import { User } from "../../types";
import { SignInOptions } from "../AuthProvider";

// NextAuth session type (simplified)
interface NextAuthSession {
  user?: {
    id?: string;
    email?: string;
    name?: string;
    image?: string;
  };
}

// Helper function to convert NextAuth user to our User type
const convertNextAuthUser = (
  nextAuthUser: NextAuthSession["user"]
): User | null => {
  if (!nextAuthUser) return null;

  return {
    id: nextAuthUser.id || "",
    email: nextAuthUser.email || "",
    name: nextAuthUser.name || "",
    avatar_url: nextAuthUser.image,
    role: "customer", // Default role, can be customized
    created_at: new Date().toISOString(),
    updated_at: new Date().toISOString(),
  };
};

// NextAuth adapter for AuthProvider
export const createNextAuthAdapter = (nextAuth?: {
  getSession: () => Promise<NextAuthSession | null>;
  signIn: (provider?: string, options?: SignInOptions) => Promise<void>;
  signOut: () => Promise<void>;
}) => {
  if (!nextAuth) {
    console.warn("NextAuth not provided to adapter");
    return {};
  }

  return {
    getSession: async () => {
      const session = await nextAuth.getSession();
      return {
        user: convertNextAuthUser(session?.user),
      };
    },

    signInAdapter: async (provider?: string, options?: SignInOptions) => {
      await nextAuth.signIn(provider, options);
    },

    signOutAdapter: async () => {
      await nextAuth.signOut();
    },
  };
};