Task 1 extra

.gitignore

@@ -7,6 +7,7 @@
 *.rsuser
 *.suo
 *.user
+*.idea
 *.userosscache
 *.sln.docstates
 

UndoAssessment.sln

@@ -9,6 +9,26 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "UndoAssessment.iOS", "UndoA
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "UndoAssessment", "UndoAssessment\UndoAssessment\UndoAssessment.csproj", "{7ED4972A-D279-4E63-B4F5-3D15590D4AA1}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "UndoAssessment.Api", "UndoAssessment\UndoAssessment.Api\UndoAssessment.Api.csproj", "{43EB5F9C-C7BE-48FA-8EBF-E3C87C4F3FE1}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "App", "App", "{E58169B1-FD07-417D-98B3-46405BF552CB}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Pages", "Pages", "{BAAC9093-C8DE-4FB7-A84C-DA72A058B55B}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "UndoAssessment.View", "UndoAssessment\UndoAssessment.View\UndoAssessment.View.csproj", "{23CBC56F-5494-435A-A040-222F66F8CC24}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "UndoAssessment.ViewModels", "UndoAssessment\UndoAssessment.ViewModels\UndoAssessment.ViewModels.csproj", "{0CF8DD02-FE81-4B6A-BA6D-A64752361ECC}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "UndoAssessment.Common", "UndoAssessment\UndoAssessment.Common\UndoAssessment.Common.csproj", "{4B464370-C3EB-4838-AD84-BFF11D628633}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Services", "Services", "{6E542EEB-D8E0-46B9-A0E5-06DBA6C9CFD2}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "UndoAssessment.Service.Contract", "UndoAssessment\UndoAssessment.Service.Contract\UndoAssessment.Service.Contract.csproj", "{885B0474-90D1-4C57-8AD7-7B0F3CB2E565}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Core", "Core", "{EAB717EF-2A1B-4AF5-8212-DDA8666150C8}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "UndoAssessment.Domain", "UndoAssessment\UndoAssessment.Domain\UndoAssessment.Domain.csproj", "{947C30A2-849C-4D97-AD37-0E2366D0F456}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -55,11 +75,93 @@ Global
 		{7ED4972A-D279-4E63-B4F5-3D15590D4AA1}.Debug|iPhone.Build.0 = Debug|Any CPU
 		{7ED4972A-D279-4E63-B4F5-3D15590D4AA1}.Release|iPhone.ActiveCfg = Release|Any CPU
 		{7ED4972A-D279-4E63-B4F5-3D15590D4AA1}.Release|iPhone.Build.0 = Release|Any CPU
+		{43EB5F9C-C7BE-48FA-8EBF-E3C87C4F3FE1}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{43EB5F9C-C7BE-48FA-8EBF-E3C87C4F3FE1}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{43EB5F9C-C7BE-48FA-8EBF-E3C87C4F3FE1}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{43EB5F9C-C7BE-48FA-8EBF-E3C87C4F3FE1}.Release|Any CPU.Build.0 = Release|Any CPU
+		{43EB5F9C-C7BE-48FA-8EBF-E3C87C4F3FE1}.Debug|iPhoneSimulator.ActiveCfg = Debug|Any CPU
+		{43EB5F9C-C7BE-48FA-8EBF-E3C87C4F3FE1}.Debug|iPhoneSimulator.Build.0 = Debug|Any CPU
+		{43EB5F9C-C7BE-48FA-8EBF-E3C87C4F3FE1}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{43EB5F9C-C7BE-48FA-8EBF-E3C87C4F3FE1}.Release|iPhoneSimulator.Build.0 = Release|Any CPU
+		{43EB5F9C-C7BE-48FA-8EBF-E3C87C4F3FE1}.Debug|iPhone.ActiveCfg = Debug|Any CPU
