/// <summary>
/// Creates a new product with default values
/// </summary>
/// <returns></returns>
internal Product Create()
{
Product product = new Product
{
ReleaseDate = DateTime.Now
};
return product;
}
/// <summary>
/// Saves a new product.
/// </summary>
/// <param name="product"></param>
/// <returns></returns>
internal Product Save(Product product)
{
// Read in the existing products
var products = this.Retrieve();
// Assign a new Id
var maxId = products.Max(p => p.ProductId);
product.ProductId = maxId + 1;
products.Add(product);
WriteData(products);
return product;
}
/// <summary>
/// Updates an existing product
/// </summary>
/// <param name="id"></param>
/// <param name="product"></param>
/// <returns></returns>
internal Product Save(int id, Product product)
{
// Read in the existing products
var products = this.Retrieve();
// Locate and replace the item
var itemIndex = products.FindIndex(p => p.ProductId == product.ProductId);
if (itemIndex > 0)
{
products[itemIndex] = product;
}
else
{
return null;
}
WriteData(products);
return product;
}