#include <stdio.h>
#include <unistd.h>
#include <curses.h>

struct crypto_coin {
	const char *name;
	const char *description;
	double prices[30];
};

enum game_state {
	GAME_BEGIN,
	GAME_IDLE,
	GAME_BUY,
	GAME_SELL,
	GAME_END,
};

struct game {
	enum game_state state;
	int bank;
	int time;
	struct crypto_coin coin;
};

void game_draw(struct game *g)
{
	mvaddstr(0, 0, g->coin.name);
	mvaddstr(1, 0, "-----------------");
	mvaddstr(2, 0, g->coin.description);

	char buf[50];
	mvaddstr(3, 0, "You have: ");
	sprintf(buf, "%i dollars.", g->bank);
	mvaddstr(3, 15, buf);
	
	for (int i = 0; i < 20; i++) {
		mvaddch(i+5, 0, '|');
	}
	
	for (int i = 0; i < g->time; i++) {
		color_set(1, NULL);
		mvaddch(20 - g->coin.prices[i]+5, i+1, '-');
		for (int j = 20 - g->coin.prices[i] + 1; j < 20; j++) {
			color_set(2, NULL);
			mvaddch(j+5, i+1, ' ');
		}
	}

	g->time++;
	refresh();
}

int main(void)
{
	initscr();
	start_color();
	init_pair(1, COLOR_BLACK, COLOR_RED);
	init_pair(2, COLOR_BLACK, COLOR_GREEN);
	cbreak();
	noecho();
	nonl();
	intrflush(stdscr, FALSE);
	keypad(stdscr, TRUE);
	clear();
	refresh();

	struct game game = {
		.state = GAME_BEGIN,
		.bank = 1000,
		.time = 0,
		.coin = (struct crypto_coin) {
			.name = "BitCoin",
			.description = "A fucking scam.",
			.prices = {
				10, 11, 12, 12, 12, 12, 12,
				13, 13, 13, 11, 11, 10, 10,
				9, 9, 10, 10, 11, 11, 11, 12,
			}
		}
	};

	for (int i = 0; i < 20; i++) {
		game_draw(&game);
		sleep(1);
	}

	refresh();
	
	sleep(10);
	endwin();
}