name: OpenAPI Schema Backward Compatibility
permissions:
  contents: read

on:
  push:
    paths:
      - "schemas/openapi.json"
  pull_request:
    paths:
      - "schemas/openapi.json"

jobs:
  openapi-schema-backward-compatibility:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          sparse-checkout: schemas/openapi.json
          sparse-checkout-cone-mode: false
      - name: Copy schema file
        run: |
          cp schemas/openapi.json .${{ github.sha }}.openapi.json
          git checkout ${{ github.base_ref }}
      - uses: docker://openapitools/openapi-diff
        with:
          args: --fail-on-incompatible schemas/openapi.json .${{ github.sha }}.openapi.json