name: List Target Branches

on:
  workflow_call:
    # Map the workflow outputs to job outputs
    outputs:
      branches:
        description: "List of target branches"
        value: ${{ jobs.list-target-branches.outputs.matrix }}

jobs:
  list-target-branches:
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.get-branch-list.outputs.matrix }}
    steps:
      - uses: actions/checkout@v2

      - name: Set up Python 3.8
        uses: actions/setup-python@v2
        with:
          python-version: 3.8

      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          pip cache purge
          pip install .[dev]

      - id: get-branch-list
        run: |
          python -m detection_rules dev utils get-branches
          echo "::set-output name=matrix::$(cat ./detection_rules/etc/target-branches.yml)"