import NextAuth from "next-auth"
import CredentialsProvider from "next-auth/providers/credentials"
import { prisma } from "@/app/lib/prisma"
import bcrypt from "bcryptjs"

const handler = NextAuth({
  providers: [
    CredentialsProvider({
      name: "Credentials",
      credentials: {
        username: { label: "用户名", type: "text" },
        password: { label: "密码", type: "password" },
      },
      async authorize(credentials) {
        if (!credentials?.username || !credentials?.password) {
          return null
        }

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

        if (!user) {
          return null
        }

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

        if (!isValid) {
          return null
        }

        return {
          id: user.id.toString(),
          email: user.email,
          name: user.name || user.username,
          role: user.role,
        }
      },
    }),
  ],
  session: {
    strategy: "jwt",
  },
  callbacks: {
    async jwt({ token, user }) {
      if (user) {
        token.role = user.role
      }
      return token
    },
    async session({ session, token }) {
      if (session.user) {
        (session.user as any).role = token.role
      }
      return session
    },
  },
  pages: {
    signIn: "/admin/login",
  },
})

export { handler as GET, handler as POST }