Added Logger interface & Simple Logger implementation

SpotifyAPI.Web.Tests/Http/APIConnectorTest.cs

@@ -41,7 +41,8 @@ namespace SpotifyAPI.Web.Tests
         authenticator.Object,
         serializer.Object,
         httpClient.Object,
-        retryHandler.Object
+        retryHandler.Object,
+        null
       );
       await apiConnector.SendAPIRequest<string>(new Uri("/me", UriKind.Relative), HttpMethod.Get);
 
@@ -82,7 +83,8 @@ namespace SpotifyAPI.Web.Tests
         authenticator.Object,
         serializer.Object,
         httpClient.Object,
-        retryHandler.Object
+        retryHandler.Object,
+        null
       );
       await apiConnector.SendAPIRequest<string>(new Uri("/me", UriKind.Relative), HttpMethod.Get);
 

SpotifyAPI.Web/Clients/SpotifyClientConfig.cs

@@ -9,6 +9,7 @@ namespace SpotifyAPI.Web
     public IAuthenticator Authenticator { get; }
     public IJSONSerializer JSONSerializer { get; }
     public IHTTPClient HTTPClient { get; }
+    public IHTTPLogger HTTPLogger { get; }
     public IRetryHandler RetryHandler { get; }
 
     /// <summary>
@@ -21,12 +22,14 @@ namespace SpotifyAPI.Web
     /// <param name="jsonSerializer"></param>
     /// <param name="httpClient"></param>
     /// <param name="retryHandler"></param>
+    /// <param name="httpLogger"></param>
     public SpotifyClientConfig(
       Uri baseAddress,
       IAuthenticator authenticator,
       IJSONSerializer jsonSerializer,
       IHTTPClient httpClient,
-      IRetryHandler retryHandler
+      IRetryHandler retryHandler,
+      IHTTPLogger httpLogger
     )
     {
       BaseAddress = baseAddress;
@@ -34,6 +37,7 @@ namespace SpotifyAPI.Web
       JSONSerializer = jsonSerializer;
       HTTPClient = httpClient;
       RetryHandler = retryHandler;
+      HTTPLogger = httpLogger;
     }
 
     internal IAPIConnector CreateAPIConnector()
@@ -44,7 +48,7 @@ namespace SpotifyAPI.Web
       Ensure.ArgumentNotNull(JSONSerializer, nameof(JSONSerializer));
       Ensure.ArgumentNotNull(HTTPClient, nameof(HTTPClient));
 
-      return new APIConnector(BaseAddress, Authenticator, JSONSerializer, HTTPClient, RetryHandler);
+      return new APIConnector(BaseAddress, Authenticator, JSONSerializer, HTTPClient, RetryHandler, HTTPLogger);
     }
 
     public SpotifyClientConfig WithToken(string token, string tokenType = "Bearer")
@@ -56,12 +60,17 @@ namespace SpotifyAPI.Web
 
     public SpotifyClientConfig WithRetryHandler(IRetryHandler retryHandler)
     {
-      return new SpotifyClientConfig(BaseAddress, Authenticator, JSONSerializer, HTTPClient, retryHandler);
+      return new SpotifyClientConfig(BaseAddress, Authenticator, JSONSerializer, HTTPClient, retryHandler, HTTPLogger);
     }
 
     public SpotifyClientConfig WithAuthenticator(IAuthenticator authenticator)
     {
-      return new SpotifyClientConfig(BaseAddress, authenticator, JSONSerializer, HTTPClient, RetryHandler);
+      return new SpotifyClientConfig(BaseAddress, authenticator, JSONSerializer, HTTPClient, RetryHandler, HTTPLogger);
+    }
+
+    public SpotifyClientConfig WithHTTPLogger(IHTTPLogger httpLogger)
+    {
+      return new SpotifyClientConfig(BaseAddress, Authenticator, JSONSerializer, HTTPClient, RetryHandler, httpLogger);
     }
 
     public static SpotifyClientConfig CreateDefault(string token, string tokenType = "Bearer")
@@ -87,6 +96,7 @@ namespace SpotifyAPI.Web
         authenticator,
         new NewtonsoftJSONSerializer(),
         new NetHttpClient(),
+        null,
         null
       );
     }

SpotifyAPI.Web/Http/APIConnector.cs

@@ -13,22 +13,25 @@ namespace SpotifyAPI.Web.Http
     private readonly IJSONSerializer _jsonSerializer;
     private readonly IHTTPClient _httpClient;
     private readonly IRetryHandler _retryHandler;
+    private readonly IHTTPLogger _httpLogger;
 
     public APIConnector(Uri baseAddress, IAuthenticator authenticator) :
-      this(baseAddress, authenticator, new NewtonsoftJSONSerializer(), new NetHttpClient(), null)
+      this(baseAddress, authenticator, new NewtonsoftJSONSerializer(), new NetHttpClient(), null, null)
     { }
     public APIConnector(
       Uri baseAddress,
       IAuthenticator authenticator,
       IJSONSerializer jsonSerializer,
       IHTTPClient httpClient,
-      IRetryHandler retryHandler)
+      IRetryHandler retryHandler,
+      IHTTPLogger httpLogger)
     {
       _baseAddress = baseAddress;
       _authenticator = authenticator;
       _jsonSerializer = jsonSerializer;
       _httpClient = httpClient;
       _retryHandler = retryHandler;
+      _httpLogger = httpLogger;
     }
 
     public Task<T> Delete<T>(Uri uri)
@@ -159,13 +162,17 @@ namespace SpotifyAPI.Web.Http
     private async Task<IResponse> DoRequest(IRequest request)
     {
       await _authenticator.Apply(request).ConfigureAwait(false);
+      _httpLogger?.OnRequest(request);
       IResponse response = await _httpClient.DoRequest(request).ConfigureAwait(false);
+      _httpLogger?.OnResponse(response);
       if (_retryHandler != null)
       {
         response = await _retryHandler?.HandleRetry(request, response, async (newRequest) =>
         {
           await _authenticator.Apply(newRequest).ConfigureAwait(false);
-          return await _httpClient.DoRequest(request).ConfigureAwait(false);
+          var newResponse = await _httpClient.DoRequest(request).ConfigureAwait(false);
+          _httpLogger?.OnResponse(newResponse);
+          return newResponse;
         });
       }
       ProcessErrors(response);

SpotifyAPI.Web/Http/Interfaces/IHTTPLogger.cs

@@ -0,0 +1,8 @@
+namespace SpotifyAPI.Web.Http
+{
+  public interface IHTTPLogger
+  {
+    void OnRequest(IRequest request);
+    void OnResponse(IResponse response);
+  }
+}

SpotifyAPI.Web/Http/SimpleHTTPLogger.cs

@@ -0,0 +1,24 @@
+using System.Linq;
+using System;
+
+namespace SpotifyAPI.Web.Http
+{
+  public class SimpleHTTPLogger : IHTTPLogger
+  {
+    public void OnRequest(IRequest request)
+    {
+      string parameters = null;
+      if (request.Parameters != null)
+      {
+        parameters = string.Join(",", request.Parameters?.Select(kv => kv.Key + "=" + kv.Value).ToArray());
+      }
+      Console.WriteLine("\n{0} {1} [{2}] {3}", request.Method, request.Endpoint, parameters, request.Body);
+    }
+
+    public void OnResponse(IResponse response)
+    {
+      string body = response.Body?.ToString().Substring(0, 50).Replace("\n", "");
+      Console.WriteLine("--> {0} {1} {2}\n", response.StatusCode, response.ContentType, body);
+    }
+  }
+}