40 lines
1019 B
Kotlin
40 lines
1019 B
Kotlin
package eventDemo.contexts.auth.domain
|
|
|
|
import eventDemo.contexts.auth.domain.events.NewUserCreatedEvent
|
|
import eventDemo.contexts.auth.domain.events.UserEvent
|
|
import eventDemo.sharedKernel.UserId
|
|
import kotlinx.serialization.Serializable
|
|
|
|
@Serializable
|
|
data class User(
|
|
val id: UserId,
|
|
val username: String,
|
|
val password: String,
|
|
val version: Int,
|
|
val recordedEvents: Set<UserEvent>,
|
|
) {
|
|
companion object {
|
|
fun createNewUser(
|
|
username: String,
|
|
password: String,
|
|
): User =
|
|
apply(NewUserCreatedEvent(username, password, version = 1))
|
|
|
|
fun apply(event: NewUserCreatedEvent): User =
|
|
User(
|
|
id = event.aggregateId,
|
|
username = event.username,
|
|
password = event.password,
|
|
version = event.version,
|
|
recordedEvents = setOf(event),
|
|
)
|
|
|
|
fun loadFromHistory(events: Set<UserEvent>): User? =
|
|
events.fold(null as User?) { acc, event ->
|
|
when (event) {
|
|
is NewUserCreatedEvent -> apply(event)
|
|
}
|
|
}
|
|
}
|
|
}
|