import NextAuth from "next-auth";
import Credentials from "next-auth/providers/credentials";
import { prisma } from "./prisma";
import bcrypt from "bcryptjs";
import type { Role } from "@/prisma/generated/prisma/client";

export const { handlers, signIn, signOut, auth } = NextAuth({
  trustHost: true,
  providers: [
    Credentials({
      credentials: {
        email: { label: "Email", type: "email" },
        password: { label: "Password", type: "password" },
      },
      authorize: async (credentials) => {
        if (!credentials?.email || !credentials?.password) {
          return null;
        }

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

        if (!user) {
          return null;
        }

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

        if (!isPasswordValid) {
          return null;
        }

        return {
          id: user.id,
          email: user.email,
          username: user.username,
          role: user.role,
        };
      },
    }),
  ],
  callbacks: {
    jwt: async ({ token, user }) => {
      if (user) {
        token.id = user.id;
        token.username = user.username;
        token.role = user.role;
      }
      return token;
    },
    session: async ({ session, token }) => {
      if (session.user && token) {
        session.user.id = token.id as string;
        session.user.username = token.username as string;
        session.user.role = token.role as Role;
      }
      return session;
    },
  },
  pages: {
    signIn: "/login",
  },
  session: {
    strategy: "jwt",
  },
});