finished the project,only minor improvements left

Author: danielpetrov01

Diff for: Book.cpp

@@ -53,22 +53,22 @@ void Book::setId(const size_t _id)
 
 void Book::printBriefly() const
 {
-	std::cout << "Title: " << this->title << std::endl;
+	std::cout << "Title:  " << this->title << std::endl;
 	std::cout << "Author: " << this->author << std::endl;
-	std::cout << "Genre: " << this->genre << std::endl;
-	std::cout << "ID: " << this->id << std::endl;
+	std::cout << "Genre:  " << this->genre << std::endl;
+	std::cout << "ID:     " << this->id << std::endl;
 }
 
 void Book::printDetailed() const
 {
-	std::cout << "Title: " << this->title << std::endl;
-	std::cout << "Author: " << this->author << std::endl;
-	std::cout << "Genre: " << this->genre << std::endl;
+	std::cout << "Title:   " << this->title << std::endl;
+	std::cout << "Author:  " << this->author << std::endl;
+	std::cout << "Genre:   " << this->genre << std::endl;
 	std::cout << "Summary: " << this->summary << std::endl;
-	std::cout << "Tags: "; this->tags.print(); std::cout << std::endl;
-	std::cout << "Year: " << this->year << std::endl;
-	std::cout << "Rating: " << this->rating << std::endl;
-	std::cout << "ID: " << this->id << std::endl;
+	std::cout << "Tags:    "; this->tags.print(); std::cout << std::endl;
+	std::cout << "Year:    " << this->year << std::endl;
+	std::cout << "Rating:  " << this->rating << std::endl;
+	std::cout << "ID:      " << this->id << std::endl;
 }
 
 void Book::loadBook(std::istream& in)
@@ -125,4 +125,4 @@ const size_t& Book::getYear() const
 const double& Book::getRating() const
 {
 	return this->rating;
-}
+}

Diff for: Book.h

@@ -13,10 +13,13 @@ class Book
 	void setTags(const Vector<String>&);
 	void setRating(const double);
 	void setId(const size_t);
+
 	void printBriefly() const;
 	void printDetailed() const;
+
 	void loadBook(std::istream&);
 	void saveBook(std::ostream&) const;
+
 	size_t getID() const;
 	const String& getTitle() const; 
 	const String& getAuthor() const; 
@@ -32,4 +35,4 @@ class Book
 	size_t year;
 	double rating;
 	size_t id;
-};
+};

Diff for: BookStore.cpp

@@ -23,7 +23,8 @@ void BookStore::allBooksBrieflyInfo() const
 	for (size_t i = 0; i < size; ++i)
 	{
 		books[i].printBriefly();
-		std::cout << std::endl;
+		if(i != size - 1)
+			std::cout << std::endl;
 	}
 }
 
@@ -415,3 +416,9 @@ void BookStore::saveBooks(std::ofstream& out)
 		books[i].saveBook(out);
 	}
 }
+
+void BookStore::clear()
+{
+	BookStore clean;
+	*this = clean;
+}

Diff for: BookStore.h

@@ -13,9 +13,10 @@ class BookStore
 	void sortBooksDescending(const String&);
 	void addBook();
 	void removeBook(const String&);
+	void loadBooks(std::ifstream&,size_t);
+	void saveBooks(std::ofstream&);
 	size_t getSize() const;
-	void loadBooks(std::ifstream& in,size_t);
-	void saveBooks(std::ofstream& out);
+	void clear();
 private:
 	Vector<Book> books;
 	size_t total;

Diff for: CommandMenu.cpp

@@ -60,6 +60,12 @@ void CommandMenu::startLibrary()
 		}
 		case 1:
 		{
+			if (parameters.getSize() >= 1)
+			{
+				std::cout << "Invalid parameters count!\n";
+				break;
+			}
+			library.close();
 			break;
 		}
 		case 2:
@@ -74,6 +80,12 @@ void CommandMenu::startLibrary()
 		}
 		case 3:
 		{
+			if (parameters.getSize() >= 2 || parameters.getSize() <= 0)
+			{
+				std::cout << "Invalid parameters count!\n";
+				break;
+			}
+			library.saveAs(parameters[0]);
 			break;
 		}
 		case 4:
@@ -307,5 +319,4 @@ void CommandMenu::checkSecondCommand(String& command)
 {
 	if (command != "info" && command != "find" && command != "sort" && command != "add" && command != "remove" && command != "all" && command != "as")
 		this->theCommand.popBack();
-}
-
+}

Diff for: CommandMenu.h

@@ -18,5 +18,4 @@ class CommandMenu
 	Vector<String> theCommand;
 	Vector<String> parameters;
 	String command;
-};
-
+};

Diff for: Database2.txt

@@ -0,0 +1,30 @@
+1
+admin
+i<3c++
+1
+1
+2
+MyFirstBook
+iAmTheAuthor
+sci-fi
+A cool book about space
+4
+space
+war
+planets
+stars
+2021
+100
+1
+MySecondBook
+iAmTheAuthor
+adventure
+A cool book about dinosaurs
+4
+dino
+BC
+animals
+adventure
+2021
+100
+2

