auto-labeler.yml

name: Auto Labeler
on:
  issues:
    types:
      - reopened
      - opened
      - edited

  pull_request:
    types:
      - reopened
      - opened
      - edited

jobs:
  auto_labeler:
    # Add permission to update PR and issue labels
    permissions:
      issues: write
      pull-requests: write

    runs-on: ubuntu-latest
    steps:
      - name: Extract labels from title
        id: extract_labels
        run: |
          # Supported labels definition
          supported_labels=("ci" "doc" "core" "bug" "enhancement" "sample" "usage")

          # Get title
          if [[ "${{ github.event_name }}" == "pull_request" ]]; then
            title="${{ github.event.pull_request.title }}"
            number="${{ github.event.pull_request.number }}"
            type="pr"
          elif [[ "${{ github.event_name }}" == "issues" ]]; then
            title="${{ github.event.issue.title }}"
            number="${{ github.event.issue.number }}"
            type="issue"
          else
            echo "Invalid event type: ${{ github.event_name }}"
            exit 1
          fi

          # Function to parse title and return supported labels
          echo "Analyzing pull request title: '${title}'"

          # Parse title and return supported labels
          parsed_labels=""
          for label in "${supported_labels[@]}"; do
            if [[ $title == *"${label}"* ]]; then
              if [[ $parsed_labels == "" ]]; then
                # Cover init case
                parsed_labels="${label}"
              else
              parsed_labels="${parsed_labels},${label}"
              fi
              echo "Added label ${label}"
            fi
          done

          # Remove trailing semicolon if present
          parsed_labels="${parsed_labels%;}"
          echo "$parsed_labels"

          # Main script
          if [ -z "$title" ]; then
            echo "Please provide a title."
            exit 1
          fi

          echo "labels=${parsed_labels}" >> $GITHUB_OUTPUT
          echo "number=${number}" >> $GITHUB_OUTPUT
          echo "type=${type}" >> $GITHUB_OUTPUT
          echo $GITHUB_OUTPUT

      - name: Add labels to the PR/issue
        if: steps.extract_labels.outputs.labels != ''
        run: gh "$TYPE" edit "$NUMBER" --add-label "$LABELS"
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          GH_REPO: ${{ github.repository }}
          NUMBER: ${{ steps.extract_labels.outputs.number }}
          TYPE: ${{ steps.extract_labels.outputs.type }}
          LABELS: ${{ steps.extract_labels.outputs.labels }}