steps:
  # Step 1: Run static analysis and linting on Python tool scripts.
  - name: 'python:3.9-slim'
    id: 'StaticAnalysis'
    entrypoint: 'bash'
    args:
      - '-c'
      - |
        pip install flake8
        echo "--- Running static analysis on TYR tools ---"
        flake8 tyr/tools/

  # Step 2: Run scan_tyr_surface.py to check GCP environment compliance.
  # NOTE: This step requires a custom build image with gcloud, python, the required
  # python libraries, and spire binaries installed. It also needs appropriate permissions.
  - name: 'gcr.io/google.com/cloudsdktool/cloud-sdk' # Placeholder image
    id: 'SurfaceScan'
    entrypoint: 'python3'
    args: ['tyr/tools/scan_tyr_surface.py']

  # Step 3: Run attest_tyr_supply_chain.py against a built container image.
  # NOTE: This step requires a custom build image with cosign. It would run after
  # a container image is built and pushed in a real pipeline.
  - name: 'gcr.io/google.com/cloudsdktool/cloud-sdk' # Placeholder image
    id: 'SupplyChainAttestation'
    entrypoint: 'python3'
    args:
      - 'tyr/tools/attest_tyr_supply_chain.py'
      - '--image_uri=${_IMAGE_URI}' # Assumes image URI is passed as a substitution