using System; using System.Collections.Generic; using BuecherwurmAPI.Models; using Microsoft.Data.Sqlite; using Microsoft.VisualBasic.CompilerServices; namespace BuecherwurmAPI.Models { internal class Katalog : IBookRepo { private SqliteConnection _dbConnection; public Katalog() { var connectionBuilder = new SqliteConnectionStringBuilder {DataSource = "LongWormMemory.db"}; _dbConnection = new SqliteConnection(connectionBuilder.ConnectionString); _dbConnection.Open(); } public IEnumerable GetAllBooks() { var books= new List(); using (var command = _dbConnection.CreateCommand()) { command.CommandText = @"SELECT * FROM Books"; var dataReader = command.ExecuteReader(); while (dataReader.Read()) { books.Add(new Book { Name = (string) dataReader["Books"], Author = (string) dataReader["Author"], Country = (string) dataReader["Country"], Link = (string) dataReader["Link"], Language = (string) dataReader["Language"], Pages = (long) dataReader["Pages"], Year = (long) dataReader["Year"], ProductId = (long) dataReader["ProductId"], Category = (CategoryEnum) dataReader["Category"], ImageLink = (string) dataReader["ImageLink"], LendTime = (long) dataReader["LendTime"], LendType = (LendTypeEnum) dataReader["LendType"] }); } } return books; } public Book GetBookById(long id) { using (var command = _dbConnection.CreateCommand()) { command.Parameters.Add(new SqliteParameter("@id", SqliteType.Integer)).Value = id; command.CommandText = @"SELECT * FROM Books WHERE ProductId = @id"; var dataReader = command.ExecuteReader(); var book = new Book { Name = (string) dataReader["Books"], Author = (string) dataReader["Author"], Country = (string) dataReader["Country"], Link = (string) dataReader["Link"], Language = (string) dataReader["Language"], Pages = (long) dataReader["Pages"], Year = (long) dataReader["Year"], ProductId = (long) dataReader["ProductId"], Category = (CategoryEnum) dataReader["Category"], ImageLink = (string) dataReader["ImageLink"], LendTime = (long) dataReader["LendTime"], LendType = (LendTypeEnum) dataReader["LendType"] }; return book; } } public void DeleteBook(long id) { using (var command = _dbConnection.CreateCommand()) { // funktioniert das so? command.Parameters.Add(new SqliteParameter("@id", SqliteType.Integer)).Value = id; command.CommandText = @"DELETE * FROM Books WHERE ProductId= @id"; var dataReader = command.ExecuteReader(); } } public void AddBook (Book book) { using (var command = _dbConnection.CreateCommand()) { // funktioniert das so? command.CommandText = @"INSERT INTO Books (Name, Author, Country, Link, Language, Pages, Year, ProductId, Category, ImageLink, LendTime, LendType) VALUES (book.Name, book.Author, book.Contry, book.Link, book.Language, book.Pages, book.Year, book.ProductId, book.Category, book.ImageLink, book.LendTime, book.LendType)"; command.Parameters.Add(new SqliteParameter("@itemId", lend.ItemId)); command.Parameters.Add(new SqliteParameter("@returnDate", lend.ReturnDate)); command.Parameters.Add(new SqliteParameter("@customer", lend.Customer)); var success = command.ExecuteNonQuery(); if (success == 1) { command.CommandText = @"SELECT last_insert_rowid()"; return (long)command.ExecuteScalar(); } return -1; } } public void EditBook (long id, Book book) { using (var command = _dbConnection.CreateCommand()) { // funktioniert das so? command.Parameters.Add(new SqliteParameter("@id", SqliteType.Integer)).Value = id; command.CommandText = @"INSERT INTO Books (Name, Author, Country, Link, Language, Pages, Year, ProductId, Category, ImageLink, LendTime, LendType)VALUES (book.Name, book.Author, book.Contry, book.Link, book.Language, book.Pages, book.Year, book.ProductId, book.Category, book.ImageLink, book.LendTime, book.LendType) WHERE ProductId = @id"; var dataReader = command.ExecuteReader(); } } } }