Clean insert user

insertUser.kt

// function createUser(user) {
//     user.password = bcryptPassword(user.password)
//     const userSaved = db.insert(user);
//     generateConfirmationEmail(user)
// }
//
//
// function generateConfirmationEmail(user) {
//     const key = `${md5(user.email)}.${Random.UUID()}`
//         db.insertEmailConfirmation(user, key)
//     email.sendConfirmation(userSaved.email);
// }

data class User(
    val name: String,
    val email: String,
    val password: String
)

class FailSendingEmail : Exception()
class FailInsertingUser : Exception()

class Encryptor {
    suspend fun encrypt(str: String): String { TODO() }
}

class Emailer {
    suspend fun email(content: String, email: String) { TODO() }
}

class DBClient {
    suspend fun <T> insert(obj: T) { TODO() }
}

interface UserRepository {
    suspend fun sendConfirmationEmail(user: User)
    suspend fun insertUser(user: User)
}

class CreateUserUseCase(
    private val userRepository: UserRepository,
    private val encryptor: Encryptor
) {

    suspend fun invoke(name: String, email: String, password: String) {
        val user = User(name, email, encryptor.encrypt(password))

        try {
            userRepository.insertUser(user)
            userRepository.sendConfirmationEmail(user)
        } catch (fse: FailSendingEmail) {
            TODO("handle failure sending email")
        } catch (fiu: FailInsertingUser) {
            TODO("handle failure inserting user")
        }
    }
}