try.yml

name: Try
on:
  issue_comment:
    types: [created]

jobs:
  try:
    if: github.event.issue.pull_request && (github.event.comment.author_association == 'MEMBER' || github.event.comment.author_association == 'OWNER') && (contains(github.event.comment.body, '\n/ci try') || startsWith(github.event.comment.body, '/ci try'))
    uses: ./.github/workflows/ci.yml
    with:
      matrix-args: try --comment "${{ github.event.comment.body }}" --pr ${{ github.event.issue.number }}
      checkout-ref: refs/pull/${{ github.event.issue.number }}/head
  comment:
    needs: try
    if: always() && needs.try.result != 'skipped'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      # comment on the PR with the result and links to the logs using gh cli
      # Something like `### Try build: [{result}]({link_to_logs})`
      # the url to the logs are on jobs[name="try"].url gathered with `gh run view ${{ github.run_id }} --json jobs`
      - name: Comment on PR
        run: |
          PR_ID=${{ github.event.issue.number }}
          gh run view ${{ github.run_id }} --json jobs |\
          jq -r --arg pr_id "$PR_ID" --arg comment "${{ github.event.comment.url }}" '
          "Diff for [comment](" + $comment + ")\n\n- [Run](" + (.jobs[] | select(.name == "try / generate-matrix") | .url) + ")\n" +
          def job_to_md: . | "- [" + (.box) + .name + "](" + .url + "?pr=" + $pr_id + (.conclusion | if . == "success" then "#step:10:1)" else "#)" end);
          def wrap_if_needed:
            if length > 10 then
              "<details>\n<summary>" + (.[0].conclusion | if . == "success" then "Successful Jobs" else "Failed Jobs" end) + "</summary>\n" + (map(job_to_md) | join("\n")) + "\n</details>"
            else
              map(job_to_md) | join("\n")
            end;
          "Try run for [comment](" + $comment + ")\n\n- [Matrix](" + (.jobs[] | select(.name == "try / generate-matrix") | .url) + ")\n" +
          ([.jobs[] | select(.name | startswith("try / target")) | select(.name | contains("matrix.pretty") | not ) | . as $job |
          {conclusion: $job.conclusion, box: ($job.conclusion | if . == "success" then "✅ " else "❌ " end), name: ($job.name | capture("\\((?<name>[^,]+),.*") | .name), url: $job.url} ] |
          group_by(if .conclusion == "success" then "success" else "failure" end) |
          map(wrap_if_needed) |
          join("\n"))' |\
          gh pr comment "$PR_ID" --body "$(< /dev/stdin)"
        env:
          GH_TOKEN: ${{ github.token }}