name: Collect code references

on:
  pull_request:

jobs:
  check-ld-secret:
    name: Check for LD secret
    runs-on: ubuntu-22.04
    outputs:
      available: ${{ steps.check-ld-secret.outputs.available }}
    permissions:
      contents: read

    steps:
      - name: Check
        id: check-ld-secret
        run: |
          if [ "${{ secrets.LD_ACCESS_TOKEN }}" != '' ]; then
            echo "available=true" >> $GITHUB_OUTPUT;
          else
            echo "available=false" >> $GITHUB_OUTPUT;
          fi

  refs:
    name: Code reference collection
    runs-on: ubuntu-22.04
    needs: check-ld-secret
    if: ${{ needs.check-ld-secret.outputs.available == 'true' }}
    permissions:
      contents: read
      pull-requests: write

    steps:
      - name: Check out repository
        uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938 # v4.2.0

      - name: Collect
        id: collect
        uses: launchdarkly/find-code-references-in-pull-request@d008aa4f321d8cd35314d9cb095388dcfde84439 # v2.0.0
        with:
          project-key: default
          environment-key: dev
          access-token: ${{ secrets.LD_ACCESS_TOKEN }}
          repo-token: ${{ secrets.GITHUB_TOKEN }}

      - name: Add label
        if: steps.collect.outputs.any-changed == 'true'
        run: gh pr edit $PR_NUMBER --add-label feature-flag
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PR_NUMBER: ${{ github.event.pull_request.number }}

      - name: Remove label
        if: steps.collect.outputs.any-changed == 'false'
        run: gh pr edit $PR_NUMBER --remove-label feature-flag
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PR_NUMBER: ${{ github.event.pull_request.number }}