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package com.clouway.kcqrs.testing

import com.clouway.kcqrs.core.Event
import com.clouway.kcqrs.core.EventStore
import java.util.*

/**
 * @author Miroslav Genov ([email protected])
 */
class InMemoryEventStore : EventStore {
    private val idToEvents = mutableMapOf>()

    override fun saveEvents(aggregateId: UUID, expectedVersion: Int, events: Iterable) {
        if (!idToEvents.contains(aggregateId)) {
            idToEvents[aggregateId] = mutableListOf()
        }
        idToEvents[aggregateId]!!.addAll(events)
    }

    override fun  getEvents(aggregateId: UUID, aggregateType: Class): Iterable {
        if (!idToEvents.containsKey(aggregateId)) {
            return listOf()
        }
        return idToEvents[aggregateId]!!
    }

    override fun revertEvents(aggregateId: UUID, events: Iterable) {
        val newEvents = idToEvents[aggregateId]!!.filter { !events.contains(it) }.toMutableList()
        idToEvents[aggregateId] = newEvents
    }

}