feat(Week07): Add solutions

1 files changed, 264 insertions, 0 deletions

diff --git a/Week07/Exercise01/OnlineLibrary.cpp b/Week07/Exercise01/OnlineLibrary.cpp
new file mode 100644
index 0000000..495ee95
--- /dev/null
+++ b/Week07/Exercise01/OnlineLibrary.cpp
@@ -0,0 +1,264 @@
+#include "OnlineLibrary.h"
+#include <iostream>
+
+void OnlineLibrary::free() {
+	delete[] books;
+	delete[] users;
+	delete[] librarians;
+	delete[] connections;
+}
+
+void OnlineLibrary::copyFrom(const OnlineLibrary& other) {
+	booksCount = other.booksCount;
+	booksAlloc = other.booksAlloc;
+	books = new Book[booksAlloc];
+	for (unsigned i = 0; i < booksCount; ++i)
+		books[i] = other.books[i];
+
+	usersCount = other.usersCount;
+	usersAlloc = other.usersAlloc;
+	users = new User[usersAlloc];
+	for (unsigned i = 0; i < usersCount; ++i)
+		users[i] = other.users[i];
+
+	librariansCount = other.librariansCount;
+	librariansAlloc = other.librariansAlloc;
+	librarians = new Librarian[librariansAlloc];
+	for (unsigned i = 0; i < librariansCount; ++i)
+		librarians[i] = other.librarians[i];
+
+	connectionsCount = other.connectionsCount;
+	connectionsAlloc = other.connectionsAlloc;
+	connections = new TransactionConnection[connectionsAlloc];
+	for (unsigned i = 0; i < connectionsCount; ++i)
+		connections[i] = other.connections[i];
+}
+
+void OnlineLibrary::resizeBooks() {
+	booksAlloc = booksAlloc == 0 ? 8 : booksAlloc * 2;
+	Book* booksLarger = new Book[booksAlloc];
+
+	for (unsigned i = 0; i < booksCount; ++i)
+		booksLarger[i] = books[i];
+
+	delete[] books;
+	books = booksLarger;
+}
+
+void OnlineLibrary::resizeUsers() {
+	usersAlloc = usersAlloc == 0 ? 8 : usersAlloc * 2;
+	User* usersLarger = new User[usersAlloc];
+
+	for (unsigned i = 0; i < usersCount; ++i)
+		usersLarger[i] = users[i];
+
+	delete[] users;
+	users = usersLarger;
+}
+
+void OnlineLibrary::resizeLibrarians() {
+	librariansAlloc = librariansAlloc == 0 ? 8 : librariansAlloc * 2;
+	Librarian* librariansLarger = new Librarian[librariansAlloc];
+
+	for (unsigned i = 0; i < librariansCount; ++i)
+		librariansLarger[i] = librarians[i];
+
+	delete[] librarians;
+	librarians = librariansLarger;
+}
+
+void OnlineLibrary::resizeConnections() {
+	connectionsAlloc = connectionsAlloc == 0 ? 8 : connectionsAlloc * 2;
+	TransactionConnection* connectionsLarger = new TransactionConnection[connectionsAlloc];
+
+	for (unsigned i = 0; i < connectionsCount; ++i)
+		connectionsLarger[i] = connections[i];
+
+	delete[] connections;
+	connections = connectionsLarger;
+}
+
+OnlineLibrary::OnlineLibrary() {
+	books = nullptr;
+	booksCount = booksAlloc = 0;
+	users = nullptr;
+	usersCount = usersAlloc = 0;
+	librarians = nullptr;
+	librariansCount = librariansAlloc = 0;
+	connections = nullptr;
+	connectionsCount = connectionsAlloc = 0;
+}
+
+OnlineLibrary::~OnlineLibrary() {
+	free();
+}
+
+OnlineLibrary::OnlineLibrary(const OnlineLibrary& other) {
+	copyFrom(other);
+}
+
+OnlineLibrary& OnlineLibrary::operator=(const OnlineLibrary& other) {
+	if (this != &other) {
+		free();
+		copyFrom(other);
+	}
+	return *this;
+}
+
+OnlineLibrary::OnlineLibrary(OnlineLibrary&& other) {
+	books = other.books;
+	booksCount = other.booksCount;
+	booksAlloc = other.booksAlloc;
+
+	users = other.users;
+	usersCount = other.usersCount;
+	usersAlloc = other.usersAlloc;
+
+	librarians = other.librarians;
+	librariansCount = other.librariansCount;
+	librariansAlloc = other.librariansAlloc;
+
+	connections = other.connections;
+	connectionsCount = other.connectionsCount;
+	connectionsAlloc = other.connectionsAlloc;
+
+	other.books = nullptr;
+	other.booksCount = other.booksAlloc = 0;
+
+	other.users = nullptr;
+	other.usersCount = other.usersAlloc = 0;
+
+	other.librarians = nullptr;
+	other.librariansCount = other.librariansAlloc = 0;
