/*
 * Copyright (c) 2018, 7u83 <7u83@mail.ru>
 * 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.
 *
 * 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 opensesim.world;

import java.util.Collection;

import opensesim.util.scheduler.EventListener;

/**
 * The interface to the world. Used by traders. And others.
 * @author 7u83 <7u83@mail.ru>
 */
public interface World {

    /**
     * Get available assets in this world.
     * @return Collection of {@link opensesim.world.Asset}s
     */
    public Collection<AbstractAsset> getAssetCollection();

    /**
     * Return asset by symbol
     * @param symbol symbol to find
     * @return asset
     */
    public AbstractAsset getAssetBySymbol(String symbol);

    Collection<Exchange> getExchangeCollection();
    
    public Exchange getDefaultExchange();
    public AssetPair getDefaultAssetPair();
    public AbstractAsset getDefaultCurrency();
    
    Collection<Trader> getTradersCollection();

    public void schedule(EventListener listener, long t);

    public float randNextFloat(float min, float max);
    
    public long currentTimeMillis();
    
    public AssetPair getAssetPair(AbstractAsset asset, AbstractAsset currency);
}