def validateRental(ghostBook, ghostClient):
inBookList = False
repoCaller = Repo()
listOfBooks = repoCaller.getListOfBooks()
listOfRentedBooks = repoCaller.getListOfRentals()
listOfClients = repoCaller.getListOfClients()
for iterator in listOfBooks:
if Book.getBookId(iterator) == Book.getBookId(ghostBook):
inBookList = True
break
if inBookList == False:
raise BookAlreadyRentedOrDoesntExistError
# bookIsRented=True
for books in listOfRentedBooks:
if Book.getBookId(ghostBook) == Rental.getBookId(
books) and Rental.getReturnDate(books) == "notRented":
for iterator in listOfRentedBooks:
if Book.getBookId(iterator) == Book.getBookId(ghostBook):
raise BookAlreadyRentedOrDoesntExistError
clientFound = False
for iterator in listOfClients:
if Client.getClientId(iterator) == Client.getClientId(ghostClient):
clientFound = True
if clientFound == False:
raise ClientAlreadyExistsError
def updateAClient(commandInPieces):
# updates a client that is already in the repository
# input - details about the client to be updated (id) and the values that must be edited
repoCaller = Repo()
listOfClients = repoCaller.getListOfClients()
idToUpdate = commandInPieces[1]
newId = commandInPieces[2]
newName = commandInPieces[3]
updatedClient = Client(newId, newName)
position = 0
try:
validateAClient(updatedClient)
for iterator in listOfClients:
if Client.getClientId(iterator) == idToUpdate:
if commandInPieces[0] != "undo":
undoFunction = Undo("updateC", [
"undo", newId,
Client.getClientId(iterator),
Client.getClientName(iterator), "undo",
Client.getClientId(iterator), newId, newName
])
repoCaller.addToListOfOperations(undoFunction)
repoCaller.setRedoFalse()
repoCaller.removeClientFromPosition(position)
repoCaller.insertClientIntoPosition(position, updatedClient)
repoCaller.loadIntoFiles()
repoCaller.loadIntoPickle()
break
position += 1
except ClientAlreadyExistsError:
print(ClientAlreadyExistsError())
return False
def validateAClient(newClient):
# checks if a client is already registred
# input - instance of a client
clientCaller = Client
repoCaller = Repo()
listOfClients = repoCaller.getListOfClients()
for iterator in listOfClients:
if clientCaller.getClientId(iterator) == clientCaller.getClientId(
newClient):
raise ClientAlreadyExistsError
def listAllClients(commandInPieces):
# lists clients in repository
# input - not important / not used
repoCaller = Repo()
listOfClients = repoCaller.getListOfClients()
s = ""
s += "Clients: \n"
for iterator in listOfClients:
s += Client.clientToString(iterator) + "\n"
return s
def searchAClient(commandInPieces):
repoCaller = Repo()
keyToSearch = commandInPieces[1]
listOfClients = repoCaller.getListOfClients()
s = ""
s += "Clients: \n"
for client in listOfClients:
if keyToSearch.lower() == Client.getClientId(client).lower():
s += Client.clientToString(client) + "\n"
elif keyToSearch.lower() == Client.getClientName(client).lower():
s += Client.clientToString(client) + "\n"
return s
def showStatistics(null):
repoCaller = Repo()
listOfRentedBooks = repoCaller.getListOfRentals()
mostRentedBooks = repoCaller.getListOfMostRentedBooks()
mostRentedAuthors = repoCaller.getListOfMostRentedAuthors()
mostActiveClients = repoCaller.getListOfMostActiveClients()
listOfBooks = repoCaller.getListOfBooks()
listOfClients = repoCaller.getListOfClients()
booksStatistics = "Books statistic:\n"
authorStatistics = "Author statistics:\n"
clientsStatistics = "Clients statistics:\n"
for rentedBooks in listOfRentedBooks:
try:
mostRentedAuthors[Rental.getBookId(rentedBooks)] += 1
except KeyError:
mostRentedAuthors[Rental.getBookId(rentedBooks)] = 1
for rentedBooks in listOfRentedBooks:
try:
mostRentedBooks[Rental.getBookId(rentedBooks)] += 1
except KeyError:
mostRentedBooks[Rental.getBookId(rentedBooks)] = 1
mostRentedAuthorsList = sorted(mostRentedAuthors.items(),
key=lambda x: x[1],
reverse=True)
mostRentedBooksList = sorted(mostRentedBooks.items(),
key=lambda x: x[1],
reverse=True)
for rentedBooks in mostRentedBooksList:
booksStatistics += "Id of book: " + str(
rentedBooks[0]) + " Rented: " + str(
rentedBooks[1]) + " times" + "\n"
for rentedBooks in mostRentedAuthorsList:
for books in listOfBooks:
if (Book.getBookId(books) == rentedBooks[0]):
authorStatistics += "Author: " + str(
Book.getBookAuthor(books)) + " Rented: " + str(
rentedBooks[1]) + " times" + "\n"
for client in listOfClients:
total = 0
for rent in listOfRentedBooks:
if Client.getClientId(client) == Rental.getClientId(
rent) and rent.getReturnDate() != "notReturned":
difference = Rental.getReturnDate(rent) - Rental.getRentDate(
rent)
total += difference.total_seconds() / 86400
try:
mostActiveClients[Client.getClientName(client)] += total
except KeyError:
repoCaller.addToMostActiveClients(client, total)
mostActiveClientsList = sorted(mostActiveClients.items(),
key=lambda x: x[1],
reverse=True)
for client in mostActiveClientsList:
clientsStatistics += "Name: " + str(
client[0]) + " Total rental days: " + str(client[1]) + "\n"
return [booksStatistics, authorStatistics, clientsStatistics]
