rhnadi / library-system

Library-System using C-Language

Program dengan ADT dengan bahasa C untuk kasus peminjaman buku perpustakaan (mencakup minimal data mahasiswa, buku yang dipinjam, lama waktu peminjaman, waktu pengembalian, denda jika terlambat mengembalikan).

Fitur :

• Perpustakaan (Add Buku, Get Buku, Update Buku, Delete Buku)
• Peminjaman (Add Peminjaman, Get Peminjaman, Delete Peminjaman, Return Peminjaman, Denda)

Model	Description	Define
Book	Mendefiniskan detail buku seperti id, title, description, etc	book.c
Library	Berisikan array yang berisi book dan jumlah buku	library.c
Mahasiswa	Mendefinisikan detail mahasiswa ketila meminjam buku	mahasiswa.c
Borrowing	Medefinisikan sebuah peminjaman yang berisi data book dan mahasiswa	borrowing.c
BorrowingList	Berisikan array yang berisi peminjaman dan jumlah peminjaman	borrowing_list.c
Time	Mendefinisikan data waktu day, month, year	time.c

Usage

• Initializing :

void main() {
    struct Library lib = initLibrary();
    struct BorrowingList borrowing_list = initBorrowingList();
    
    ...
}

• Handler :

LibraryHandler(&lib); // Handler untuk library
BorrowingHandler(&lib, &borrowing_list); // Handler untuk Peminjaman

Service

Library

• Add Book

Fungsi untuk menambahkan buku ke library

struct Book AddBook(struct Library *library, struct Book book, char *error){
    book.Borrowed = 0;
    for (int i = 0; i < library->count; i++) {
        int compare = strcmp(book.ID, library->books[i].ID);
        if (compare == 0) {
            strcpy(error, BOOK_ALREADY_EXIST);
            return book;
        }
    }

    if (library->count == 0) {
        library->books[0] = book;
    } else {
        library->books[library->count] = book;
    }
    library->count += 1;

    return book;
}

• Get Book

Fungsi untuk mencari buku berdasarkan id buku

struct Book *GetBook(struct Library *library, char *id, char *error){
    for (int i = 0; i <= library->count; i++ ) {
        int result = strcmp(id, library->books[i].ID);
        if (result == 0) {
            return (&library->books[i]);
        }
    };

    strcpy(error, BOOK_NOT_FOUND);
};

• Update Book

Fungsi untuk mengubah buku berdasarkan id buku

struct Book UpdateBook(struct Library *lib, struct Book book, char *error) {
    for (int i = 0; i <= lib->count; i++) {
        if (strcmp(lib->books[i].ID, book.ID) == 0) {
            strcpy(lib->books[i].Title, book.Title);
            strcpy(lib->books[i].Description, book.Description);
            strcpy(lib->books[i].Author, book.Author);
            strcpy(lib->books[i].Publisher, book.Publisher);
            lib->books[i].CountPage = book.CountPage;
            lib->books[i].Year = book.Year;
            return lib->books[i];
        }
        strcpy(error, BOOK_NOT_FOUND);
    }
}

• Delete Book

Fungsi untuk menghapus buku berdasarkan id buku

bool DeleteBook(struct Library *lib, char *id, char *error) {
    for (int i = 0; i < lib->count; i++) {
        int compare = strcmp(id, lib->books[i].ID);
        if (compare == 0) {
            for (int j = i + 1; j < lib->count; j++) {
                lib->books[i] = lib->books[j];
            }
            lib->count = lib->count - 1;
            return true;
        }
    }

    strcpy(error, BOOK_NOT_FOUND);
    return false;
}

Borrowing

Untuk mengubah denda keterlambatan pengembalian per hari berada pada [setting.h]

