package pretzelpalace;

/*
 * PretzelStore.java
 *
 * Created on April 9, 2002, 11:43 PM
 */
//import javax.swing.*;
/**
 *
 * @author  mike
 * @version 
 */
public class PretzelStore {

    private int inventory = 0;             // current inventory
    private int numSold = 0;
    private double salePrice = 0.50;
    private double profitMargin = .25;
    
    private static final int BATCHSIZE = 12;
    
    /** 
     * Creates default new PretzelStore 
     */
    public PretzelStore() {
    }

    /** 
     * Creates new PretzelStore - with non defaults
     */
    public PretzelStore(int inv, double price, double profit) {
        inventory = inv;
        salePrice = price;
        profitMargin = profit;
        numSold = 0;
    }
        
    /**
     * report current inventory
     */
    //############# STUDENT CODE HERE #####################
    
    /**
     * report number sold so far
     */
    //############# STUDENT CODE HERE #####################
    
    /**
     * report number of pretzels that have ever been in the store
     */
    public int getStart() {
        int pretzels = inventory + numSold;
        return pretzels;
    }
    
    /**
     * report price for each pretzel sold 
     */
    public double getSalePrice() {
        return salePrice;
    }
    
    /**
     * report amount of profit per pretzel
     */
    public double getMargin() {
        return profitMargin;
    }
    
    /**
     * report total profit for the day
     */
    public double getTotalProfit() {
        double profit = profitMargin * numSold;
        return profit;
    }
    
    
    /**
     * report total sales for the day
     */
    //############# STUDENT CODE HERE #####################
    
    
    
    /**
     * report total inventory value
     */
    public double getTotalInventoryValue() {
        double value = inventory * salePrice;
        return value;
    }
    
    
    /**
     * Change current inventory levels 
     * Probably should not be allowed to be called directly
     * So made private !!!
     * Checks to ensure don't take inventory negative
     * returns boolean indicating whether successful
     */
    private boolean setCurrInv(int num) {
        // don't allow negative inventory
        if (num >= 0) {
            inventory = num;
            return true;
        }
        else {
            //JOptionPane.showMessageDialog(null,"ERROR - Inventory remains unchanged after attempt to set to negative");
            return false;
        }
    }
    
    /**
     * increase current inventory levels by ordering a new batch of pretzels
     * Pretzels come in batches of 12
     * Assume they arrive immediately 
     * Checks to ensure don't order negative batches
     * returns boolean indicating whether successful
     */
    public boolean orderNewBatch (int numBatches) {
        // don't allow negative batches
        if (numBatches >= 0) {
            // add to inventory - 12 pretzels per batch
            inventory += numBatches * BATCHSIZE;
            return true;
        }
        else { 
            return false;
        }
    }
    
    /**
     * Change number sold
     * Probably should not be allowed to be called directly
     * User programmers (clients) must go through sell method
     * So made private !!!
     * Checks to ensure don't take num sold negative
     * returns boolean indicating whether successful
     */
    private void setSold(int num) {
        // don't allow negative number sold
        if (num >= 0) {
            numSold = num;
        }
        else {
            //JOptionPane.showMessageDialog(null,"Number sold remains unchanged after attempt to set to negative");
        }
    }
    
    /**
     * Change profit margin 
     * Checks to ensure don't take margin negative
     * returns boolean indicating whether successful
     */
    public boolean setMargin(double amt) {
        // don't allow negative profit margin
        if (amt >= 0) {
            profitMargin = amt;
            return true;
        }
        else {
            //JOptionPane.showMessageDialog(null,"Profit margin remains unchanged after attempt to set to negative");
            return false;
        }
    }
    
    /**
     * Sell given number of pretzels - reflecting in instance variables
     * First ensure that that many are available
     * returns boolean indicating whether successful
     */
    public boolean sell(int num) {
        // don't allow negative sale
        if (num <= 0) {
            //JOptionPane.showMessageDialog(null,"No Pretzels sold due to attempt to sell negative number of pretzels");
            return false; // couldn't sell
        }
        // dont allow selling more than we have
        else if (num > inventory) {
            //JOptionPane.showMessageDialog(null,"No Pretzels sold due to attempt to sell more pretzels than are available");
            return false; // couldn't sell
        }
        else {
            // sell them
            inventory = inventory - num;
            numSold = numSold + num;
            return true;
        }
            
    }
    
    /** 
     * dummy driver - not currnetly doing anything
     */
    public static void main(String args[]) {
        PretzelStore myStore = new PretzelStore();
        //System.out.println(myStore.getCurrInv());
        int x;
        System.exit(0);
    }
    
}