/**
 * VendingMachine simulates a campus vending machine.
 * 
 * @author Chuck Bates 
 * @version 1.1 final
 */


public class VendingMachine
{
   private int drinks = 10; // sets machine to have 10 drinks at creation  
   private int price = 125; // sets default price to 125
   private int credit = 0;  // sets credit to 0 as no money has yet been inserted
   int due = 0;
   	/**
     * Constructor for objects of 
	 * class VendingMachine
     */
	 
	 public VendingMachine()
    {
		
    }
	
	
     public VendingMachine(int cost)
     {
         if(cost > 0){      // if the number set is positive then the price is the users input
			 price = cost;
		 }else{             // if user sets a negative amount the cost is set at 125
             price = 125;
		 }
	 }
     

    /**
     * displayGreeting displays a brief welcome and warns customer 
     * if the vending machine is empty
     */
     public void displayGreeting()
    {
        System.out.println(" Thank you for using this machine ");
        System.out.println(" The price is " + price );
        if(drinks == 0){
            System.out.println(" I am sorry, the machine is currently empty ");
            credit = 0;
        }else{
            return;
        }	//end of if statement
    }	//end of displayGreeting
    
    /**
     * getPrice returns the price of one drink
     */
     public int getPrice()
    {       
        return price;
    }	//end getPrice method
    /**
     * get credit returns how much money if any the user has inserted
     *
     *  public int getCredit()
     *  {
     *       return credit;
     *   } 
     */  
    
    /**
     * insertMoney adds the number of cents to the credit balance. 
     * and tells the customer to make a selection when they have 
     * inserted enough money
     */
     public void insertMoney(int amount){
     
         if(drinks < 1){// if machine is empty tells user
             System.out.println(" Sorry the machine is currently empty ");
             amount = 0;
         }
         if(amount < 0 ){// if user puts in a negative amount, tells customer to enter money
             System.out.println("you put in " + amount + "  You need to put money in!");
             amount = 0;
         }	// 	if user puts has a credit higher than the price the user
		 	//  is asked to make a selection if user puts in a positive 
		 	//	amount under the price this is displayed
         credit = amount + credit; 
         if(credit >= price){ 
             System.out.println(" please make selection ");
         }else{ // 
             System.out.println(" you have a " + credit + " credit, the price is " + price );
         }
              } // ends insert money      
	 
     /**
     * makeSelection dispenses a drink
     */
     public void makeSelection()
     {
         if(credit >= price){
             System.out.println(" enjoy your ice cold drink! ");
             credit = 0;
             drinks = drinks -1;
         }else{
             System.out.println("credit " + credit + "  price " + price);
             due = price - credit;
             System.out.println(" you need to insert " + due);
         }
         
     }	//end of makeSelection method
     
     /**
      * this method restocks the machine
      */
      public void reStock()
      {
          drinks = 10;
          
      }	//ends restock method
	  
      /**
       * getStock tells the user how many drinks are left in the machine
       */
	   
       public int getStock()
       {
           return drinks;
       }
       /**
        *  output per project document
        * 
        *  Thank you for using this machine 
        *  The price is 125
        *  you have a 100 credit, the price is 125
        *  please make selection 
        *  cangrats dude, you can now do the dew!
        *  you put in -25  You need to put money in!
        *  you have a 0 credit, the price is 125
        */
} // end of class