From 0aab013ea995184f21646a1302b1084110bd3b43 Mon Sep 17 00:00:00 2001
From: pramodaya <pramodayajayalath@gmail.com>
Date: Sun, 16 Jul 2023 22:47:57 +0200
Subject: [PATCH] User detail and 2 API call for success and failed added

---
 .../Resources/Resource.designer.cs            |   2 +-
 .../UndoAssessment.Android.csproj             |   7 ++
 UndoAssessment/UndoAssessment/AppShell.xaml   |   1 +
 .../Core/Exceptions/ApiRequestException.cs    |  11 ++
 .../Helpers/ApiRequestHandler.cs              |  31 +++++
 .../Helpers/ValidationHelper.cs               |  19 +++
 .../UndoAssessment/Models/ApiResponseModel.cs |  19 +++
 .../UndoAssessment/Models/UserModel.cs        |   8 ++
 .../UndoAssessment/Services/ApiService.cs     |  21 ++++
 .../Services/Base/BaseApiService.cs           |  47 ++++++++
 .../UndoAssessment/UndoAssessment.csproj      |  14 +++
 .../ViewModels/ApiPageViewModel.cs            | 114 ++++++++++++++++++
 .../UndoAssessment/Views/ApiPage.xaml         |  31 +++++
 .../UndoAssessment/Views/ApiPage.xaml.cs      |  38 ++++++
 14 files changed, 362 insertions(+), 1 deletion(-)
 create mode 100644 UndoAssessment/UndoAssessment/Core/Exceptions/ApiRequestException.cs
 create mode 100644 UndoAssessment/UndoAssessment/Helpers/ApiRequestHandler.cs
 create mode 100644 UndoAssessment/UndoAssessment/Helpers/ValidationHelper.cs
 create mode 100644 UndoAssessment/UndoAssessment/Models/ApiResponseModel.cs
 create mode 100644 UndoAssessment/UndoAssessment/Models/UserModel.cs
 create mode 100644 UndoAssessment/UndoAssessment/Services/ApiService.cs
 create mode 100644 UndoAssessment/UndoAssessment/Services/Base/BaseApiService.cs
 create mode 100644 UndoAssessment/UndoAssessment/ViewModels/ApiPageViewModel.cs
 create mode 100644 UndoAssessment/UndoAssessment/Views/ApiPage.xaml
 create mode 100644 UndoAssessment/UndoAssessment/Views/ApiPage.xaml.cs

diff --git a/UndoAssessment/UndoAssessment.Android/Resources/Resource.designer.cs b/UndoAssessment/UndoAssessment.Android/Resources/Resource.designer.cs
index ca95bb7..1017af2 100644
--- a/UndoAssessment/UndoAssessment.Android/Resources/Resource.designer.cs
+++ b/UndoAssessment/UndoAssessment.Android/Resources/Resource.designer.cs
@@ -15,7 +15,7 @@ namespace UndoAssessment.Droid
 {
 	
 	
-	[global::System.CodeDom.Compiler.GeneratedCodeAttribute("Xamarin.Android.Build.Tasks", "13.2.0.93")]
+	[global::System.CodeDom.Compiler.GeneratedCodeAttribute("Xamarin.Android.Build.Tasks", "13.2.0.99")]
 	public partial class Resource
 	{
 		
diff --git a/UndoAssessment/UndoAssessment.Android/UndoAssessment.Android.csproj b/UndoAssessment/UndoAssessment.Android/UndoAssessment.Android.csproj
index 5c6316d..b984615 100644
--- a/UndoAssessment/UndoAssessment.Android/UndoAssessment.Android.csproj
+++ b/UndoAssessment/UndoAssessment.Android/UndoAssessment.Android.csproj
@@ -43,6 +43,13 @@
     <WarningLevel>4</WarningLevel>
     <AndroidManagedSymbols>true</AndroidManagedSymbols>
     <EmbedAssembliesIntoApk>true</EmbedAssembliesIntoApk>
+    <CustomCommands>
+      <CustomCommands>
+        <Command>
+          <type>Build</type>
+        </Command>
+      </CustomCommands>
+    </CustomCommands>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="Mono.Android" />
diff --git a/UndoAssessment/UndoAssessment/AppShell.xaml b/UndoAssessment/UndoAssessment/AppShell.xaml
index 9b3603b..fce1b12 100644
--- a/UndoAssessment/UndoAssessment/AppShell.xaml
+++ b/UndoAssessment/UndoAssessment/AppShell.xaml
@@ -32,6 +32,7 @@
     <TabBar>
