import { PrismaAdapter } from "@auth/prisma-adapter";
import bcrypt from "bcryptjs";
import type { NextAuthOptions } from "next-auth";
import type { Adapter } from "next-auth/adapters";
import CredentialsProvider from "next-auth/providers/credentials";
import { prisma } from "@/lib/prisma";

process.env.NEXTAUTH_URL ??= process.env.AUTH_URL;
process.env.NEXTAUTH_SECRET ??= process.env.AUTH_SECRET;

export const authOptions: NextAuthOptions = {
  adapter: PrismaAdapter(prisma) as Adapter,
  session: {
    strategy: "jwt",
  },
  pages: {
    error: "/admin/login",
    signIn: "/admin/login",
  },
  providers: [
    CredentialsProvider({
      name: "Admin Login",
      credentials: {
        email: { label: "Email", type: "email" },
        password: { label: "Password", type: "password" },
      },
      async authorize(credentials) {
        const email = credentials?.email?.toLowerCase().trim();
        const password = credentials?.password;

        if (!email || !password) {
          return null;
        }

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

          if (!user?.passwordHash) {
            return null;
          }

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

          if (!isValid) {
            return null;
          }

          return {
            id: user.id,
            email: user.email,
            name: user.name,
            image: user.image,
            role: user.role,
          };
        } catch (error) {
          console.error("Credentials authorize failed", error);
          return null;
        }
      },
    }),
  ],
  callbacks: {
    async jwt({ token, user }) {
      if (user) {
        token.id = user.id;
        token.role = user.role;
      }

      return token;
    },
    async session({ session, token }) {
      if (session.user) {
        session.user.id = token.id;
        session.user.role = token.role;
      }

      return session;
    },
  },
  secret: process.env.AUTH_SECRET ?? process.env.NEXTAUTH_SECRET,
};