#ifndef CODEREADER
#define CODEREADER

#include "consts.c"
#include <stdio.h>
#include <stdlib.h>
#include "program.c"

unsigned int fromFile(char *path, struct program program) {
    unsigned int countInstructions;
    unsigned int staticVars;
    FILE *fptr;
    fptr = fopen(path, "r+b");
    if (fptr == NULL) {
        printf("Error: cannot open code file %s\n", path);
        exit(EXIT_FAILURE);
    }
    unsigned int buffer[4];
    fread(buffer, 4, 4, fptr);
    // Check file type
    if (buffer[0] != 0x46424A4E) {
        printf("Error: wrong file type");
        exit(EXIT_FAILURE);
    }
    if (buffer[1] != VERSION) {
        printf("Error: wrong version");
        exit(EXIT_FAILURE);
    }
    countInstructions = buffer[2];
    staticVars = buffer[3];
    unsigned int instBuffer[countInstructions];
    fread(instBuffer, 4, countInstructions, fptr);
    copyToProgram(instBuffer, countInstructions, program);
    return staticVars;
}

#endif /* ifdef CODEREADER */