ci: add task to cleanup docs previews on merge commits (#1647)

Closes #1620

.circleci/config.yml

@@ -191,6 +191,17 @@ jobs:
           at: dist
       - run: yarn run deploy:builds
 
+  cleanup-previews:
+    <<: *run_in_node
+    steps:
+      - add_ssh_keys:
+          fingerprints:
+            - "c9:c2:b4:5e:13:23:b6:6d:d8:29:3e:68:c6:40:9c:ec"
+      - checkout
+      - restore_cache:
+          key: *cache_key
+      - run: yarn run cleanup:previews
+
 workflows:
   version: 2
   build-test-deploy:
@@ -230,3 +241,9 @@ workflows:
           filters:
             branches:
               only: master
+      - cleanup-previews:
+          requires:
+            - install
+          filters:
+            branches:
+              only: master

build/cleanup-previews.ts

@@ -0,0 +1,15 @@
+import * as tasks from './tasks';
+import { createBuilder } from './util';
+import { packages } from './config';
+
+const cleanup = createBuilder([
+  ['Cleanup docs previews', tasks.cleanupDocsPreviews],
+]);
+
+cleanup({
+  scope: '',
+  packages,
+}).catch(err => {
+  console.error(err);
+  process.exit(1);
+});

build/tasks.ts

@@ -149,3 +149,49 @@ export async function postGithubComment() {
     });
   }
 }
+
+export async function cleanupDocsPreviews() {
+  const repoUrl = '[email protected]:ngrx/ngrx-io-previews.git';
+  const repoDir = `./tmp/docs-preview-cleanup`;
+  const token = process.env.GITHUB_API_KEY;
+  const octokit = require('@octokit/rest')();
+
+  octokit.authenticate({ type: 'token', token });
+
+  const q = 'repo:ngrx/platform is:pr is:closed';
+
+  const { data }: { data: { items: any[] } } = await octokit.search.issues({
+    q,
+    per_page: 100,
+  });
+
+  await util.cmd('rm -rf', [`${repoDir}`]);
+  await util.cmd('mkdir ', [`-p ${repoDir}`]);
+  await process.chdir(`${repoDir}`);
+  await util.git([`init`]);
+  await util.git([`remote add origin ${repoUrl}`]);
+  await util.git([`fetch origin master --depth=1`]);
+  await util.git(['checkout origin/master -b master']);
+
+  const prsToRemove = data.items.reduce(
+    (prev: string[], curr: { number: number }) => {
+      prev.push(`pr${curr.number}*`);
+
+      return prev;
+    },
+    []
+  );
+
+  await util.cmd('rm -rf', [`${prsToRemove.join(' ')}`]);
+  await util.git([`config user.name "ngrxbot"`]);
+  await util.git([`config user.email "${process.env.GITHUB_BOT_EMAIL}"`]);
+  await util.git(['add --all']);
+
+  try {
+    await util.git([
+      `commit -m "chore: cleanup previews for closed pull requests"`,
+    ]);
+  } catch (e) {}
+
+  await util.git(['push origin master --force']);
+}

package.json

@@ -7,6 +7,7 @@
     "build": "yarn bazel build //modules/...",
     "deploy:builds": "ts-node ./build/deploy-build.ts",
     "deploy:preview": "ts-node ./build/deploy-preview.ts",
+    "cleanup:previews": "ts-node ./build/cleanup-previews.ts",
     "test:unit": "node ./tests.js",
     "test": "nyc yarn run test:unit",
     "test:bazel": "yarn bazel test //modules/...",