labeler.yaml

name: PR Labeler

on:
  pull_request:
    types: [opened, synchronize]
    branches:
    - main

jobs:
  labeler:
    runs-on: ubuntu-latest
    permissions:
      issues: write
      pull-requests: write
      contents: write
      
    steps:
    - name: Checkout code
      uses: actions/checkout@v4
      with:
        fetch-depth: 0

    - name: Fetch all branches
      run: git fetch --all

    - name: Extract commit messages
      run: |
        COMMITS=$(git log --format=%B origin/main..HEAD)
        echo "$COMMITS"
        echo "$COMMITS" > commits.txt

    - name: Debug - Print commits
      run: cat commits.txt

    - name: Set labels based on commit messages
      id: set-labels
      run: |
        labels=()
        while IFS= read -r commit; do
          echo "Processing commit: $commit"
          if [[ $commit =~ ^feat ]]; then
            labels+=("feature")
          elif [[ $commit =~ ^fix ]]; then
            labels+=("bugfix")
          elif [[ $commit =~ ^docs ]]; then
            labels+=("documentation")
          elif [[ $commit =~ ^style ]]; then
            labels+=("style")
          elif [[ $commit =~ ^refactor ]]; then
            labels+=("refactor")
          elif [[ $commit =~ ^test ]]; then
            labels+=("test")
          elif [[ $commit =~ ^ci ]]; then
            labels+=("ci")
          elif [[ $commit =~ ^chore ]]; then
            labels+=("chore")
          fi
        done < commits.txt

        # Remove duplicate labels and join them as a newline-separated string
        unique_labels=$(printf "%s\n" "${labels[@]}" | sort -u)

        # Debug output for unique labels
        echo "Unique labels:"
        echo "$unique_labels"

        # Set the output as a newline-separated string
        echo "labels<<EOF" >> $GITHUB_OUTPUT
        echo "$unique_labels" >> $GITHUB_OUTPUT
        echo "EOF" >> $GITHUB_OUTPUT

    - name: Add labels to PR
      uses: actions-ecosystem/action-add-labels@v1
      with:
        github_token: ${{ secrets.PERSONAL_ACCESS_TOKEN }}
        labels: ${{ steps.set-labels.outputs.labels }}

    - name: Assign PR creator
      uses: actions/github-script@v6
      with:
        script: |
          await github.rest.issues.addAssignees({
            owner: context.repo.owner,
            repo: context.repo.repo,
            issue_number: context.issue.number,
            assignees: [context.actor]
          })