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

import javax.swing.JFileChooser;
import javax.swing.JOptionPane;

public class Hw11P01 {
	static Scanner input = new Scanner(System.in);

	public static void main(String[] args)
	{
		int number = 0, grabInt = 0, grabChoice = 0;

		int integer = userMenu(number);
		menuChoices(integer);
		}


	public static int userMenu(int number)
	{

		System.out.println("Option 1: Randomly Generate a 2D array");
		System.out.println("Option 2: Populate an array using File I/O");
		System.out.println("Option 3: Exit program");
		System.out.print("Enter your choice here: ");

		number = input.nextInt();
		return number;
	}
	public static void menuChoices(int integer)
	{
		switch(integer)
		{
			case 1:
				int[][] array = creatingRandomArray();
				printingRandomArray(array);

				break;

			case 2:
    				//asking user to choose a file
    				JOptionPane.showMessageDialog(null, "Choose a file to calculate from");

    				//creating jfc as a variable
    				JFileChooser jfc = new JFileChooser();

    				//creating the array and counter variables

    				int counter = 0;
    				int x = jfc.showOpenDialog(null);
    				int sizeRow = 0, sizeColumn = 0;

    				//if user approves the file
    				if(x == JFileChooser.APPROVE_OPTION)
    				{
    					//allowing for jfc to pick a file
    					File newFile = jfc.getSelectedFile();

    					try
    					{
    						Scanner in = new Scanner(newFile);
    						//making the program grab data from the selected file
    						sizeRow = Integer.parseInt(in.nextLine());
    						sizeColumn = Integer.parseInt(in.nextLine());

    						float sumOfArray = 0, sumOfMajor = 0, sumOfMinor = 0;
    						double averageOfMinor = 0, averageOfArray = 0, averageOfMajor = 0;
    						int array1[][] = new int[sizeRow][sizeColumn];

    						//creating the loop to enter all the data while updating counter
    						while(in.hasNext())
    						{
    							for(int row = 0; row < sizeRow; row++)
    							{
    								for(int column  = 0; column < sizeColumn; column++)
    								{
    										//adding spaces in between the numbers
    										array1[row][column] = Integer.parseInt(in.nextLine());

    										sumOfArray += array1[row][column];



    										//insert the methods that solve the problem in this loop
    								}
    								sumOfMajor += array1[row][row];
    							}
    							for(int row = sizeRow - 1; row != 0; row--)
    							{
    							sumOfMinor += array1[row][row];
    							}
    						}
    						averageOfArray = (sumOfArray / (sizeRow * sizeColumn));
    						averageOfMajor = (sumOfMajor / (sizeRow));
    						averageOfMinor = (sumOfMinor / (sizeRow));

    						printingRandomArray(array1);
    						System.out.println();
    						System.out.println("The total sum of the array is " + sumOfArray);
    						System.out.println("The total average of the array is " + roundingNumbers(averageOfArray));
    						sumOfRows(array1, sizeRow, sizeColumn);
    						sumOfColumns(array1, sizeRow, sizeColumn);
    						System.out.println("The total sum of the major diagonal is " + sumOfMajor);
    						System.out.println("The total average of the major diagonal is " + roundingNumbers(averageOfMajor));
    						System.out.println("The total sum of the minor diagonal is " + sumOfMinor);
    						System.out.println("The total average of the minor diagonal is " + roundingNumbers(averageOfMinor));
    						System.out.println();
    					}
    						//catches errors
    					catch(IOException e)
    					{
    						System.err.println(e);
    						System.exit(1);
    					}
    				}
    				//cancels the jfc
    				else if(x == JFileChooser.CANCEL_OPTION)
    				{
    					JOptionPane.showMessageDialog(null, "Cancelled");
    					System.exit(1);
    				}
    				//tells the user when there was an error
    				else if(x == JFileChooser.ERROR_OPTION)
    				{
    					JOptionPane.showMessageDialog(null, "You caused an error.");
    					System.exit(1);
    				}
    				break;

			case 3:
				System.out.println("You have exited the program!");
				System.exit(1);

			default:
				System.out.print("The entered value is not an option!");
				break;

