Added DI helpers. Thanks @gjkaal! (#12)

Author: RobThree

SimpleFeedReader/BuilderConfiguration.cs

@@ -0,0 +1,22 @@
+using Microsoft.Extensions.DependencyInjection;
+
+namespace SimpleFeedReader;
+
+/// <summary>
+/// Extension methods for configuring the feed reader service.
+/// </summary>
+public static class BuilderConfiguration
+{
+    /// <summary>
+    /// Add the feed reader service to your application.
+    /// </summary>
+    /// <param name="services">The service collection to add the feed reader to.</param>
+    /// <param name="options">The options to configure the feed reader.</param>
+    public static IServiceCollection AddFeedReader(this IServiceCollection services, Func<FeedReaderOptions> options)
+    {
+        var setup = options?.Invoke() ?? new FeedReaderOptions();
+
+        services.AddSingleton<IFeedReader>(new FeedReader(setup));
+        return services;
+    }
+}

SimpleFeedReader/FeedReader.cs

@@ -70,6 +70,15 @@ public FeedReader(bool throwOnError, HttpClient? httpClient = null)
     public FeedReader(IFeedItemNormalizer defaultFeedItemNormalizer, HttpClient? httpClient = null)
         : this(defaultFeedItemNormalizer, false, httpClient) { }
 
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="FeedReader"/> class.
+    /// </summary>
+    /// <param name="options">Initialization options.</param>
+    public FeedReader(FeedReaderOptions options)
+        : this(options.DefaultNormalizer, options.ThrowOnError) { }
+
+
     /// <inheritdoc/>
     public Task<IEnumerable<FeedItem>> RetrieveFeedsAsync(IEnumerable<string> uris, CancellationToken cancellationToken = default)
         => RetrieveFeedsAsync(uris, DefaultNormalizer, cancellationToken);

SimpleFeedReader/FeedReaderOptions.cs

@@ -0,0 +1,23 @@
+using System.Net.Http;
+using System.ServiceModel.Syndication;
+
+namespace SimpleFeedReader;
+
+/// <summary>
+/// Options to configure the <see cref="FeedReader"/>.
+/// </summary>
+public class FeedReaderOptions
+{
+    /// <summary>
+    /// The default normalizer to use when normalizing <see cref="SyndicationItem"/>s.
+    /// </summary>
+    public IFeedItemNormalizer DefaultNormalizer { get; set; } = new DefaultFeedItemNormalizer();
+    /// <summary>
+    /// When true, the <see cref="FeedReader"/> will throw on errors.
+    /// </summary>
+    public bool ThrowOnError { get; set; } = false;
+    /// <summary>
+    /// When you want to use a custom <see cref="HttpClient"/> you can set it through here.
+    /// </summary>
+    public HttpClient? HttpClient { get; set; } = null;
+}

SimpleFeedReader/SimpleFeedReader.csproj

@@ -34,6 +34,7 @@
 	</ItemGroup>
 
 	<ItemGroup>
+	  <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="9.0.2" />
 	  <PackageReference Include="PolySharp" Version="1.15.0">
 	    <PrivateAssets>all</PrivateAssets>
 	    <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>