import org.springframework.data.jpa.repository.JpaRepository
import org.springframework.stereotype.Repository
import java.util.concurrent.TimeUnit
import javax.inject.Inject
import javax.persistence.Entity
import javax.persistence.Id

class Horacek @Inject constructor(private val developerRepository: DeveloperRepository,
                                  private val mailService: MailService) : AbstractAeviManager {

    override fun behaviour(): EgoIncrease {
        developerRepository.findAll().forEach {
            TimeUnit.DAYS.sleep(7)
            mailService.send(it.email, "Mel by ses nad sebou zamyslet!")
        }
        return EgoIncrease.BIG
    }

}

enum class EgoIncrease {
    SMALL, BIG
}

interface AbstractAeviManager {
    fun behaviour(): EgoIncrease
}

@Entity
class Developer(
    @Id var id: Long? = null,
    val email: String)

@Repository
interface DeveloperRepository : JpaRepository<Developer, Long>

interface MailService {
    fun send(email: String, message: String)
}