/*
 * Copyright (c) 2013 The Android Open Source Project
 *
 * 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.android.ims.internal;

import java.util.ArrayList;

/**
 * Manages CallGroup objects.
 *
 * @hide
 */
public class CallGroupManager {
    private static CallGroupManager mCallGroupManager = new CallGroupManager();
    private Object mLockObj = new Object();
    private ArrayList<CallGroup> mCallGroups = new ArrayList<CallGroup>();

    private CallGroupManager() {
    }

    public static CallGroupManager getInstance() {
        return mCallGroupManager;
    }

    public CallGroup createCallGroup(ICallGroup callGroup) {
        CallGroup cg = new CallGroup(callGroup);

        synchronized(mLockObj) {
            mCallGroups.add(cg);
        }

        return cg;
    }

    public void destroyCallGroup(CallGroup cg) {
        if (cg == null) {
            return;
        }

        synchronized(mLockObj) {
            mCallGroups.remove(cg);
        }
    }

    public CallGroup getCallGroupAsOwner(ICall call) {
        synchronized(mLockObj) {
            for (CallGroup cg : mCallGroups) {
                if (cg.isOwner(call)) {
                    return cg;
                }
            }
        }

        return null;
    }

    public CallGroup getCallGroupAsReferrer(ICall call) {
        synchronized(mLockObj) {
            for (CallGroup cg : mCallGroups) {
                if (cg.isReferrer(call)) {
                    return cg;
                }
            }
        }

        return null;
    }
}