add-label.yaml

name: Label a PR with its updated packages

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

jobs:
  label-pr:
    if: ${{ github.event.pull_request.draft == false && github.event.pull_request.user.login != 'triple-bot' && !contains(github.event.pull_request.labels.*.name, 'release') }}
    runs-on: [self-hosted, linux, x64]
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.ref }}

      - name: Get changed packages
        run: |
          RESPONSE=$(curl -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" \
          -H "Accept: application/vnd.github.v3+json" \
          "https://api.github.com/repos/${{ github.repository }}/compare/${{ github.event.pull_request.base.ref }}...${{ github.event.pull_request.head.ref }}")

          if [[ $(echo "$RESPONSE" | jq '.total_commits') == null ]]; then
            echo $RESPONSE | jq '.message'
            exit 1
          fi

          CHANGED_PACKAGES=$(echo "$RESPONSE" | jq '[.files[].filename | capture("packages/(?<packageName>[^/]+)/") .packageName] | unique | tostring')
          echo "CHANGED_PACKAGES=$CHANGED_PACKAGES" >> $GITHUB_ENV

      - name: Label PR
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          PACKAGE_LABELS=$(echo ${{ env.CHANGED_PACKAGES }} | jq .)
          curl -X POST \
            -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" \
            -H "Accept: application/vnd.github.v3+json" \
            https://api.github.com/repos/${{ github.repository }}/issues/${{ github.event.pull_request.number }}/labels \
            -d "{\"labels\": $PACKAGE_LABELS }"