/*
 * Copyright (c) 2008-2012, Hazel Bilisim Ltd. All Rights Reserved.
 *
 * Licensed 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 com.hazelcast.cluster;

import com.hazelcast.impl.MemberImpl;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;

public class MembersUpdateCall extends AbstractRemotelyCallable<Boolean> {

    private static final long serialVersionUID = -2311579721761844861L;

    private Collection<MemberInfo> memberInfos;

    private long masterTime = System.currentTimeMillis();

    public MembersUpdateCall() {
        memberInfos = new ArrayList<MemberInfo>();
    }

    public MembersUpdateCall(Collection<MemberImpl> lsMembers, long masterTime) {
        this.masterTime = masterTime;
        memberInfos = new ArrayList<MemberInfo>(lsMembers.size());
        for (MemberImpl member : lsMembers) {
            memberInfos.add(new MemberInfo(member.getAddress(), member.getNodeType(), member.getUuid()));
        }
    }

    public Boolean call() {
        node.getClusterImpl().setMasterTime(masterTime);
        node.clusterManager.updateMembers(getMemberInfos());
        return Boolean.TRUE;
    }

    public void addMemberInfo(MemberInfo memberInfo) {
        if (!memberInfos.contains(memberInfo)) {
            memberInfos.add(memberInfo);
        }
    }

    @Override
    public void readData(DataInput in) throws IOException {
        masterTime = in.readLong();
        int size = in.readInt();
        memberInfos = new ArrayList<MemberInfo>(size);
        while (size-- > 0) {
            MemberInfo memberInfo = new MemberInfo();
            memberInfo.readData(in);
            memberInfos.add(memberInfo);
        }
    }

    @Override
    public void writeData(DataOutput out) throws IOException {
        out.writeLong(masterTime);
        out.writeInt(memberInfos.size());
        for (MemberInfo memberInfo : memberInfos) {
            memberInfo.writeData(out);
        }
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder("MembersUpdateCall {\n");
        for (MemberInfo address : memberInfos) {
            sb.append(address).append('\n');
        }
        sb.append('}');
        return sb.toString();
    }

    /**
     * @return the lsMemberInfos
     */
    public Collection<MemberInfo> getMemberInfos() {
        return Collections.unmodifiableCollection(memberInfos);
    }
}