/**
 * A utility class that can be used to calculate sales
 * taxes on a collection of items
 *
 *
 * This work complies with the JMU Honor Code.
 *
 * @author  Your Name
 * @version 1.0
 */
public class TaxCalculator
{
    public static int NON_FOOD        = 0;
    public static int FOOD            = 1;
    public static int PREPARED_FOOD   = 2;
    

    /**
     * Calculate the tax on the (non-prepared) food items
     *
     * @param prices      The prices of all items purchases
     * @param categories  The corresponding categories of all items purchases
     * @return            The tax
     */
    
	 public static double foodTax(double[] prices, int[] categories)
    {
       double tax = 0.0;
       
   	 // Accumulates the tax on all of the food items
		 for (int i = 0; i < prices.length; i ++)
		 {
		 	if (categories[i] == 1)
			{	     
		 		tax += StateTaxes.foodTax(prices[i]);
			}
    	 }   
		 return tax;       
    }


    /**
     * Calculate the tax on the non-food items
     *
     * @param prices      The prices of all items purchases
     * @param categories  The corresponding categories of all items purchases
     * @return            The tax
     */
    
	 public static double nonfoodTax(double[] prices, int[] categories)
    {
       double tax = 0.0;
       
		 // Accumulates the tax on all of the non-food items
		 for (int i = 0; i < prices.length; i ++)
		 {
		 	if (categories[i] == 0)
			{	     
		 		tax += StateTaxes.salesTax(prices[i]);
			}
    	 } 
   	
       
		 return tax;       
    }
    


    /**
     * Calculate the tax on the prepared food items
     *
     * @param prices      The prices of all items purchases
     * @param categories  The corresponding categories of all items purchases
     * @return            The tax
     */
    
	 public static double preparedfoodTax(double[] prices, int[] categories)
    {
       double tax = 0.0;
       
		 // Accumulates the tax on all of the prepared food items
		 for (int i = 0; i < prices.length; i ++)
		 {
		 	if (categories[i] == 2)
			{	     
		 		tax += LocalTaxes.preparedFoodTax(prices[i]);
			}
    	 } 
       
       
		 return tax;       
    }



    /**
     * Calculate the total value of all items purchased in
     * particular category
     *
     * @param prices      The prices of all items purchases
     * @param categories  The corresponding categories of all items purchases
     * @param categoryToInclude  The category of interest
     * @return            The total value of items in the given category
     */
    
	 public static double total(double[] prices, int[] categories, 
                                int categoryToInclude)
    {
       double     total;
       
       if (categoryToInclude == 0)
		 {
		 	total = prices[0];
		 }
		 else if (categoryToInclude == 1)
		 {
		 	total = prices[1];
		 }
		 else if (categoryToInclude == 2)
		 {
		 	total = prices[2];
		 }
		 else
		 {
		 	total = 0.00;
		 }
       

       return total;       
    }
    
    
    /**
     * Determine if the given category is valid
     *
     * @param category   The category of interest
     * @return           true if the category is valid; false otherwise
     */
    
	 public static boolean isValid(int category)
    {
       boolean     result;
       
		 // Categories must fall between 0 and 2
       if (category > 2 || category < 0)
		 {
		 	result = false;
		 }
		 else
		 {
		 	result = true;
		 }
       
       return result;       
    }
    
}