#pragma once

#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>

#define VGA_WIDTH  80
#define VGA_HEIGHT 25
#define TERM_BUF   ((uint16_t *)0xB8000)
#define TERM_COUNT 10

struct screen {
	size_t row;
	size_t column;
	uint8_t color;
	uint16_t buffer[VGA_WIDTH * VGA_HEIGHT];
};

enum vga_color {
	VGA_COLOR_BLACK = 0,
	VGA_COLOR_BLUE = 1,
	VGA_COLOR_GREEN = 2,
	VGA_COLOR_CYAN = 3,
	VGA_COLOR_RED = 4,
	VGA_COLOR_MAGENTA = 5,
	VGA_COLOR_BROWN = 6,
	VGA_COLOR_LIGHT_GREY = 7,
	VGA_COLOR_DARK_GREY = 8,
	VGA_COLOR_LIGHT_BLUE = 9,
	VGA_COLOR_LIGHT_GREEN = 10,
	VGA_COLOR_LIGHT_CYAN = 11,
	VGA_COLOR_LIGHT_RED = 12,
	VGA_COLOR_LIGHT_MAGENTA = 13,
	VGA_COLOR_LIGHT_BROWN = 14,
	VGA_COLOR_WHITE = 15,
};

void terminal_initialize(void);
void terminal_setcolor(uint8_t color);
void terminal_putentryat(char c, uint8_t color, size_t x, size_t y);
int terminal_putchar(char c);
int terminal_write(const char *data, size_t size);
int terminal_writestring(const char *data);
int terminal_writelong(long number);
void terminal_set_screen(int pos);
uint8_t terminal_getkey(void);
void update_cursor(void);