A second variation of the shopping cart DTOs using custom attributes. · GitHub

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A second variation of the shopping cart DTOs using custom attributes.

abstract class ShoppingCart { public ShoppingCart(string state) { State = state; } [JsonProperty("_state")] public string State { get; } }

class EmptyCart : ShoppingCart { public EmptyCart() : base("empty") {} }

class ActiveCart : ShoppingCart { public ActiveCart() : base("paid") { }

[JsonProperty("unpaidItems")] public Item[] UnpaidItems { get; set; } }

class PaidCart : ShoppingCart { public PaidCart() : base("paid") {} [JsonProperty("paidItems")] public Item[] PaidItems { get; set; }

[JsonProperty("payment")] public Money Payment { get; set; }

[JsonProperty("timestamp")] public string Timestamp { get; set; } }

class Item { [JsonProperty("id")] public string Id { get; set; }

[JsonProperty("title")] public string Title { get; set; }

[JsonProperty("description", NullValueHandling = NullValueHandling.Ignore)] public string Description { get; set; } }

class Money { [JsonProperty("amount")] public double Amount { get; set; }

[JsonProperty("currency")] public string Currency { get; set; } }

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