add-hacktoberfest-label.yml

name: Add Hacktoberfest Labels

on:
  issues:
    types: [opened]
  pull_request:
    types: [opened]

jobs:
  add_labels:
    runs-on: ubuntu-latest

    env:
      # Define labels as variables for easy modification
      LABELS: |
        hacktoberfest
        hacktoberfest-accepted
        hacktoberfest2024

    steps:
      - name: Add Hacktoberfest labels to issues
        if: github.event_name == 'issues'
        uses: actions-ecosystem/action-add-labels@v1
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          labels: ${{ env.LABELS }}
        continue-on-error: true  # Avoid failures due to non-critical errors
        id: add_labels_issues

      - name: Add Hacktoberfest labels to pull requests
        if: github.event_name == 'pull_request'
        uses: actions-ecosystem/action-add-labels@v1
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          labels: ${{ env.LABELS }}
        continue-on-error: true  # Avoid failures due to non-critical errors
        id: add_labels_pr

      # Validate if labels already exist to avoid duplicates
      - name: Avoid duplicate labels on issues
        if: github.event_name == 'issues' && steps.add_labels_issues.outcome == 'success'
        run: |
          echo "Checking if labels already exist on issue #${{ github.event.issue.number }}..."
          existing_labels=$(curl -s -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
                            -H "Accept: application/vnd.github.v3+json" \
                            https://api.github.com/repos/${{ github.repository }}/issues/${{ github.event.issue.number }}/labels \
                            | jq -r '.[].name')

          for label in ${{ env.LABELS }}; do
            if [[ "$existing_labels" == *"$label"* ]]; then
              echo "Label '$label' already exists, skipping."
            else
              echo "Adding label '$label'."
              curl -X POST -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
              -H "Accept: application/vnd.github.v3+json" \
              https://api.github.com/repos/${{ github.repository }}/issues/${{ github.event.issue.number }}/labels \
              -d "{\"labels\":[\"$label\"]}"
            fi
          done

      - name: Avoid duplicate labels on pull requests
        if: github.event_name == 'pull_request' && steps.add_labels_pr.outcome == 'success'
        run: |
          echo "Checking if labels already exist on pull request #${{ github.event.pull_request.number }}..."
          existing_labels=$(curl -s -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
                            -H "Accept: application/vnd.github.v3+json" \
                            https://api.github.com/repos/${{ github.repository }}/issues/${{ github.event.pull_request.number }}/labels \
                            | jq -r '.[].name')

          for label in ${{ env.LABELS }}; do
            if [[ "$existing_labels" == *"$label"* ]]; then
              echo "Label '$label' already exists, skipping."
            else
              echo "Adding label '$label'."
              curl -X POST -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
              -H "Accept: application/vnd.github.v3+json" \
              https://api.github.com/repos/${{ github.repository }}/issues/${{ github.event.pull_request.number }}/labels \
              -d "{\"labels\":[\"$label\"]}"
            fi
          done