label.yml

name: Label

on:
  pull_request:
    types: [opened, reopened, synchronize]

jobs:
  label:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      pull-requests: write
    steps:
      - uses: actions/checkout@v4

      - name: Label PR
        run: |
          PR=${{ github.event.pull_request.number }}
          changed_files=$(gh api "repos/${{ github.repository }}/pulls/$PR/files" --paginate -q '.[].filename')

          current_labels=$(gh pr view $PR --json labels -q '.labels[].name')

          add_label() {
            gh label create "$1" --color "0075ca" 2>/dev/null || true
            gh pr edit $PR --add-label "$1"
          }

          remove_label_if_exists() {
            if echo "$current_labels" | grep -qF "$1"; then
              gh pr edit $PR --remove-label "$1"
            fi
          }

          remove_label_if_exists "🥐 Crew"
          remove_label_if_exists "⚡️ Playground"
          remove_label_if_exists "🔗 Root"
          remove_label_if_exists "🔗 Workflows"

          echo "$current_labels" | grep "^🔗 Packages:" | while read -r label; do
            gh pr edit $PR --remove-label "$label"
          done

          if echo "$changed_files" | grep -q "^apps/crew/"; then
            add_label "🥐 Crew"
          fi

          if echo "$changed_files" | grep -q "^apps/playground/"; then
            add_label "⚡️ Playground"
          fi

          if echo "$changed_files" | grep -qE "^[^/]+$|^\.github/"; then
            add_label "🔗 Root"
          fi

          changed_packages=$(echo "$changed_files" | grep "^packages/" | awk -F'/' '{print $2}' | sort -u)
          for pkg in $changed_packages; do
            add_label "🔗 Packages:$pkg"
          done
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}