From 36a560dcd0dc1efe73a35cf581c9610cbf3edf2b Mon Sep 17 00:00:00 2001
From: Joseph T Lyons <JosephTLyons@gmail.com>
Date: Sun, 11 Aug 2024 14:18:19 -0400
Subject: [PATCH] Update the dangerfile to check for issue links

---
 script/danger/dangerfile.ts | 30 +++++++++++++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

diff --git a/script/danger/dangerfile.ts b/script/danger/dangerfile.ts
index 110a630d1f..8ff691774d 100644
--- a/script/danger/dangerfile.ts
+++ b/script/danger/dangerfile.ts
@@ -9,8 +9,10 @@ prHygiene({
 });
 
 const RELEASE_NOTES_PATTERN = new RegExp("Release Notes:\\r?\\n\\s+-", "gm");
+const body = danger.github.pr.body;
+
+const hasReleaseNotes = RELEASE_NOTES_PATTERN.test(body);
 
-const hasReleaseNotes = RELEASE_NOTES_PATTERN.test(danger.github.pr.body);
 if (!hasReleaseNotes) {
   warn(
     [
@@ -33,3 +35,29 @@ if (!hasReleaseNotes) {
     ].join("\n"),
   );
 }
+
+const ISSUE_LINK_PATTERN = new RegExp(
+  "(?:^|\\s)(?:#(\\d+)|https:\\/\\/github\\.com\\/zed-industries\\/zed\\/issues\\/(\\d+))",
+  "g",
+);
+
+const includesIssueUrl = ISSUE_LINK_PATTERN.test(body);
+
+if (includesIssueUrl) {
+  const matches = body.match(ISSUE_LINK_PATTERN);
+  const issues = matches
+    .map((match) =>
+      match
+        .replace(/^#/, "")
+        .replace(/https:\/\/github\.com\/zed-industries\/zed\/issues\//, ""),
+    )
+    .filter((issue, index, self) => self.indexOf(issue) === index);
+
+  warn(
+    [
+      "This PR includes links to the following GitHub Issues: " +
+        issues.join(", "),
+      "If this pull requests aims to close an issue, please include a `Closes #ISSUE` line at the top of the PR body.",
+    ].join("\n"),
+  );
+}