name: update-pr-artifacts
on:
  workflow_run:
    workflows: [validate-external, validate-internal]
    types:
      - completed
jobs:
  update-pr-artifacts:
    runs-on: ubuntu-latest
    if: (github.event.workflow_run.event == 'pull_request' || github.event.workflow_run.event == 'pull_request_target') && github.event.workflow_run.conclusion == 'success'
    name: Update PR Artifacts
    steps:
      - name: Get PR Number
        id: pr-number
        uses: actions/github-script@v6
        with:
          result-encoding: string
          script: |
            const { owner, repo } = context.repo;
            
            const findPRNumber = async () => {
              const pulls = await github.rest.pulls.list({ owner, repo });
              for await (const { data } of github.paginate.iterator(pulls)) {
                for (const pull of data) {
                  if (pull.head.sha === '${{ github.event.workflow_run.head_sha }}' && pull.user.id === ${{ github.event.sender.id }}) {
                    return pull.number;
                  }
                }
              }

              return null;
            };

            const prNumber = await findPRNumber();
            if (!prNumber) {
              core.error(`No matching pull request found`);
            } else {
              return prNumber;
            }
      - name: Create Artifacts Content
        id: artifacts-content
        uses: actions/github-script@v6
        with:
          result-encoding: string
          script: |
            const artifacts = await github.rest.actions.listWorkflowRunArtifacts({
              owner: context.repo.owner,
              repo: context.repo.repo,
              run_id: context.payload.workflow_run.id,
            });
            
            const nightlyLinks = artifacts.data.artifacts.reduce((acc, item) => {
              acc += `- [${item.name}.zip](https://nightly.link/${context.repo.owner}/${context.repo.repo}/actions/artifacts/${item.id}.zip)\n`;
              return acc;
            }, '### Build Artifacts\n');
      
            return nightlyLinks;
      - name: Update PR Description
        uses: garrettjoecox/pr-section@3.1.0
        with:
            section-name: 'artifacts'
            repo-token: '${{ secrets.GITHUB_TOKEN }}'
            pr-number: ${{ steps.pr-number.outputs.result }}
            section-value: '${{ steps.artifacts-content.outputs.result }}'