import { createAuthClient } from "better-auth/react";
import { jwtClient, inferAdditionalFields } from "better-auth/client/plugins";
import type { Auth } from "@micprotocol/api";

const BETTER_AUTH_URL = process.env.NEXT_PUBLIC_API_URL || "http://localhost:4000";

/**
 * Better Auth client — mirrors the server's jwt plugin so the client
 * can request a JWT session token for the Authorization header, and
 * inferAdditionalFields keeps session types in sync with the server's
 * auth config type export.
 */
export const authClient = createAuthClient({
    baseURL: BETTER_AUTH_URL,
    plugins: [
        jwtClient(),
        inferAdditionalFields<Auth>(),
    ],
    fetchOptions: {
        // Always send cookies cross-origin (needed for subdomain routing)
        credentials: "include",
    },
});

export const { signIn, signUp, signOut, useSession } = authClient;