/****************************************************************
 * Licensed to the Apache Software Foundation (ASF) under one   *
 * or more contributor license agreements.  See the NOTICE file *
 * distributed with this work for additional information        *
 * regarding copyright ownership.  The ASF licenses this file   *
 * to you under the Apache License, Version 2.0 (the            *
 * "License"); you may not use this file except in compliance   *
 * with the License.  You may obtain a copy of the License at   *
 *                                                              *
 *   http://www.apache.org/licenses/LICENSE-2.0                 *
 *                                                              *
 * Unless required by applicable law or agreed to in writing,   *
 * software distributed under the License is distributed on an  *
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
 * KIND, either express or implied.  See the License for the    *
 * specific language governing permissions and limitations      *
 * under the License.                                           *
 ****************************************************************/

package org.apache.james.imap.processor;

import java.util.List;

import javax.inject.Inject;

import org.apache.james.imap.api.ImapConstants;
import org.apache.james.imap.api.message.Capability;
import org.apache.james.imap.api.message.IdRange;
import org.apache.james.imap.api.message.response.StatusResponseFactory;
import org.apache.james.imap.api.process.ImapSession;
import org.apache.james.imap.api.process.SelectedMailbox;
import org.apache.james.imap.message.request.MoveRequest;
import org.apache.james.mailbox.MailboxManager;
import org.apache.james.mailbox.MailboxSession;
import org.apache.james.mailbox.model.MailboxId;
import org.apache.james.mailbox.model.MessageRange;
import org.apache.james.metrics.api.MetricFactory;
import org.apache.james.util.MDCBuilder;

import com.google.common.collect.ImmutableList;

import reactor.core.publisher.Flux;

public class MoveProcessor extends AbstractMessageRangeProcessor<MoveRequest> implements CapabilityImplementingProcessor {

    private final boolean moveCapabilitySupported;

    @Inject
    public MoveProcessor(MailboxManager mailboxManager, StatusResponseFactory factory,
                         MetricFactory metricFactory) {
        super(MoveRequest.class, mailboxManager, factory, metricFactory);
        moveCapabilitySupported = mailboxManager.hasCapability(MailboxManager.MailboxCapabilities.Move);
    }

    @Override
    protected Flux<MessageRange> process(MailboxId targetMailbox, SelectedMailbox currentMailbox,
                                         MailboxSession mailboxSession, MessageRange messageSet) {
        return Flux.from(getMailboxManager().moveMessagesReactive(messageSet, currentMailbox.getMailboxId(), targetMailbox, mailboxSession));
    }

    @Override
    protected String getOperationName() {
        return "Move";
    }

    @Override
    public List<Capability> getImplementedCapabilities(ImapSession session) {
        if (moveCapabilitySupported) {
            return ImmutableList.of(ImapConstants.SUPPORTS_MOVE);
        } else {
            return ImmutableList.of();
        }
    }

    @Override
    protected MDCBuilder mdc(MoveRequest request) {
        return MDCBuilder.create()
            .addToContext(MDCBuilder.ACTION, "MOVE")
            .addToContext("targetMailbox", request.getMailboxName())
            .addToContext("uidEnabled", Boolean.toString(request.isUseUids()))
            .addToContext("idSet", IdRange.toString(request.getIdSet()));
    }

}
