#include "type.h"
#include "const.h"
#include "protect.h"
#include "string.h"
#include "proc.h"
#include "tty.h"
#include "console.h"
#include "global.h"
#include "proto.h"
#include "keyboard.h"
#include "x86.h"
#include "memman.h"
#include "stdio.h"
#include "serialport.h"
#include "bga.h"


static int _cursor_x = 0;
static int _cursor_y = 0;
static int _fbwidth = 0;
static int _fbheight = 0;
static int _fbpixels_per_row = 0;
static int _fbscale = 1;
static uint32_t _basecolor = 0x0;
static uintptr_t _fb_paddr = 0;
volatile uint32_t* _fb = NULL;
#include "font8x8.h"
static void update_cursor_position(char c)
{
    _cursor_x += 8 * _fbscale;

    if (c == '\n' || (_cursor_x + 8 * _fbscale) > _fbwidth) {
        _cursor_y += 8 * _fbscale;
        _cursor_x = 0;

        if ((_cursor_y + 8 * _fbscale + 2) > _fbheight) {
            _cursor_y = 0;
        }
    }
}
static void draw_cursor() {
	for (int x = 0; x < (8 * _fbscale); x++) {
        for (int y = 0; y < (8 * _fbscale); y++) {
            uint32_t ind = (_cursor_x + x) + ((_cursor_y + y) * _fbpixels_per_row);
            uint32_t clr = _basecolor;
            if (font8x8_basic[0][y / _fbscale] & (1 << (x / _fbscale))) {
                clr ^= 0xffffffff;
            }
            _fb[ind] = clr;
        }
    }
}
static void draw_char_on_screen(char c)
{
    for (int x = 0; x < (8 * _fbscale); x++) {
        for (int y = 0; y < (8 * _fbscale); y++) {
            uint32_t ind = (_cursor_x + x) + ((_cursor_y + y) * _fbpixels_per_row);
            uint32_t clr = _basecolor;
            if (font8x8_basic[c & 0x7f][y / _fbscale] & (1 << (x / _fbscale))) {
                clr ^= 0xffffffff;
            }
            _fb[ind] = clr;
        }
    }
    update_cursor_position(c);
}
int screen_setup()
{
    _cursor_x = 0;
    _cursor_y = 0;
    _fb = (uint32_t*)bga_ioctl(BGA_GET_BUFFER, 0);
    _fb_paddr = bga_ioctl(BGA_GET_BUFFER, 0);
    _fbwidth = bga_ioctl(BGA_GET_WIDTH, 0);
    _fbheight = bga_ioctl(BGA_GET_HEIGHT, 0);
    _fbpixels_per_row = _fbwidth;
    _fbscale = 2;

    return 0;
}

void task_tty()
{
	// main rountine for drawing framebuffered console

	char text1[] = "hello world\n shit\b idiot\n retard fuckyou\n";
	char text2[] = "shabi ni\n ni zhe ge zhi zhangg\b ma de la ji wan yi er\n";
	
	screen_setup();
    mmap((u32)_fb, _fb_paddr, _fbwidth * _fbheight * 4 * 2);
	for (char* p = text1; *p; ++ p){
			draw_char_on_screen(*p);
		}
		for (char* p = text2; *p; ++ p){
			draw_char_on_screen(*p);
		}
		draw_cursor();
	while (1)
	{
		
	}
}