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/*
 * Copyright (c) 2017, Virgil Security, Inc.
 *
 * All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * * Neither the name of virgil nor the names of its
 *   contributors may be used to endorse or promote products derived from
 *   this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.virgilsecurity.sdk.securechat.impl;

import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import com.virgilsecurity.sdk.securechat.UserDataStorage;

/**
 * @author Andrii Iakovenko
 *
 */
public class DefaultUserDataStorage implements UserDataStorage {

    private Map> defaults;

    /**
     * Create new instance of {@link DefaultUserDataStorage}.
     */
    public DefaultUserDataStorage() {
        defaults = Collections.synchronizedMap(new HashMap>());
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.virgilsecurity.sdk.securechat.UserDataStorage#getAllData(java.lang.String)
     */
    @Override
    public Map getAllData(String storageName) {
        if (defaults.containsKey(storageName)) {
            return defaults.get(storageName);
        }
        Map data = Collections.synchronizedMap(new HashMap());
        defaults.put(storageName, data);
        return data;
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.virgilsecurity.sdk.securechat.UserDataStorage#getData(java.lang.String, java.lang.String)
     */
    @Override
    public String getData(String storageName, String key) {
        return getAllData(storageName).get(key);
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.virgilsecurity.sdk.securechat.UserDataStorage#addData(java.lang.String, java.lang.String,
     * java.lang.String)
     */
    @Override
    public void addData(String storageName, String key, String value) {
        getAllData(storageName).put(key, value);
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.virgilsecurity.sdk.securechat.UserDataStorage#removeData(java.lang.String, java.lang.String)
     */
    @Override
    public void removeData(String storageName, String key) {
        getAllData(storageName).remove(key);
    }

    /* (non-Javadoc)
     * @see com.virgilsecurity.sdk.securechat.UserDataStorage#synchronize()
     */
    @Override
    public void synchronize() {
        // TODO Auto-generated method stub        
    }

}