Link to Backstop artifacts #366
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| name: Link to Backstop artifacts | |
| # Add a comment in the PR thread with a link to the Backstop .zip file | |
| # containing the “visual diff” between main and PR branches. Bounce | |
| # the links off the https://nightly.link/ service, so as to get around | |
| # GitHub's silly restrictions regarding time limits and/or | |
| # authentication checks on build artifact URLs. | |
| on: | |
| workflow_run: | |
| workflows: | |
| - 'Backstop.js regression testing' | |
| types: | |
| - completed | |
| jobs: | |
| link_to_Backstop_artifacts_in_PR_comment: | |
| if: github.event.workflow_run.event == 'pull_request' && github.event.workflow_run.conclusion == 'success' | |
| runs-on: ubuntu-latest | |
| steps: | |
| - uses: actions/github-script@v7 | |
| with: | |
| # This snippet is public-domain, adapted from | |
| # https://github.com/oprypin/nightly.link/blob/master/.github/workflows/pr-comment.yml | |
| script: | | |
| async function upsertComment(owner, repo, issue_number, purpose, body) { | |
| const {data: comments} = await github.rest.issues.listComments( | |
| {owner, repo, issue_number}); | |
| const marker = `<!-- bot: ${purpose} -->`; | |
| body = marker + "\n" + body; | |
| const existing = comments.filter((c) => c.body.includes(marker)); | |
| if (existing.length > 0) { | |
| const last = existing[existing.length - 1]; | |
| core.info(`Updating comment ${last.id}`); | |
| await github.rest.issues.updateComment({ | |
| owner, repo, | |
| body, | |
| comment_id: last.id, | |
| }); | |
| } else { | |
| core.info(`Creating a comment in issue / PR #${issue_number}`); | |
| await github.rest.issues.createComment({issue_number, body, owner, repo}); | |
| } | |
| } | |
| const {owner, repo} = context.repo; | |
| const run_id = ${{github.event.workflow_run.id}}; | |
| const pull_requests = ${{ toJSON(github.event.workflow_run.pull_requests) }}; | |
| if (!pull_requests.length) { | |
| return core.error("This workflow doesn't match any pull requests!"); | |
| } | |
| const artifacts = await github.paginate( | |
| github.rest.actions.listWorkflowRunArtifacts, {owner, repo, run_id}); | |
| if (!artifacts.length) { | |
| return core.error(`No artifacts found`); | |
| } | |
| let body = `🔎 Download the Backstop report for this pull request (link valid for 90 days):\n`; | |
| for (const art of artifacts) { | |
| body += `\n* [${art.name}.zip](https://nightly.link/${owner}/${repo}/actions/artifacts/${art.id}.zip)`; | |
| } | |
| core.info("Review thread message body:", body); | |
| for (const pr of pull_requests) { | |
| await upsertComment(owner, repo, pr.number, | |
| "download-backstop", body); | |
| } |