Merge pull request #151 from mwarzybok-sumoheavy/feature/SP-874

SP-874 Support "errors" array

Author: bobbrodie

BitPay/Clients/HttpResponseParser.cs

@@ -79,6 +79,40 @@ public static async Task<string> ResponseToJsonString(HttpResponseMessage? respo
                 BitPayExceptionProvider.ThrowApiExceptionWithMessage(value!.ToString(), code!.ToString());
             }
 
+#pragma warning disable CA1865
+            if (jObj.TryGetValue("errors", out value))
+            {
+                var finalMessage = "";
+                foreach (var errorItem in value.Children().ToList())
+                {
+                    JObject jObjectErrorItem = (JObject)errorItem;
+                    string errorValue = (string) (jObjectErrorItem.ContainsKey("error") ? errorItem["error"] : "")!;
+                    string paramValue = (string) (jObjectErrorItem.ContainsKey("param") ? errorItem["param"] : "")!;
+                    
+                    if (errorValue.EndsWith(".", System.StringComparison.Ordinal))
+                    {
+                        errorValue = errorValue.Substring(0, errorValue.Length - 1);
+                    }
+                    
+                    string errorMessage = $"{errorValue} {paramValue}".Trim();
+                    
+                    if (!errorMessage.EndsWith(".", System.StringComparison.Ordinal))
+                    {
+                        errorMessage += ".";
+                    }
+                    
+                    if (finalMessage.Length > 0)
+                    {
+                        errorMessage = " " + errorMessage;
+                    }
+
+                    finalMessage += errorMessage;
+                }
+
+                BitPayExceptionProvider.ThrowApiExceptionWithMessage(finalMessage);
+            }
+#pragma warning restore CA1865
+
             if (jObj.ContainsKey("status") && jObj.ContainsKey("data"))
             {
                 if(jObj.TryGetValue("data", out value))

BitPayUnitTest/Clients/HttpResponseParserTest.cs

@@ -0,0 +1,33 @@
+// Copyright (c) 2019 BitPay.
+// All rights reserved.
+
+using System.Net;
+using System.Net.Http;
+
+using BitPay.Clients;
+using BitPay.Exceptions;
+
+using Xunit;
+
+namespace BitPayUnitTest.Clients
+{
+    public class HttpResponseParserTest
+    {
+        [Fact]
+        public void it_should_throws_bitpay_api_exception_for_response_with_errors()
+        {
+            HttpResponseMessage responseMessage = new HttpResponseMessage
+            {
+                StatusCode = HttpStatusCode.OK,
+                Content = new StringContent(
+                    "{\"errors\":[{\"error\":\"Missing required parameter.\",\"param\":\"price\"},{\"error\":\"Missing required parameter.\",\"param\":\"currency\"}]}"),
+                RequestMessage = new HttpRequestMessage(HttpMethod.Post, "any")
+            };
+
+            var exception =
+                Assert.ThrowsAsync<BitPayApiException>(() => HttpResponseParser.ResponseToJsonString(responseMessage))
+                    .Result;
+            Assert.Equal("Missing required parameter price. Missing required parameter currency.", exception.Message);
+        }
+    }
+}