pr-comment-artifact-url.yml

name: Comment Artifact URL on PRs

on:
  workflow_run:
    types:
      - 'completed'
    workflows:
      - 'Artifact Upload'

jobs:
  comment-on-pr:
    if: github.event.workflow_run.conclusion == 'success'
    runs-on: ubuntu-latest
    steps:
      - name: Get Artifact URL & PR Info
        env:
          GITHUB_TOKEN: ${{ github.token }}
          GITHUB_REPOSITORY: ${{ github.repository }}
          GITHUB_WORKFLOW_RUN_ID: ${{ github.event.workflow_run.id }}
          GITHUB_WORKFLOW_RUN_CHECK_SUITE_ID: ${{ github.event.workflow_run.check_suite_id }}
          WORKFLOW_RUN_EVENT_OBJ: ${{ toJSON(github.event.workflow_run) }}
        run: |
          set -e

          HEAD_SHA=$(jq -r '.pull_requests[0].head.sha' <<< "$WORKFLOW_RUN_EVENT_OBJ")

          PR_NUMBER=$(jq -r '.pull_requests[0].number' <<< "$WORKFLOW_RUN_EVENT_OBJ")
          echo "PR Number: $PR_NUMBER"
          echo "PR_NUMBER=$PR_NUMBER" >> "$GITHUB_ENV"

          gh api "/repos/$GITHUB_REPOSITORY/actions/runs/$GITHUB_WORKFLOW_RUN_ID/artifacts" \
            --jq "[.artifacts | .[] | {"id": .id, "name": .name}]" \
            > artifacts.json

          PR_COMMENT=$(
            echo "Builds for commit $HEAD_SHA:"
            while IFS="§" read -r name url; do
              echo "* [$name]($url)"
            done < <(jq -r ".[] | \
              .name + \"§\" \
              + ( .id | tostring | \"https://github.com/$GITHUB_REPOSITORY/suites/$GITHUB_WORKFLOW_RUN_CHECK_SUITE_ID/artifacts/\" + . )" \
              artifacts.json)
          )
          echo -e "PR COMMENT: \n$PR_COMMENT"
          {
            echo 'PR_COMMENT<<EOF'
            echo -e "$PR_COMMENT"
            echo EOF
          } >> "$GITHUB_ENV"
      - name: Update Comment
        env:
          HEAD_SHA: ${{ env.HEAD_SHA }}
        uses: peter-evans/create-or-update-comment@v2
        with:
          issue-number: ${{ env.PR_NUMBER }}
          body: ${{ env.PR_COMMENT }}