import { betterAuth } from "better-auth";
import { drizzleAdapter } from "better-auth/adapters/drizzle";
import { anonymous } from "better-auth/plugins/anonymous";
import type { Db } from "./db/client";
import * as authSchema from "./db/auth-schema";

export interface AuthSettings {
  secret: string;
  baseUrl: string;
}

/** Better Auth with guest (anonymous) sign-in, storing users and sessions in Postgres. */
export function createAuth(db: Db, settings: AuthSettings) {
  return betterAuth({
    database: drizzleAdapter(db, { provider: "pg", schema: authSchema }),
    secret: settings.secret,
    baseURL: settings.baseUrl,
    basePath: "/api/auth",
    plugins: [anonymous()],
  });
}

export type Auth = ReturnType<typeof createAuth>;