destroy.yml

---
name: "Terraform: destroy"

on:
  delete:

jobs:
  destroy:
    if: github.event.ref != 'main' && github.event.ref != 'default'
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: ./terraform
    steps:
      - uses: actions/checkout@v2

      - name: Use branch workspace (feature branch)
        run: |
          echo "WORKSPACE=${{ github.event.ref }}" >> $GITHUB_ENV

      # for some reason this (dynamic) JSON string is not possible directly in the `with:` block
      - name: Put variables in env var
        run: |
          echo "VARIABLES_JSON={\"git_branch\": \"${GITHUB_REF#refs/heads/}\", \"platform_tools_artifact_filename\": \"platform_tools.egg\"}" >> $GITHUB_ENV

      - uses: Pararius/action-terraform@0.0.21
        with:
          google_credentials: ${{ secrets.GCLOUD_AUTH_TF_RW }}
          terraform_directory: ./terraform
          terraform_do_apply: false
          terraform_do_destroy: true
          terraform_variables: ${{ env.VARIABLES_JSON }}
          terraform_workspace: ${{ env.WORKSPACE }}

      - name: Send alert for failing destroy
        uses: ravsamhq/notify-slack-action@v1
        with:
          status: ${{ job.status }}
          notify_when: "failure"
        env:
          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}