         <ShellContent Title="About" Icon="icon_about.png" Route="AboutPage" ContentTemplate="{DataTemplate local:AboutPage}" />
         <ShellContent Title="Browse" Icon="icon_feed.png" ContentTemplate="{DataTemplate local:ItemsPage}" />
+        <ShellContent Title="Test" Icon="icon_feed.png" ContentTemplate="{DataTemplate local:ApiPage}" />
     </TabBar>
 
     <!--
diff --git a/UndoAssessment/UndoAssessment/Core/Exceptions/ApiRequestException.cs b/UndoAssessment/UndoAssessment/Core/Exceptions/ApiRequestException.cs
new file mode 100644
index 0000000..d5acd32
--- /dev/null
+++ b/UndoAssessment/UndoAssessment/Core/Exceptions/ApiRequestException.cs
@@ -0,0 +1,11 @@
+using System;
+
+namespace UndoAssessment.Services
+{
+    public class ApiRequestException : Exception
+    {
+        public ApiRequestException(string message) : base(message)
+        {
+        }
+    }
+}
diff --git a/UndoAssessment/UndoAssessment/Helpers/ApiRequestHandler.cs b/UndoAssessment/UndoAssessment/Helpers/ApiRequestHandler.cs
new file mode 100644
index 0000000..94ec4e9
--- /dev/null
+++ b/UndoAssessment/UndoAssessment/Helpers/ApiRequestHandler.cs
@@ -0,0 +1,31 @@
+using System;
+using System.Threading.Tasks;
+using UndoAssessment.Models;
+using UndoAssessment.Services;
+using Xamarin.Forms;
+
+namespace UndoAssessment.Helpers
+{
+    public static class ApiRequestHandler
+    {
+        public static async Task DisplaySuccessMessage(ApiResponseModel apiResponseModel)
+        {
+            await Application.Current.MainPage.DisplayAlert("Success", apiResponseModel.Message, "OK");
+        }
+
+        public static async Task DisplayErrorMessage(ApiResponseModel apiResponseModel)
+        {
+            await Application.Current.MainPage.DisplayAlert("API Error", apiResponseModel.Message, "OK");
+        }
+
+        public static async Task DisplayApiErrorMessage(string message)
+        {
+            await Application.Current.MainPage.DisplayAlert("API Error", message, "OK");
+        }
+
+        public static async Task HandleApiRequestException(ApiRequestException ex)
+        {
+            await Application.Current.MainPage.DisplayAlert("API Error", ex.Message, "OK");
+        }
+    }
+}
diff --git a/UndoAssessment/UndoAssessment/Helpers/ValidationHelper.cs b/UndoAssessment/UndoAssessment/Helpers/ValidationHelper.cs
new file mode 100644
index 0000000..b8570f6
--- /dev/null
+++ b/UndoAssessment/UndoAssessment/Helpers/ValidationHelper.cs
@@ -0,0 +1,19 @@
+using System.Linq;
+
+namespace UndoAssessment.Helpers
+{
+    public static class ValidationHelper
+    {
+        public static bool IsNameValid(string name)
+        {
+            // For example, check for illegal characters or minimum length
+            return !string.IsNullOrWhiteSpace(name);
+        }
+
+        public static bool IsAgeValid(string age)
+        {
+            // For example, check if it's a numeric value or within a certain range
+            return int.TryParse(age, out _) && !string.IsNullOrWhiteSpace(age);
+        }
+    }
+}
diff --git a/UndoAssessment/UndoAssessment/Models/ApiResponseModel.cs b/UndoAssessment/UndoAssessment/Models/ApiResponseModel.cs
new file mode 100644
index 0000000..d9bd56a
--- /dev/null
+++ b/UndoAssessment/UndoAssessment/Models/ApiResponseModel.cs
@@ -0,0 +1,19 @@
+using System;
+using Newtonsoft.Json;
+
+namespace UndoAssessment.Models
+{
+    public class ApiResponseModel
+    {
+        [JsonProperty("errorCode")]
+        public int ErrorCode { get; set; }
+
+        [JsonProperty("message")]
+        public string Message { get; set; }
+
+        [JsonProperty("date")]
