fast-forward-branch.yml

name: Fast-forward between branches
on:
  workflow_call:
    inputs:
      ref:
        description: 'The branch name or commit to fast-forward from'
        type: string
      to_branch:
        description: 'The branch name to fast-forward to'
        type: string

jobs:
  fast-forward:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout branch
        uses: actions/checkout@v4
        with:
          ref: ${{ inputs.ref }}
          fetch-depth: 0
          token: ${{ secrets.FF_CANDIDATE_BRANCH_PAT_TOKEN }}
      - id: git_log
        name: Generate diff log
        run: |
          issues=$(git log origin/${{ inputs.to_branch }}..${{ inputs.ref }} | grep -ioh "THREESCALE-[0-9]\+" | sort -u | sed -e 's/^/https:\/\/issues.redhat.com\/browse\//')
          echo "issues<<EOF" >> $GITHUB_OUTPUT
          echo "$issues" >> $GITHUB_OUTPUT
          echo "EOF" >> $GITHUB_OUTPUT
          log=$(git log origin/${{ inputs.to_branch }}..${{ inputs.ref }} --pretty=format:'%h - %s (%an)')
          echo "log<<EOF" >> $GITHUB_OUTPUT
          echo "$log" >> $GITHUB_OUTPUT
          echo "EOF" >> $GITHUB_OUTPUT
      - name: Fast-forward
        run: |
          git fetch origin ${{ inputs.ref }}:${{ inputs.to_branch }}
          git push origin ${{ inputs.to_branch }}
      - name: Print diff log
        run: |
          echo -e "\nISSUES MENTIONED IN THE CHANGELOG:"
          echo "${{ steps.git_log.outputs.issues }}"
          echo -e "\nCHANGELOG SUMMARY:"
          echo "${{ steps.git_log.outputs.log }}"