prevent-no-label-execution.yaml

name: prevent-no-label-execution

on:
  workflow_call:
    inputs:
      label:
        required: true
        type: string
    outputs:
      run:
        value: ${{ jobs.prevent-no-label-execution.outputs.run }}

jobs:
  prevent-no-label-execution:
    runs-on: ubuntu-22.04
    outputs:
      run: ${{ steps.prevent-no-label-execution.outputs.run }}
    steps:
      - name: Prevent no label execution
        id: prevent-no-label-execution
        run: |
          function check() {
            if [ "${{ github.event_name }}" != "pull_request" ] && [ "${{ github.event_name }}" != "pull_request_target" ]; then
              echo "true"
              return
            fi

            # Labeled now
            if [ "${{ github.event.label.name }}" != "" ]; then
              if [ "${{ github.event.label.name == inputs.label }}" = "true" ]; then
                echo "true"
                return
              fi

              echo "Skipping execution since a different label '${{ github.event.label.name }}' is added."
              return
            fi

            # Labeled before and synchronized
            if [ "${{ contains(github.event.pull_request.labels.*.name, inputs.label) }}" = "true" ]; then
              echo "true"
              return
            fi

            echo "Please add the label '${{ inputs.label }}' to run this workflow."
            return
          }

          echo "run=$(check)" >> $GITHUB_OUTPUT
        shell: bash

      - name: Show result
        run: |
          echo "::notice:: ${{ steps.prevent-no-label-execution.outputs.run }}"
        shell: bash