use keyid builder

src/command.ts

@@ -1,7 +1,7 @@
 import fs from "node:fs";
 import markdownit from 'markdown-it'
 import { slugRegex } from "./article.js";
-import { newUser, get as getUserByNickname, getFollowerInboxes } from "./user.js";
+import { newUser, get as getUserByNickname, getFollowerInboxes, keyIdFromNickname } from "./user.js";
 import { insert as insertArticle } from "./article.js";
 import { add as addToOutbox } from "./outbox.js";
 import { createArticleActivity, sendAll } from "./activity.js";
@@ -62,7 +62,7 @@ ${rendered}
 
     await addToOutbox(article.id);
 
-    const keyId = fillRoute("actor", user.nickname) + "#main-key";
+    const keyId = keyIdFromNickname(user.nickname);
     const inboxes = await getFollowerInboxes(user.id);
     const activity = createArticleActivity(article, user);
     const success = await sendAll(keyId, user.private_key, activity, inboxes);

src/user.ts

@@ -107,4 +107,4 @@ export const getFollowerInboxes = async (userId: number): Promise<string[]> =>
         return [...inboxes];
     });
 
-export const getKeyId = (nickname: string) => fillRoute("actor", nickname) + "#main-key";
+export const keyIdFromNickname = (nickname: string) => fillRoute("actor", nickname) + "#main-key";