labels.yml

name: Label PRs

on:
  - pull_request_target

permissions:
  contents: read
  pull-requests: write

jobs:
  label:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4 # Uploads repository content to the runner to ensure config file available
        with:
          sparse-checkout: |
            .github/config/labeler.yml
          sparse-checkout-cone-mode: false
      - uses: actions/labeler@v5
        with:
          configuration-path: .github/config/labeler.yml
          repo-token: ${{ secrets.GITHUB_TOKEN }}
          dot: true
          sync-labels: true

  issue-linked:
    runs-on: ubuntu-latest

    steps:
      - uses: octokit/graphql-action@v2.x
        id: get_linked_issue
        with:
          query: |
            query issue($owner:String!,$repo:String!,$pr:Int!) {
              repository(owner:$owner,name:$repo) {
                pullRequest(number: $pr) {
                  closingIssuesReferences (first: 1) {
                    nodes {
                      number
                      assignees(first: 1) {
                        nodes {
                          login
                        }
                      }
                    }
                  }
                }
              }
            }
          variables: |
            owner: ${{ github.repository_owner }}
            repo: ${{ github.event.repository.name }}
            pr: ${{ github.event.pull_request.number}}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      - name: Count linked issues
        id: count_nodes
        env:
          GH_DETAILS: ${{ steps.get_linked_issue.outputs.data }}
        run: |
          GH_COUNT=$(echo "$GH_DETAILS" | jq '.repository.pullRequest.closingIssuesReferences.nodes | length')
          echo "count=$GH_COUNT" >> "$GITHUB_OUTPUT"
          echo "count=$GH_COUNT"
      - name: Check assignee count
        id: assignee_ct
        if: steps.count_nodes.outputs.count > 0
        env:
          GH_DETAILS: ${{ steps.get_linked_issue.outputs.data }}
        run: |
          GH_ASSIGNCT=$(echo "$GH_DETAILS" | jq '.repository.pullRequest.closingIssuesReferences.nodes[0].assignees.nodes | length')
          echo "count=$GH_ASSIGNCT" >> "$GITHUB_OUTPUT"
          echo "count=$GH_ASSIGNCT"
      - name: Check assignee
        id: assignee
        if: steps.count_nodes.outputs.count > 0 && steps.assignee_ct.outputs.count > 0
        env:
          GH_DETAILS: ${{ steps.get_linked_issue.outputs.data }}
        run: |
          GH_ASSIGN=$(echo "$GH_DETAILS" | jq -r '.repository.pullRequest.closingIssuesReferences.nodes[0].assignees.nodes[0].login')
          echo "name=$GH_ASSIGN" >> "$GITHUB_OUTPUT"
          echo "name=$GH_ASSIGN"
          echo "${{ github.actor }}"
      - name: Add issue-linked label
        if: steps.count_nodes.outputs.count > 0 && steps.assignee_ct.outputs.count > 0 && github.actor == steps.assignee.outputs.name
        run: |
          gh pr edit ${{ github.event.pull_request.number}} --add-label 'issue linked' --repo $GITHUB_REPOSITORY
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}