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authentication-logic

Guide to using Better Auth for client and server-side authentication.

aiskillstore/marketplace0installs429starsSecurity

SKILL.md

Full skill instructions

Authentication Logic

Overview

We use Better Auth (better-auth) for identifying users.

Config

  • Client: lib/​auth-client.ts exports authClient.
  • Server: lib/​auth.ts exports auth.

Client-Side Usage

Use authClient for signing in, signing out, and checking session state in Client Components.

import { authClient } from "@/​lib/​auth-client";

// Sign In
await authClient.signIn.email({
  email,
  password,
});

// Social Sign In
await authClient.signIn.social({
  provider: "google",
  callbackURL: "/​onboarding", 
});

// Sign Out
await authClient.signOut();

Server-Side Usage

Use auth.api.getSession for protecting API routes or Server Actions.

import { auth } from "@/​lib/​auth";
import { headers } from "next/​headers";

const session = await auth.api.getSession({
  headers: await headers()
});

if (!session) {
  return new Response("Unauthorized", { status: 401 });
}

AuthBar Component

  • Located at textbook/​src/​components/​AuthBar/​index.tsx.
  • Displays user avatar or login button.
  • Fetches session from /​api/​auth/​session (Next.js API route proxying Better Auth).