Add support for last_payment_error on PaymentIntent

src/Stripe.net/Entities/PaymentIntents/PaymentIntent.cs

@@ -87,6 +87,9 @@ internal object InternalCustomer
         [JsonProperty("description")]
         public string Description { get; set; }
 
+        [JsonProperty("last_payment_error")]
+        public PaymentIntentLastPaymentError LastPaymentError { get; set; }
+
         [JsonProperty("livemode")]
         public bool Livemode { get; set; }
 

src/Stripe.net/Entities/PaymentIntents/PaymentIntentLastPaymentError.cs

@@ -0,0 +1,34 @@
+namespace Stripe
+{
+    using System.Runtime.Serialization;
+    using Newtonsoft.Json;
+    using Newtonsoft.Json.Converters;
+    using Stripe.Infrastructure;
+
+    public class PaymentIntentLastPaymentError : StripeEntity
+    {
+        [JsonProperty("charge")]
+        public string ChargeId { get; set; }
+
+        [JsonProperty("code")]
+        public string Code { get; set; }
+
+        [JsonProperty("decline_code")]
+        public string DeclineCode { get; set; }
+
+        [JsonProperty("doc_url")]
+        public string DocUrl { get; set; }
+
+        [JsonProperty("message")]
+        public string Message { get; set; }
+
+        [JsonProperty("param")]
+        public string Param { get; set; }
+
+        [JsonProperty("source")]
+        public IPaymentSource Source { get; set; }
+
+        [JsonProperty("type")]
+        public string Type { get; set; }
+    }
+}

src/StripeTests/Entities/PaymentIntents/PaymentIntentTest.cs

@@ -91,5 +91,23 @@ public void DeserializeNextSourceActionUnknown()
             Assert.Equal("foo", intent.NextSourceAction.Type);
             Assert.Null(intent.NextSourceAction.AuthorizeWithUrl);
         }
+
+        [Fact]
+        public void DeserializeLastPaymentError()
+        {
+            var json = GetResourceAsString("api_fixtures.payment_intent.last_payment_error.json");
+            var intent = Mapper<PaymentIntent>.MapFromJson(json);
+
+            Assert.NotNull(intent);
+            Assert.IsType<PaymentIntent>(intent);
+            Assert.NotNull(intent.Id);
+            Assert.Equal("payment_intent", intent.Object);
+
+            var lastPaymentError = intent.LastPaymentError;
+            Assert.NotNull(lastPaymentError);
+            Assert.Equal("generic_decline", lastPaymentError.DeclineCode);
+            Assert.IsType<Card>(lastPaymentError.Source);
+            Assert.Equal("card_123", lastPaymentError.Source.Id);
+        }
     }
 }

src/StripeTests/Resources/api_fixtures/payment_intent/last_payment_error.json

@@ -0,0 +1,64 @@
+{
+    "id": "pi_123",
+    "object": "payment_intent",
+    "allowed_source_types": [
+        "card"
+    ],
+    "amount": 100,
+    "amount_capturable": 0,
+    "amount_received": 0,
+    "application": null,
+    "application_fee_amount": null,
+    "canceled_at": null,
+    "cancellation_reason": null,
+    "capture_method": "automatic",
+    "charges": {
+        "object": "list",
+        "data": [
+            {
+                "id": "ch_123",
+                "object": "charge"
+            }
+        ],
+        "has_more": false,
+        "total_count": 1,
+        "url": "\/v1\/charges?payment_intent=pi_123"
+    },
+    "client_secret": null,
+    "confirmation_method": "publishable",
+    "created": 1541614878,
+    "currency": "eur",
+    "customer": "cus_DvnENrEbZJeIQE",
+    "description": "PaymentIntent Description",
+    "last_payment_error": {
+        "charge": "ch_123",
+        "code": "card_declined",
+        "decline_code": "generic_decline",
+        "doc_url": "https:\/\/stripe.com\/docs\/error-codes\/card-declined",
+        "message": "Your card was declined.",
+        "source": {
+            "id": "card_123",
+            "object": "card",
+            "brand": "Visa",
+            "country": "US",
+            "customer": "cus_123",
+            "exp_month": 9,
+            "exp_year": 2019,
+            "fingerprint": "fingerprint",
+            "last4": "0341"
+        },
+        "type": "card_error"
+    },
+    "livemode": false,
+    "next_source_action": null,
+    "on_behalf_of": null,
+    "receipt_email": null,
+    "return_url": null,
+    "review": null,
+    "shipping": null,
+    "source": null,
+    "statement_descriptor": null,
+    "status": "requires_source",
+    "transfer_data": null,
+    "transfer_group": null
+}