clean-commit-messages.yml

name: Clean PR Commit Messages

on:
  pull_request:
    types: [opened, synchronize]

jobs:
  clean-commit-message:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
        with:
          ref: ${{ github.event.pull_request.head.ref }}

      - name: Extract PR commits
        id: extract_pr_commits
        uses: actions/github-script@v7
        with:
          script: |
            const commits = await github.rest.pulls.listCommits({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: context.payload.pull_request.number
            });
            return {
              commits: commits.data.map(commit => commit.sha).join('\n')
            };

      - name: Clean commit messages
        run: |
          commit_shas=$(echo "${{ steps.extract_pr_commits.outputs.commits }}" | tr '\n' ' ')
          
          cleaned_messages=""
          for sha in $commit_shas; do
            message=$(git log --format=%B -n 1 $sha)
            cleaned_message=$(echo "$message" | sed 's/<!--.*-->//g' | sed '/^$/d')
            cleaned_messages+="$cleaned_message"$'\n'
          done

          git reset --soft HEAD~$(echo $commit_shas | wc -w)
          IFS=$'\n'
          for cleaned_message in ${cleaned_messages}; do
            git commit -m "${cleaned_message}"
          done

      - name: Push cleaned commit messages
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PR_BRANCH: ${{ github.event.pull_request.head.ref }}
        run: |
          git push origin HEAD:$PR_BRANCH --force-with-lease