+        public string Date { get; set; }
+    }
+
+}
+
diff --git a/UndoAssessment/UndoAssessment/Models/UserModel.cs b/UndoAssessment/UndoAssessment/Models/UserModel.cs
new file mode 100644
index 0000000..1fe0099
--- /dev/null
+++ b/UndoAssessment/UndoAssessment/Models/UserModel.cs
@@ -0,0 +1,8 @@
+namespace UndoAssessment.Models
+{
+    public class UserModel
+    {
+        public string Name { get; set; }
+        public string Age { get; set; }
+    }
+}
diff --git a/UndoAssessment/UndoAssessment/Services/ApiService.cs b/UndoAssessment/UndoAssessment/Services/ApiService.cs
new file mode 100644
index 0000000..161ae82
--- /dev/null
+++ b/UndoAssessment/UndoAssessment/Services/ApiService.cs
@@ -0,0 +1,21 @@
+using System.Threading.Tasks;
+using UndoAssessment.Models;
+using UndoAssessment.Services.Base;
+
+namespace UndoAssessment.Services
+{
+    public class ApiService : BaseApiService
+    {
+        public async Task<ApiResponseModel> InvokeSuccessEndpoint()
+        {
+            var response = await InvokeEndpoint("https://malkarakundostagingpublicapi.azurewebsites.net/success");
+            return ExtractApiResponse(response);
+        }
+
+        public async Task<ApiResponseModel> InvokeFailEndpoint()
+        {
+            var response = await InvokeEndpoint("https://malkarakundostagingpublicapi.azurewebsites.net/fail");
+            return ExtractApiResponse(response);
+        }
+    }
+}
diff --git a/UndoAssessment/UndoAssessment/Services/Base/BaseApiService.cs b/UndoAssessment/UndoAssessment/Services/Base/BaseApiService.cs
new file mode 100644
index 0000000..aed4d5f
--- /dev/null
+++ b/UndoAssessment/UndoAssessment/Services/Base/BaseApiService.cs
@@ -0,0 +1,47 @@
+using System;
+using System.Net.Http;
+using System.Threading.Tasks;
+using Newtonsoft.Json;
+using UndoAssessment.Models;
+
+namespace UndoAssessment.Services.Base
+{
+    public class BaseApiService
+    {
+        protected async Task<string> InvokeEndpoint(string url)
+        {
+            try
+            {
+                var httpClient = new HttpClient();
+                var response = await httpClient.GetAsync(url);
+
+                var content = await response.Content.ReadAsStringAsync();
+                return content;
+            }
+            catch (HttpRequestException ex)
+            {
+                var content = ex.Message;
+                throw new ApiRequestException(content);
+            }
+        }
+
+        protected ApiResponseModel ExtractApiResponse(string response)
+        {
+            try
+            {
+                var apiResponse = JsonConvert.DeserializeObject<ApiResponseModel>(response);
+                return apiResponse;
+            }
+            catch (JsonException ex)
+            {
+                Console.WriteLine($"Failed to deserialize API response: {ex.Message}");
+                return null;
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"Failed to extract API response: {ex.Message}");
+                return null;
+            }
+        }
+    }
+}
diff --git a/UndoAssessment/UndoAssessment/UndoAssessment.csproj b/UndoAssessment/UndoAssessment/UndoAssessment.csproj
index 95a3587..b9fc685 100644
--- a/UndoAssessment/UndoAssessment/UndoAssessment.csproj
+++ b/UndoAssessment/UndoAssessment/UndoAssessment.csproj
@@ -3,10 +3,24 @@
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
     <ProduceReferenceAssembly>true</ProduceReferenceAssembly>
+    <BuildWithMSBuildOnMono>true</BuildWithMSBuildOnMono>
