Arnaud
f0397740d7
Usernames are auto-assigned at signup (shipped earlier this session) but there was still no way to change one. Adds a Username field to Settings, validated client- and server-side against the same 3-20-char lowercase/digits/underscore pattern used for generation, with a 409 on collision (excluding the user's own current username). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
45 lines
1.5 KiB
TypeScript
45 lines
1.5 KiB
TypeScript
import { db, users, eq } from "@epicure/db";
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export const USERNAME_PATTERN = /^[a-z0-9_]{3,20}$/;
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/** Lowercase alnum-and-underscore slug, at least 3 chars, at most 20. */
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function slugify(seed: string): string {
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const base = seed
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.split("@")[0]! // if seed is an email, drop the domain
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.toLowerCase()
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.replace(/[^a-z0-9_]/g, "")
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.slice(0, 20);
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return base.length >= 3 ? base : `${base}user`.slice(0, 20);
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}
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/**
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* Every user needs a username — it's the only thing profile pages, follows,
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* and people-search key on, but there's no signup-time or settings UI to set
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* one. Called from the user.create.before hook (lib/auth/server.ts) so every
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* account gets one automatically, generated from their name or email.
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*/
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export async function generateUniqueUsername(seed: string): Promise<string> {
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const base = slugify(seed);
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let candidate = base;
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let suffix = 0;
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while (true) {
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const existing = await db.query.users.findFirst({
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where: eq(users.username, candidate),
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columns: { id: true },
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});
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if (!existing) return candidate;
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suffix += 1;
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candidate = `${base}${suffix}`.slice(0, 20);
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}
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}
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/** True if `candidate` belongs to some other user — a user re-saving their own current username is not a conflict. */
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export async function isUsernameTaken(candidate: string, excludeUserId: string): Promise<boolean> {
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const existing = await db.query.users.findFirst({
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where: eq(users.username, candidate),
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columns: { id: true },
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});
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return !!existing && existing.id !== excludeUserId;
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}
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