library object oriented design

from abc import ABC, abstractmethod


class Item(ABC):
    def __init__(self):
        pass


class Book(Item):
    def __init__(self, title, author, genre, publish_date):
        self.title = title
        self.author = author
        self.genre = genre
        self.publish_date = publish_date


class BookCopy(Book):
    def __init__(self, title, author, genre, publish_date, copy_id):
        super().__init__(title, author, genre, publish_date)
        self.copy_id = copy_id
        self.is_reserved = False
        self.is_rented = False


class InvertedIndex:
    def __init__(self):
        pass

    def construct_index(self):
        pass

    def add_book_to_index(self):
        pass


class Rack:
    def __init__(self, capacity, rack_id):
        self.capacity = capacity
        self.rack_id = rack_id
        self.rack_spot_map = {}

    def store_book_copy(self, book_copy):
        available_spot = self.get_available_spot()
        available_spot.store(book_copy)
        self.rack_spot_map[book_copy.copy_id] = available_spot.rack_spot_id

    def get_available_spot(self):
        return


class Inventory:
    def __init__(self):
        pass

    def add_book_copies(self, copies):
        pass

    def search_book(self, parameters):
        pass


class RentalHistory:
    def __init__(self):
        # member, copy, checkout, expected return, actual return
        pass


class Transactions:
    def __init__(self):
        # transactionId, memberid, transaction, amount_change, total_amount
        pass


class Member:
    def __init__(self, name, member_id):
        self.name = name
        self.member_id = member_id
        self.books_rented = []
        # memberid, name, books rented

    def search_book(self, parameters):
        pass

    def rent_book(self, book):
        pass

    def reserve_book(self, book):
        pass


class IdGeneratorService:
    def generate(self):
        import time
        return time.time()


class Library:
    def __init__(self, name):
        self.name = name
        self.inventory = Inventory()
        self.transactions = Transactions()
        self.rentalHistory = RentalHistory()
        print("Hi Welcome to library")

    def search_book(self, parameters):
        return self.inventory.search_book(parameters)