delete-gitops-branch.yaml

name: Delete gitops deployment branch

on:
  pull_request:
    types: [unlabeled, closed]
    branches: ['main']

env:
  HUSKY: 0

# save resources. Don't take up a queue space doing a duplicate build
concurrency:
  group: delete-${{ github.event.pull_request.number }}
  cancel-in-progress: true

jobs:
  should-run:
    runs-on: ubuntu-latest
    outputs:
      SHOULD_RUN: ${{ steps.should_run.outputs.SHOULD_RUN }}
    steps:
      - name: Check if this workflow should run
        id: should_run
        run: |
          does_closed_pr_have_preview_label=${{ github.event.action == 'closed' && contains(github.event.pull_request.labels.*.name, 'preview') }}
          was_preview_label_removed=${{ github.event.action == 'unlabeled' && github.event.label.name == 'preview' }}
          should_run=false
          if $does_closed_pr_have_preview_label || $was_preview_label_removed ; then
            should_run=true
          fi
          echo "SHOULD_RUN=$should_run" >> "$GITHUB_OUTPUT"

  get-pr-branch-name:
    needs: should-run
    if: needs.should-run.outputs.SHOULD_RUN == 'true'
    uses: ./.github/workflows/get-pr-branch-name.yaml

  delete-gitops-branch:
    runs-on: ubuntu-latest
    needs: [get-pr-branch-name, should-run]
    if: needs.should-run.outputs.SHOULD_RUN == 'true'

    steps:
      - name: Setup gitops repo access
        uses: webfactory/ssh-agent@v0.9.0
        with:
          ssh-private-key: ${{ secrets.MANIFEST_REPO_DEPLOY_KEY }}

      - name: Checkout CD repo
        uses: actions/checkout@v4
        with:
          ssh-key: ${{ secrets.MANIFEST_REPO_DEPLOY_KEY }}
          repository: ${{ secrets.MANIFEST_REPO }}
          fetch-depth: 0 # get all branches. Needed for deleting gitops branch

      - name: Delete branch in gitops
        run: |
          if git rev-parse --verify --quiet origin/${{ needs.get-pr-branch-name.outputs.BRANCH_NAME }}; then
            git push origin --delete ${{ needs.get-pr-branch-name.outputs.BRANCH_NAME }}
          else
            echo "Branch ${{ needs.get-pr-branch-name.outputs.BRANCH_NAME }} already does not exist"
          fi