[FunctionName("Remove_Item")] //Delete
public async Task <IActionResult> RemoveItem([HttpTrigger(AuthorizationLevel.Anonymous, "delete", Route = "cart/delete")] HttpRequest req)
{
try
{
if (req.Query is null)
{
throw new NullReferenceException();
}
else if (await IsTokenValid(req))
{
int.TryParse(req.Query["id"], out int id);
using Cart currentCart = await ICartRepo.GetOne(id);
using EcoItem ecoItem = await IEcoItemRepo.GetOne(currentCart.EcoItemId);
ecoItem.Quantity += currentCart.Quantity;
ICartRepo.Remove(currentCart);
IEcoItemRepo.Modify(ecoItem);
await Context.SaveChangesAsync();
return(new OkObjectResult(new Response(true, "Item successfully removed from the cart.", null)));
}
else
{
return(new UnauthorizedResult());
}
}
catch (Exception)
{ throw new Exception("Oops! Something went wrong!"); }
}
public async Task <IActionResult> DeleteEcoItem([HttpTrigger(AuthorizationLevel.Anonymous, "post", Route = "ecoitem/delete")] HttpRequest req)
{
try
{
if (req.Body is null)
{
throw new NullReferenceException();
}
else if (await IsTokenValid(req))
{
int.TryParse(req.Query["id"], out int id);
using EcoItem item = await IEcoItemRepo.GetOne(id);
IEcoItemRepo.Remove(item);
await Context.SaveChangesAsync();
return(new OkObjectResult(new Response(true, "Item has been deleted.", null)));
}
else
{
return(new UnauthorizedResult());
}
}
catch (Exception)
{ throw new Exception("Oops! Something went wrong!"); }
}
public async Task <IActionResult> UpdateEcoItem([HttpTrigger(AuthorizationLevel.Anonymous, "post", Route = "ecoitem/update")] HttpRequest req)
{
try
{
if (req.Body is null)
{
throw new NullReferenceException();
}
else if (await IsTokenValid(req))
{
string requestBody = await new StreamReader(req.Body).ReadToEndAsync();
using EcoItem ecoitem = JsonConvert.DeserializeObject <EcoItem>(requestBody);
if (ValidationEcoItem(ecoitem))
{
IEcoItemRepo.Modify(ecoitem);
await Context.SaveChangesAsync();
return(new OkObjectResult(new Response(true, "Item has been added.", ecoitem)));
}
return(new OkObjectResult(new Response(false, "Item failed to updated. Please check quantity.", null)));
}
else
{
return(new UnauthorizedResult());
}
}
catch (Exception)
{ throw new Exception("Oops! Something went wrong!"); }
}
[FunctionName("Update_Cart")] //Update
public async Task <IActionResult> UpdateCart([HttpTrigger(AuthorizationLevel.Anonymous, "put", Route = "cart/put")] HttpRequest req)
{
try
{
if (req.Query is null)
{
throw new NullReferenceException();
}
else if (await IsTokenValid(req))
{
string requestBody = await new StreamReader(req.Body).ReadToEndAsync();
using Cart cart = JsonConvert.DeserializeObject <Cart>(requestBody);
//check if item has enough stock
if (await IsInStock(cart.Id, cart.Quantity))
{
using EcoItem ecoItem = await IEcoItemRepo.GetOne(cart.EcoItemId);
using Cart currentCart = await ICartRepo.GetOne(cart.Id);
ecoItem.Quantity -= currentCart.Quantity - cart.Quantity;
ICartRepo.Modify(cart);
IEcoItemRepo.Modify(ecoItem);
await Context.SaveChangesAsync();
return(new OkObjectResult(new Response(true, "Cart has been updated successfully.", cart)));
}
else
{
return(new OkObjectResult(new Response(false, "Cannot add to cart, item is out-of-stock.", null)));
}
}
else
{
return(new UnauthorizedResult());
}
}
catch (Exception)
{ throw new Exception("Oops! Something went wrong!"); }
}
private async Task <bool> IsInStock(int id, int cartQty)
{
using EcoItem ecoItem = await IEcoItemRepo.GetOne(id);
return(ecoItem.Quantity > cartQty);
}
private bool ValidationEcoItem(EcoItem ecoitem) => !(ecoitem is null || ecoitem?.Quantity == 0);