Add ASP.NET Core Integration for Text analytics (#10984)

* add client builder extensions

* changelog

sdk/textanalytics/Azure.AI.TextAnalytics/CHANGELOG.md

@@ -9,6 +9,7 @@
 ### Added
 - Refactor common properties from `DetectLanguageInput` and `TextDocumentInput` into it's own type `TextAnalyticsInput`.
 - Mock support for the Text Analytics client with respective samples.
+- Integration for ASP.NET Core.
 
 ## 1.0.0-preview.3 (2020-03-10)
 ### Breaking changes

sdk/textanalytics/Azure.AI.TextAnalytics/src/TextAnalyticsClientBuilderExtensions.cs

@@ -0,0 +1,43 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+using System;
+using Azure;
+using Azure.AI.TextAnalytics;
+using Azure.Core.Extensions;
+
+namespace Microsoft.Extensions.Azure
+{
+    /// <summary>
+    /// Extension methods to add <see cref="TextAnalyticsClient"/> client to clients builder.
+    /// </summary>
+    public static class TextAnalyticsClientBuilderExtensions
+    {
+        /// <summary>
+        /// Registers a <see cref="TextAnalyticsClient"/> instance with the provided <paramref name="endpoint"/>.
+        /// </summary>
+        public static IAzureClientBuilder<TextAnalyticsClient, TextAnalyticsClientOptions> AddTextAnalyticsClient<TBuilder>(this TBuilder builder, Uri endpoint)
+            where TBuilder : IAzureClientFactoryBuilderWithCredential
+        {
+            return builder.RegisterClientFactory<TextAnalyticsClient, TextAnalyticsClientOptions>((options, credential) => new TextAnalyticsClient(endpoint, credential, options));
+        }
+
+        /// <summary>
+        /// Registers a <see cref="TextAnalyticsClient"/> instance with the provided <paramref name="endpoint"/> and <paramref name="credential"/>.
+        /// </summary>
+        public static IAzureClientBuilder<TextAnalyticsClient, TextAnalyticsClientOptions> AddTextAnalyticsClient<TBuilder>(this TBuilder builder, Uri endpoint, AzureKeyCredential credential)
+            where TBuilder : IAzureClientFactoryBuilder
+        {
+            return builder.RegisterClientFactory<TextAnalyticsClient, TextAnalyticsClientOptions>(options => new TextAnalyticsClient(endpoint, credential, options));
+        }
+
+        /// <summary>
+        /// Registers a <see cref="TextAnalyticsClient"/> instance with connection options loaded from the provided <paramref name="configuration"/> instance.
+        /// </summary>
+        public static IAzureClientBuilder<TextAnalyticsClient, TextAnalyticsClientOptions> AddTextAnalyticsClient<TBuilder, TConfiguration>(this TBuilder builder, TConfiguration configuration)
+            where TBuilder : IAzureClientFactoryBuilderWithConfiguration<TConfiguration>
+        {
+            return builder.RegisterClientFactory<TextAnalyticsClient, TextAnalyticsClientOptions>(configuration);
+        }
+    }
+}