reduce frequency of label presence checks

Author: matt-fidd

src/handlers/index.ts

@@ -1,11 +1,13 @@
 import { Probot } from 'probot';
 
 import CheckSuite from './checkSuite.js';
+import Installation from './installation.js';
 import PullRequest from './pullRequest.js';
 import PullRequestReview from './pullRequestReview.js';
 
 export default (app: Probot) => {
   CheckSuite(app);
+  Installation(app);
   PullRequest(app);
   PullRequestReview(app);
 };

src/handlers/installation.ts

@@ -0,0 +1,66 @@
+import { Probot, ProbotOctokit } from 'probot';
+
+import { labels } from '../labels.js';
+
+const ensureLabelsExist = async (
+  owner: string,
+  repo: string,
+  octokit: ProbotOctokit,
+) => {
+  const existingLabels = (
+    await octokit.issues.listLabelsForRepo({
+      owner,
+      repo,
+    })
+  ).data;
+
+  for (const label of Object.values(labels)) {
+    const existing = existingLabels.find(l => l.name === label.name);
+    const color = label.color.substring(1).toUpperCase();
+
+    if (!existing) {
+      await octokit.issues.createLabel({
+        owner,
+        repo,
+        name: label.name,
+        color,
+      });
+
+      continue;
+    }
+
+    if (existing.color.toUpperCase() !== color) {
+      await octokit.issues.updateLabel({
+        owner,
+        repo,
+        name: label.name,
+        color,
+      });
+
+      continue;
+    }
+  }
+};
+
+export default (app: Probot) => {
+  app.on(
+    [
+      'installation.created',
+      'installation.new_permissions_accepted',
+      'installation.unsuspend',
+      'installation_repositories.added',
+    ],
+    async context => {
+      const installationId = context.payload.installation.id;
+
+      const repos =
+        await context.octokit.apps.listReposAccessibleToInstallation({
+          installation_id: installationId,
+        });
+
+      for (const r of repos.data.repositories) {
+        await ensureLabelsExist(r.owner.login, r.name, context.octokit);
+      }
+    },
+  );
+};

src/index.ts

@@ -1,7 +1,6 @@
 import { Probot } from 'probot';
 
 import Handlers from './handlers/index.js';
-import { labels } from './labels.js';
 
 export default (app: Probot) => {
   /*
@@ -17,48 +16,6 @@ export default (app: Probot) => {
   });
   */
 
-  app.on(
-    ['pull_request', 'pull_request_review', 'check_suite'],
-    async context => {
-      const owner = context.payload.repository.owner.login;
-      const repo = context.payload.repository.name;
-
-      const existingLabels = (
-        await context.octokit.issues.listLabelsForRepo({
-          owner,
-          repo,
-        })
-      ).data;
-
-      for (const label of Object.values(labels)) {
-        const existing = existingLabels.find(l => l.name === label.name);
-        const color = label.color.substring(1).toUpperCase();
-
-        if (!existing) {
-          await context.octokit.issues.createLabel({
-            owner,
-            repo,
-            name: label.name,
-            color,
-          });
-
-          continue;
-        }
-
-        if (existing.color.toUpperCase() !== color) {
-          await context.octokit.issues.updateLabel({
-            owner,
-            repo,
-            name: label.name,
-            color,
-          });
-
-          continue;
-        }
-      }
-    },
-  );
-
   app.log.info('probot loaded');
   Handlers(app);
 };