add_contributor.yml

name: Add new contributor to AUTHORS.md

on:
  pull_request_target:
    types:
      - closed

jobs:
  update-authors:
    if: github.event.pull_request.merged == true
    runs-on: ubuntu-latest

    steps:
      - name: Checkout develop branch
        uses: actions/checkout@v4
        with:
          ref: 'develop'
          fetch-depth: 0
          persist-credentials: false

      - name: Check if author is in AUTHORS.md
        id: check-author
        run: |
          GH_USER="${{ github.event.pull_request.user.login }}"
          # AUTHORS.md file already exist in repo, so can skip the conditional logic to create one if not exists
          if ! grep -q "| ${GH_USER} |" AUTHORS.md; then
            echo "new_author=true" >> $GITHUB_ENV
          else
            echo "new_author=false" >> $GITHUB_ENV
          fi

      - name: Add author to AUTHORS.md if not present
        if: env.new_author == 'true'
        run: |
          GH_USER="${{ github.event.pull_request.user.login }}"
          AUTHOR_NAME=$(curl -s https://api.github.com/users/${GH_USER} | jq -r '.name')
          if [ -z "$AUTHOR_NAME" ]; then
            AUTHOR_NAME="-"
          fi
          echo "| $AUTHOR_NAME | $GH_USER |" >> AUTHORS.md

      - name: Commit updated AUTHORS.md
        if: env.new_author == 'true'
        run: |
          git config --local user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git config --local user.name "github-actions[bot]"
          git add AUTHORS.md
          git commit -m "Add ${{ github.event.pull_request.user.login }} to AUTHORS.md"


      - name: GitHub App token
        if: env.new_author == 'true'
        uses: tibdex/github-app-token@v2
        id: generate-token
        with:
          app_id: ${{ secrets.LE_BOT_APP_ID }}
          private_key: ${{ secrets.LE_BOT_PRIVATE_KEY }}

      - name: Push changes to develop
        if: env.new_author == 'true'
        uses: ad-m/github-push-action@v0.8.0
        with:
          github_token: ${{ steps.generate-token.outputs.token }}
          branch: 'develop'