+		{43EB5F9C-C7BE-48FA-8EBF-E3C87C4F3FE1}.Debug|iPhone.Build.0 = Debug|Any CPU
+		{43EB5F9C-C7BE-48FA-8EBF-E3C87C4F3FE1}.Release|iPhone.ActiveCfg = Release|Any CPU
+		{43EB5F9C-C7BE-48FA-8EBF-E3C87C4F3FE1}.Release|iPhone.Build.0 = Release|Any CPU
+		{23CBC56F-5494-435A-A040-222F66F8CC24}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{23CBC56F-5494-435A-A040-222F66F8CC24}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{23CBC56F-5494-435A-A040-222F66F8CC24}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{23CBC56F-5494-435A-A040-222F66F8CC24}.Release|Any CPU.Build.0 = Release|Any CPU
+		{23CBC56F-5494-435A-A040-222F66F8CC24}.Debug|iPhoneSimulator.ActiveCfg = Debug|Any CPU
+		{23CBC56F-5494-435A-A040-222F66F8CC24}.Debug|iPhoneSimulator.Build.0 = Debug|Any CPU
+		{23CBC56F-5494-435A-A040-222F66F8CC24}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{23CBC56F-5494-435A-A040-222F66F8CC24}.Release|iPhoneSimulator.Build.0 = Release|Any CPU
+		{23CBC56F-5494-435A-A040-222F66F8CC24}.Debug|iPhone.ActiveCfg = Debug|Any CPU
+		{23CBC56F-5494-435A-A040-222F66F8CC24}.Debug|iPhone.Build.0 = Debug|Any CPU
+		{23CBC56F-5494-435A-A040-222F66F8CC24}.Release|iPhone.ActiveCfg = Release|Any CPU
+		{23CBC56F-5494-435A-A040-222F66F8CC24}.Release|iPhone.Build.0 = Release|Any CPU
+		{0CF8DD02-FE81-4B6A-BA6D-A64752361ECC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{0CF8DD02-FE81-4B6A-BA6D-A64752361ECC}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{0CF8DD02-FE81-4B6A-BA6D-A64752361ECC}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{0CF8DD02-FE81-4B6A-BA6D-A64752361ECC}.Release|Any CPU.Build.0 = Release|Any CPU
+		{0CF8DD02-FE81-4B6A-BA6D-A64752361ECC}.Debug|iPhoneSimulator.ActiveCfg = Debug|Any CPU
+		{0CF8DD02-FE81-4B6A-BA6D-A64752361ECC}.Debug|iPhoneSimulator.Build.0 = Debug|Any CPU
+		{0CF8DD02-FE81-4B6A-BA6D-A64752361ECC}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{0CF8DD02-FE81-4B6A-BA6D-A64752361ECC}.Release|iPhoneSimulator.Build.0 = Release|Any CPU
+		{0CF8DD02-FE81-4B6A-BA6D-A64752361ECC}.Debug|iPhone.ActiveCfg = Debug|Any CPU
+		{0CF8DD02-FE81-4B6A-BA6D-A64752361ECC}.Debug|iPhone.Build.0 = Debug|Any CPU
+		{0CF8DD02-FE81-4B6A-BA6D-A64752361ECC}.Release|iPhone.ActiveCfg = Release|Any CPU
+		{0CF8DD02-FE81-4B6A-BA6D-A64752361ECC}.Release|iPhone.Build.0 = Release|Any CPU
+		{4B464370-C3EB-4838-AD84-BFF11D628633}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4B464370-C3EB-4838-AD84-BFF11D628633}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4B464370-C3EB-4838-AD84-BFF11D628633}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4B464370-C3EB-4838-AD84-BFF11D628633}.Release|Any CPU.Build.0 = Release|Any CPU
+		{4B464370-C3EB-4838-AD84-BFF11D628633}.Debug|iPhoneSimulator.ActiveCfg = Debug|Any CPU
+		{4B464370-C3EB-4838-AD84-BFF11D628633}.Debug|iPhoneSimulator.Build.0 = Debug|Any CPU
+		{4B464370-C3EB-4838-AD84-BFF11D628633}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{4B464370-C3EB-4838-AD84-BFF11D628633}.Release|iPhoneSimulator.Build.0 = Release|Any CPU
+		{4B464370-C3EB-4838-AD84-BFF11D628633}.Debug|iPhone.ActiveCfg = Debug|Any CPU
