name: Version Compatibility Matrix

# This workflow generates the version compatibility matrix for mixed-cluster tests.
# It is separated from the main CI workflow to avoid multiline secret masking issues.
# See: https://github.com/keycloak/keycloak/issues/45745

on:
  workflow_call:
    outputs:
      matrix:
        description: 'Version compatibility matrix JSON for mixed-cluster tests'
        value: ${{ jobs.generate-matrix.outputs.matrix }}

permissions:
  contents: read

jobs:
  generate-matrix:
    name: Generate Matrix
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.version-compatibility.outputs.matrix }}
    steps:
      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0

      - name: Version Compatibility Matrix
        id: version-compatibility
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          if [[ "${{ github.event_name }}" == "pull_request" ]]; then
            BRANCH="${{ github.base_ref }}"
          else
            BRANCH="${{ github.ref_name }}"
          fi
          MATRIX_JSON=$(./.github/scripts/version-compatibility.sh "${BRANCH}")
          echo "${MATRIX_JSON}"
          echo "matrix=${MATRIX_JSON}" >> $GITHUB_OUTPUT