Initial commit

BooksApp/Books/Program.cs

@@ -0,0 +1,70 @@
+using System.Text;
+using Books;
+using Spectre.Console;
+
+Console.OutputEncoding = Encoding.UTF8;
+
+const string CsvChoice = "csv";
+const string WebChoice = "web";
+const string AuthorChoice = "author";
+const string PublisherChoice = "publisher";
+const string YearChoice = "year";
+const string AscChoice = "asc";
+const string DescChoice = "desc";
+
+AnsiConsole.Write(new FigletText("BOOKS")
+                  .Centered()
+                  .Color(Color.Red));
+
+string source = AnsiConsole.Prompt(new SelectionPrompt<string>()
+                                   .Title("Please choose the source of books")
+                                   .AddChoices(CsvChoice, WebChoice));
+
+string filter = AnsiConsole.Prompt(new SelectionPrompt<string>()
+                                   .Title("Please choose the filter type")
+                                   .AddChoices(AuthorChoice, PublisherChoice, YearChoice));
+
+string? filterValue = null;
+int filterYear = -1;
+string order = AscChoice;
+if (filter == YearChoice)
+{
+    do
+    {
+        filterYear = AnsiConsole.Ask<int>("Please enter the year (4 digits, 0-2100):");
+    } while (filterYear is < 0 or > 2100);
+}
+else
+{
+    filterValue = AnsiConsole.Ask<string>($"Please enter the {filter}:");
+    order = AnsiConsole.Prompt(new SelectionPrompt<string>()
+                               .Title("Please choose the order")
+                               .AddChoices(AscChoice, DescChoice));
+}
+
+var bookStore = new BookStore(source == CsvChoice ? LoaderType.Csv : LoaderType.Web, true);
+bool descending = order == DescChoice;
+IReadOnlyCollection<Book> results = filter switch
+                                    {
+                                        AuthorChoice when filterValue is not null => await bookStore
+                                            .GetBooksByAuthorAsync(filterValue, descending),
+                                        PublisherChoice when filterValue is not null => await bookStore
+                                            .GetBooksByPublisherAsync(filterValue, descending),
+                                        YearChoice => await bookStore.GetBooksByYearAsync(filterYear),
+                                        _          => throw new ArgumentOutOfRangeException(nameof(filter))
+                                    };
+
+var table = new Table()
+            .AddColumn("Title")
+            .AddColumn("Author")
+            .AddColumn("Publisher")
+            .AddColumn("Year")
+            .AddColumn("ISBN");
+
+foreach (var book in results)
+{
+    table.AddRow(book.Title, book.Author, book.Publisher, book.Year.ToString(), book.ISBN);
+}
+
+AnsiConsole.Write(table);
+Console.ReadKey();