slsDetectorPackage/.github/workflows/pr_edit_trigger.yaml

# 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 }}
      file_label_change: ${{ steps.check.outputs.file_label_change }}

    steps:
      - name: Check PR Trigger
        id: check
        uses: actions/github-script@v8
        with:
          script: |
            let requireValidation = true;
            let fileLabelChange = false;

            /*
             * 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'
              ];

              const fileLabels = [
                'File Major',
                'File Minor',
              ];

              if (!relevantLabels.includes(changedLabel)) {
                core.info(
                  `Ignoring unrelated label change: ${changedLabel}`
                );
                requireValidation = false;
              }

              if (fileLabels.includes(changedLabel)) {
                core.info(
                  `File version label change detected: ${changedLabel}`
                );
                fileLabelChange = true;
              }

            }   

            /*
             * Set workflow outputs.
             */
            core.setOutput(
              'require_validation',
              requireValidation.toString()
            );

            core.setOutput(
              'file_label_change',
              fileLabelChange.toString()
            );


            /*
             * Log what will run.
             */
            if (requireValidation) {
              core.info('PR type validation required.');
            } else {
              core.info('PR type validation not required.');
            }

            if (fileLabelChange) {
              core.info('File version label change detected.');
            } else {
              core.info('No file version label change detected.');
            }

  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

  file-version:
    needs: check-pr-trigger
    if: ${{ needs.check-pr-trigger.outputs.file_label_change == 'true' }}
    uses: ./.github/workflows/pr_file_version.yaml
    with:
      pr_number: ${{ github.event.pull_request.number }}
    permissions:
      pull-requests: write
      contents: read