update_changelog.yml

name: Update CHANGELOG after release

on:
  push:
    tags:
      - v*

jobs:
  check-version:
    runs-on: [ubuntu-latest]
    outputs:
      version: ${{ steps.get-version.outputs.version }}
    steps:
    - name: Extract version from Github ref
      id: get-version
      env:
        TAG: ${{ github.ref }}
      shell: bash
      run: |
        version=${TAG:10}
        if [[ "$version" == *-* ]]; then
          echo "$version is a release candidate or a pre-release"
          exit 0
        fi
        echo "version=$version" >> $GITHUB_OUTPUT

  pr-update-changelog:
    runs-on: [ubuntu-latest]
    needs: check-version
    if: ${{ needs.check-version.outputs.version != '' }}
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          ref: main
      - name: Cherry-pick changelog commit
        env:
          VERSION: ${{ needs.check-version.outputs.version }}
        shell: bash
        run: |
          git config user.name github-actions
          git config user.email github-actions@github.com
          commit_hash=$(git log "$VERSION" --format="%H" --grep="Update CHANGELOG for $VERSION release")
          if [[ -z "$commit_hash" ]]; then
            echo "Cannot find commit"
            exit 1
          fi
          git cherry-pick "$commit_hash"
      - name: Create Pull Request
        uses: peter-evans/create-pull-request@v7
        with:
          token: ${{ secrets.ANTREA_BOT_WRITE_PAT }}
          delete-branch: true
          title: "Update CHANGELOG for ${{ needs.check-version.outputs.version }} release"
          body: |
            PR was opened automatically from Github Actions
      - name: Check outputs
        run: |
          echo "Pull Request Number - ${{ steps.cpr.outputs.pull-request-number }}"
          echo "Pull Request URL - ${{ steps.cpr.outputs.pull-request-url }}"