#include <kernel/tty.h>
#include <stddef.h>
#include <debugging.h>
#include <kernel/keyboard.h>
#include "../io.h"

struct interrupt_frame {
    uint32_t eflags;
    uint32_t cs;
    uint32_t eip;
};

uint8_t test = 'a';

static void stack_trace() 
{
    uint32_t* stack = 0;
    asm("mov %%esp, %0" : "=r" (stack));
    for (int i = 0; i < 25; i++) {
        uint32_t* current_address = stack + (i * 4);
        print_hex_bytes(&current_address, 4); 
        terminal_writestring(":   ");
        print_hex_bytes(current_address, 4); 
        terminal_putchar('\n');
    }
}

__attribute__((interrupt)) void divide_by_zero(struct interrupt_frame* frame) 
{
    terminal_writestring("Yo dude u cant divide by zero yao\n");
    while (1) { }
}

__attribute__((interrupt)) void general_protection_fault(struct interrupt_frame* frame)
{
    terminal_writestring("GPF handler called\n");
    while (1) { }
}

__attribute__((interrupt)) void double_fault(struct interrupt_frame* frame) 
{
    terminal_writestring("2 Errors in a row, u better behave naughty naughty\n");
    while (1) { }
}

__attribute__((interrupt)) void exception(struct interrupt_frame* frame)
{
    terminal_writestring("Some weird error code stuff\n");
    while (1) { }
}

__attribute__((interrupt)) void print(struct interrupt_frame* frame)
{
    char* start;
    asm("mov %%edx, %0" : "=r" (start));
    terminal_writestring(start); 
}

__attribute__((interrupt)) void input(struct interrupt_frame* frame)
{
    char* buffer;
    asm("mov %%edx, %0" : "=r" (buffer));

    /* size_t index = 0;

    char current_character = get_last_key_pressed();
    while (current_character != '\n') {
        char tmp = get_last_key_pressed();
        if (current_character != -1 && tmp != current_character) {
            buffer[index] = current_character;
            terminal_putchar(current_character);
            index++;
        }
        current_character = tmp;
    }
    buffer[index] = '\0'; */
}

__attribute__((interrupt)) void keyboard_interrupt(struct interrupt_frame* frame)
{
    uint8_t scancode = inb(0x60);
    handle_keyboard(scancode);
    outb(0x20, 0x20);
}

__attribute__((interrupt)) void irq(struct interrupt_frame* frame) 
{
    outb(0x20, 0x20);
}