feat(webhooks): add comment notification support

locales/en.ftl

@@ -232,3 +232,11 @@ e_project_item_status_changed =
     👉 status: <b>{ $status }</b>
 
     { $repoHashtag } #project
+
+e_comment_created =
+    💬 <a href="{ $ghProfileUrl }">{ $commentAuthor }</a> { $telegramStatus } commented on <a href="{ $commentLink }">{ $repoName }#{ $number }</a>:
+
+    <b>{ $title }</b>
+    <blockquote>{ $commentPreview }</blockquote>
+
+    { $repoHashtag } #{ $type }

src/lib/github/webhooks/handlers/comment-created.ts

@@ -0,0 +1,55 @@
+import type { HandlerFunction } from "@octokit/webhooks/types";
+
+import { bot } from "#bot";
+
+import { escapeHtml } from "../../../escape-html.ts";
+import { botText, getRepoHashtag, getUser } from "./_utils.ts";
+
+export const commentCreatedCallback: HandlerFunction<
+  "issue_comment.created" | "pull_request_review_comment.created",
+  unknown
+> = async (event) => {
+  const comment = event.payload.comment;
+  const repository = event.payload.repository;
+  const sender = event.payload.sender;
+
+  const user = await getUser(sender);
+  const repoHashtag = getRepoHashtag(repository.name);
+
+  let title: string;
+  let number: number;
+  let type: "issue" | "pull_request";
+
+  if ("issue" in event.payload) {
+    const issue = event.payload.issue;
+    title = issue.title;
+    number = issue.number;
+    type = "issue";
+  } else if ("pull_request" in event.payload) {
+    const pr = event.payload.pull_request;
+    title = pr.title;
+    number = pr.number;
+    type = "pull_request";
+  } else {
+    return;
+  }
+
+  const commentLink = comment.html_url;
+  const commentPreview = comment.body.length > 100 ? `${comment.body.substring(0, 100)}...` : comment.body;
+
+  await bot.announce(
+    botText("e_comment_created", {
+      commentAuthor: escapeHtml(user.ghDisplayname),
+      telegramStatus: user.telegramStatus,
+      repoName: escapeHtml(repository.full_name),
+      repoHashtag: escapeHtml(repoHashtag),
+      title: escapeHtml(title),
+      number: number.toString(),
+      commentPreview: escapeHtml(commentPreview),
+      commentLink: escapeHtml(commentLink),
+      ghProfileUrl: escapeHtml(user.ghProfileUrl),
+      type,
+    }),
+    { link_preview_options: { prefer_small_media: true, url: commentLink } },
+  );
+};

src/lib/github/webhooks/index.ts

@@ -1,6 +1,7 @@
 import { Webhooks } from "@octokit/webhooks";
 import { config } from "#config";
 
+import { commentCreatedCallback } from "./handlers/comment-created.ts";
 import { issuesAssignedCallback } from "./handlers/issues-assigned.ts";
 import { issuesOpenedCallback } from "./handlers/issues-opened.ts";
 import { projectItemEditedCallback } from "./handlers/projects-item-edited.ts";
@@ -20,4 +21,6 @@ webhooks.on("pull_request.opened", withGuards(pullRequestOpenedCallback));
 webhooks.on("release.created", withGuards(releaseCreatedCallback));
 webhooks.on("repository.created", withGuards(repositoryCreatedCallback));
 webhooks.on("star.created", withGuards(starCreatedCallback));
-webhooks.on("projects_v2_item.edited", withGuards(projectItemEditedCallback, { skipRepositoryCheck: true }));
+webhooks.on("issue_comment.created", withGuards(commentCreatedCallback));
+webhooks.on("pull_request_review_comment.created", withGuards(commentCreatedCallback));
+webhooks.on("projects_v2_item.edited", withGuards(projectItemEditedCallback));