/**
 * Author: Connor Vaughn
 * Date: 10/1/19
 * Purpose: Determine Animal Population Using Given Trials
 */
import java.io.IOException;
import java.io.PrintWriter;
import java.io.File;
import java.util.Scanner;
import java.util.Random;
public class AnimalPopulation
{
    public static void main(String [] args) throws IOException
    {
        //Declare objects
        Scanner in = new Scanner(System.in);
        PrintWriter outFile = new PrintWriter(new File("dataCollection.txt"));
        File dataCollection = new File("dataCollection.txt");
        Scanner inFile = new Scanner(dataCollection);
        Random rand = new Random ();

        //Declare variables
        boolean reLoop = true;
        int numTrials = 0;
        int randomInt = 0;
        int readInt = 0;
        int totalsquirrell = 0;
        double average = 0;
        String readLine = "";


        //User input
        System.out.println("Welcome to the Fox Squirrel Simulator");
        while (reLoop)
        {
            System.out.println();
            System.out.println("How many trials should be simulated?");
            System.out.print("Enter a value greater than 1000: ");
            numTrials = in.nextInt();

            if(numTrials > 1000)
            {
                reLoop = false;
            }
            else
            {
                System.out.println();
                System.out.println(" Please try again. Enter a number greater than 1000.");
            }
        }
        System.out.println();
        System.out.println("simulating trials now... one moment please...");
        System.out.println();

        //Write to file
        for (int trial = 0; trial < numTrials; trial++)
        {
            randomInt = 0;
            for(int fishBefore = 0; randomInt != 15; fishBefore++)
            {
                randomInt = rand.nextInt(16);
                if (randomInt == 15)
                {
                    outFile.println(fishBefore);
                }
                else
                {
                    ;
                }
            }
        }
        outFile.close();

        //Read file
        while(inFile.hasNextLine())
        {
            readLine = inFile.nextLine();
            readInt = Integer.parseInt(readLine);
            totalsquirrell += readInt;
        }
        inFile.close();

        //Compute average
        average = (double)totalsquirrell / (double)numTrials;

        //Display results
        System.out.println("The results!");
        System.out.println("The average number of squirrels observed until spotting");
        System.out.println("a Fox Squirrel at the city park is: " + average);
    }