/// <summary>Updates a product.</summary>
/// <param name="product">The product to update.</param>
/// <returns>The updated product.</returns>
public Product Update(Product product)
{
//TODO: Check arguments
if (product == null)
{
throw new ArgumentNullException(nameof(product));
}
if (product.Id <= 0)
{
throw new ArgumentOutOfRangeException(nameof(product), "Id must be greater than zero");
}
//TODO: Validate product
var validationResults = new ObjectValidator().TryValidateFullobject(product);
if (validationResults.Count() > 0)
{
var builder = new System.Text.StringBuilder();
foreach (var result in validationResults)
{
builder.AppendLine(result.ErrorMessage);
}
;
//Show error message
throw new Exception(builder.ToString());
// return null;
}
;
//Get existing product
var existing = GetCore(product.Id);
var products = GetAll();
if (products != null)
{
foreach (var product2 in products)
{
if (String.Compare(product.Name, product2.Name, true) == 0)
{
if (!(String.Compare(existing.Name, product.Name, true) == 0))
{
throw new InvalidOperationException(" Product name must be unique");
}
}
}
}
;
return(UpdateCore(existing, product));
}
/// <summary>Adds a product.</summary>
/// <param name="product">The product to add.</param>
/// <returns>The added product.</returns>
public Product Add(Product product)
{
//TODO: Check arguments
if (product == null)
{
throw new ArgumentNullException(nameof(product));
}
var validationResults = new ObjectValidator().TryValidateFullobject(product);
if (validationResults.Count() > 0)
{
var builder = new System.Text.StringBuilder();
foreach (var result in validationResults)
{
builder.AppendLine(result.ErrorMessage);
}
;
// Show error message
throw new Exception(builder.ToString());
// return null;
}
;
var existing = GetAll();
if (existing != null)
{
foreach (var product2 in existing)
{
if (String.Compare(product.Name, product2.Name, true) == 0)
{
throw new InvalidOperationException(" Product name must be unique");
}
}
}
;
//Emulate database by storing copy
try
{
return(AddCore(product));
} catch (Exception e)
{
//Throwing a new exception
throw new InvalidOperationException("Add Failed", e);
};
}
