/// <summary>
/// Adds product to basket. This results in creating basket items in the database.
/// </summary>
/// <param name="basketId">basket id</param>
/// <param name="productId">product id</param>
/// <param name="quantity">number of products to be added</param>
/// <returns>result information</returns>
public Result AddProduct(Guid basketId, Guid productId, int quantity)
{
try
{
if (quantity <= 0)
{
return(Result.Error("Provided parameter quantity must be bigger then 0."));
}
using (var context = new EntityModels.ServiceBusDatabaseEntities())
{
var basket = context.Baskets.FirstOrDefault(p => p.Id == basketId);
if (basket == null)
{
return(Result.Error("Basket was not found. Please make sure basket ID is valid"));
}
var product = context.Products.FirstOrDefault(p => p.Id == productId);
if (product == null)
{
return(Result.Error("Product was not found. Please make sure product ID is valid"));
}
var basketItem = basket.BasketItems.FirstOrDefault(p => p.ProductId == productId);
if (basketItem == null)
{
context.BasketItems.Add(new EntityModels.BasketItem()
{
ProductId = productId,
BasketId = basketId,
Quantity = quantity,
Id = Guid.NewGuid()
});
context.SaveChanges();
return(Result.SuccessFormat("Product has been added to basket"));
}
else //Product exists in the basket - update BasketItems
{
basketItem.Quantity = basketItem.Quantity + quantity;
context.SaveChanges();
return(Result.SuccessFormat("Product has been increes"));
}
}
}
catch (Exception exception)
{
return(Result.FatalFormat("BasketService.AddProduct Exception: {0}", exception.Message));
}
}
/// <summary>
/// This method adds product into datasource
/// </summary>
/// <param name="name">Name of a new product</param>
/// <param name="price">Price of a new product</param>
/// <param name="guid">ID of a new product</param>
/// <returns>Result object</returns>
public Result AddProduct(string name, double price, Guid guid)
{
try
{
if ((!string.IsNullOrWhiteSpace(name) && name.Length <= 50) && price >= 0)
{
using (var context = new EntityModels.ServiceBusDatabaseEntities())
{
context.Products.Add(new EntityModels.Product()
{
Id = guid, Name = name, Price = price, ProductType = context.ProductTypes.First()
});
context.SaveChanges();
return(Result.SuccessFormat("Product {0} | {1} has been added", guid, name));
}
}
else
{
return(Result.Error("Provided parameters are unacceptable."));
}
}
catch (Exception ex)
{
return(Result.FatalFormat("ProductService.AddProduct Exception: {0}", ex.Message));
}
}
/// <summary>
/// Creates a new basket and returns itself
/// </summary>
/// <returns>data of the newly created basket</returns>
public Basket CreateBasket()
{
try
{
using (var context = new EntityModels.ServiceBusDatabaseEntities())
{
var basket = new Basket()
{
Id = Guid.NewGuid(), Result = Result.Success("New Basket created.")
};
context.Baskets.Add(new EntityModels.Basket()
{
Id = basket.Id, TotalPrice = 0
});
context.SaveChanges();
return(basket);
}
}
catch (Exception exception)
{
return(new Basket {
Result = Result.ErrorFormat("BasketService.CreateBasket Exception: {0}", exception.Message)
});
}
}
public Result AddCampaign(Guid guid, string name, double discount)
{
try
{
if ((!string.IsNullOrWhiteSpace(name) && name.Length <= 50) && discount >= 0)
{
using (var context = new EntityModels.ServiceBusDatabaseEntities())
{
context.Campaigns.Add(new EntityModels.Campaign()
{
Id = guid, Name = name, Discount = discount
});
context.SaveChanges();
return(Result.SuccessFormat("Product {0} | {1} has been added", guid, name));
}
}
else
{
return(Result.Error("Provided parameters are unacceptable."));
}
}
catch (Exception ex)
{
return(Result.FatalFormat("ProductService.AddProduct Exception: {0}", ex.Message));
}
}
/// <summary>
/// Removes quantity of products from basket. This results in removal of basket items from the database.
/// </summary>
/// <param name="basketId">basket id</param>
/// <param name="productId">product id</param>
/// <param name="quantity">number of products to be added</param>
/// <returns>result information</returns>
public Result RemoveProduct(Guid basketId, Guid productId, int quantity)
{
try
{
using (var context = new EntityModels.ServiceBusDatabaseEntities())
{
var basket = context.Baskets.FirstOrDefault(p => p.Id == basketId);
if (basket == null)
{
return(Result.Error("Basket was not found. Please make sure basket ID is valid"));
}
var basketItem = basket.BasketItems.FirstOrDefault(p => p.ProductId == productId);
if (basketItem == null)
{
return(Result.Error("Product was not found. Please make sure product ID is valid"));
}
if (quantity <= 0)
{
return(Result.Error("Provided parameter quantity must be bigger then 0."));
}
if (quantity > basketItem.Quantity)
{
return(Result.Error("Provided parameter quantity is too high."));
}
if (quantity == basketItem.Quantity)
{
context.BasketItems.Remove(basketItem);
context.SaveChanges();
return(Result.SuccessFormat("Product has been deleted from basket."));
}
basketItem.Quantity = basketItem.Quantity - quantity;
context.SaveChanges();
return(Result.SuccessFormat("Product has been decreased from basket."));
}
}
catch (Exception exception)
{
return(Result.FatalFormat("BasketService.RemoveProduct Exception: {0}", exception.Message));
}
}
/// <summary>
/// Adds campaing into the basket. This results in creation of basket campaigns in the database.
