/**
 * Comment 解析器
 *
 * 解析 Issue Comments 中的标记，提取关键信息
 */

/**
 * 标记类型枚举
 */
export const MarkerType = {
  EXECUTE_DONE: 'EXECUTE_DONE',
  REVIEW_DONE: 'REVIEW_DONE',
  TEST_DONE: 'TEST_DONE',
  VERIFICATION_PASSED: 'VERIFICATION_PASSED',
  VERIFICATION_REJECTED: 'VERIFICATION_REJECTED',
  PROGRESS_UPDATE: 'PROGRESS_UPDATE',
  CONSISTENCY_ISSUE: 'CONSISTENCY_ISSUE'
}

/**
 * 解析完成标记
 *
 * @param {string} commentBody - Comment 内容
 * @returns {Object|null} 解析结果
 */
export function parseCompletionMarker(commentBody) {
  // 检测 EXECUTE_DONE
  if (commentBody.includes('EXECUTE_DONE')) {
    return {
      type: MarkerType.EXECUTE_DONE,
      status: 'completed',
      data: extractExecuteData(commentBody)
    }
  }

  // 检测 REVIEW_DONE
  if (commentBody.includes('REVIEW_DONE')) {
    return {
      type: MarkerType.REVIEW_DONE,
      status: 'completed',
      data: extractReviewData(commentBody)
    }
  }

  // 检测 TEST_DONE
  if (commentBody.includes('TEST_DONE')) {
    return {
      type: MarkerType.TEST_DONE,
      status: 'completed',
      data: extractTestData(commentBody)
    }
  }

  // 检测 VERIFICATION_PASSED
  if (commentBody.includes('VERIFICATION_PASSED')) {
    return {
      type: MarkerType.VERIFICATION_PASSED,
      status: 'completed',
      data: extractVerificationData(commentBody)
    }
  }

  // 检测 VERIFICATION_REJECTED
  if (commentBody.includes('VERIFICATION_REJECTED')) {
    return {
      type: MarkerType.VERIFICATION_REJECTED,
      status: 'failed',
      data: extractVerificationData(commentBody)
    }
  }

  // 检测 PROGRESS_UPDATE
  if (commentBody.includes('进度更新')) {
    return {
      type: MarkerType.PROGRESS_UPDATE,
      status: 'in_progress',
      data: extractProgressData(commentBody)
    }
  }

  // 检测 CONSISTENCY_ISSUE
  if (commentBody.includes('CONSISTENCY_ISSUE')) {
    return {
      type: MarkerType.CONSISTENCY_ISSUE,
      status: 'failed',
      data: extractDeviationData(commentBody)
    }
  }

  return null
}

/**
 * 提取 EXECUTE_DONE 数据
 */
function extractExecuteData(commentBody) {
  const deliverables = []
  const deliverableMatch = commentBody.match(/### 交付物\n([\s\S]*?)\n\n/)
  if (deliverableMatch) {
    const lines = deliverableMatch[1].split('\n')
    lines.forEach(line => {
      const match = line.match(/\d+\.\s*`([^`]+)`/)
      if (match) {
        deliverables.push(match[1])
      }
    })
  }

  const testLocalMatch = commentBody.match(/本地运行:\s*([✅❌])\s*(\w+)/)
  const coverageMatch = commentBody.match(/覆盖率:\s*([\d%]+)/)
  const executorMatch = commentBody.match(/\*\*执行者\*\*:\s*([^\n]+)/)
  const completedAtMatch = commentBody.match(/\*\*完成时间\*\*:\s*([^\n]+)/)

  return {
    deliverables,
    testStatus: {
      local: testLocalMatch ? `${testLocalMatch[1]} ${testLocalMatch[2]}` : 'UNKNOWN',
      coverage: coverageMatch ? coverageMatch[1] : '0%'
    },
    executor: executorMatch ? executorMatch[1].trim() : 'Execute Sub Agent',
    completedAt: completedAtMatch ? completedAtMatch[1].trim() : null
  }
}