		}
	}
	public static double roundingNumbers(double rounded)
	{
		rounded = Math.round(rounded * 100);
		rounded = rounded/100;
		return rounded;
	}

	public static int[][] creatingRandomArray()
	{
		System.out.print("You Have Chosen to Randomly Generate a 2D array\n");
		System.out.print("How many rows would you like in this array?: ");
		int rows1 = input.nextInt();
		System.out.print("How many columns would you like in this array?: ");
		int columns1 = input.nextInt();
		System.out.print("What will be the minimum for  the array?: ");
		int minimum = input.nextInt();
		System.out.print("What will be the maximum for the array?: ");
		int maximum = input.nextInt();

		int [][] arr = new int[rows1][columns1];

		for(int row = 0; row < arr.length; row++)
		{
			for(int column  = 0; column < arr[row].length; column++)
			{
					//creating the random number generator
					int randomNumber = (int)(maximum * Math.random() + minimum);
					//adding spaces in between the numbers
					arr[row][column] = randomNumber;

			}
		}

		return arr;
	}

	public static void printingRandomArray(int[][] arr)
	{
		for(int row = 0; row < arr.length; row++)
		{
			for(int column = 0; column < arr[row].length; column++)
			{
				System.out.print(arr[row][column] + "\t");
			}
			System.out.println();
		}
	}

	public static void sumOfRows(int[][] arr, int sizeRow, int sizeColumn)
	{
		double sum = 0;

		for(int row = 0; row < sizeRow; row++)
		{
			sum = 0;
			for(int column  = 0; column < sizeColumn; column++)
			{

					sum += arr[row][column];
			}
			System.out.println("The sum of row " + (row + 1) + " is "+ sum + " and the average is " + avgOfRows(arr, sizeRow, sum));

		}
		System.out.println("The max average of rows is " + maxOfRows(arr, sizeRow, sum));

	}

	public static void sumOfColumns(int[][] arr, int sizeRow, int sizeColumn)
	{
		float sum1 = 0;

		for(int column  = 0; column < sizeColumn; column++)
		{
			sum1 = 0;
			for(int row = 0; row < sizeRow; row++)
			{

					sum1 += arr[row][column];
			}
			System.out.println("The sum of column " + (column + 1) + " is "+ sum1 + " and the average is " + avgOfColumns(arr, sizeColumn, sum1));
		}
		System.out.println("The max average of columns is " + maxOfColumns(arr, sizeColumn, sum1));
	}

	public static double avgOfColumns(int[][] arr, int sizeColumn, float sum1)
	{
		double avg = 0;
		double max = 0;

		for(int column = 0; column < sizeColumn; column++)
		{
			avg = (sum1 / sizeColumn);
			avg = roundingNumbers(avg);
		}
		if(max < avg)
		{
			max = avg;
		}
		return avg;
	}

	public static double maxOfColumns(int[][] arr, int sizeColumn, double sum)
	{
		double avg = 0;
		double max = 0;

		for(int column = 0; column < sizeColumn; column++)
		{
			avg = (sum / sizeColumn);
			avg = roundingNumbers(avg);
		}
		if(max < avg)
		{
			max = avg;
		}
		return max;
	}

	public static double maxOfRows(int[][] arr, int sizeRows, double sum)
	{
		double avg = 0;
		double max = 0;

		for(int column = 0; column < sizeRows; column++)
		{
			avg = (sum / sizeRows);
			avg = roundingNumbers(avg);
		}
		if(avg > max)
		{
			max = avg;
		}
		return max;
	}

	public static double avgOfRows(int[][] arr, int sizeRow, double sum)
	{
		double avg = 0;

		for(int row = 0; row < sizeRow; row++)
		{
			avg = (sum / sizeRow);
			avg = roundingNumbers(avg);
		}

		return avg;
	}
}