   </PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="Xamarin.Forms" Version="5.0.0.2578" />  
     <PackageReference Include="Xamarin.Essentials" Version="1.7.6" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Remove="Helpers\" />
+    <None Remove="Services\Base\" />
+    <None Remove="Core\" />
+    <None Remove="Core\Exceptions\" />
+  </ItemGroup>
+  <ItemGroup>
+    <Folder Include="Helpers\" />
+    <Folder Include="Services\Base\" />
+    <Folder Include="Core\" />
+    <Folder Include="Core\Exceptions\" />
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/UndoAssessment/UndoAssessment/ViewModels/ApiPageViewModel.cs b/UndoAssessment/UndoAssessment/ViewModels/ApiPageViewModel.cs
new file mode 100644
index 0000000..8ec4d8a
--- /dev/null
+++ b/UndoAssessment/UndoAssessment/ViewModels/ApiPageViewModel.cs
@@ -0,0 +1,114 @@
+using System;
+using System.ComponentModel;
+using System.Linq;
+using System.Runtime.CompilerServices;
+using System.Threading.Tasks;
+using UndoAssessment.Helpers;
+using UndoAssessment.Models;
+using UndoAssessment.Services;
+using Xamarin.Forms;
+
+namespace UndoAssessment.ViewModels
+{
+    public class ApiPageViewModel : INotifyPropertyChanged
+    {
+        private UserModel _user;
+        public UserModel User
+        {
+            get { return _user; }
+            set
+            {
+                _user = value;
+                OnPropertyChanged(nameof(User));
+            }
+        }
+
+        private bool _isUserInformationVisible;
+        public bool IsUserInformationVisible
+        {
+            get { return _isUserInformationVisible; }
+            set
+            {
+                _isUserInformationVisible = value;
+                OnPropertyChanged(nameof(IsUserInformationVisible));
+            }
+        }
+
+        private readonly ApiService _apiService;
+
+        public ApiPageViewModel()
+        {
+            _apiService = new ApiService();
+            User = new UserModel(); 
+            IsUserInformationVisible = false;
+        }
+
+
+        public async Task InvokeSuccessEndpoint()
+        {
+            try
+            {
+                var response = await _apiService.InvokeSuccessEndpoint();
+                await ApiRequestHandler.DisplaySuccessMessage(response);
+            }
+            catch (ApiRequestException ex)
+            {
+                await ApiRequestHandler.HandleApiRequestException(ex);
+            }
+        }
+
+        public async Task InvokeFailEndpoint()
+        {
+            try
+            {
+                var response = await _apiService.InvokeFailEndpoint();
+                await ApiRequestHandler.DisplayErrorMessage(response);
+            }
+            catch (ApiRequestException ex)
+            {
+                await ApiRequestHandler.HandleApiRequestException(ex);
+            }
+        }
+
+
+
+
+        public async Task AddUserInformation()
+        {
+            var name = await Application.Current.MainPage.DisplayPromptAsync("User Information", "Enter your name");
+            var age = await Application.Current.MainPage.DisplayPromptAsync("User Information", "Enter your age");
+
+            if (!string.IsNullOrWhiteSpace(name) && !string.IsNullOrWhiteSpace(age))
+            {
+                // Validate age
+                if (!ValidationHelper.IsAgeValid(age))
+                {
+                    await Application.Current.MainPage.DisplayAlert("Error", "Invalid age. Please enter a numeric value for age.", "OK");
+                    return;
+                }
+
+                // Validate name