Diff for: Debug/Book.obj

@@ -1,5 +1,2 @@
-  BookStore.cpp
-D:\VisualStudio2019\ООП-Л\Course Project\Library\Library\BookStore.cpp(395,20): warning C4018: '<': signed/unsigned mismatch
-  Library.cpp
-  Generating Code...
+  Book.cpp
   Library.vcxproj -> D:\VisualStudio2019\ООП-Л\Course Project\Library\Debug\Library.exe

Diff for: Debug/BookStore.obj

@@ -26,8 +26,10 @@ void Library::open(const String& filename)
 		std::ifstream in(filename.getText());
 		in.seekg(std::ios::beg);
 		users.loadUsers(in);
+		if (users.getSize() == 0)
+			return;
 		size_t skip = users.getSize() * 4 + 1;
-		in.seekg(std::ios::beg);
+		in.seekg(0,std::ios::beg);
 		books.loadBooks(in,skip);
 		std::cout << "Database successfully loaded!\n";
 		this->FileName = filename;
@@ -54,6 +56,53 @@ void Library::save()
 	this->isChanged = false;
 }
 
+void Library::saveAs(const String& filename)
+{
+	if (!isOpened)
+	{
+		std::cout << "Open a file before executing any other commands!\n";
+		return;
+	}
+	size_t size = filename.getSize();
+	if (filename[size - 4] != '.' || filename[size - 3] != 't' || filename[size - 2] != 'x' || filename[size - 1] != 't')
+	{
+		std::cout << "File name must end with .txt !\n";
+		return;
+	}
+	this->FileName = filename;
+	this->save();
+}
+
+void Library::close()
+{
+	if (!isOpened)
+	{
+		std::cout << "Open a file before executing any other commands!\n";
+		return;
+	}
+	if (isChanged)
+	{
+		std::cout << "There are unsaved changes! Are you sure you want to exit?\n0 - Save&Close | 1 - Close : ";
+		bool choice = 0;
+		std::cin >> choice;
+		if (choice)
+		{
+			std::cin.ignore();
+			std::cout << "Successfully closed " << this->FileName << "!\n";
+			this->clear();
+			return;
+		}
+		std::cin.ignore();
+		this->save();
+		std::cout << "Successfully closed " << this->FileName << "!\n";
+		this->clear();
+		return;
+	}
+	std::cout << "Successfully closed " << this->FileName << "!\n";
+	this->clear();
+	this->isOpened = 0;
+}
+
 void Library::logIn()
 {
 	if (!isOpened)
@@ -133,24 +182,12 @@ void Library::logOut()
 
 void Library::exit()
 {
-	if (isChanged)
+	if (users.activeUserIndex() == -1)
 	{
-		std::cout << "There are unsaved changes! Are you sure you want to exit?\n0 - Save&Exit | 1 - Exit : ";
-		bool choice = 0;
-		std::cin >> choice;
-		if (choice)
-		{
-			std::cin.ignore();
-			std::cout << "Good bye!\n";
-			return;
-		}
-		std::cin.ignore();
-		this->save();
 		std::cout << "Good bye!\n";
 		return;
-	}
-	std::cout << "Good bye!\n";
-	return;
+	}			
+	std::cout << "Good bye " << users[users.activeUserIndex()].getName() << "!\n";
 }
 
 void Library::help() const
@@ -360,3 +397,11 @@ User& Library::activeUser()
 {
 	return users[users.activeUserIndex()];
 }
+
+void Library::clear()
+{
+	this->users.clear();
+	this->books.clear();
+	this->isOpened = false;
+	this->FileName = "";
+}

Diff for: Debug/CommandMenu.obj

@@ -22,7 +22,7 @@ class Library
 	void booksRemove(const String&);
 	void usersAdd(const String&, const String&);
 	void usersRemove(String&);
-
+	void clear();
 	User& activeUser();
 private:
 	UserStore users;
@@ -31,5 +31,4 @@ class Library
 	bool isSaved;
 	bool isChanged;
 	String FileName;
-};
-
+};

Diff for: Debug/Library.log

@@ -11,5 +11,6 @@ int main()
 
     CommandMenu menu;
     menu.startLibrary();
+
     return 0;
 }

Diff for: Debug/Library.obj

@@ -91,4 +91,4 @@ User& User::operator=(const User& other)
 		this->isLoggedIn = other.isLoggedIn;
 	}
 	return *this;
-}
+}

Diff for: Debug/Library.tlog/CL.command.1.tlog

@@ -5,18 +5,22 @@ class User
 public:
 	User();
 	User(String&, String&);
+
 	String getName() const;
-	void setName(const String&);
 	String getPassword() const;
-	void setPassword(const String&);
 	bool getAdmin() const;
 	bool getLoggedIn() const;
+
+	void setPassword(const String&);
+	void setName(const String&);
 	void setLoggedIn(const bool);
 	void setAdmin(const bool);
+
 	void loadUser(std::ifstream&);
 	void saveUser(std::ostream&) const;
+
 	bool operator==(const User&);
-	User& operator=(const User& other);
+	User& operator=(const User&);
 private:
 	String name;
 	String password;