/// </summary>
/// <param name="basketId">basket id</param>
/// <param name="campaignId">camaping id</param>
/// <returns>result information</returns>
public Result AddCampaign(Guid basketId, Guid campaignId)
{
try
{
using (var context = new EntityModels.ServiceBusDatabaseEntities())
{
var basket = context.Baskets.FirstOrDefault(p => p.Id == basketId);
if (basket == null)
{
return(Result.Error("Basket was not found. Please make sure basket ID is valid"));
}
var campaign = context.Campaigns.FirstOrDefault(c => c.Id == campaignId);
if (campaign == null)
{
return(Result.Error("Campaign was not found. Please make sure campaign ID is valid"));
}
var campaignItem = basket.CampaignItems.FirstOrDefault(p => p.CampaignId == campaignId);
if (campaignItem == null)
{
context.CampaignItems.Add(new EntityModels.CampaignItem()
{
CampaignId = campaignId,
BasketId = basketId,
Id = Guid.NewGuid()
});
context.SaveChanges();
return(Result.SuccessFormat("Campaign has been added: "));
}
else
{
return(Result.Success("Campaign is allready in the basket"));
}
}
}
catch (Exception exception)
{
return(Result.FatalFormat("BasketService.AddProduct Exception: {0}", exception.Message));
}
}
/// <summary>
/// Adds campaing into the basket. This results in creation of basket campaigns in the database.
/// </summary>
/// <param name="basketId">basket id</param>
/// <param name="campaignId">camaping id</param>
/// <returns>result information</returns>
public SharedLibs.DataContracts.Basket CreateBasket()
{
try
{
using (var context = new EntityModels.ServiceBusDatabaseEntities())
{
EntityModels.Basket b = context.Baskets.Add(new EntityModels.Basket()
{
Id = Guid.NewGuid()
});
context.SaveChanges();
b = context.Baskets.Attach(b);
return(new SharedLibs.DataContracts.Basket()
{
Id = b.Id,
Result = SharedLibs.DataContracts.Result.SuccessFormat("Basket {0} was created.", b.Id)
});
}
}
catch (Exception ex)
{
throw new Exception("Creation of basket failed. " + ex.Message);
}
}
/// <summary>
/// Delete product item from datasource
/// </summary>
/// <param name="guid">ID of a product</param>
/// <returns>Result object</returns>
public Result DeleteProduct(Guid guid)
{
try
{
using (var context = new EntityModels.ServiceBusDatabaseEntities())
{
var product = context.Products.FirstOrDefault(p => p.Id == guid);
if (product != null)
{
context.Products.Remove(product);
context.SaveChanges();
return(Result.SuccessFormat("Product {0} - {1} has been deleted.", product.Id, product.Name));
}
return(Result.Error("Product was not found. Please make sure product ID is valid."));
}
}
catch (Exception exception)
{
return(Result.FatalFormat("ProductService.DeleteProduct exception has occured : {0}", exception.Message));
}
}
/// <summary>
/// This method edits product in case product exists
/// </summary>
/// <param name="guid">ID of a product</param>
/// <param name="name">New name for a product</param>
/// <param name="price">New price for a product</param>
/// <returns>Modified product</returns>
public Product EditProduct(Guid guid, string name, double price)
{
try
{
var originalProduct = GetProduct(guid);
if (originalProduct.Result.ResultType == ResultType.Success)
{
var editableProduct = new EntityModels.Product()
{
Id = originalProduct.ID,
Name = originalProduct.Name,
Price = originalProduct.Price
};
using (var context = new EntityModels.ServiceBusDatabaseEntities())
{
context.Products.Attach(editableProduct);
//is new name valid and different than the stored one?
if (!String.IsNullOrWhiteSpace(name) && name.Length <= 50 && name != editableProduct.Name)
{
editableProduct.Name = name;
}
//is price valid and different from the stored one?
if (price != editableProduct.Price && price >= 0)
{
editableProduct.Price = price;
}
//No changes? No need to update
if (context.Entry(editableProduct).State == EntityState.Unchanged)
{
originalProduct.Result = Result.WarningFormat("Product {0} was not modified.", originalProduct.ID);
return(originalProduct);
}
//Otherwise update db and return what you should return
else
{
context.SaveChanges();
return(new Product()
{
ID = editableProduct.Id,
Name = editableProduct.Name,
Price = editableProduct.Price.HasValue ? editableProduct.Price.Value : 0.0,
Result = Result.Success()
});
}
}
}
else
{
return(originalProduct);
}
}
catch (Exception exception)
{
return(new Product()
{
Result =
Result.FatalFormat("ProductService.EditProduct exception has occured : {0}", exception.Message)
});
}
}