/**
 * 提取 REVIEW_DONE 数据
 */
function extractReviewData(commentBody) {
  const verdictMatch = commentBody.match(/verdict=(\w+)/)
  const verdict = verdictMatch ? verdictMatch[1].toLowerCase() : 'unknown'

  const findings = []
  const findingsMatch = commentBody.match(/### 发现的问题\n([\s\S]*?)\n\n/)
  if (findingsMatch) {
    const lines = findingsMatch[1].split('\n')
    lines.forEach(line => {
      const match = line.match(/\d+\.\s*(.+)/)
      if (match) {
        findings.push(match[1].trim())
      }
    })
  }

  const suggestions = []
  const suggestionsMatch = commentBody.match(/### 改进建议\n([\s\S]*?)\n\n/)
  if (suggestionsMatch) {
    const lines = suggestionsMatch[1].split('\n')
    lines.forEach(line => {
      const match = line.match(/\d+\.\s*(.+)/)
      if (match) {
        suggestions.push(match[1].trim())
      }
    })
  }

  const reviewerMatch = commentBody.match(/\*\*审查者\*\*:\s*([^\n]+)/)
  const completedAtMatch = commentBody.match(/\*\*完成时间\*\*:\s*([^\n]+)/)

  return {
    verdict: verdict === 'approved' ? 'approved' : 'rejected',
    findings,
    suggestions,
    reviewer: reviewerMatch ? reviewerMatch[1].trim() : 'Review Sub Agent',
    completedAt: completedAtMatch ? completedAtMatch[1].trim() : null
  }
}

/**
 * 提取 TEST_DONE 数据
 */
function extractTestData(commentBody) {
  const resultMatch = commentBody.match(/result=(\w+)/)
  const coverageMatch = commentBody.match(/coverage=([\d%]+)/)
  const summaryMatch = commentBody.match(/### 测试摘要\n([\s\S]*?)\n\n/)

  const failures = []
  const failuresMatch = commentBody.match(/### 失败的测试\n([\s\S]*?)\n\n/)
  if (failuresMatch) {
    const lines = failuresMatch[1].split('\n')
    lines.forEach(line => {
      const match = line.match(/\d+\.\s*(.+)/)
      if (match) {
        failures.push(match[1].trim())
      }
    })
  }

  const testerMatch = commentBody.match(/\*\*测试者\*\*:\s*([^\n]+)/)
  const completedAtMatch = commentBody.match(/\*\*完成时间\*\*:\s*([^\n]+)/)

  return {
    result: resultMatch ? resultMatch[1].toLowerCase() : 'unknown',
    coverage: coverageMatch ? coverageMatch[1] : '0%',
    summary: summaryMatch ? summaryMatch[1].trim() : '',
    failures,
    tester: testerMatch ? testerMatch[1].trim() : 'Test Sub Agent',
    completedAt: completedAtMatch ? completedAtMatch[1].trim() : null
  }
}

/**
 * 提取 VERIFICATION 数据
 */
function extractVerificationData(commentBody) {
  // 提取三个检查结果
  const requirementDesignPassed = commentBody.includes('需求→设计: 通过')
  const designCodePassed = commentBody.includes('设计→编码: 通过')
  const requirementCodePassed = commentBody.includes('需求→编码: 通过')

  const allPassed = requirementDesignPassed && designCodePassed && requirementCodePassed

  const completedAtMatch = commentBody.match(/\*\*完成时间\*\*:\s*([^\n]+)/)

  return {
    requirementDesign: { passed: requirementDesignPassed },
    designCode: { passed: designCodePassed },
    requirementCode: { passed: requirementCodePassed },
    allPassed,
    verdict: allPassed ? 'approved' : 'rejected',
    completedAt: completedAtMatch ? completedAtMatch[1].trim() : null
  }
}

/**
 * 提取 PROGRESS_UPDATE 数据
 */
function extractProgressData(commentBody) {
  const progressMatch = commentBody.match(/\*\*进度\*\*:\s*(\d+)%/)
  const stageMatch = commentBody.match(/进度更新:\s*(\w+)\s*阶段/)

  const completed = []
  const completedMatch = commentBody.match(/## 已完成\n([\s\S]*?)\n\n/)
  if (completedMatch) {
    const lines = completedMatch[1].split('\n')
    lines.forEach(line => {
      const match = line.match/- ✅ (.+)/)
      if (match) {
        completed.push(match[1].trim())
      }
    })
  }

  const inProgress = []
  const inProgressMatch = commentBody.match(/## 进行中\n([\s\S]*?)\n\n/)
  if (inProgressMatch) {
    const lines = inProgressMatch[1].split('\n')
    lines.forEach(line => {
      const match = line.match/- 🔄 (.+)/)
      if (match) {
        inProgress.push(match[1].trim())
      }
    })
  }

  return {
    stage: stageMatch ? stageMatch[1] : 'Unknown',
    progress: progressMatch ? parseInt(progressMatch[1], 10) : 0,
    completed,
    inProgress
  }
}

