public async Task <bool> HasAlreadyYielded()
{
var buyerId = (await TomSawyer.GetTomSawyer()).UserName;
var rosesItemsIds = (await ShopItems.GetAllItems()).Where(item => item.CatalogBrandId == Brands.RoseCelebration.Id && item.CatalogTypeId == CatalogTypes.Flower.Id).Select(item => item.Id);
return(await dbContext.Orders.AnyAsync(order => order.BuyerId == buyerId && order.OrderItems.All(item => rosesItemsIds.Contains(item.ItemOrdered.CatalogItemId))));
}
public async Task Seed()
{
var buyerId = (await TomSawyer.GetTomSawyer()).UserName;
// Get one item from each catalog type.
var itemsInTheBasket = (await ShopItems.GetAllItems()).GroupBy(item => item.CatalogTypeId).Select(group => group.First());
// NSEED-vNEXT: Ideally, we want to check here if we got an item for every catalog type.
// In the upcoming versions NSeed will have built-in support for asserting such expectations.
// So far we just assume that we got what we expect.
var basket = new Basket(buyerId);
var quantity = Markers.InitialQuantity;
foreach (var item in itemsInTheBasket)
{
basket.AddItem(item.Id, item.Price, quantity);
quantity += Markers.QuantityIncrement;
}
await basketRepository.AddAsync(basket);
}
public async Task Seed()
{
var buyerId = (await TomSawyer.GetTomSawyer()).UserName;
var rosesItems = (await ShopItems.GetAllItems()).Where(item => item.CatalogBrandId == Brands.RoseCelebration.Id && item.CatalogTypeId == CatalogTypes.Flower.Id);
// Create temporary basket and fill it with all the items.
var basket = new Basket(buyerId);
foreach (var item in rosesItems)
{
basket.AddItem(item.Id, item.Price, 1);
}
basket = await basketRepository.AddAsync(basket);
await orderService.CreateOrderAsync(basket.Id, TomSawyer.GetTomsAddress());
// Delete temporary basket.
await basketRepository.DeleteAsync(basket);
}
// NSEED-NOTE:
// This is an example of a seed that has a simple Seed() method but rather
// complex way to determine if the yield of that seed already exist.
// Ideally we do not want to have that. The HasAlreadyYielded() methods should
// have simple heuristics.
public async Task <bool> HasAlreadyYielded()
{
var buyerId = (await TomSawyer.GetTomSawyer()).UserName;
// Find a basket that has exactly that many items as the number of catalog types that have catalog items.
var catalogTypesWithItemsIds = (await ShopItems.GetAllItems()).Select(item => item.CatalogTypeId).Distinct().ToArray();
var potentialBasket = await dbContext.Baskets.Include(basket => basket.Items).FirstOrDefaultAsync(basket => basket.BuyerId == buyerId && basket.Items.Count() == catalogTypesWithItemsIds.Length);
if (potentialBasket is null)
{
return(false);
}
// Get distinct catalog type ids of the items in the bucket. We have to fetch the types over catalog items.
var potentialBasketCatalogItemsIds = potentialBasket.Items.Select(item => item.CatalogItemId).ToArray();
var catalogTypesInTheBasketIds = await dbContext.CatalogItems.Where(catalogItem => potentialBasketCatalogItemsIds.Contains(catalogItem.Id)).Select(item => item.CatalogTypeId).Distinct().ToArrayAsync();
if (catalogTypesInTheBasketIds.Length != catalogTypesWithItemsIds.Length)
{
return(false);
}
// So far, we have exactly one item for each of the catalog types.
// Now we have to check for the quantities.
var quantity = Markers.InitialQuantity;
foreach (var item in potentialBasket.Items.OrderBy(item => item.Quantity))
{
if (item.Quantity != quantity)
{
return(false);
}
quantity += Markers.QuantityIncrement;
}
return(true);
}