Stock System Project

#include <stdio.h>
#include <string.h>
// #include <windows.h>

struct MY_DATE {
    int DAY, MONTH, YEAR;
};

struct MY_PRODUCT {
    char NAME[10];
    int PRICE;
    struct MY_DATE DATE; // TODO: delete DATE
};

struct STOCK {
    struct MY_PRODUCT PRODUCT;
    int QUANTITY;
    struct MY_DATE DATE;
};

struct MY_PRODUCT add_product() {
    system("@cls||clear"); // system("cls");
    puts("+---------------------+");
    puts("| Product information |");
    puts("+---------------------+");

    struct MY_PRODUCT NEW_PRODUCT;

    printf(" Name: ");
    scanf("%s", NEW_PRODUCT.NAME);

    printf(" Price: ");
    scanf("%d", &NEW_PRODUCT.PRICE);

    puts("\n Expiry Date ");
    printf(" Day: ");
    scanf("%d", &NEW_PRODUCT.DATE.DAY);
    printf(" Month: ");
    scanf("%d", &NEW_PRODUCT.DATE.MONTH);
    printf(" Year: ");
    scanf("%d", &NEW_PRODUCT.DATE.YEAR);

    return NEW_PRODUCT;
}

struct STOCK add_stock() {
    system("@cls||clear"); // system("cls");
    puts("+---------------------+");
    puts("| Stock information |");
    puts("+---------------------+");

    struct STOCK NEW_STOCK;

    printf(" Name: ");
    scanf("%s", NEW_STOCK.PRODUCT.NAME);

    printf(" Price: ");
    scanf("%d", &NEW_STOCK.PRODUCT.PRICE);

    printf(" Quantity: ");
    scanf("%d", &NEW_STOCK.QUANTITY);

    puts("\n Expiry Date ");
    printf(" Day: ");
    scanf("%d", &NEW_STOCK.PRODUCT.DATE.DAY);
    printf(" Month: ");
    scanf("%d", &NEW_STOCK.PRODUCT.DATE.MONTH);
    printf(" Year: ");
    scanf("%d", &NEW_STOCK.PRODUCT.DATE.YEAR);

    return NEW_STOCK;
}

void save_product(struct MY_PRODUCT NEW_PRODUCT, int FILE_CHOICE) {
    FILE * MY_FILE;

    if(FILE_CHOICE == 1) MY_FILE = fopen("product.txt","a+");

    if (FILE_CHOICE == 2) MY_FILE = fopen("temporaly-product.txt","a+");

    fprintf(MY_FILE,"%s\t%d\t%d\t%d\t%d\n", NEW_PRODUCT.NAME, NEW_PRODUCT.PRICE,
            NEW_PRODUCT.DATE.DAY, NEW_PRODUCT.DATE.MONTH, NEW_PRODUCT.DATE.YEAR);
}

void save_stock(struct STOCK NEW_STOCK, int FILE_CHOICE) {
    FILE * MY_FILE;

    if(FILE_CHOICE == 1) MY_FILE = fopen("stock.txt","a+");

    if (FILE_CHOICE == 2) MY_FILE = fopen("temporaly-stock.txt","a+");

    fprintf(MY_FILE,"%s\t%d\t%d\t%d\t%d\t%d\n", NEW_STOCK.PRODUCT.NAME, NEW_STOCK.PRODUCT.PRICE,
            NEW_STOCK.QUANTITY, NEW_STOCK.PRODUCT.DATE.DAY, NEW_STOCK.PRODUCT.DATE.MONTH,
            NEW_STOCK.PRODUCT.DATE.YEAR);
}

void read_product() {
    struct MY_PRODUCT THIS_PRODUCT;
    FILE * MY_FILE = fopen("product.txt","r");

    system("@cls||clear"); // system("cls");
    puts("+-----------------------------+");
    puts("|     Product information     |");
    puts("+-------+-------+-------------+");
    puts("| Name  | Price | Expiry Date |");
    puts("+-------+-------+-------------+");

    if(MY_FILE != NULL) {
        while(!feof(MY_FILE)) {
            fscanf(MY_FILE,"%s\t%d\t%d\t%d\t%d", THIS_PRODUCT.NAME, &THIS_PRODUCT.PRICE,
                   &THIS_PRODUCT.DATE.DAY, &THIS_PRODUCT.DATE.MONTH, &THIS_PRODUCT.DATE.YEAR);

            printf("| %s\t| %d\t| %d/%d/%d   |\n", THIS_PRODUCT.NAME, THIS_PRODUCT.PRICE,
                   THIS_PRODUCT.DATE.DAY, THIS_PRODUCT.DATE.MONTH, THIS_PRODUCT.DATE.YEAR);
        }
    }

    puts("+-------+-------+-------------+");
}

void read_stock() {
    struct STOCK THIS_STOCK;
    FILE * MY_FILE = fopen("stock.txt","r");

    system("@cls||clear"); // system("cls");
    puts("+----------------------------------------+");
    puts("|             Stock information          |");
    puts("+-------+-------+----------+-------------+");
    puts("| Name  | Price | Quantity | Expiry Date |");
    puts("+-------+-------+----------+-------------+");

