# This workflow is triggered when opening/reopening PR, editing the PR description or changing labels. It ignores unrelated label changes. It runs PR type validation and if it succeeds, it runs PR milestone and detector labels workflow in parallel. 
name: PR Edit Trigger

on:
  pull_request:
    types:
      - opened
      - reopened
      - edited
      - labeled
      - unlabeled

permissions:
  pull-requests: write
  contents: read

jobs:
  check-pr-trigger:
    name: Check PR Trigger
    runs-on: ubuntu-latest
    
    outputs:
      require_validation: ${{ steps.check.outputs.require_validation }}

    steps:
      - name: Check whether PR Validation is required
        id: check
        uses: actions/github-script@v8
        with:
          script: |
            /*
             * If triggered by label change, ignore unrelated labels.
             */
            const action = context.payload.action;
            if (action === 'labeled' || action === 'unlabeled') {
              const changedLabel = context.payload.label?.name;

              const relevantLabels = [
                'Feature',
                'Bug Fix',
                'Infrastructure',
                'Breaking API'
              ];

              if (!relevantLabels.includes(changedLabel)) {
                core.info(
                  `Ignoring unrelated label change: ${changedLabel}`
                );
                core.setOutput('require_validation', 'false');
                return;
              }
            }   

            core.info('PR type validation required.');
            core.setOutput('require_validation', 'true');

  validate-pr-type:
    needs: check-pr-trigger
    if: ${{ needs.check-pr-trigger.outputs.require_validation == 'true' }}
    uses: ./.github/workflows/pr_type_validation.yaml
    with:
      pr_number: ${{ github.event.pull_request.number }}
    permissions:
      pull-requests: write
      contents: read

  milestone:
    needs: validate-pr-type
    uses: ./.github/workflows/pr_milestone.yaml
    with:
      pr_number: ${{ github.event.pull_request.number }}
    permissions:
      pull-requests: write
      contents: read

  detector-labels:
    needs: validate-pr-type
    uses: ./.github/workflows/pr_detector_labels.yaml
    with:
      pr_number: ${{ github.event.pull_request.number }}
    permissions:
      pull-requests: write
      issues: read