labeler.yml

name: "Issue and Pull Request Labeler"

on:
  issues:
    types: [opened]
  pull_request_target:
    types: [opened, synchronize, reopened]

permissions:
  contents: read
  issues: write
  pull-requests: write

jobs:
  labeler:
    if: github.event_name == 'pull_request_target'
    permissions:
      contents: read
      pull-requests: write
    runs-on: ubuntu-latest
    steps:
      - name: Label PR
        uses: actions/labeler@v5
        with:
          repo-token: "${{ secrets.GITHUB_TOKEN }}"
          sync-labels: true

  classify:
    if: github.event.action == 'opened'
    runs-on: ubuntu-latest
    steps:
      - name: Classify issue or pull request
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          REPO: ${{ github.repository }}
          NUMBER: ${{ github.event.issue.number || github.event.pull_request.number }}
          TITLE: ${{ github.event.issue.title || github.event.pull_request.title }}
          BODY: ${{ github.event.issue.body || github.event.pull_request.body }}
        shell: bash
        run: |
          set -euo pipefail

          text="$(printf '%s\n%s' "$TITLE" "$BODY" | tr '[:upper:]' '[:lower:]')"
          labels=()

          matches() {
            [[ "$text" =~ $1 ]]
          }

          if matches '(^|[^[:alnum:]])(bug|broken|crash|error|fail|failure|regression)([^[:alnum:]]|$)'; then
            labels+=("bug")
          elif matches '(^|[^[:alnum:]])(question|how do|how to|why)([^[:alnum:]]|$)'; then
            labels+=("question")
          elif matches '(^|[^[:alnum:]])(docs|documentation|readme)([^[:alnum:]]|$)'; then
            labels+=("documentation")
          elif matches '(^|[^[:alnum:]])(add|feature|enhancement|improve|support)([^[:alnum:]]|$)'; then
            labels+=("enhancement")
          fi

          if matches '(^|[^[:alnum:]])(app|audio|dictation|hotkey|menu bar|microphone|swift|transcription|whisper)([^[:alnum:]]|$)'; then
            labels+=("app")
          fi
          if matches '(^|[^[:alnum:]])(homepage|site|vocamac.com|web|website)([^[:alnum:]]|$)'; then
            labels+=("web")
          fi
          if matches '(^|[^[:alnum:]])(docs|documentation|readme|release notes)([^[:alnum:]]|$)'; then
            labels+=("docs")
          fi
          if matches '(^|[^[:alnum:]])(action|build|ci|release|test|workflow)([^[:alnum:]]|$)'; then
            labels+=("ci")
          fi

          if [ "${#labels[@]}" -eq 0 ]; then
            exit 0
          fi

          mapfile -t labels < <(printf '%s\n' "${labels[@]}" | sort -u)
          fields=()
          for label in "${labels[@]}"; do
            fields+=(-f "labels[]=$label")
          done

          gh api "repos/$REPO/issues/$NUMBER/labels" --method POST "${fields[@]}"