+
+	other.connections = nullptr;
+	other.connectionsCount = other.connectionsAlloc = 0;
+}
+
+OnlineLibrary& OnlineLibrary::operator=(OnlineLibrary&& other) {
+	if (this != &other) {
+		free();
+
+		books = other.books;
+		booksCount = other.booksCount;
+		booksAlloc = other.booksAlloc;
+
+		users = other.users;
+		usersCount = other.usersCount;
+		usersAlloc = other.usersAlloc;
+
+		librarians = other.librarians;
+		librariansCount = other.librariansCount;
+		librariansAlloc = other.librariansAlloc;
+
+		connections = other.connections;
+		connectionsCount = other.connectionsCount;
+		connectionsAlloc = other.connectionsAlloc;
+
+		other.books = nullptr;
+		other.booksCount = other.booksAlloc = 0;
+
+		other.users = nullptr;
+		other.usersCount = other.usersAlloc = 0;
+
+		other.librarians = nullptr;
+		other.librariansCount = other.librariansAlloc = 0;
+
+		other.connections = nullptr;
+		other.connectionsCount = other.connectionsAlloc = 0;
+	}
+	return *this;
+}
+
+void OnlineLibrary::RegisterUser(const User& user) {
+	if (usersCount >= usersAlloc)
+		resizeUsers();
+	users[usersCount++] = user;
+}
+
+User* OnlineLibrary::LoginUser(const String& email, const String& password) {
+	for (unsigned i = 0; i < usersCount; ++i) {
+		if (users[i].Login(email, password))
+			// "users + i" е същото като "&users[i]"
+			return users + i;
+	}
+	return nullptr;
+}
+
+void OnlineLibrary::RegisterLibrarian(const Librarian& librarian) {
+	if (librariansCount >= librariansAlloc)
+		resizeLibrarians();
+	librarians[librariansCount++] = librarian;
+}
+
+Librarian* OnlineLibrary::LoginLibrarian(unsigned librarianNumber, const String& password) {
+	for (unsigned i = 0; i < librariansCount; ++i) {
+		if (librarians[i].Login(librarianNumber, password))
+			// "librarians + i" е същото като "&librarians[i]"
+			return librarians + i;
+	}
+	return nullptr;
+}
+
+void OnlineLibrary::ListBooks() const {
+	for (unsigned i = 0; i < booksCount; ++i) {
+		if (books[i].GetAvailableForPurchase()) {
+			std::cout << '[' << i << "] ";
+			books[i].PrintBookInfo();
+		}
+	}
+}
+
+Book* OnlineLibrary::GetBook(unsigned index) {
+	if (index >= booksCount)
+		return nullptr;
+	// "books + index" е същото като "&books[index]"
+	return books + index;
+}
+
+void OnlineLibrary::AddBook(const Book& book) {
+	if (booksCount >= booksAlloc)
+		resizeBooks();
+	books[booksCount++] = book;
+}
+
+void OnlineLibrary::PurchaseBook(const Book& book, const User& user, LibraryBanking& banking) {
+	if (connectionsCount >= connectionsAlloc)
+		resizeConnections();
+
+	TransactionConnection tc;
+	tc.user = &user;
+	tc.book = &book;
+	tc.transaction = banking.RegisterTransaction(Transaction(book.GetPrice(), user.GetBankCard()));
+
+	connections[connectionsCount++] = tc;
+}
+
+void OnlineLibrary::ListTransactions(const User& user) const {
+	for (unsigned i = 0; i < connectionsCount; ++i) {
+		if (connections[i].user == &user) {
+			std::cout << connections[i].book->GetTitle().GetStr() << ", "
+				<< connections[i].book->GetAuthor().GetStr() << " Price:"
+				<< connections[i].book->GetPrice() << " Card:"
+				<< connections[i].transaction->GetBankCard() << " Status:"
+				<< connections[i].transaction->GetStatusStr().GetStr() << std::endl;
+		}
+	}
+}
+
+void OnlineLibrary::ExportTransactions(const User& user, const String& fileName) const {
+	std::ofstream exportFile(fileName.GetStr(), std::ios::trunc);
+
+	if (!exportFile.is_open()) {
+		std::cout << "Couldn't open export file!" << std::endl;
+	}
+	else {
+		for (unsigned i = 0; i < connectionsCount; ++i) {
+			if (connections[i].user == &user) {
+				exportFile << i << ','
+					<< connections[i].book->GetTitle().GetStr() << ',';
+				connections[i].transaction->Export(exportFile);
+			}
+		}
+	}
+}