/**
 * 提取 CONSISTENCY_ISSUE 数据
 */
function extractDeviationData(commentBody) {
  const typeMatch = commentBody.match(/问题:\s*(.+)\s*偏差/)
  const issueMatch = commentBody.match(/\*\*问题描述\*\*:\s*([^\n]+)/)
  const expectedMatch = commentBody.match(/\*\*预期\*\*:\s*([^\n]+)/)
  const actualMatch = commentBody.match(/\*\*实际\*\*:\s*([^\n]+)/)

  const actionRequired = []
  const actionMatch = commentBody.match(/### 处理要求\n([\s\S]*?)\n\n/)
  if (actionMatch) {
    const lines = actionMatch[1].split('\n')
    lines.forEach(line => {
      const match = line.match(/\d+\.\s*(.+)/)
      if (match) {
        actionRequired.push(match[1].trim())
      }
    })
  }

  return {
    type: typeMatch ? typeMatch[1].trim() : 'unknown',
    issue: issueMatch ? issueMatch[1].trim() : '',
    expected: expectedMatch ? expectedMatch[1].trim() : '',
    actual: actualMatch ? actualMatch[1].trim() : '',
    actionRequired
  }
}

/**
 * 查找最新的指定类型标记
 *
 * @param {Array<Object>} comments - Comments 数组
 * @param {string} markerType - 标记类型
 * @returns {Object|null} 最新的标记数据
 */
export function findLatestMarker(comments, markerType) {
  if (!comments || comments.length === 0) {
    return null
  }

  // 从后往前遍历（最新的在前）
  for (let i = comments.length - 1; i >= 0; i--) {
    const comment = comments[i]
    const parsed = parseCompletionMarker(comment.body || comment.content || '')

    if (parsed && parsed.type === markerType) {
      return {
        ...parsed,
        commentId: comment.id,
        createdAt: comment.created_at || comment.timestamp,
        author: comment.user?.login || comment.author || 'Unknown'
      }
    }
  }

  return null
}

/**
 * 检查指定标记是否存在
 *
 * @param {Array<Object>} comments - Comments 数组
 * @param {string} markerType - 标记类型
 * @returns {boolean} 是否存在
 */
export function hasMarker(comments, markerType) {
  return findLatestMarker(comments, markerType) !== null
}

/**
 * 获取所有标记的摘要
 *
 * @param {Array<Object>} comments - Comments 数组
 * @returns {Object} 标记摘要
 */
export function getMarkersSummary(comments) {
  const summary = {
    executeDone: findLatestMarker(comments, MarkerType.EXECUTE_DONE),
    reviewDone: findLatestMarker(comments, MarkerType.REVIEW_DONE),
    testDone: findLatestMarker(comments, MarkerType.TEST_DONE),
    verificationPassed: findLatestMarker(comments, MarkerType.VERIFICATION_PASSED),
    verificationRejected: findLatestMarker(comments, MarkerType.VERIFICATION_REJECTED),
    progressUpdate: findLatestMarker(comments, MarkerType.PROGRESS_UPDATE),
    consistencyIssue: findLatestMarker(comments, MarkerType.CONSISTENCY_ISSUE)
  }

  // 计算当前阶段状态
  summary.currentPhase = determineCurrentPhase(summary)

  return summary
}

/**
 * 确定当前阶段
 */
function determineCurrentPhase(summary) {
  if (summary.verificationPassed || summary.verificationRejected) {
    return 'completed'
  }

  if (summary.reviewDone && summary.testDone) {
    return 'verification'
  }

  if (summary.executeDone) {
    return 'review_and_test'
  }

  if (summary.progressUpdate) {
    return 'executing'
  }

  return 'pending'
}

/**
 * 导出所有解析函数
 */
export default {
  MarkerType,
  parseCompletionMarker,
  extractMarkerData: parseCompletionMarker,
  findLatestMarker,
  hasMarker,
  getMarkersSummary,
  determineCurrentPhase
}