Close PR if it has not had any activity in the past 2 weeks and has `…

…pr/last-call` (#118)

* Close PR if it has not had any activity in the past 2 weeks and has `pr/last-call`

As stated in https://github.com/go-gitea/gitea/blob/main/CONTRIBUTING.md#final-call

Signed-off-by: Yarden Shoham <git@yardenshoham.com>
Co-authored-by: delvh <dev.lh@web.de>

README.md

@@ -72,6 +72,11 @@ has passed since they were updated.
 The script can execute some actions like updating a PR's branch if requested by
 a maintainer through a `giteabot/*` label.
 
+### Last call
+
+The script will close PRs with the label `pr/last-call` if two weeks have passed
+since they were updated.
+
 ## Usage
 
 Set the following environment variables:

src/github.ts

@@ -53,6 +53,19 @@ export const fetchOpenIssuesWithLabel = async (label: string) => {
   return json;
 };
 
+// returns a list of open PRs with the given label
+export const fetchOpenPrsWithLabel = async (label: string) => {
+  const response = await fetch(
+    `${GITHUB_API}/search/issues?q=` +
+      encodeURIComponent(
+        `is:pr is:open label:${label} repo:go-gitea/gitea`,
+      ),
+    { headers: HEADERS },
+  );
+  const json = await response.json();
+  return json;
+};
+
 // returns a list of PRs pending merge (have the label reviewed/wait-merge)
 export const fetchPendingMerge = async () => {
   const response = await fetch(
@@ -503,3 +516,16 @@ export const closeIssue = async (issueNumber: number) => {
   );
   return response.json();
 };
+
+// closes the given PR
+export const closePr = async (prNumber: number) => {
+  const response = await fetch(
+    `${GITHUB_API}/repos/go-gitea/gitea/pulls/${prNumber}`,
+    {
+      method: "PATCH",
+      headers: HEADERS,
+      body: JSON.stringify({ state: "closed" }),
+    },
+  );
+  return response.json();
+};

src/lastCall.ts

@@ -0,0 +1,28 @@
+import { addComment, closePr, fetchOpenPrsWithLabel } from "./github.ts";
+
+export const run = async () => {
+  // get all issues with the label "pr/last-call"
+  const issuesWithStatusPrLastCall = await fetchOpenPrsWithLabel(
+    "pr/last-call",
+  );
+  return Promise.all(issuesWithStatusPrLastCall.items.map(handlePr));
+};
+
+// close PR if two weeks have passed since it was last updated
+const handlePr = async (pr: {
+  number: number;
+  updated_at: string;
+}) => {
+  const twoWeeksAgo = (new Date(Date.now() - 1000 * 60 * 60 * 24 * 14))
+    .getTime();
+  if ((new Date(pr.updated_at)).getTime() < twoWeeksAgo) {
+    console.log(`Closing PR #${pr.number} due to pr/last-call timeout`);
+    await addComment(
+      pr.number,
+      "This pull request has a last call and has not had any activity in the past two weeks. Consider it to be a [polite refusal](https://github.com/go-gitea/gitea/blob/main/CONTRIBUTING.md#final-call). :tea:",
+    );
+
+    // close PR
+    await closePr(pr.number);
+  }
+};

src/webhook.ts

@@ -10,6 +10,7 @@ import * as comments from "./comments.ts";
 import * as lock from "./lock.ts";
 import * as prActions from "./prActions.ts";
 import * as feedback from "./feedback.ts";
+import * as lastCall from "./lastCall.ts";
 
 const secret = Deno.env.get("BACKPORTER_GITHUB_SECRET");
 
@@ -32,11 +33,12 @@ webhook.on("push", ({ payload }) => {
     backport.run();
   }
 
-  // we should take this opportunity to run the label, merge queue, lock, and feedback maintenance
+  // we should take this opportunity to run the label, merge queue, lock, feedback, and last call maintenance
   labels.run();
   mergeQueue.run();
   lock.run();
   feedback.run();
+  lastCall.run();
 });
 
 // on pull request labeling events, run the label and merge queue maintenance