37 lines
1.2 KiB
Kotlin
37 lines
1.2 KiB
Kotlin
package eventDemo.business.command.action
|
|
|
|
import eventDemo.business.command.CommandException
|
|
import eventDemo.business.command.command.IWantToPlayCardCommand
|
|
import eventDemo.business.event.event.CardIsPlayedEvent
|
|
import eventDemo.business.event.projection.GameStateRepository
|
|
|
|
/**
|
|
* A command to perform an action to play a new card
|
|
*/
|
|
data class IWantToPlayCard(
|
|
private val gameStateRepository: GameStateRepository,
|
|
) : CommandAction<IWantToPlayCardCommand, CardIsPlayedEvent> {
|
|
override fun run(command: IWantToPlayCardCommand): (version: Int) -> CardIsPlayedEvent {
|
|
val state = gameStateRepository.get(command.payload.aggregateId)
|
|
|
|
if (!state.isStarted) {
|
|
throw CommandException("The game is Not started")
|
|
}
|
|
if (state.currentPlayerTurn != command.payload.player) {
|
|
throw CommandException("Its not your turn!")
|
|
}
|
|
if (!state.canBePlayThisCard(command.payload.player, command.payload.card)) {
|
|
throw CommandException("You cannot play this card")
|
|
}
|
|
|
|
return { version ->
|
|
CardIsPlayedEvent(
|
|
aggregateId = command.payload.aggregateId,
|
|
card = command.payload.card,
|
|
player = command.payload.player,
|
|
version = version,
|
|
)
|
|
}
|
|
}
|
|
}
|