#include <iostream>
#include <windows.h>
#include <algorithm>
#include <string>
#include <ctime>
using namespace std;

//function prototypes
void writeString(string, int, int);
void writeChar(char, int, int);
void drawScaffold();
void playGame(string);

int main() {
	string setWord = "";
	char answer    = ' ';
	const int whiteText  = 7;

	string wordBankArray[17] = {	"structure", "function", "assign", "compare",
					"void", "int", "double", "char", "string",
					"datatype", "pointer", "find", "length",
					"replace", "substr", "classes", "insert"};

	srand(static_cast<int>(time(0)));


	do {
			setWord = wordBankArray[rand() % (16 + 1)];
			playGame(setWord);

			SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), whiteText);
			writeString("Would you like to play again? <y/n> ", 30, 18);
			cin >> answer;

		if(answer == 'n' || answer == 'N')
			writeString("", 30, 19);

	}while(answer == 'y' || answer == 'Y');
	return 0;
}//end function

void writeString(string str, int x, int y) {
    COORD pos = {x, y};
    SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), pos);
    cout << str;
}//end function

void writeChar(char c, int x, int y) {
    COORD pos = {x, y};
    SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), pos);
    cout << c;
}//end function

void drawScaffold() {
	COORD pos       = {0, 0};
	SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), pos);

	system("cls");
	writeString("Used Letters", 32, 0);

	writeChar(char(169), 10, 24);
	cout << "---------";
	cout << char(170);


	pos.X = 15; pos.Y = 16;
	SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), pos);
	for(int x = 0; x < 7; x++) {
		pos.Y++;
		SetConsoleCursorPosition (GetStdHandle(STD_OUTPUT_HANDLE), pos);
		cout << char(179);
	}//end for

	writeChar(char(169), 15, 16);
	cout << "-----";
	cout << char(170);
}//end function

void playGame(string setWord) {
	//declare booleans
	bool gameOver    = false;
	bool dashReplace = false;

	//declare variables
	const string alphabet           = "A B C D E F G H I J K L M N O P Q R S T U V W X Y Z";
	string usedLetters              = "_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _";
	string letter                   = "";
	string guessWord                = "";

	unsigned int numChars     = static_cast<int>(setWord.length());
	unsigned int numIncorrect = 0;

	transform(setWord.begin(), setWord.end(), setWord.begin(), toupper);
	guessWord.assign(numChars, '_'); //assigns a dash to however many characters in setWord
	for(unsigned int i = 1; i < (numChars * 2); i += 2)
		guessWord.insert(i, " "); //inserts a blank space between each dash in guessWord

	drawScaffold();
	writeString("Guess this word: ", 30, 15);
	cout << guessWord;
	writeString(usedLetters, 12, 2);

	while(gameOver == false) {
		do {
			writeString("Enter a letter:                   ", 30, 16);
			writeString("", 46, 16);
			cin >> letter;
			transform(letter.begin(), letter.end(), letter.begin(), toupper);

			//error routine that checks if the player inputed valid data for letter
			if(letter < "A" || letter > "Z" || letter.length() >= 2) {
				writeString("You entered an invalid character.", 30, 17);
				Sleep(1000);
				writeString("                                 ", 30, 17);
			}
		}while(letter < "A" || letter > "Z" || letter.length() >= 2);

		//adjusts usedLetters according to the selection
		usedLetters.replace(alphabet.find(letter), 1, letter);
		writeString(usedLetters, 12, 2);

		//adjusts guessWord according to the selection
		for(unsigned int i = 0; i < numChars; i++) {
			if(setWord.substr(i, 1) == letter) {
				guessWord.replace((i * 2), 1, letter);
				dashReplace = true;
			}
		}

		//determine whether a replacement was made
		if(dashReplace == true) {
			//display the status of the guessed word
			writeString("Guess this word: ", 30, 15);
			cout << guessWord;

			//searches guessWord for the first occurance of a dash, if none were found, find() returns a -1
			if((guessWord.find("_", 0)) == -1) {
				gameOver = true;
				writeString("Yes, the word is: ", 30, 17);
				transform(setWord.begin(), setWord.end(), setWord.begin(), tolower);
				setWord[0] = toupper(setWord[0]);
				cout << setWord;
				writeString("I think I'm in love!", 30, 18);

				int numColor = 0;
				for(int x = 0; x < 100; x++) {
					numColor++;
					if(numColor == 15)
						numColor = 1;
					SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), numColor);
					writeString("<3", 51, 18);
					Sleep(50);
					writeString("  ", 51, 18);
				}
			} else
				dashReplace = false;
		} else {
			numIncorrect++;
			switch (numIncorrect) {
				case 1:
					writeChar(char(179), 21, 17);
					writeChar(char(1), 21, 18); //Displays head
					break;
				case 2:
					writeChar(char(179), 21, 19); //Displays body
					writeChar(char(179), 21, 20);
					break;
				case 3:
					writeChar(char(47), 20, 19); //Displays first arm
					break;
				case 4:
					writeChar(char(92), 22, 19); //Displays second arm
					break;
				case 5:
					writeChar(char(47), 20, 21); //Displays first leg
					break;
				case 6:
					gameOver = true;
					writeChar(char(92), 22, 21); //Displays first leg
					Sleep(1000);
					writeString("Sorry, the word is: ", 30, 17);
					transform(setWord.begin(), setWord.end(), setWord.begin(), tolower);
					setWord[0] = toupper(setWord[0]);
					cout << setWord;
					break;
				default:
					break;
			}//end switch
		}//end else
	}//end while
}//end function