name: Auto Reply to Pull Requests

on:
  pull_request:
    types: [opened]

jobs:
  auto-reply:
    runs-on: ubuntu-latest
    permissions:
      pull-requests: write
      contents: read
    steps:
      - name: Reply to PR
        uses: actions/github-script@v7
        with:
          script: |
            const prNumber = context.issue.number;
            const prTitle = context.payload.pull_request.title;
            const prAuthor = context.payload.pull_request.user.login;
            const prFiles = context.payload.pull_request.changed_files;
            
            let replyMessage = `🎉 Hi @${prAuthor}! 
            
            感谢您的贡献！您的Pull Request已经提交，我们会尽快进行代码审核。
            
            ## 📋 审核清单
            期间请确保以下项目已完成：
            - [ ] 代码符合项目规范和风格
            - [ ] 已测试新功能或修复
            - [ ] 更新了相关文档（如有需要）
            - [ ] 提交信息清晰明确
            
            ## 📊 PR 统计
            - 📁 修改文件数：${prFiles}
            - 🏷️ PR类型：${prTitle.toLowerCase().includes('fix') ? '🐛 Bug修复' : 
                            prTitle.toLowerCase().includes('feat') ? '✨ 新功能' :
                            prTitle.toLowerCase().includes('doc') ? '📖 文档更新' :
                            prTitle.toLowerCase().includes('refactor') ? '♻️ 重构' : '🔧 其他改进'}
            
            ## 🔄 下一步
            我们会在1-3个工作日内完成初步审核。如有问题会及时与您沟通。
            
            再次感谢您对项目的贡献！ 🙏`;
            
            await github.rest.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: prNumber,
              body: replyMessage
            });
      
      - name: Add PR Labels
        uses: actions/github-script@v7
        with:
          script: |
            const prTitle = context.payload.pull_request.title.toLowerCase();
            const labels = [];
            
            // 根据PR标题自动添加标签
            if (prTitle.includes('fix') || prTitle.includes('修复')) {
              labels.push('bug');
            }
            if (prTitle.includes('feat') || prTitle.includes('功能') || prTitle.includes('add')) {
              labels.push('enhancement');
            }
            if (prTitle.includes('doc') || prTitle.includes('文档')) {
              labels.push('documentation');
            }
            if (prTitle.includes('refactor') || prTitle.includes('重构')) {
              labels.push('refactor');
            }
            if (prTitle.includes('test') || prTitle.includes('测试')) {
              labels.push('test');
            }
            
            // 根据文件数量添加大小标签
            const fileCount = context.payload.pull_request.changed_files;
            if (fileCount <= 3) {
              labels.push('size/small');
            } else if (fileCount <= 10) {
              labels.push('size/medium');
            } else {
              labels.push('size/large');
            }
            
            if (labels.length > 0) {
              await github.rest.issues.addLabels({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                labels: labels
              });
            }