+		{4B464370-C3EB-4838-AD84-BFF11D628633}.Debug|iPhone.Build.0 = Debug|Any CPU
+		{4B464370-C3EB-4838-AD84-BFF11D628633}.Release|iPhone.ActiveCfg = Release|Any CPU
+		{4B464370-C3EB-4838-AD84-BFF11D628633}.Release|iPhone.Build.0 = Release|Any CPU
+		{885B0474-90D1-4C57-8AD7-7B0F3CB2E565}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{885B0474-90D1-4C57-8AD7-7B0F3CB2E565}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{885B0474-90D1-4C57-8AD7-7B0F3CB2E565}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{885B0474-90D1-4C57-8AD7-7B0F3CB2E565}.Release|Any CPU.Build.0 = Release|Any CPU
+		{885B0474-90D1-4C57-8AD7-7B0F3CB2E565}.Debug|iPhoneSimulator.ActiveCfg = Debug|Any CPU
+		{885B0474-90D1-4C57-8AD7-7B0F3CB2E565}.Debug|iPhoneSimulator.Build.0 = Debug|Any CPU
+		{885B0474-90D1-4C57-8AD7-7B0F3CB2E565}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{885B0474-90D1-4C57-8AD7-7B0F3CB2E565}.Release|iPhoneSimulator.Build.0 = Release|Any CPU
+		{885B0474-90D1-4C57-8AD7-7B0F3CB2E565}.Debug|iPhone.ActiveCfg = Debug|Any CPU
+		{885B0474-90D1-4C57-8AD7-7B0F3CB2E565}.Debug|iPhone.Build.0 = Debug|Any CPU
+		{885B0474-90D1-4C57-8AD7-7B0F3CB2E565}.Release|iPhone.ActiveCfg = Release|Any CPU
+		{885B0474-90D1-4C57-8AD7-7B0F3CB2E565}.Release|iPhone.Build.0 = Release|Any CPU
+		{947C30A2-849C-4D97-AD37-0E2366D0F456}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{947C30A2-849C-4D97-AD37-0E2366D0F456}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{947C30A2-849C-4D97-AD37-0E2366D0F456}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{947C30A2-849C-4D97-AD37-0E2366D0F456}.Release|Any CPU.Build.0 = Release|Any CPU
+		{947C30A2-849C-4D97-AD37-0E2366D0F456}.Debug|iPhoneSimulator.ActiveCfg = Debug|Any CPU
+		{947C30A2-849C-4D97-AD37-0E2366D0F456}.Debug|iPhoneSimulator.Build.0 = Debug|Any CPU
+		{947C30A2-849C-4D97-AD37-0E2366D0F456}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{947C30A2-849C-4D97-AD37-0E2366D0F456}.Release|iPhoneSimulator.Build.0 = Release|Any CPU
+		{947C30A2-849C-4D97-AD37-0E2366D0F456}.Debug|iPhone.ActiveCfg = Debug|Any CPU
+		{947C30A2-849C-4D97-AD37-0E2366D0F456}.Debug|iPhone.Build.0 = Debug|Any CPU
+		{947C30A2-849C-4D97-AD37-0E2366D0F456}.Release|iPhone.ActiveCfg = Release|Any CPU
+		{947C30A2-849C-4D97-AD37-0E2366D0F456}.Release|iPhone.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {CE885A8A-A7E6-4B1F-B67D-4F92FA75BBE7}
 	EndGlobalSection
+	GlobalSection(NestedProjects) = preSolution
+		{4F77CCCB-68DC-4CC7-A528-DB6FF48741D0} = {E58169B1-FD07-417D-98B3-46405BF552CB}
+		{B08F8340-7FAF-4AB2-A9DA-BA5B14FE5FDE} = {E58169B1-FD07-417D-98B3-46405BF552CB}
+		{23CBC56F-5494-435A-A040-222F66F8CC24} = {BAAC9093-C8DE-4FB7-A84C-DA72A058B55B}
+		{0CF8DD02-FE81-4B6A-BA6D-A64752361ECC} = {BAAC9093-C8DE-4FB7-A84C-DA72A058B55B}
+		{43EB5F9C-C7BE-48FA-8EBF-E3C87C4F3FE1} = {6E542EEB-D8E0-46B9-A0E5-06DBA6C9CFD2}
+		{885B0474-90D1-4C57-8AD7-7B0F3CB2E565} = {6E542EEB-D8E0-46B9-A0E5-06DBA6C9CFD2}
+		{4B464370-C3EB-4838-AD84-BFF11D628633} = {EAB717EF-2A1B-4AF5-8212-DDA8666150C8}
+		{947C30A2-849C-4D97-AD37-0E2366D0F456} = {EAB717EF-2A1B-4AF5-8212-DDA8666150C8}
+	EndGlobalSection
 EndGlobal