+                if (!ValidationHelper.IsNameValid(name))
+                {
+                    await Application.Current.MainPage.DisplayAlert("Error", "Invalid name. Please enter a valid name.", "OK");
+                    return;
+                }
+
+                User.Name = name;
+                User.Age = age;
+                IsUserInformationVisible = true;
+
+                OnPropertyChanged(nameof(User));
+            }
+        }
+
+      
+
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
+        {
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+        }
+    }
+}
diff --git a/UndoAssessment/UndoAssessment/Views/ApiPage.xaml b/UndoAssessment/UndoAssessment/Views/ApiPage.xaml
new file mode 100644
index 0000000..7b84da2
--- /dev/null
+++ b/UndoAssessment/UndoAssessment/Views/ApiPage.xaml
@@ -0,0 +1,31 @@
+<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             xmlns:viewmodels="clr-namespace:UndoAssessment.ViewModels;assembly=UndoAssessment"
+             x:Class="UndoAssessment.Views.ApiPage"
+             Padding="25">
+    <ContentPage.BindingContext>
+        <viewmodels:ApiPageViewModel />
+    </ContentPage.BindingContext>
+    <StackLayout Padding="20">
+        <StackLayout HorizontalOptions="End">
+            <Button Text="Add User Information"
+                    Clicked="OnAddUserButtonClicked" />
+        </StackLayout>
+
+        <StackLayout VerticalOptions="CenterAndExpand">
+            <StackLayout x:Name="userDataLayout" IsVisible="{Binding IsUserInformationVisible}">
+                <Label Text="User Information" FontAttributes="Bold" />
+                <Label Text="{Binding User.Name, Mode=TwoWay}" />
+                <Label Text="{Binding User.Age, Mode=TwoWay}" />
+            </StackLayout>
+        </StackLayout>
+
+        <StackLayout HorizontalOptions="End">
+            <Button Text="Invoke Success Endpoint"
+                    Clicked="OnSuccessButtonClicked" />
+            <Button Text="Invoke Fail Endpoint"
+                    Clicked="OnFailButtonClicked" />
+        </StackLayout>
+
+    </StackLayout>
+</ContentPage>
diff --git a/UndoAssessment/UndoAssessment/Views/ApiPage.xaml.cs b/UndoAssessment/UndoAssessment/Views/ApiPage.xaml.cs
new file mode 100644
index 0000000..7026a2f
--- /dev/null
+++ b/UndoAssessment/UndoAssessment/Views/ApiPage.xaml.cs
@@ -0,0 +1,38 @@
+using System;
+using UndoAssessment.ViewModels;
+using Xamarin.Forms;
+using Xamarin.Forms.Xaml;
+using UndoAssessment.Models;
+
+namespace UndoAssessment.Views
+{
+    [XamlCompilation(XamlCompilationOptions.Compile)]
+    public partial class ApiPage : ContentPage
+    {
+        private ApiPageViewModel _viewModel;
+
+        public ApiPage()
+        {
+            InitializeComponent();
+            _viewModel = new ApiPageViewModel();
+            BindingContext = _viewModel;
+        }
+
+        private async void OnSuccessButtonClicked(object sender, EventArgs e)
+        {
+            await _viewModel.InvokeSuccessEndpoint();
+        }
+
+        private async void OnFailButtonClicked(object sender, EventArgs e)
+        {
+            await _viewModel.InvokeFailEndpoint();
+        }
+
+        private async void OnAddUserButtonClicked(object sender, EventArgs e)
+        {
+            await _viewModel.AddUserInformation();
+            userDataLayout.IsVisible = !string.IsNullOrWhiteSpace(_viewModel.User.Name) || !string.IsNullOrWhiteSpace(_viewModel.User.Age);
+            Console.WriteLine("--------------------");
+        }
+    }
+}