# Copyright 2022 Signal Messenger, LLC
# SPDX-License-Identifier: AGPL-3.0-only
name: Backport Check
on:
  pull_request:
    types: [opened, labeled]
jobs:
  backport-check:
    runs-on: ubuntu-latest
    steps:
      - name: Check pull request has a backport label
        env:
          EVENT_ACTION: ${{ github.event.action }}
          EVENT_LABEL_NAME: ${{ toJSON(github.event.label.name) }}
          EVENT_PULL_REQUEST_LABELS: ${{ toJSON(github.event.pull_request.labels.*.name) }}
        shell: bash
        run: |
          LABELS="$EVENT_PULL_REQUEST_LABELS, $EVENT_LABEL_NAME"
          BACKPORT_LABELS="backport no-backport needs-backport needs-manual-backport"
          echo "Found labels: $LABELS"
          for BACKPORT_LABEL in $BACKPORT_LABELS; do
            echo "Checking for label '$BACKPORT_LABEL'"
            if echo "$LABELS" | grep -q "\"$BACKPORT_LABEL\""; then
              echo "Has '$BACKPORT_LABEL' label"
              exit 0
            fi
          done
          echo "Does not have any backport label"
          exit 1