import NextAuth from "next-auth";
import { PrismaAdapter } from "@auth/prisma-adapter";
import Credentials from "next-auth/providers/credentials";
import { db } from "@/lib/db";
import bcrypt from "bcryptjs";
import { Role } from "@prisma/client";

export const { handlers, auth, signIn, signOut } = NextAuth({
  adapter: PrismaAdapter(db) as any,
  session: { strategy: "jwt" },
  pages: {
    signIn: "/login",
  },
  callbacks: {
    async jwt({ token, user }) {
      if (user) {
        token.id = user.id;
        token.role = (user as { role: Role }).role;
        token.mustChangePassword = (user as { mustChangePassword?: boolean }).mustChangePassword ?? false;
      }
      return token;
    },
    async session({ session, token }) {
      if (token && session.user) {
        session.user.id = token.id as string;
        session.user.role = token.role as Role;
        session.user.mustChangePassword = token.mustChangePassword as boolean;
      }
      return session;
    },
  },
  providers: [
    Credentials({
      name: "credentials",
      credentials: {
        email: { label: "Email", type: "email" },
        password: { label: "Password", type: "password" },
      },
      async authorize(credentials) {
        if (!credentials?.email || !credentials?.password) return null;

        const user = await db.user.findUnique({
          where: { email: credentials.email as string },
        });

        if (!user || !user.passwordHash || !user.isActive) return null;

        const isValid = await bcrypt.compare(
          credentials.password as string,
          user.passwordHash
        );

        if (!isValid) return null;

        return {
          id: user.id,
          email: user.email,
          name: user.name,
          image: user.image,
          role: user.role,
          mustChangePassword: user.mustChangePassword,
        };
      },
    }),
  ],
});