public List <REST.RESTCart> Put(REST.RESTCart data)
{
try
{
if (ModelState.IsValid)
{
_context.Update(data.ToDataModel());
_context.SaveChanges();
}
else
{
throw new Exception("Invalid input provided");
}
var items = _context.Carts.Where(c => c.CustomerID == data.CustomerID).ToList();
var response = new List <REST.RESTCart>();
foreach (var item in items)
{
response.Add(item.ToRest());
}
return(response);
}
catch (Exception e)
{
throw e;
}
}
/// <summary>
/// changes rest object to data object
/// </summary>
/// <param name="item"></param>
/// <returns></returns>
public static Assignment2.Models.Cart ToDataModel(this REST.RESTCart item)
{
return(new Assignment2.Models.Cart {
CustomerID = item.CustomerID,
ProductID = item.ProductID,
StoreID = item.StoreID,
Quantity = item.Quantity
});
}
public static FormUrlEncodedContent ToHttpBody(this REST.RESTCart item)
{
var pairs = new List <KeyValuePair <string, string> >();
pairs.Add(new KeyValuePair <string, string>("CustomerID", item.CustomerID));
pairs.Add(new KeyValuePair <string, string>("ProductID", item.ProductID.ToString()));
pairs.Add(new KeyValuePair <string, string>("StoreID", item.StoreID.ToString()));
pairs.Add(new KeyValuePair <string, string>("Quantity", item.Quantity.ToString()));
var content = new FormUrlEncodedContent(pairs);
return(content);
}
public List <REST.RESTCart> Post(REST.RESTCart data)
{
try
{
if (data.Quantity < 1)
{
throw new Exception("Invalid quantity provided");
}
if (ModelState.IsValid)
{
// check if item exists
var exists = _context.Carts.Where(c => c.ProductID == data.ProductID)
.Where(c => c.StoreID == data.StoreID)
.Where(c => c.CustomerID == data.CustomerID).FirstOrDefault();
var quantity = 0;
if (exists == null)
{
quantity = data.Quantity;
_context.Add(data.ToDataModel());
}
else
{
exists.Quantity += data.Quantity;
quantity = exists.Quantity;
_context.Update(exists);
}
// check the stock level
var storeInventory = _context.StoreInventories.Where(c => c.StoreID == data.StoreID).Where(c => c.ProductID == data.ProductID).FirstOrDefault();
if (storeInventory == null)
{
throw new Exception("Invalid Item chosen");
}
else
{
if (quantity > storeInventory.StockLevel)
{
throw new Exception("Insufficient stock");
}
_context.SaveChanges();
}
}
else
{
throw new Exception("Invalid input provided");
}
var items = _context.Carts.Include(c => c.Product).Include(c => c.Store).Where(c => c.CustomerID == data.CustomerID).ToList();
var response = new List <REST.RESTCart>();
foreach (var item in items)
{
response.Add(item.ToRest());
}
return(response);
}
catch (Exception e)
{
throw e;
}
}
