More AuthService Features

Author: mckaragoz

GoogleApis.Blazor/AllEnums.cs

@@ -2,17 +2,6 @@
 #pragma warning disable CS1591
 namespace GoogleApis.Blazor
 {
-    public static class EnumExtensions
-    {
-        public static string ToDescriptionString(this Enum val)
-        {
-            var attributes = (DescriptionAttribute[])val.GetType().GetField(val.ToString()).GetCustomAttributes(typeof(DescriptionAttribute), false);
-
-            return attributes.Length > 0
-                ? attributes[0].Description
-                : val.ToString();
-        }
-    }
 
     public enum Scope
     {

GoogleApis.Blazor/Auth/AuthService.cs

@@ -1,4 +1,6 @@
-using Microsoft.AspNetCore.Components;
+using GoogleApis.Blazor.Extensions;
+using Microsoft.AspNetCore.Components;
+using Microsoft.Extensions.Configuration;
 using Microsoft.JSInterop;
 using System;
 using System.Collections.Generic;
@@ -19,16 +21,19 @@ public class AuthService
     {
         [Inject] IHttpClientFactory HttpClientFactory { get; set; }
         [Inject] IJSRuntime JSRuntime { get; set; }
+        [Inject] IConfiguration Configuration { get; set; }
 
         /// <summary>
         /// Constructs the class.
         /// </summary>
         /// <param name="jsRuntime"></param>
         /// <param name="httpClientFactory"></param>
-        public AuthService(IJSRuntime jsRuntime, IHttpClientFactory httpClientFactory)
+        /// <param name="configuration"></param>
+        public AuthService(IJSRuntime jsRuntime, IHttpClientFactory httpClientFactory, IConfiguration configuration)
         {
             JSRuntime = jsRuntime;
             HttpClientFactory = httpClientFactory;
+            Configuration = configuration;
         }
 
         /// <summary>
@@ -77,6 +82,81 @@ public string AuthorizeCredential(string authorizationCode, string clientId, str
             return request.Content.ReadAsStringAsync().Result;
         }
 
+        /// <summary>
+        /// Refresh and create new access token with given resfresh token.
+        /// </summary>
+        /// <param name="refreshToken"></param>
+        /// <param name="clientId"></param>
+        /// <param name="clientSecret"></param>
+        /// <param name="redirectUrl"></param>
+        /// <returns></returns>
+        public string RefreshAccessToken(string refreshToken, string clientId, string clientSecret, string redirectUrl)
+        {
+            string encodedRedirectUrl = HttpUtility.UrlEncode(redirectUrl);
+
+            var client = HttpClientFactory.CreateClient();
+            client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/x-www-form-urlencoded"));
+            var content = new StringContent($"refresh_token={refreshToken}&client_id={clientId}&client_secret={clientSecret}&redirect_uri={encodedRedirectUrl}&scope=&grant_type=refresh_token", Encoding.UTF8, "application/x-www-form-urlencoded");
+
+            var request = client.PostAsync("https://oauth2.googleapis.com/token", content).Result;
+
+            var result = request.Content.ReadAsStringAsync().Result;
+
+            var jsonResult = JsonDocument.Parse(result);
+            string accessToken = jsonResult.RootElement.GetProperty("access_token").ToString();
+
+            return accessToken;
+        }
+
+        /// <summary>
+        /// Get client id. Only works when client id stored in appsettings.json. You can choose the root value that google credentials stored.
+        /// </summary>
+        /// <param name="rootValue"></param>
+        /// <returns></returns>
+        public string GetClientId(string rootValue = "GoogleClient")
+        {
+            return Configuration.GetSection(rootValue).GetSection("client_id").Value;
+        }
+
+        /// <summary>
+        /// Get client secret. Only works when client id stored in appsettings.json. You can choose the root value that google credentials stored.
+        /// </summary>
+        /// <param name="rootValue"></param>
+        /// <returns></returns>
+        public string GetClientSecret(string rootValue = "GoogleClient")
+        {
+            return Configuration.GetSection(rootValue).GetSection("client_secret").Value;
+        }
+
+        /// <summary>
+        /// Get project id. Only works when client id stored in appsettings.json. You can choose the root value that google credentials stored.
+        /// </summary>
+        /// <param name="rootValue"></param>
+        /// <returns></returns>
+        public string GetProjectId(string rootValue = "GoogleClient")
+        {
+            return Configuration.GetSection(rootValue).GetSection("project_id").Value;
+        }
+
+        /// <summary>
+        /// Gets access token expired or not with given content result. Most of the methods' result can be the contentResult parameter directly.
+        /// </summary>
+        /// <param name="contentResult"></param>
+        /// <returns></returns>
+        public bool IsAccessTokenExpired(string contentResult)
+        {
+            var jsonResult = JsonDocument.Parse(contentResult);
+            string errorMessage = jsonResult.RootElement.GetPropertyExtension("error")?.GetProperty("errors")[0].GetProperty("message").ToString();
+            string errorReason = jsonResult.RootElement.GetPropertyExtension("error")?.GetProperty("errors")[0].GetProperty("reason").ToString();
+
+            if (errorMessage == "Invalid Credentials" || errorReason == "authError")
+            {
+                return true;
+            }
+
+            return false;
+        }
+
         /// <summary>
         /// Get authenticated user's e-mail adress.
         /// </summary>

GoogleApis.Blazor/Extensions/EnumExtension.cs

@@ -0,0 +1,17 @@
+#pragma warning disable CS1591
+using System.ComponentModel;
+
+namespace GoogleApis.Blazor.Extensions
+{
+    public static class EnumExtensions
+    {
+        public static string ToDescriptionString(this Enum val)
+        {
+            var attributes = (DescriptionAttribute[])val.GetType().GetField(val.ToString()).GetCustomAttributes(typeof(DescriptionAttribute), false);
+
+            return attributes.Length > 0
+                ? attributes[0].Description
+                : val.ToString();
+        }
+    }
+}

GoogleApis.Blazor/Extensions/JsonElementExtension.cs

@@ -0,0 +1,17 @@
+using System.Text.Json;
+#pragma warning disable CS1591
+namespace GoogleApis.Blazor.Extensions
+{
+    public static class JsonElementExtenstion
+    {
+        public static JsonElement? GetPropertyExtension(this JsonElement jsonElement, string propertyName)
+        {
+            if (jsonElement.TryGetProperty(propertyName, out JsonElement returnElement))
+            {
+                return returnElement;
+            }
+
+            return null;
+        }
+    }
+}

GoogleApis.Blazor/GoogleApis.Blazor.csproj

@@ -27,6 +27,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.Components" Version="6.0.4" />
+    <PackageReference Include="Microsoft.Extensions.Configuration" Version="6.0.1" />
     <PackageReference Include="Microsoft.Extensions.Http" Version="6.0.0" />
     <PackageReference Include="Microsoft.JSInterop" Version="6.0.4" />
   </ItemGroup>