    if(MY_FILE != NULL) {
        while(!feof(MY_FILE)) {
            fscanf(MY_FILE,"%s\t%d\t%d\t%d\t%d\t%d", THIS_STOCK.PRODUCT.NAME,
                   &THIS_STOCK.PRODUCT.PRICE, &THIS_STOCK.QUANTITY,
                   &THIS_STOCK.PRODUCT.DATE.DAY, &THIS_STOCK.PRODUCT.DATE.MONTH,
                   &THIS_STOCK.PRODUCT.DATE.YEAR);

            printf("| %s\t| %d\t| %d\t| %d/%d/%d   |\n", THIS_STOCK.PRODUCT.NAME,
                   THIS_STOCK.PRODUCT.PRICE, THIS_STOCK.QUANTITY,
                   THIS_STOCK.PRODUCT.DATE.DAY, THIS_STOCK.PRODUCT.DATE.MONTH,
                   THIS_STOCK.PRODUCT.DATE.YEAR);
        }
    }

    puts("+-------+-------+----------+-------------+");
}

void remove_product() {
    struct MY_PRODUCT THIS_PRODUCT;
    FILE * MY_FILE = fopen("product.txt","r");
    char NAME[10];

    system("@cls||clear"); // system("cls");
    puts("+------------------------------+");
    puts("| Enter product NAME to remove |");
    puts("+------------------------------+");
    printf(" : ");

    scanf("%s", NAME);

    if(MY_FILE != NULL) {
        while(!feof(MY_FILE)) {
            fscanf(MY_FILE,"%s\t%d\t%d\t%d\t%d", THIS_PRODUCT.NAME, &THIS_PRODUCT.PRICE,
                   &THIS_PRODUCT.DATE.DAY, &THIS_PRODUCT.DATE.MONTH, &THIS_PRODUCT.DATE.YEAR);

            if (strcmp(NAME, THIS_PRODUCT.NAME) != 0) save_product(THIS_PRODUCT, 2);
        }

        // TODO: cut information from "temporaly-product.txt" to "product.txt"
        FILE *file = fopen("product.txt", "w");
        fclose(file);
    }

    puts("+-------+-------+-------------+");
}

void remove_stock() {
    struct STOCK THIS_STOCK;
    FILE * MY_FILE = fopen("stock.txt","r");
    char NAME[10];

    system("@cls||clear"); // system("cls");
    puts("+----------------------------+");
    puts("| Enter stock DATE to remove |");
    puts("+----------------------------+");
    printf(" : ");

    scanf("%s", NAME);

    if(MY_FILE != NULL) {
        while(!feof(MY_FILE)) {
            fscanf(MY_FILE,"%s\t%d\t%d\t%d\t%d", THIS_STOCK.PRODUCT.NAME,
                   &THIS_STOCK.PRODUCT.PRICE, &THIS_STOCK.QUANTITY, &THIS_STOCK.PRODUCT.DATE.DAY,
                   &THIS_STOCK.PRODUCT.DATE.MONTH, &THIS_STOCK.PRODUCT.DATE.YEAR);

            if (strcmp(NAME, THIS_STOCK.PRODUCT.NAME) != 0) save_product(THIS_STOCK.PRODUCT, 2);
        }

        // TODO: cut information from "temporaly-product.txt" to "product.txt"

    }

    puts("+-------+-------+-------------+");
}


void message1() {
    puts("+-------------------+");
    puts("| Stock Management  |");
    puts("| 1. Manage product |");
    puts("| 2. Manage stock   |");
    puts("| Press Q to exit   |");
    puts("+-------------------+");
}

void message1a() {
    system("@cls||clear"); // system("cls");
    puts("+-------------------+");
    puts("| Manage product    |");
    puts("| 1. Add product    |");
    puts("| 2. Remove product |");
    puts("| 3. See products   |");
    puts("| 4. Back to top    |");
    puts("+-------------------+");
}

void message1b() {
    system("@cls||clear"); // system("cls");
    puts("+-------------------+");
    puts("| Manage stock      |");
    puts("| 1. Add stock      |");
    puts("| 2. Remove stock   |");
    puts("| 3. See stock      |");
    puts("| 4. Back to top    |");
    puts("+-------------------+");
}

int main() {
    int CHOICE;

    message1();
    scanf("%d", &CHOICE);

    switch(CHOICE) {
    case 1: // Manage Product
        message1a();
        scanf("%d", &CHOICE);

        switch (CHOICE) {
        case 1: // Add Product
            save_product(add_product(), 1);
            break;

        case 2: // Remove Product
            remove_product();
            break;

        case 3: // See Products
            read_product();
            break;
        default:
            break;
        }

        break;
    case 2: // Manage Stock
        message1b();
        scanf("%d", &CHOICE);

        switch (CHOICE) {
        case 1: // Add Stock
            save_stock(add_stock(), 1);
            break;

        case 2: // Remove Stock
            remove_stock();
            break;

        case 3: // See Stock
            read_stock();
            break;
        default:
            break;
        }

        break;
    default:
        exit(0);
    }

    return 0;
}