pull-request-title-convention.yml

name: Enforce PR Title Format with Comments

on:
  pull_request:
    types: [opened, edited, synchronize]

jobs:
  validate-title:
    runs-on: ubuntu-latest

    steps:
      - name: Check PR Title and Manage Comments
        uses: actions/github-script@v6
        with:
          script: |
            const prTitle = context.payload.pull_request.title;
            const prNumber = context.payload.pull_request.number;
            const repoOwner = context.repo.owner;
            const repoName = context.repo.repo;



            const validTitleRegex = /^(feat|fix|docs|style|refactor|perf|test|build|ci|chore|revert)(\([a-zA-Z0-9-_]+\))?:\s.+$/;
            const commentIdentifier = "**🔍 PR 제목 확인 봇**";

            const { data: comments } = await github.rest.issues.listComments({
              owner: repoOwner,
              repo: repoName,
              issue_number: prNumber,
            });

            const botComment = comments.find(comment => comment.body.includes(commentIdentifier));

            if (!validTitleRegex.test(prTitle)) {
              console.log("❌ Invalid PR title detected.");

              const invalidMessage = commentIdentifier + "\n\n" +
                "❌ PR 제목이 잘못되었습니다. 컨벤셔널 커밋 형식에 맞춰주세요.\n\n" +
                "예:\n" +
                "- feat: 새로운 로그인 기능 추가\n" +
                "- fix: 잘못된 API 호출 수정\n" +
                "- feat(react-native): React Native 관련 기능 추가\n\n" +
                "👉 참고: [컨벤셔널 커밋 가이드](https://www.conventionalcommits.org)";

              if (botComment) {
                console.log("🔄 Updating existing bot comment.");
                await github.rest.issues.updateComment({
                  owner: repoOwner,
                  repo: repoName,
                  comment_id: botComment.id,
                  body: invalidMessage,
                });
              } else {
                console.log("📝 Creating new bot comment.");
                await github.rest.issues.createComment({
                  owner: repoOwner,
                  repo: repoName,
                  issue_number: prNumber,
                  body: invalidMessage,
                });
              }

              throw new Error("Invalid PR title.");
            }

            console.log("✅ PR title is valid.");

            if (botComment) {
              console.log("🗑️ Deleting bot comment.");
              await github.rest.issues.deleteComment({
                owner: repoOwner,
                repo: repoName,
                comment_id: botComment.id,
              });
            }