/// <summary>
/// Loads all collections that are kept in the specified file.
/// </summary>
/// <param name="fileName">The file name to be used during loading.</param>
public void LoadStorage(string fileName)
{
if (string.IsNullOrWhiteSpace(fileName))
{
throw new ArgumentException("No file name has been supplied.");
}
using (FileStream fileStream = new FileStream(fileName, FileMode.Open))
{
using (BinaryReader binReader = new BinaryReader(fileStream))
{
this.storage = new Dictionary <string, BookListService>();
int collectionsCount = binReader.ReadInt32();
while (collectionsCount-- > 0)
{
string bookListName = binReader.ReadString();
var bookList = new BookListService(bookListName);
int booksCount = binReader.ReadInt32();
while (booksCount-- > 0)
{
string isbn = binReader.ReadString();
var book = new Book(isbn)
{
Author = binReader.ReadString(),
Title = binReader.ReadString(),
Publisher = binReader.ReadString(),
Year = binReader.ReadInt32(),
PageCount = binReader.ReadInt32(),
Price = binReader.ReadDecimal(),
};
bookList.AddBook(book);
}
this.storage.Add(bookList.Name, bookList);
}
}
}
}
/// <summary>
/// Adds a collection into the storage.
/// </summary>
/// <param name="bookList">The collection to be stored.</param>
/// <returns>true or false to indicate the result of the operation, and the corresponding message.</returns>
public (bool, string) AddBookList(BookListService bookList)
{
if (bookList is null)
{
return(false, "No collection to storage.");
}
if (this.storage is null)
{
this.storage = new Dictionary <string, BookListService>();
}
else if (this.storage.ContainsKey(bookList.Name))
{
this.storage.Remove(bookList.Name);
}
this.storage.Add(bookList.Name, bookList);
return(true, $"The collection {bookList.Name} has been storaged.");
}
/// <summary>
/// The assembly entry point.
/// </summary>
public static void Main()
{
Console.WriteLine("EPAM training, winter 2019.");
Console.WriteLine("Day 10 Homework demonstration.");
Console.WriteLine("By Yuri Shevchenko.\n");
var list1 = new BookListService("Classics");
Console.WriteLine($"Collection {list1.Name} with {list1.Count} books has been created.");
var list2 = new BookListService("Romance");
Console.WriteLine($"Collection {list2.Name} with {list2.Count} books has been created.");
var book11 = new Book("B0064CPN7I")
{
Author = "Ray Bradbury",
Title = "Fahrenheit 451",
Publisher = "Simon & Schuster",
Year = 2011,
PageCount = 194,
Price = 9.45M,
};
var book12 = new Book("B003JTHWKU")
{
Author = "George Orwell",
Title = "1984",
Publisher = "Houghton Mifflin Harcourt",
Year = 2013,
PageCount = 237,
Price = 8.65M,
};
var book13 = new Book("0684830493")
{
Author = "Ernest Hemingway",
Title = "The Old Man and the Sea",
Publisher = "Scribner",
Year = 1996,
PageCount = 132,
Price = 12.79M,
};
var book14 = new Book("0060929871")
{
Author = "Aldous Huxley",
Title = "Brave New World",
Publisher = "HarperPerennial",
Year = 1998,
PageCount = 288,
Price = 5.98M,
};
var book15 = new Book("0340839937")
{
Author = "Frank Herbert",
Title = "Dune",
Publisher = "Hodder & Stoughton",
Year = 2006,
PageCount = 604,
Price = 34.13M,
};
var book16 = new Book("0553803719")
{
Author = "Isaac Asimov",
Title = "Foundation",
Publisher = "Bantam",
Year = 2004,
PageCount = 244,
Price = 3.75M,
};
var book21 = new Book("0451490827")
{
Author = "Helen Hoang",
Title = "The Bride Test",
Publisher = "Berkley",
Year = 2019,
PageCount = 296,
Price = 7.76M,
};
var book22 = new Book("1250047323")
{
Author = "Katherine Center",
Title = "Things You Save in a Fire",
Publisher = "St. Martin's Press",
Year = 2019,
PageCount = 320,
Price = 17.7M,
};
var book23 = new Book("9781250295637")
{
Author = "Beth O'Leary",
Title = "The Flatshare",
Publisher = "Flatiron Books",
Year = 2019,
PageCount = 325,
Price = 13.99M,
};
Console.WriteLine();
try
{
list1.AddBook(book11);
list1.AddBook(book12);
list1.AddBook(book13);
list1.AddBook(book14);
list1.AddBook(book15);
list1.AddBook(book16);
}
catch (ArgumentException ex)
{
Console.WriteLine(ex.Message);
return;
}
Console.WriteLine($"{list1.Count} books were added to {list1.Name} collection.");
try
{
list2.AddBook(book21);
list2.AddBook(book22);
list2.AddBook(book23);
}
catch (ArgumentException ex)
{
Console.WriteLine(ex.Message);
return;
}
Console.WriteLine($"{list2.Count} books were added to {list2.Name} collection.");
Console.WriteLine($"\nThe {list1.Name} collection sorted by author:");
list1.SortBooksByTag(BookListService.SortBy.Author);
ShowCollection(list1.GetList());
Console.WriteLine($"\nThe {list1.Name} collection sorted by title:");
list1.SortBooksByTag(BookListService.SortBy.Title);
ShowCollection(list1.GetList());
Console.WriteLine($"\nThe {list1.Name} collection sorted by year:");
list1.SortBooksByTag(BookListService.SortBy.Year);
ShowCollection(list1.GetList());
Console.WriteLine($"\nFind books by title: 'a'");
ShowCollection(list1.FindBookByTag(BookListService.SearchBy.Title, "a"));
Console.WriteLine($"\nFind books by author: 'h'");
ShowCollection(list1.FindBookByTag(BookListService.SearchBy.Author, "h"));
Console.WriteLine();
Console.WriteLine(storage.AddBookList(list1).Item2);
Console.WriteLine(storage.AddBookList(list2).Item2);
Console.WriteLine($"Storage has {storage.Count} collections.");
try
{
storage.SaveStorage("storage");
Console.WriteLine("\nStorage has been successfully saved to a file.");
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
Console.WriteLine();
Console.WriteLine(storage.RemoveBookList(list1.Name).Item2);
Console.WriteLine(storage.RemoveBookList(list2.Name).Item2);
Console.WriteLine($"Storage has {storage.Count} collections.");
try
{
storage.LoadStorage("storage");
Console.WriteLine("\nStorage has been successfully loaded from a file.");
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
foreach (var collection in Program.storage.GetCollections())
{
Console.WriteLine($"\nCollection {collection.Name}:");
collection.SortBooksByTag(BookListService.SortBy.Author);
ShowCollection(collection.GetList());
}
Console.WriteLine("\nThank you for your attention!");
Console.ReadKey();
}
