/*
 * Name: Sam Conroy
 * Date: 9/20/2019
 * Course Number: CSC - 220
 * Course Name: Data Structures
 * Problem Number: Homework 3
 * Email: srconroy0001@student.stcc.edu
 * Short Description of the Problem Star Data problem.
 */

import java.io.File;
import java.util.Arrays;
import java.util.Scanner;

public class starData {
	final static String TITLE = "Star Data";
	final static String CONTINUE_PROMPT = "Do this again? [y/N] ";
	private static int [][] arr;
	//**********************************************
	private static void readStarData(Scanner sc) {
		 //This method simply reads in the data from a file specified by the user
		 try {
		      System.out.print("Enter Filename: ");
		      String filename = sc.nextLine();
		      Scanner fileInput = new Scanner(new File(filename));

		      int i = fileInput.nextInt();
		      int j = fileInput.nextInt();

		      arr = new int[i][j];

		      for (int x = 0; x < i; x++) {
		    	  for (int y = 0; y < j; y++)
		    	  arr[x][y] = fileInput.nextInt();
		      }

		      fileInput.close();
		    }

		    catch (Exception ex) {
		    	System.out.println("Something bad happened!!!!!!!!!!!!");
		    }

		  }

	//**********************************************
	 private static int getSurroundingSum(int i, int j) {
		 // this method gets the sum of the surrounding numbers
		 // it then divides the sum by 5 and returns a boolean indicating whether or not it is a star
		 int isStar = 0;

		 for (int x = i - 1; x < i + 2; x++)
			 for (int y = j - 1; y < j + 2; y++)
				 isStar += arr[x][y];

		 return isStar;
			 }

	//**********************************************
	 public static char[][] analyzeStarData(){
		//this method inevitably determines where there is a star and where there is not
		//then returns a character array contain this information and ready to be printed out
		 char [][] stardata = new char [arr.length][arr[0].length];

		 for(int i = 0; i < arr.length; i++ )
			 for(int j = 0; j < arr[0].length; j++) {
				 if(arr[i][j] > 0) {
					 double star = getSurroundingSum( i, j);
					 if (star / 5 > 6.0)
						 stardata[i][j] = '*';

					 else
						 stardata[i][j] = ' ';
				 }
				 else
					 stardata[i][j] = ' ';
			 }
		 return stardata;

	 }

	//**********************************************
	private static void printStarData(char[][]starData) {
		//this method will print the character array that was formed in previous methods

		for(int i = 0; i < starData.length; i++) {
			System.out.println();
			for(int a = 0; a < starData[0].length; a++) {
				System.out.print("+---");
			}

			System.out.print("+");
			System.out.print("\n| ");
			for(int j = 0;j < starData[0].length; j++) {
				System.out.print(starData[i][j] + " | ");

			}
		}
	}
	//**********************************************

	private static void process(Scanner sc, String args[]) {

		readStarData(sc);
		char[][] starData = new char [arr[0].length][arr.length];
		System.out.println("Analyzing star data ...");
		starData = analyzeStarData();
		printStarData(starData);

	}

	//**********************************************

	private static boolean doThisAgain(Scanner sc, String prompt) {
		System.out.print("\n" + prompt);
		String doOver = sc.nextLine();
		return doOver.trim().equalsIgnoreCase("Y");
	}

	//**********************************************

	public static void main(String args[]) {
		System.out.println("Welcome to " + TITLE);
		Scanner sc = new Scanner(System.in);
		do {
			process(sc, args);
		} while (doThisAgain(sc, CONTINUE_PROMPT));
		sc.close();
		System.out.println("Thank you for using " + TITLE);
	}

}