name: Create Release Branch

on:
  schedule:
    - cron: '0 7 * * 2'
  workflow_dispatch:

jobs:
  create_release_branch:
    runs-on: [ ubuntu-latest ]

    permissions:
      contents: write # for `git push`

    steps:
    - name: Check out code
      uses: actions/checkout@v4
      with:
        ref: main

    - name: Get current date
      id: date
      run: echo "date=$(date +'%Y-%m-%d')" >> $GITHUB_OUTPUT

    - name: Create release branch
      run: git checkout -b releases/${{ steps.date.outputs.date }}

    - name: Push new branch
      run: git push origin releases/${{ steps.date.outputs.date }}

    - name: Create pull request into release
      env:
        GH_TOKEN: ${{ secrets.CI_ACCESS_TOKEN }}
      run: |
        cat << EOF > body.md
          ## Release ${{ steps.date.outputs.date }}

          **Please merge this PR using 'Create a merge commit'!**
        EOF

        gh pr create --title "Release ${{ steps.date.outputs.date }}" \
                     --body-file "body.md" \
                     --head "releases/${{ steps.date.outputs.date }}" \
                     --base "release"