import java.io.*;
import java.util.*;

public class Showcase extends Prize {
	public static final String FILE_NAME = "./prizeList.txt";
	public static final String DELIM = "\t";
	public static final int PRIZE_COUNT = 50;
	public static final int MAX_PRIZE_COUNT = 5;
	public static final int FIELD_AMT = 2;
	//Instance variable
	private Prize[] prizeList;
	//Default constructor, sets the array to the appropriate size and reads the specified file
	public Showcase()
	{
		readFile(FILE_NAME);
	}
	//Method to select 5 random prizes from the list
	public Prize[] choosePrizes()
	{
		Random r = new Random();
		Prize[] chosen = new Prize[MAX_PRIZE_COUNT];
		for (int i = 0; i < MAX_PRIZE_COUNT; i++)
		{
			int rando = r.nextInt(PRIZE_COUNT) % 50;
			chosen[i] = prizeList[rando];
		}
		return chosen;
	}
	//Reading the file of prizes.
	public static Prize[] readFile(String fileName)
	{
		try
		{
			Scanner fileScanner = new Scanner(new File(fileName));
			//Counts the number of prizes
			int count = 0;
			while(fileScanner.hasNextLine())
			{
			     count++;
			     fileScanner.nextLine();
			}
			String fileLine;
			String[] splitLines;
			Prize[] readPrize = new Prize[count];
			//Reset the Scanner
			fileScanner = new Scanner(new File(fileName));
			//Reads the prizes
			int prizeCount = 0;
			while(fileScanner.hasNext())
			{
			     fileLine = fileScanner.nextLine();
			     splitLines = fileLine.split(DELIM);
			     if(splitLines.length == FIELD_AMT)
			     {
			    	 String name = splitLines[0];
			    	 int price = Integer.parseInt(splitLines[1]);
			         readPrize[prizeCount] = new Prize(name, price);
			         prizeCount++;
			     }
			}
			fileScanner.close();
			return readPrize;
		}
		catch(IOException e)
		{
			System.out.println(e);
		}
		catch(Exception e)
		{
			System.out.println(e);
		}
		return null;
	}
}