detect_translate_conflicts.yml

name: Detect translation conflicts

on:
  pull_request:
    branches:
      - master

jobs:
  comment:
    runs-on: ubuntu-latest
    permissions:
      pull-requests: write
    steps:
      - name: Fetch repo
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: Setup git
        run: |
          git config --local user.email "action@github.com"
          git config --local user.name "SS220Manager"
          git config --local merge.conflictStyle zdiff3
      - name: Try merging
        continue-on-error: true
        run: |
          git merge origin/translate
      - name: Save merge results
        run: |
          {
            echo "MERGE_CONFLICTS<<EOF"
            git diff --name-only --diff-filter=U | while read file; do
              echo "<details>"
              echo "<summary>$file</summary>"
              echo -e "\n\`\`\`diff"
              git diff --diff-filter=U "$file" | sed -n '/<<<<<<</,/>>>>>>>/p'
              echo -e "\n\`\`\`"
              echo "</details>"
            done
            echo EOF
          } >> $GITHUB_ENV
      - name: Run script
        uses: actions/github-script@v7
        with:
          script: |
                  const { MERGE_CONFLICTS } = process.env;

                  const conflict_message_header = "This PR causes following conflicts on translate branch:\n";
                  const issue_body = `${conflict_message_header}${MERGE_CONFLICTS}`;

                  const comments = await github.rest.issues.listComments({
                    owner: context.repo.owner,
                    repo: context.repo.repo,
                    issue_number: context.issue.number,
                  });

                  const action_comment = comments.data.find(comment => comment.body.startsWith(conflict_message_header) && comment.user.login === "github-actions[bot]");

                  if (action_comment) {
                    const comment_id = action_comment.id;

                    if (!MERGE_CONFLICTS) {
                      await github.rest.issues.deleteComment({
                        owner: context.repo.owner,
                        repo: context.repo.repo,
                        comment_id: comment_id,
                      });
                      return;
                    }

                    await github.rest.issues.updateComment({
                      owner: context.repo.owner,
                      repo: context.repo.repo,
                      comment_id: comment_id,
                      body: issue_body,
                    });
                  } else if (MERGE_CONFLICTS) {
                    await github.rest.issues.createComment({
                      owner: context.repo.owner,
                      repo: context.repo.repo,
                      issue_number: context.issue.number,
                      body: issue_body,
                    });
                  }