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 * regarding copyright ownership.  The ASF licenses this file   *
 * to you under the Apache License, Version 2.0 (the            *
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package org.apache.james.jmap.api.filtering.impl;

import java.util.List;

import org.apache.james.eventsourcing.CommandHandler;
import org.apache.james.eventsourcing.Event;
import org.apache.james.eventsourcing.eventstore.EventStore;
import org.reactivestreams.Publisher;

import reactor.core.publisher.Mono;

public class DefineRulesCommandHandler implements CommandHandler<DefineRulesCommand> {

    private final EventStore eventStore;

    public DefineRulesCommandHandler(EventStore eventStore) {
        this.eventStore = eventStore;
    }

    @Override
    public Class<DefineRulesCommand> handledClass() {
        return DefineRulesCommand.class;
    }

    @Override
    public Publisher<List<? extends Event>> handle(DefineRulesCommand storeCommand) {
        FilteringAggregateId aggregateId = new FilteringAggregateId(storeCommand.getUsername());

        return Mono.from(eventStore.getEventsOfAggregate(aggregateId))
            .map(history -> FilteringAggregate.load(aggregateId, history).defineRules(storeCommand));
    }

}
