name: Create Release Branch

on:
  schedule:
    # It should be kept in sync with if-condition in jobs
    - cron: '0 6 * * MON' # Storage release
    - cron: '0 6 * * THU' # Proxy release
  workflow_dispatch:
    inputs:
      create-storage-release-branch:
        type: boolean
        description: 'Create Storage release PR'
        required: false
      create-proxy-release-branch:
        type: boolean
        description: 'Create Proxy release PR'
        required: false

# No permission for GITHUB_TOKEN by default; the **minimal required** set of permissions should be granted in each job.
permissions: {}

defaults:
  run:
    shell: bash -euo pipefail {0}

jobs:
  create-storage-release-branch:
    if: ${{ github.event.schedule == '0 6 * * MON' || format('{0}', inputs.create-storage-release-branch) == 'true' }}
    runs-on: ubuntu-22.04

    permissions:
      contents: write # for `git push`

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

    - name: Set environment variables
      run: |
        echo "RELEASE_DATE=$(date +'%Y-%m-%d')" | tee -a $GITHUB_ENV
        echo "RELEASE_BRANCH=rc/$(date +'%Y-%m-%d')" | tee -a $GITHUB_ENV

    - name: Create release branch
      run: git checkout -b $RELEASE_BRANCH

    - name: Push new branch
      run: git push origin $RELEASE_BRANCH

    - name: Create pull request into release
      env:
        GH_TOKEN: ${{ secrets.CI_ACCESS_TOKEN }}
      run: |
        TITLE="Storage & Compute release ${RELEASE_DATE}"

        cat << EOF > body.md
          ## ${TITLE}

          **Please merge this Pull Request using 'Create a merge commit' button**
        EOF

        gh pr create --title "${TITLE}" \
                     --body-file "body.md" \
                     --head "${RELEASE_BRANCH}" \
                     --base "release"

  create-proxy-release-branch:
    if: ${{ github.event.schedule == '0 6 * * THU' || format('{0}', inputs.create-proxy-release-branch) == 'true' }}
    runs-on: ubuntu-22.04

    permissions:
      contents: write # for `git push`

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

    - name: Set environment variables
      run: |
        echo "RELEASE_DATE=$(date +'%Y-%m-%d')" | tee -a $GITHUB_ENV
        echo "RELEASE_BRANCH=rc/proxy/$(date +'%Y-%m-%d')" | tee -a $GITHUB_ENV

    - name: Create release branch
      run: git checkout -b $RELEASE_BRANCH

    - name: Push new branch
      run: git push origin $RELEASE_BRANCH

    - name: Create pull request into release
      env:
        GH_TOKEN: ${{ secrets.CI_ACCESS_TOKEN }}
      run: |
        TITLE="Proxy release ${RELEASE_DATE}"

        cat << EOF > body.md
          ## ${TITLE}

          **Please merge this Pull Request using 'Create a merge commit' button**
        EOF

        gh pr create --title "${TITLE}" \
                     --body-file "body.md" \
                     --head "${RELEASE_BRANCH}" \
                     --base "release-proxy"