#include "../hdrs/memory.h"
#include <stdio.h>
#include <string.h>
#include "../hdrs/font.h"
#include "libft.h"

void memory_init(t_memory *mem)
{
    ft_memset(mem->memory, 0, MEMORY_SIZE);
}
int memory_load_rom(t_memory *mem, FILE *fp)
{
    fseek(fp, 0, SEEK_END);
    size_t rom_size = ftell(fp);
    rewind(fp);

    if (rom_size > (sizeof(mem->memory) - 0x200))
    {
        return (1);
    }

    if (fread(&mem->memory[0x200], 1, rom_size, fp) != rom_size)
    {
        return (1);
    }

    return (0);
}

void memory_clear_screen(t_memory *mem)
{
    ft_memset(mem->screen, 0, SCREEN_WIDTH * SCREEN_HEIGHT);
}

void memory_load_fontset(t_memory *mem)
{
    ft_memcpy(&mem->memory[MEMORY_SIZE - FONTSET_SIZE], FONTSET, FONTSET_SIZE);
}


void memory_dump(t_memory *mem, const char *path)
{
    FILE *fp = fopen(path, "wb");

    if (!fp)
    {
        printf("Failed to open: %s\n", path);
        exit(1);
    }

    fwrite(mem->memory, 1, MEMORY_SIZE, fp);
    fclose(fp);
    printf("Memory dumped to: %s\n", path);
}