/*
 * =====================================================================================
 *
 *       Filename:  auta.c
 *
 *    Description:  auticka
 *
 *        Version:  1.0
 *        Created:  11/30/2011 04:04:02 PM
 *       Revision:  none
 *       Compiler:  gcc
 *
 *         Author:  Milan Kabat (), kabat@ics.muni.cz
 *        Company:  FI MUNI
 *
 * =====================================================================================
 */


#include	<stdlib.h>
#include	<stdio.h>
#include	<string.h>
#include	<time.h>

#define YEAR_SPAN 61
#define NUM_COLORS 6
#define NUM_BRANDS 7
#define FILENAME_BINARY "car_list.dat"
#define FILENAME "car_list.txt"

char *brands[] = { "Opel", "Mazda", "Toyota", "Skoda", "Audi", "Buick", "Ford" };

enum colors { red, yellow, blue, green, white, black };

struct car {
    char brand[20];
    enum colors color;
    int year;
};

void printCar(struct car *c) {
    char color[10];

    switch(c->color) {
	case red:    { strcpy(color, "Red"); break;}
	case yellow: { strcpy(color, "Yellow"); break;}
	case blue:   { strcpy(color, "Blue"); break;}
	case green:  { strcpy(color, "Green"); break;}
	case white:  { strcpy(color, "White"); break;}
	case black:  { strcpy(color, "Black"); break;}
    }

   printf("| %-10s | %-10s | %d\n", color, c->brand, c->year);
}

void createCarsAsText(int howMany, FILE *f) {
    struct car c;
    for(int i = 0; i < howMany; i++) {
        c.year = rand()%YEAR_SPAN + 1950;
        c.color = rand()%NUM_COLORS;
        sprintf(c.brand, "%s", brands[rand()%NUM_BRANDS]);
        //printCar(&c);
        fprintf(f, "%s %d %d\n", c.brand, c.color, c.year);
    }

}

void readCarsAsText(FILE *f) {
    int a;
    while((a = fgetc(f)) && !feof(f)) {
        printf("%c", a);
    }
}

void createCarsBinary(int howMany, FILE *f) {
    struct car c;
    for(int i = 0; i < howMany; i++) {
        c.year = rand()%YEAR_SPAN + 1950;
        c.color = rand()%NUM_COLORS;
        sprintf(c.brand, "%s", brands[rand()%NUM_BRANDS]);
        fwrite(&c, sizeof(struct car), 1, f);
    }
}

void readCarsBinary(FILE *f) {
    struct car c;
    while(!feof(f)) {
        if(fread(&c, sizeof(struct car), 1, f)) {
            printCar(&c);
        }
    }
}

/*
 * ===  FUNCTION  ======================================================================
 *         Name:  main
 *  Description:
 * =====================================================================================
 */
int main ( int argc, char *argv[] )
{
    srand(time(NULL));

    FILE *f;

    /*f = fopen(FILENAME, "w");
    createCarsAsText(100, f);
    fclose(f);

    f = fopen(FILENAME, "r");
    readCarsAsText(f);
    fclose(f);
*/

    f = fopen(FILENAME_BINARY, "wb");
    createCarsBinary(10, f);
    fclose(f);


    f = fopen(FILENAME_BINARY, "rb");
    readCarsBinary(f);
    fclose(f);


    printf("\n\n");
    return EXIT_SUCCESS;
}				/* ----------  end of function main  ---------- */