.github/workflows/batch_release_pr.yml

name: "Creates Batch Release for a Package"

on:
  repository_dispatch:
    types: [batch-release-pr]

jobs:
  create_batch_release_branch:
    runs-on: ubuntu-latest
    permissions:
      contents: write # Grants write permission to create a branch.
    env:
      BRANCH_NAME: ${{ github.event.client_payload.package }}-${{ github.run_id }}-${{ github.run_attempt }}
    outputs:
      branch_created: ${{ steps.check-branch-exists.outputs.exists }}
    steps:
      - name: checkout repository
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
      - name: "Install Flutter"
        uses: ./.github/workflows/internals/install_flutter
      - name: Set up tools
        run: dart pub get
        working-directory: ${{ github.workspace }}/script/tool
      # This step is to create a branch for batch release
      # A branch may not be created if there is nothing to release.
      # In that case, the workflow will exit and complete successfully.
      - name: create batch release branch
        run: |
          git config --global user.name ${{ secrets.USER_NAME }}
          git config --global user.email ${{ secrets.USER_EMAIL }}
          dart ./script/tool/lib/src/main.dart branch-for-batch-release --packages=${GITHUB_EVENT_CLIENT_PAYLOAD_PACKAGE} --branch=${BRANCH_NAME} --remote=origin
        env:
          GITHUB_EVENT_CLIENT_PAYLOAD_PACKAGE: ${{ github.event.client_payload.package }}
      - name: Check if branch was created
        id: check-branch-exists
        run: |
          if git show-ref --verify --quiet refs/heads/${BRANCH_NAME}; then
            echo "exists=true" >> $GITHUB_OUTPUT
          else
            echo "exists=false" >> $GITHUB_OUTPUT
          fi

  create_release_pr:
    needs: create_batch_release_branch
    if: needs.create_batch_release_branch.outputs.branch_created == 'true'
    runs-on: ubuntu-latest
    permissions:
      # The create-pull-request action needs both content and pull-requests permissions.
      pull-requests: write
      contents: write
    env:
      BRANCH_NAME: ${{ github.event.client_payload.package }}-${{ github.run_id }}-${{ github.run_attempt }}
    steps:
      - name: checkout repository
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
        with:
          ref: ${{ env.BRANCH_NAME }}
      - name: Create batch release PR
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          gh pr create \
            --base "release-${{ github.event.client_payload.package }}" \
            --head "${{ env.BRANCH_NAME }}" \
            --title "[${{ github.event.client_payload.package }}] Batch release" \
            --body "This PR was created automatically to batch release the \`${{ github.event.client_payload.package }}\`."