Added icons for iOS. Broke out data access into repositories. Added syncing service.

src/App/Repositories/BaseApiRepository.cs

@@ -0,0 +1,50 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net.Http;
+using System.Net.Http.Headers;
+using System.Text;
+using System.Threading.Tasks;
+using Bit.App.Models.Api;
+using ModernHttpClient;
+using Newtonsoft.Json;
+
+namespace Bit.App.Repositories
+{
+    public abstract class BaseApiRepository
+    {
+        public BaseApiRepository()
+        {
+            Client = new HttpClient(new NativeMessageHandler());
+            Client.BaseAddress = new Uri("https://api.bitwarden.com");
+            Client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
+        }
+
+        protected virtual HttpClient Client { get; private set; }
+        protected abstract string ApiRoute { get; }
+
+        public async Task<ApiResult<T>> HandleErrorAsync<T>(HttpResponseMessage response)
+        {
+            try
+            {
+                var responseContent = await response.Content.ReadAsStringAsync();
+                var errorResponseModel = JsonConvert.DeserializeObject<ErrorResponse>(responseContent);
+
+                var errors = new List<ApiError>();
+                foreach(var valError in errorResponseModel.ValidationErrors)
+                {
+                    foreach(var errorMessage in valError.Value)
+                    {
+                        errors.Add(new ApiError { Message = errorMessage });
+                    }
+                }
+
+                return ApiResult<T>.Failed(response.StatusCode, errors.ToArray());
+            }
+            catch(JsonReaderException)
+            { }
+
+            return ApiResult<T>.Failed(response.StatusCode, new ApiError { Message = "An unknown error has occured." });
+        }
+    }
+}