import com.kotlinspringvue.backend.repository.UserRepository

import org.springframework.beans.factory.annotation.Autowired
import org.springframework.security.core.userdetails.UserDetails
import org.springframework.security.core.userdetails.UserDetailsService
import org.springframework.security.core.userdetails.UsernameNotFoundException
import org.springframework.stereotype.Service
import org.springframework.security.core.GrantedAuthority
import org.springframework.security.core.authority.SimpleGrantedAuthority
import java.util.stream.Collectors

@Service
class UserDetailsServiceImpl: UserDetailsService {

   @Autowired
   lateinit var userRepository: UserRepository

   @Throws(UsernameNotFoundException::class)
   override fun loadUserByUsername(username: String): UserDetails {
       val user = userRepository.findByUsername(username).get()
               ?: throw UsernameNotFoundException("User '$username' not found")

       val authorities: List<GrantedAuthority> = user.roles!!.stream().map({ role -> SimpleGrantedAuthority(role.name)}).collect(Collectors.toList<GrantedAuthority>())

       return org.springframework.security.core.userdetails.User
               .withUsername(username)
               .password(user.password)
               .authorities(authorities)
               .accountExpired(false)
               .accountLocked(false)
               .credentialsExpired(false)
               .disabled(false)
               .build()
   }
}