feat(actions): Add PR previews

.github/upload-preview.js

@@ -0,0 +1,97 @@
+const fs = require('fs');
+const path = require('path');
+const { Octokit } = require('@octokit/rest');
+const octokit = new Octokit({ auth: process.env.GH_PR_TOKEN });
+const surge = require('surge');
+const publishFn = surge().publish();
+
+// From github actions
+const ghrepo = process.env.GITHUB_REPOSITORY || '';
+
+const owner = process.env.CIRCLE_PROJECT_USERNAME || ghrepo.split('/')[0]; // patternfly
+const repo = process.env.CIRCLE_PROJECT_REPONAME || ghrepo.split('/')[1];
+const prnum = process.env.CIRCLE_PR_NUMBER || process.env.GH_PR_NUM;
+const prbranch = process.env.CIRCLE_BRANCH || process.env.GITHUB_REF.split('/').pop();
+
+const uploadFolder = process.argv[2];
+if (!uploadFolder) {
+  console.log('Usage: upload-preview uploadFolder');
+  process.exit(1);
+}
+
+const uploadFolderName = path.basename(uploadFolder);
+let uploadURL = `${repo}-${prnum ? `pr-topology-${prnum}` : prbranch}`.replace(/[\/|\.]/g, '-');
+
+switch(uploadFolderName) {
+  case 'coverage':
+    uploadURL += '-a11y.surge.sh';
+    break;
+  case 'public':
+    if (!prnum && prbranch === 'main') {
+      uploadURL = 'https://pf-extensions.surge.sh/';
+    }
+    else {
+      uploadURL += '.surge.sh';
+    }
+    break;
+  default:
+    uploadURL += `-${uploadFolderName}`;
+    uploadURL += '.surge.sh';
+    break;
+}
+
+publishFn({
+  project: uploadFolder,
+  p: uploadFolder,
+  domain: uploadURL,
+  d: uploadURL,
+  e: 'https://surge.surge.sh',
+  endpoint: 'https://surge.surge.sh'
+});
+
+function tryAddComment(comment, commentBody) {
+  if (!commentBody.includes(comment)) {
+    return comment;
+  }
+  return '';
+}
+
+if (prnum) {
+  octokit.issues.listComments({
+    owner,
+    repo,
+    issue_number: prnum
+  })
+    .then(res => res.data)
+    .then(comments => {
+      let commentBody = '';
+      const existingComment = comments.find(comment => comment.user.login === 'patternfly-build');
+      if (existingComment) {
+        commentBody += existingComment.body.trim();
+        commentBody += '\n\n';
+      }
+
+      if (uploadFolderName === 'public') {
+        commentBody += tryAddComment(`Preview: https://${uploadURL}`, commentBody);
+      }
+      else if (uploadFolderName === 'coverage') {
+        commentBody += tryAddComment(`A11y report: https://${uploadURL}`, commentBody);
+      }
+
+      if (existingComment) {
+        octokit.issues.updateComment({
+          owner,
+          repo,
+          comment_id: existingComment.id,
+          body: commentBody
+        }).then(() => console.log('Updated comment!'));
+      } else {
+        octokit.issues.createComment({
+          owner,
+          repo,
+          issue_number: prnum,
+          body: commentBody
+        }).then(() => console.log('Created comment!'));
+      }
+    });
+}

.github/workflows/pr-preview.yml

@@ -0,0 +1,58 @@
+name: pr-preview
+on: pull_request_target
+jobs:
+  build-upload:
+    runs-on: ubuntu-latest
+    env:
+      SURGE_LOGIN: ${{ secrets.SURGE_LOGIN }}
+      SURGE_TOKEN: ${{ secrets.SURGE_TOKEN }}
+      GH_PR_TOKEN: ${{ secrets.GH_PR_TOKEN }}
+      GH_PR_NUM:   ${{ github.event.number }}
+    steps:
+      - uses: actions/checkout@v2
+      # Yes, we really want to checkout the PR
+      - run: |
+          git fetch origin pull/$GH_PR_NUM/head:tmp
+          git checkout tmp
+      - run: |
+          git rev-parse origin/main
+          git rev-parse HEAD
+          git rev-parse origin/main..HEAD
+          git log origin/main..HEAD --format="%b"
+      # Yes, we really want to checkout the PR
+      # Injected by generate-workflows.js
+      - uses: actions/setup-node@v1
+        with:
+          node-version: '18'
+      - uses: actions/cache@v2
+        id: yarn-cache
+        name: Load npm deps from cache
+        with:
+          path: '**/node_modules'
+          key: ${{ runner.os }}-yarn-14-${{ hashFiles('yarn.lock') }}
+      - run: yarn install --frozen-lockfile
+        if: steps.yarn-cache.outputs.cache-hit != 'true'
+      - run: yarn lint:js
+        name: Lint JS
+        if: always()
+      - run: yarn lint:md
+        name: Lint MD
+        if: always()
+      - run: yarn build
+        name: Build component groups
+      - uses: actions/cache@v2
+        id: docs-cache
+        name: Load webpack cache
+        with:
+          path: '.cache'
+          key: ${{ runner.os }}-v4-${{ hashFiles('yarn.lock') }}
+      - run: yarn build:docs
+        name: Build docs
+      - run: node .github/upload-preview.js public
+        name: Upload docs
+        if: always()
+      - run: yarn serve:docs & yarn test:a11y
+        name: a11y tests
+      - run: node .github/upload-preview.js coverage
+        name: Upload a11y report
+        if: always()