#include <iostream>
#include <string>
#include <time.h>
#include <stdlib.h>
#include <conio.h>

using namespace std;

void clrscr() {
	system("@cls||clear");
}

class Player {
	protected:
		string username;
		int score;

	public:
		Player() {
			score = 0;
		}

		string getName() {
			return username;
		}

		int getScore() {
			return score;
		}

		void resetScore() {
			score = 0;
		}
};

class Game: public Player {
	public:
		void setName(string inputName) {
			username = inputName;
		}

		void addScore(int adds) {
			score = score + adds;
		}

		// Deklarasi method gameInit & gamePlay, konten game bergantung pada method turunan
		virtual void gameInit() {}
		virtual void gamePlay() {}

		void showScoreMenu() {
			clrscr();

			if(username == "") {
				cout << "Anda sama sekali belum bermain" << endl;
				cout << "Tekan tombol untuk kembali" << endl;
				getch();
				showMainMenu();
			} else {
				cout << "Skor dalam permainan terakhir" << endl;
				cout << "Nama pemain: " << getName() << endl;
				cout << "Skor: " << getScore() << endl;
				cout << "Tekan tombol untuk kembali" << endl;
				getch();
				showMainMenu();
			}
		}

		void showMainMenu() {
			int pil=0;

			do {
				clrscr();
				cout << "\t\t===========================================\n" << endl;
				cout << "\t\tSelamat datang di permainan Quiz Matematika\n" << endl;
				cout << "\t\t===========================================\n" << endl;
				cout << "\n\nMenu :" << endl;
				cout << "1. Mulai permainan" << endl;
				cout << "2. Lihat skor" << endl;
				cout << "3. Keluar permainan" << endl;
				cout << "\n\n> Pilih menu ke : ";
				cin >> pil;
			} while(pil < 1 || pil > 3);

			switch(pil) {
				case 1:
					gameInit();
					break;
				case 2:
					showScoreMenu();
					break;
				case 3:
					break;
			}
		}
};

class MathQuiz: public Game
{
	private:
		int keyAnswer;

	public:
		int calc(int op, int x, int y) {
			switch(op) {
				case 0:
					return x + y;
					break;
				case 1:
					return x - y;
					break;
				case 2:
					return x * y;
					break;
				case 3:
					return x / y;
					break;
			}
		}

		string strOps(int n) {
			switch(n) {
				case 0:
					return "+";
					break;
				case 1:
					return "-";
					break;
				case 2:
					return "*";
					break;
				case 3:
					return "/";
					break;
			}
		}

		void createQuestion() {
			clrscr();
			int x = rand() % 10 + 1;
			int y = rand() % 10 + 1;
			int z = rand() % 10 + 1;
			int n = rand() % 4;
			int m = rand() % 4;

			string op_n = strOps(n);
			string op_m = strOps(m);

			keyAnswer = calc(n, x, y);
			keyAnswer = calc(m, keyAnswer, z);

			cout << "Pertanyaan :\n" << endl;
			cout << "[" << x << " " + op_n + " " << y << " " + op_m + " " << z << "]" << endl;
		}

		void gameInit() {
			clrscr();

			string inputName;
			cout << "Selamat bermain!\n" << endl;
			cout << "Untuk melanjutkan silahkan masukkan nama anda: ";
			cin >> inputName;

			setName(inputName);
			resetScore();

			this->gamePlay();
		}

		void gamePlay() {
			int answer;

			createQuestion();
			cout << "\nJawaban anda : ";
			cin >> answer;

			if(isAnswerTrue(answer)) {
				cout << "\nSelamat, jawaban anda benar! :D" << endl;
				addScore(1);
				cout << "Skor semenetara : " << getScore() << endl;
				cout << "Tekan tombol untuk kembali ke menu";
				getch();
				gamePlay();
			} else {
				cout << "Maaf, jawaban anda salah ! :(" << endl;
				cout << "Skor anda: " << getScore() << endl;
				cout << "Tekan tombol untuk kembali ke menu";
				getch();
				showMainMenu();
			}
		}

		bool isAnswerTrue(int answer) {
			return answer == keyAnswer;
		}
};

int main() {
	srand(time(NULL));
	Game *game;
	MathQuiz mathGame;
	game = &mathGame;

	game->showMainMenu();

	return 0;
}