Create pr-comment.yml

.github/workflows/pr-comment.yml

@@ -0,0 +1,89 @@
+name: Add Template to Pull Request 
+on:
+  workflow_run:
+    workflows: ['Build Template']
+    types: [completed]
+jobs:
+  pr_comment:
+    # if Build Template was successful and ran on a branch that is currently the head in a pull request
+    if: github.event.workflow_run.conclusion == 'success'
+    runs-on: ubuntu-latest
+
+    permissions: 
+      pull-requests: write
+
+    steps:
+      - uses: actions/github-script@v6
+        with:
+          # This snippet is public-domain, taken from
+          # https://github.com/oprypin/nightly.link/blob/master/.github/workflows/pr-comment.yml
+          script: |
+            async function upsertComment(owner, repo, issue_number, purpose,old_body, body) {
+              const {data: comments} = await github.rest.issues.listComments(
+                {owner, repo, issue_number});
+                
+              const marker = `\r\n<!-- DO NOT REMOVE!! -->\r\n<!-- bot: ${purpose} -->\r\n`;
+
+              const old_marker = new RegExp(marker.replace("\r\n", "\r?\n")).exec(old_body)?.[0] ?? marker;
+              
+              body = old_body.split(old_marker)[0] + marker + body;
+              await github.request('PATCH /repos/{owner}/{repo}/pulls/{pull_number}', {
+                owner: owner,
+                repo: repo,
+                pull_number: issue_number,
+                body: body,
+                headers: {
+                  'X-GitHub-Api-Version': '2022-11-28'
+                }
+              }) 
+            }
+            
+            const {owner, repo} = context.repo;
+            const run_id = ${{github.event.workflow_run.id}};
+            
+            const pull_head_sha = '${{github.event.workflow_run.head_sha}}';
+            
+            /** @type {{old_body: string}} */
+            const {issue_number, old_body} = await (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 === pull_head_sha) {
+                    return {issue_number: pull.number, old_body: pull.body};
+                  }
+                }
+              }
+              return {};  
+            })();            
+            if (issue_number) {
+              core.info(`Using pull request ${issue_number}`);
+            } else {
+              return core.error(`No matching pull request found`);
+            }
+            
+            let old_sha = /\<\!-- commit-sha: (?<sha>[a-z0-9]+) --\>/i.exec(old_body)?.groups?.sha
+            if (old_sha != undefined && pull_head_sha == old_sha) return core.error("Comment is already up-to-date!")
+            
+            const artifacts = await github.paginate(
+              github.rest.actions.listWorkflowRunArtifacts, {owner, repo, run_id});
+            if (!artifacts.length) {
+              return core.error(`No artifacts found, perhaps Build Template was skipped`);
+            }
+            const template = artifacts[0];
+            
+            let body = `<!-- commit-sha: ${pull_head_sha} -->\n`;
+            body +=`## Download the template for this pull request: \n\n`;
+            body += `> [!NOTE]  
+            > This is auto generated from [\`${{ github.workflow }}\`](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }})\n`;  
+            body += `- via manual download: [${template.name}.zip](https://nightly.link/${owner}/${repo}/actions/artifacts/${template.id}.zip)\n`;
+            body += `- via PROS Integrated Terminal: \n \`\`\`
+            curl -o ${template.name}.zip https://nightly.link/${owner}/${repo}/actions/artifacts/${template.id}.zip;
+            pros c fetch ${template.name}.zip;
+            pros c apply ${template.name};
+            rm ${template.name}.zip;
+            \`\`\``;
+            
+            core.info(`Review thread message body: \n${body}`);
+            
+            await upsertComment(owner, repo, issue_number,
+              "nightly-link", old_body, body);