import NextAuth from "next-auth"
import CredentialsProvider from "next-auth/providers/credentials"
import { PrismaAdapter } from "@next-auth/prisma-adapter"
import { PrismaClient } from "@prisma/client"
import bcrypt from "bcryptjs"

const prisma = new PrismaClient()

export default NextAuth({
  adapter: PrismaAdapter(prisma),
  providers: [
    CredentialsProvider({
      name: "Credentials",
      credentials: {
        username: { label: "Username", type: "text", placeholder: "seu_usuario" },
        password: { label: "Password", type: "password" }
      },
      async authorize(credentials) {
        if (!credentials?.username || !credentials?.password) return null
        
        const user = await prisma.user.findUnique({
          where: { username: credentials.username }
        })

        if (user && user.password) {
          const isValid = await bcrypt.compare(credentials.password, user.password)
          if (isValid) {
            return { 
              id: user.id, 
              email: user.email, 
              name: user.name || user.username,
              username: user.username
            }
          }
        }
        return null
      }
    })
  ],
  secret: process.env.NEXTAUTH_SECRET,
  session: { strategy: "jwt" },
  pages: {
    signIn: "/signin",
  },
  callbacks: {
    async session({ session, token, user }) {
      if (session.user) {
        session.user.id = token.sub
      }
      return session
    }
  }
})