UndoAssessment/UndoAssessment.Android/MainActivity.cs

@@ -1,5 +1,5 @@
 using System;
-
+using Acr.UserDialogs;
 using Android.App;
 using Android.Content.PM;
 using Android.Runtime;
@@ -16,6 +16,7 @@ protected override void OnCreate(Bundle savedInstanceState)
 
             Xamarin.Essentials.Platform.Init(this, savedInstanceState);
             global::Xamarin.Forms.Forms.Init(this, savedInstanceState);
+            UserDialogs.Init(this);
             LoadApplication(new App());
         }
         public override void OnRequestPermissionsResult(int requestCode, string[] permissions, [GeneratedEnum] Android.Content.PM.Permission[] grantResults)

UndoAssessment/UndoAssessment.Api/Extensions/HttpExtensions.cs

@@ -0,0 +1,30 @@
+using System.Net.Http;
+using System.Text;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
+
+namespace UndoAssessment.Api.Extensions
+{
+    public static class HttpExtensions
+    {
+        public static HttpRequestBuilder CreateRequest(this HttpClient client)
+            => new HttpRequestBuilder(client);
+
+        public static HttpContent ToHttpContent(this object requestBody)
+        {
+            var result = default(HttpContent);
+
+            if (requestBody is HttpContent content)
+            {
+                result = content;
+            }
+            else
+            {
+                var jsonString = JsonConvert.SerializeObject(requestBody ?? new object(), new IsoDateTimeConverter());
+                result = new StringContent(jsonString, Encoding.UTF8, "application/json");
+            }
+
+            return result;
+        }
+    }
+}

UndoAssessment/UndoAssessment.Api/Extensions/HttpRequestBuilder.cs

@@ -0,0 +1,63 @@
+using System;
+using System.Diagnostics;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace UndoAssessment.Api.Extensions
+{
+    public class HttpRequestBuilder
+    {
+        private readonly HttpClient _client;
+
+        private HttpRequestMessage _buildingRequest;
+        private CancellationToken _cancellationToken;
+
+        public HttpRequestBuilder(HttpClient client)
+        {
+            _client = client;
+
+            _buildingRequest = new HttpRequestMessage();
+        }
+
+        public HttpRequestBuilder ByResource(string address, string resource, params object[] parameters)
+        {
+            var url = address + string.Format(resource, parameters);
+            _buildingRequest.RequestUri = new Uri(url);
+            return this;
+        }
+
+        public HttpRequestBuilder WithMethod(HttpMethod method)
+        {
+            _buildingRequest.Method = method;
+            return this;
+        }
+
+        public HttpRequestBuilder WithContent(object content)
+        {
+            _buildingRequest.Content = content.ToHttpContent();
+            return this;
+        }
+
+        public HttpRequestBuilder WithHeader(string type, string val)
+        {
+            _buildingRequest.Headers.Add(type, val);
+            return this;
+        }
+
+        public async Task<HttpResponseMessage> MakeRequestAsync()
+        {
+            try
+            {
+                return await _client.SendAsync(_buildingRequest, _cancellationToken);
+            }
+            catch (Exception e)
+            {
+                if (Debugger.IsAttached)
+                    Debugger.Break();
+                Console.WriteLine(e);
+                throw;
+            }
+        }
+    }
+}

UndoAssessment/UndoAssessment.Api/Extensions/HttpResponseMessageExtensions.cs

@@ -0,0 +1,17 @@
+using System.Net.Http;
+using System.Threading.Tasks;
+
+namespace UndoAssessment.Api.Extensions
+{
+    public static class HttpResponseMessageExtensions
+    {
+        public static async Task<T> ReadContentAsJsonAsync<T>(this Task<HttpResponseMessage> taskMessage)
+            => await (await taskMessage).ReadContentAsJsonAsync<T>();
+
+        public static async Task<T> ReadContentAsJsonAsync<T>(this HttpResponseMessage message)
+            => (await message.ReadAsStringAsync()).ParseAsJson<T>();
+
+        public static Task<string> ReadAsStringAsync(this HttpResponseMessage message)
+            => message.Content.ReadAsStringAsync();
+    }
+}

