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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.dlp.eventsourcing.commands;

import java.util.List;

import org.apache.james.dlp.eventsourcing.aggregates.DLPAggregateId;
import org.apache.james.dlp.eventsourcing.aggregates.DLPDomainConfiguration;
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 ClearCommandHandler implements CommandHandler<ClearCommand> {

    private final EventStore eventStore;

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

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

    @Override
    public Publisher<List<? extends Event>> handle(ClearCommand clearCommand) {
        DLPAggregateId aggregateId = new DLPAggregateId(clearCommand.getDomain());

        return Mono.from(eventStore.getEventsOfAggregate(aggregateId))
            .map(history -> DLPDomainConfiguration.load(aggregateId, history).clear());
    }
}
