apiVersion: tekton.dev/v1
kind: Task
metadata:
  name: pyversion
spec:
  params:
    - name: context
      type: string
      description: context directory
      default: ""

    - name: ref
      type: string
      description: Full Git ref string (e.g., refs/tags/v0.2.0)

    - name: pythonImageName
      type: string
      description: Python image to use (e.g., python:3.9, python:3.11)
      default: "python:3.11-slim"

  workspaces:
    - name: base
      description: shared code workspace (includes pyproject.toml)

  results:
    - name: version
      description: Extracted project version with 'v' prefix (e.g. v0.2.0)

  steps:
    - name: verify-tag
      image: $(params.pythonImageName)
      workingDir: /workspace/base/$(params.context)/source
      script: |
        #!/usr/bin/env bash
        set -e

        echo "🔍 Extracting tag from Git ref..."
        FULL_REF="$(params.ref)"
        TAG_FROM_REF=$(basename "$FULL_REF")  # → v0.2.0

        echo "📄 Reading version from pyproject.toml..."
        pip install --quiet tomli
        VERSION=$(python3 -c 'import tomli; print(tomli.load(open("pyproject.toml", "rb"))["tool"]["poetry"]["version"])')
        TAG_FROM_PROJECT="${VERSION}"

        echo "🔁 Comparing Git tag and project version:"
        echo "   - Git ref tag:      $TAG_FROM_REF"
        echo "   - Project version:  $TAG_FROM_PROJECT"

        if [ "$TAG_FROM_REF" != "$TAG_FROM_PROJECT" ]; then
          echo "❌ Mismatch! Git tag and project version are not the same."
          exit 1
        fi

        echo "✅ Tag and version match: $TAG_FROM_PROJECT"
        echo -n "$TAG_FROM_PROJECT" > /tekton/results/version