Esempio n. 1
0
        public ProductType(DataLoader loader, SubscriptionRepository subscriptions, ProductRepository products, TransactionRepository transactions, UserManager <User> userManager)
        {
            Name        = "Product";
            Description = "Information about a product";

            Field(p => p.Id).Description("Unique ID of this product.");
            Field(p => p.Name).Description("The product's name.");
            Field(p => p.Description, nullable: true).Description("The product's description.");
            Field(p => p.Price).Description("The product's unit price.");
            Field(p => p.IsDeleted).Description("Indicates if this product was deleted.");
            Field("canSubscribe", p => p.IsSubscribable).Description("Indicates if this product can be subscribed to.");

            Field <BooleanGraphType>("isSubscribed",
                                     resolve: ctx => {
                var currentUser = ctx.UserContext.As <DepanneurUserContext>().User;
                var userId      = userManager.GetUserId(currentUser);
                return(loader.LoadBatch("AreProductsSubscribed", ctx.Source.Id, ids => subscriptions.AreProductsSubscribed(userId, ids)));
            },
                                     description: "Indicates if this product is currently subscribed to by the current user.");

            Field <SubscriptionType>("subscription",
                                     resolve: ctx => {
                var currentUser = ctx.UserContext.As <DepanneurUserContext>().User;
                var userId      = userManager.GetUserId(currentUser);
                return(loader.LoadBatch("GetProductSubscriptions", ctx.Source.Id, ids => subscriptions.GetProductSubscriptions(userId, ids)));
            },
                                     description: "The details of the current subscription to this product by the current user.");

            Field <ProductStatisticsType>("stats", resolve: ctx => ctx.Source, description: "Statistics about this product.");

            Field <PaginationType <PurchaseTransactionType, Purchase> >(
                "purchases",
                description: "The pruchases of this product by all users. Requires the 'Products' role.",
                arguments: new QueryArguments(
                    new QueryArgument <IntGraphType> {
                Name = "page", DefaultValue = 1, Description = "Page number to retrieve."
            },
                    new QueryArgument <IntGraphType> {
                Name = "count", DefaultValue = 20, Description = "Number of items per page."
            }
                    ),
                resolve: ctx => {
                var page  = ctx.GetArgument <int>("page");
                var count = ctx.GetArgument <int>("count");

                return(transactions
                       .GetAll()
                       .PurchasesOfProduct(ctx.Source.Id)
                       .Chronologically()
                       .GetPageAsync(page, count));
            }).AuthorizeWith(Policies.ManageProducts);
        }