#include <iostream>
#include <iomanip>
#include <time.h>
#include <conio.h>
#include "HiddenSquaresHeader.h"
using namespace std;

//Extern Int command used to call in global varible to be used in functions from main.cpp
extern int hiddensquarex, hiddensquarey;
extern int LastGuess[26][26];
extern int lives;



//Function for creating the hidden square with random X and Y coordinates
int CreateHiddenSquare()
{
	//Begin random number generator
	srand((unsigned)time(NULL));

	//Choose random numbers for x and y coords out of 26
	hiddensquarex = rand()%25;
	hiddensquarey = rand()%25; 
	
	//Clear the screen
	system("CLS"); 

	//For testing purposes show X and Y value
 	//cout << hiddensquarex << " " << hiddensquarey;
	return 0;
}

//Function for entering coordinates and validation checking : also contains code that displays the
//Direction of the hidden square from the last values entered
int EnterCoordinates()
{
	//Declare varibles for the coordinates that will be inputted by the user
	//CheckedColumn is char because the vertical line is alphabetic.
	int CheckedRow = 0;
	char CheckedColumn = 0;

	//Show player how many attempts he has to guess the coordinates of the hidden square.
	cout << "You have " << lives << " lives remaining" << endl;

	//Validation code - only lets the user input a value between 1 and 26
	while (CheckedRow < 1 || CheckedRow > 26)
 	{
		cout << "Please Enter which number you would like to check 1 => 26" << endl;
		cin >> CheckedRow;
		//Code to ensure correct datatype is entered, there was previously a bug where incorrect datatype would cause and infinite loop.
		if (cin.fail())
		{
			//If the input was not valid, clear last input and ignore first 1000 characters
			cin.clear(); 
			cin.ignore(1000,'\n');
		}
	}
	//Validation code - only lets the user input a value between 65 and 90 (The ascii values of A - Z)
	while (CheckedColumn < 65 || CheckedColumn > 90)
	{ 
		cout << "Please Enter Which letter you would like to check A => Z (Case Sensitive)" << endl; 
		cin >> CheckedColumn;
		//Check if input was valid
		if (cin.fail())
		{
			//If the input was not valid, clear last input and ignore first 1000 characters
			cin.clear(); 
			cin.ignore(1000,'\n');
		}
	}
	
	//Inform the user of the coordinates he has entered
	cout << "You have checked " << CheckedRow << " " << CheckedColumn << " and the result is..." << endl;

// Debug Line 
//	cout << "DEBUG: if(" <<CheckedRow << " == " << (hiddensquarex + 1) << " &&" << (CheckedColumn - 64) << " ==  " << (hiddensquarey + 1) <<")" << endl;
 
	//Check if the Coordinates entered are those of the hidden squares.
    if(CheckedRow == (hiddensquarex + 1) && (CheckedColumn - 64) == hiddensquarey + 1)
	{
		//Inform player he has won the game - also info him where the sqaure was.
		cout << "Congratulations! You have won the game!" << endl;
		cout << endl;
		cout << "The Hidden square was at " << CheckedRow << " " << CheckedColumn << " !!!!!" << endl; 
		return 0;
	}
	else
	{
		//If the player did not enter the correct coordinates - check if the coordinates have already been entered and 
		//prevent the player from making a mistake.
		if(LastGuess[CheckedRow - 1][(CheckedColumn - 65)] == 1)
		{
			cout << "You have already checked this square! However you will not lose a life!" << endl;
			lives ++;
		}
		else
		{
			//If the player made an incorrect guess - inform him that he has lost a life and add his guessed coordinates to the grid.
			cout << "Your Guess is incorrect! you will lose a life!" << endl;
			LastGuess[(CheckedColumn - 65 )][CheckedRow - 1] = 1;
		}		
	}

// Begin the testing to inform the player of the direction he should guess in next.
	
	// Check if we are good on east/west 
	if (CheckedRow - 1 == hiddensquarex) 
	{ 
		//We know we arent east/west, we are only north south
		if (CheckedColumn - 65  < hiddensquarey)
		{
			cout << "GO SOUTH" << endl;
		}
		else 
		{
			cout << "GO NORTH" << endl;
		}
	}
	// Check if we are ok on north/south
	else if (CheckedColumn - 65  == hiddensquarey) 
	{
		// We know we arent north/south, we are only east/west 
		if (CheckedRow - 1 < hiddensquarex)
		{
			cout << "GO EAST" << endl;
		}
		else
		{
			cout << "GO WEST" << endl;
		}
	} 
	//Check if we must head east
	else if (CheckedRow - 1 < hiddensquarex) 
	{
		// We know we must head east, check if we need to go north south
		if (CheckedColumn - 65  < hiddensquarey)
		{
			cout << "GO SOUTHEAST" << endl;
		}
		else
		{
			cout << "GO NORTHEAST" << endl;
		}
	}
	//We must be either north or south
	else
	{
		//We know we must head west - check if we must head north or south
		if (CheckedColumn - 65 < hiddensquarey)
		{
			cout << "SOUTHWEST" << endl;
		}
		else
		{
			cout << "NORTHWEST" << endl;
		}
	}
	return 0;
}

//Function to draw the grid onto the screen
int DisplayGrid()
{
	//Declare the varibles needed - including a large 2d Array
	int coords[26][26] = {0};
	int columnNumber = 0;
	int columnNumber2 = 0;

	//Take a new line
    cout << endl;
    cout << " ";

	//Show the top value of the column headings 
    for(int columnheading = 0; columnheading <9; columnheading ++)
    {
		cout << setw(2) << columnNumber2;
    }
    columnNumber2++;
    for(int columnheading2 = 0; columnheading2 <10; columnheading2 ++)
    {
		 cout << setw(2) << columnNumber2;
    }
    columnNumber2++;
    for(int columnheading3 = 0; columnheading3 <7; columnheading3 ++)
    {
		 cout << setw(2) << columnNumber2;
    }

	//Take a new line and take a space for the purposes of arrangement
    cout << endl;
    cout << " ";

	//Show the second line of the headings
    for(int columnheading4 = 0; columnheading4 <26; columnheading4 ++)
    {
	    if (columnNumber > 8)
		{
			 columnNumber = 0;
			 cout << setw(2) << columnNumber;
		}
	    else
		{
			 columnNumber++;
			 cout << setw(2) << columnNumber;
		}
	}

	//Show a dividing line to make it easier to distinguish between the headings and the grid
     cout << endl;	
	 cout << "-------------------------------------------------------------------------------" << endl;

	 //begin to draw out the 26x26 grid
	 for (int i = 0; i < 26; i++) 
	 {
		//Put the letters at the left of the grid 
		char column = i+65;
		cout << column;
		for (int j = 0; j < 26; j++) 
		{
			//If the coordinate has already been guessed, display that fact.
			if (LastGuess[i][j] > 0)
			{
 
				cout << setw(2) << "X";
 
			}
			else
			{
				//If the coordinate has not been guessed - show a 0
				cout << setw(2) << coords[i][j];
 
			}
 
		}
		cout << endl;	
	 }
	 //Show another dividing line for to outline the grid better.
	 cout << "-------------------------------------------------------------------------------" << endl;
	 cout << endl;

	 return 0;
}