UndoAssessment/UndoAssessment.Api/Extensions/StringExtensions.cs

@@ -0,0 +1,11 @@
+using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
+
+namespace UndoAssessment.Api.Extensions
+{
+    public static class StringExtensions
+    {
+        public static T ParseAsJson<T>(this string str)
+            => JsonConvert.DeserializeObject<T>(str, converters: new JsonConverter[] { new IsoDateTimeConverter() });
+    }
+}

UndoAssessment/UndoAssessment.Api/IApiService.cs

@@ -0,0 +1,11 @@
+using System.Threading.Tasks;
+using UndoAssessment.Common.Models;
+
+namespace UndoAssessment.Api
+{
+    public interface IApiService
+    {
+        Task<ApiResponse> SuccessAsync();
+        Task<ApiResponse> ErrorAsync();
+    }
+}

UndoAssessment/UndoAssessment.Api/TaskApiService.cs

@@ -0,0 +1,35 @@
+using System.Net.Http;
+using System.Threading.Tasks;
+using UndoAssessment.Api.Extensions;
+using UndoAssessment.Common.Models;
+
+namespace UndoAssessment.Api
+{
+    public class TaskApiService : IApiService
+    {
+        private const string ApiEndpoint = "https://malkarakundostagingpublicapi.azurewebsites.net";
+
+        private readonly HttpClient _client;
+
+        public TaskApiService()
+        {
+            _client = new HttpClient();
+        }
+
+        public Task<ApiResponse> SuccessAsync()
+            => _client
+                .CreateRequest()
+                .ByResource(ApiEndpoint, "/success")
+                .WithMethod(HttpMethod.Get)
+                .MakeRequestAsync()
+                .ReadContentAsJsonAsync<ApiResponse>();
+
+        public Task<ApiResponse> ErrorAsync()
+            => _client
+                .CreateRequest()
+                .ByResource(ApiEndpoint, "/fail")
+                .WithMethod(HttpMethod.Get)
+                .MakeRequestAsync()
+                .ReadContentAsJsonAsync<ApiResponse>();
+    }
+}

UndoAssessment/UndoAssessment.Api/UndoAssessment.Api.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>netstandard2.0</TargetFramework>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\UndoAssessment.Common\UndoAssessment.Common.csproj" />
+    </ItemGroup>
+</Project>

UndoAssessment/UndoAssessment.Common/Models/ApiResponse.cs

@@ -0,0 +1,21 @@
+using System;
+
+namespace UndoAssessment.Common.Models
+{
+    public class ApiResponse
+    {
+        public string Message { get; set; }
+        public DateTime Date { get; set; }
+        public int ErrorCode { get; set; }
+
+        public override string ToString()
+        {
+            var errorLine = ErrorCode > 0 ? $"ErrorCode: {ErrorCode}" : "";
+            return
+                $"Message: {Message}\n" +
+                $"Date: {Date.ToString()}\n" +
+                errorLine;
+
+        }
+    }
+}

UndoAssessment/UndoAssessment/Models/Item.cs → UndoAssessment/UndoAssessment.Common/Models/Item.cs

@@ -1,6 +1,4 @@
-using System;
-
-namespace UndoAssessment.Models
+namespace UndoAssessment.Common.Models
 {
     public class Item
     {

UndoAssessment/UndoAssessment.Common/Models/UserData.cs

@@ -0,0 +1,8 @@
+namespace UndoAssessment.Common.Models
+{
+    public class UserData
+    {
+        public string Name { get; set; }
+        public int Age { get; set; }
+    }
+}

UndoAssessment/UndoAssessment.Common/Navigation/INavigationService.cs

@@ -0,0 +1,12 @@
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace UndoAssessment.Common.Navigation
+{
+    public interface INavigationService
+    {
+        Task NavigateToRootAsync(string tag, params KeyValuePair<string, object>[] parameters);
+        Task NavigateAsync(string tag, params KeyValuePair<string, object>[] parameters);
+        Task NavigateBackAsync(params KeyValuePair<string, object>[] parameters);
+    }
+}