from random import randint


class Reader:
    def __init__(self, name, sname, budget):
        self.name = name
        self.sname = sname
        self.books = {}
        self.libraries = []
        self.budget = budget
        self.member_id = []

    @property
    def fullname(self):
        return f"{self.name} {self.sname}"

    @property
    def read_books(self):
        if self.books:
            res = ""
            for lib in self.libraries:
                if lib in self.books.values():
                    x = f"{self.fullname} reads {', '.join(book.name for book in self.books if self.books[book] == lib)} from {lib.name} library\n"
                else:
                    x = f"{self.fullname} does not read any book from {lib.name}\n"
                res += x
            return res
        return f"{self.fullname} does not read any book currently"

    def take_book(self, library, book):
        if book not in self.books and book in library.books and self.budget >= book.price and self in library.members:
            self.books[book] = library
            self.budget -= book.price
            library.budget += book.price
            library.books.remove(book)
        else:
            print(f"{self.fullname} cannot take {book.name} from {library.name}")

    def return_book(self, library, book):
        if book in self.books:
            if book not in library.books and library in book.libraries:
                del self.books[book]
                book.reader = None
                library.books.append(book)
            else:
                print("Book does not belong to this library")
        else:
            print(f"{self.fullname} did not take {book.name} from {library.name}")

    def buy_membership(self, library):
        if library.membership_price <= self.budget:
            self.budget -= library.membership_price
            self.member_id.append(library.create_id())
            library.add_member(self)
            self.libraries.append(library)


class Library:
    def __init__(self, name, books, budget, membership_price):
        self.name = name
        self.books = books
        self.budget = budget
        self.membership_price = membership_price
        self.members = []
        for b in books:
            b.libraries.append(self)

    def info(self):
        for b in self.books:
            if b.reader:
                print(f"{b.name} is being read by {b.reader.fullname}")
            else:
                print(f"{b.name} is available now")

    @property
    def available_books(self):
        if self.books:
            return f"{', '.join(b.name for b in self.books if b in self.books)} available at {self.name}"
        return f"{self.name} has no available books"

    def add_book(self, book):
        self.books.append(book)
        self.budget -= book.price
        book.libraries.append(self)

    def sell_book(self, book):
        if book in self.books and self in book.libraries and book in self.books:
            self.books.remove(book)
            self.budget += book.price
            book.libraries.remove(self)
        else:
            print(f"{self.name} cannot sell this book")

    def add_member(self, reader):
        self.budget += self.membership_price
        self.members.append(reader)

    def create_id(self):
        idd = self.name[:2].upper()
        for i in range(8):
            idd += str(randint(0, 10))
        idd += self.name[-1].upper()
        return idd


class Book:
    def __init__(self, name, author, price):
        self.name = name
        self.author = author
        self.price = price
        self.libraries = []


sefiller = Book("Sefiller", "Victor Hugo", 10)
inferno = Book("Inferno", "Dan Brown", 7)
kapital = Book("Kapital", "Karl Marx", 9)
ana = Book("Ana", "Maksim Gorki", 50)
sapiens = Book("Sapiens", "Yuval Noah Harari", 25)
childhood = Book("Childhood", "Lev Tolstoy", 20)
kitab = Book("Kitab", "A Person", 50)

bakixanov = Library("Bakixanov", [sefiller, inferno, kapital, ana, kitab], 1000, 15)
bakumoz = Library("Bakumoz", [ana, kapital, sapiens], 400, 25)
building = Library("Building", [inferno, sefiller, kapital], 200, 26)

vusala = Reader("Vusala", "Alakbarova", 150)
vusal = Reader("Vusal", "Alakbarov", 120)

vusala.buy_membership(bakixanov)
vusala.buy_membership(bakumoz)
vusal.buy_membership(bakumoz)
print()
vusala.take_book(bakixanov, kapital)
vusal.return_book(bakumoz, kapital)
print()
vusala.take_book(building, sefiller)
print()
print(bakixanov.available_books)
bakixanov.add_book(childhood)
print(bakixanov.available_books)
bakixanov.sell_book(childhood)
print(bakixanov.available_books)