#include "time.h"
#include <drivers/ps2kb.h>
#include <drivers/ps2mouse.h>
#include <panic.h>
#include <print.h>
#include <stddef.h>
#include <arch.h>
#include <math.h>
#include <stdint.h>
#include <stdlib.h>
#include <term.h>

#define WIDTH 30
static char buf[WIDTH];
static double x = 0, y = 0;

void kernel_main(void *boot_info) {
    
    term_init();

    arch_init(boot_info);
    ps2kb_init();
    ps2mouse_init();

    set_timezone(EST);

    while(1) {
        arch_wait_int();

        struct Keycode code = ps2kb_get();
	    if(code.key != KEY_NONE) {
			if(code.flags & KC_FLAG_ERROR) {
	            printk("error:    %X\n", code.key);
	        } else if(code.flags & KC_FLAG_KEY_DOWN) {
	            printk("pressed:  %X\n", code.key);
	        } else {
	            printk("released: %X\n", code.key);
	        }
	    }

        if (code.key == KEY_ESCAPE) {
            arch_poweroff();
        }

        struct MouseEvent event = ps2mouse_get();
        if (event.updated) {
            putchar(event.lmb ? 'L' : '_');
            putchar(event.rmb ? 'R' : '_');
            putchar(event.mmb ? 'M' : '_');
            x += event.relx / 10.0;
            y -= event.rely / 10.0;
            x = fclamp(x, 0, TERM_W);
            y = fclamp(y, 0, TERM_H);
            printk(" x%d y%d\n", (int)x, (int)y);
        }

        uint32_t state = term_save();

        term_setfg(VGA_LIGHT_GREEN);
	    term_setpos(TERM_W - WIDTH - 1, 0);
        for (size_t i = 0; i < WIDTH; i++) putchar(' ');
	    term_setpos(TERM_W - WIDTH - 1, 0);
    
        struct Time t = get_localtime();
        timetostr(&t, "%a %b %d %Y %H:%M:%S", buf, WIDTH);
        printk("%s", buf);

	    term_load(state);

        arch_update();
        term_flush();
    } 
}