• Add Borrowing

Menambahkan peminjaman dengan memasukan id book dan informasi mahasiswa

struct Borrowing AddBorrowing(
    struct Library *library, 
    struct BorrowingList *borrowing_list, 
    struct Mahasiswa mahasiswa,
    char *id, 
    char *error
) {
    for (int i = 0; i <= library->count; i++ ) {
        int result = strcmp(id, library->books[i].ID);
        if (result == 0) {
            if (library->books[i].Quantity != library->books[i].Borrowed) {
                if (borrowing_list->count == 0) {
                    struct Borrowing b;
                    
                    library->books[i].Borrowed++;
                    b.book = (&library->books[i]);

                    time_t t = time(NULL);
                    t += 604800;
                    struct tm now = *localtime(&t);
                    struct Time deadline;
                    deadline.day = now.tm_mday;
                    deadline.month = now.tm_mon;
                    deadline.year = now.tm_year;

                    b.deadline = deadline;
                    b.mahasiswa = mahasiswa;
                    b.late_charge = 0;

                    borrowing_list->list[0] = b;
                    
                    borrowing_list->count++;
                    return borrowing_list->list[0]; 
                } else {
                    library->books[i].Borrowed++;
                    borrowing_list->list[borrowing_list->count].book = (&library->books[i]);

                    time_t t = time(NULL);
                    struct tm now = *localtime(&t);
                    struct tm date = { .tm_mday = now.tm_mday + 7, .tm_mon = now.tm_mon, .tm_year = now.tm_year };
                    struct Time deadline;
                    deadline.day = date.tm_mday;
                    deadline.month = date.tm_mon;
                    deadline.year = date.tm_year;

                    struct Borrowing b;

                    b.deadline = deadline;
                    b.mahasiswa = mahasiswa;
                    b.late_charge = 0;

                    borrowing_list->list[borrowing_list->count] = b;

                    borrowing_list->count++;
                    return borrowing_list->list[borrowing_list->count];
                }
            } else {
                strcpy(error, OUT_OF_BOOK);
            }
        } else {
            strcpy(error, BOOK_NOT_FOUND);
        }
    };
}

• Get Borrowing

Mendapatkan detail peminjaman berdasarkan nomor peminjaman dan akan mengenerate denda jika telah melebihi batas waktu

Nomor peminjaman berdasarkan urutan array ke - n

struct Borrowing GetBorrowing(struct BorrowingList *borrowing_list, int id, char *error){
    if (id - 1 <= borrowing_list->count ) {
        
        time_t t = time(NULL);
        struct tm now = *localtime(&t);

        struct Time deadline = borrowing_list->list[id-1].deadline;
        if (now.tm_mday > deadline.day) {
            int number_of_days_late = now.tm_mday - deadline.day;
            borrowing_list->list[id-1].late_charge = number_of_days_late * LATE_CHARGE;
        }

        return borrowing_list->list[id-1];
    }

    strcpy(error, BORROWING_NOT_FOUND);
};

• Return Book

Fungsi untuk pengembalian buku dan akan mengenerate denda keterlambatan

struct Borrowing ReturnBorrowing(struct BorrowingList *borrowing_list, int id, char *error){
    if (id - 1 <= borrowing_list->count ) {
        
        time_t t = time(NULL);
        struct tm now = *localtime(&t);

        struct Time deadline = borrowing_list->list[id-1].deadline;
        if (now.tm_mday > deadline.day) {
            int number_of_days_late = now.tm_mday - deadline.day;
            borrowing_list->list[id-1].late_charge = number_of_days_late * LATE_CHARGE;
        }

        DeleteBorrowing(borrowing_list, id, error);

        return borrowing_list->list[id-1];
    }

    strcpy(error, BORROWING_NOT_FOUND);
};

• Delete Borrowing

Menghapus peminjaman

bool DeleteBorrowing(struct BorrowingList *borrowing_list, int id, char *error) {
    if (id - 1 <= borrowing_list->count) {
        for (int i = id; i < borrowing_list->count; i++) {
            borrowing_list->list[i - 1] = borrowing_list->list[i];
        }
        borrowing_list->count--;
        return true;
    }
    strcpy(error, BORROWING_NOT_FOUND);
    return false;
}