/*
 * The MIT License (MIT)
 * 
 * Copyright (c) 2015 Camil Staps <info@camilstaps.nl>
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.camilstaps.bar;

import java.util.ArrayList;
import java.util.List;

/**
 * A bar
 * @author Camil Staps, s4498062
 */
public class Bar {

    private final Tap tap;
    private final List<Glass> glasses;
    private final List<ParchedMan> drinkers;
    
    /**
     * Create a new Bar. Under the hood, a new Tap is created as well.
     * @param numberOfGlasses the number of glasses in the bar
     */
    public Bar (int numberOfGlasses) {
        tap = new Tap();
        glasses = new ArrayList<>();
        for (int i = 0; i < numberOfGlasses; i++) {
            glasses.add(new Glass());
        }
        drinkers = new ArrayList<>();
    }
    
    /**
     * Get a glass from the bar
     * @return Glass if there is one available, null otherwise
     */
    public synchronized Glass getGlass() {
        if (glasses.isEmpty())
            return null;
        return glasses.remove(0);
    }
    
    /**
     * Put a glass back
     * @param glass 
     */
    public void putGlass(Glass glass) {
        glasses.add(glass);
    }
    
    /**
     * Add some number of drinkers
     * @param number 
     */
    public void addDrinkers(int number) {
        for (int i = 0; i < number; i++) {
            drinkers.add(new ParchedMan(i, this, tap));
        }
    }
    
    /**
     * Open the bar
     */
    public void startDrinking() {
        for (ParchedMan man : drinkers) {
            (new Thread(man)).start();
        }
    }
    
}