
      performance: 0.15
    }
    
    let totalScore = 0
    let totalWeight = 0
    
    Object.entries(weights).forEach(([key, weight]) => {
      const score = metrics[key as keyof QualityMetrics]
      if (score !== undefined) {
        totalScore += score * weight
        totalWeight += weight
      }
    })
    
    return totalWeight > 0 ? totalScore / totalWeight : 0
  }
  
  // 生成建议
  private generateRecommendations(violations: QualityViolation[]): string[] {
    const recommendations: string[] = []
    
    // 基于违规类型生成建议
    const violationTypes = new Set(violations.map(v => v.rule))
    
    if (violationTypes.has('complexity')) {
      recommendations.push('重构复杂函数，提高代码可读性')
    }
    
    if (violationTypes.has('test-coverage')) {
      recommendations.push('增加测试覆盖率，确保代码质量')
    }
    
    if (violationTypes.has('documentation')) {
      recommendations.push('完善文档，提高代码可维护性')
    }
    
    if (violationTypes.has('performance')) {
      recommendations.push('优化性能瓶颈，提升用户体验')
    }
    
    // 通用建议
    if (violations.length > 5) {
      recommendations.push('建议分阶段解决质量问题，优先处理高严重性问题')
    }
    
    return recommendations
  }
}

// 类型定义
interface QualityRule {
  name: string
  description: string
  severity: 'low' | 'medium' | 'high'
  checker: (codebase: Codebase) => Promise<QualityCheckResult>
  threshold: number
}

interface QualityMetrics {
  complexity: number
  maintainability: number
  testCoverage: number
  documentation: number
  performance: number
}

interface QualityCheckResult {
  score: number
  details: string[]
  suggestions: string[]
}

interface QualityViolation {
  rule: string
  severity: 'low' | 'medium' | 'high'
  message: string
  details: string[]
  suggestions: string[]
}

interface QualityReport {
  overallScore: number
  metrics: QualityMetrics
  violations: QualityViolation[]
  recommendations: string[]
  timestamp: Date
}

interface Codebase {
  files: CodeFile[]
}

interface CodeFile {
  path: string
  content: string
}

interface FunctionInfo {
  name: string
  startLine: number
  content: string
}

3. 实践练习

1. Bug 修复实践：

   • 选择一个真实的 Element Plus Bug
   • 使用 Bug 分析系统进行诊断
   • 实施修复并编写测试
   • 提交高质量的 Pull Request

2. 功能增强实践：

   • 设计一个新的组件功能
   • 使用功能增强设计系统进行分析
   • 实现功能并确保代码质量
   • 编写完整的文档和示例

3. 代码质量提升：

   • 对现有代码进行质量检查
   • 根据报告改进代码质量
   • 增加测试覆盖率
   • 完善文档

4. 学习资源

• Element Plus Issues
• Vue.js Testing Guide
• TypeScript Handbook
• Clean Code Principles
• Test-Driven Development

5. 作业

• 完成一个 Bug 修复的完整流程
• 设计并实现一个功能增强
• 建立代码质量检查流程
• 编写高质量的测试用例
• 撰写技术文档和使用指南

总结

通过第86天的学习，我们全面掌握了：

1. Bug 修复流程：从问题诊断到解决方案实施的完整流程
2. 功能增强设计：系统性的功能设计和实现方法
3. 代码质量标准：建立了完整的代码质量检查体系
4. 测试策略：掌握了全面的测试方法和最佳实践

这些技能将帮助我们成为优秀的开源贡献者，为 Element Plus 项目提供高质量的代码贡献。