Additional tests from @Alexei000 and cleanup of usings (Thanks Alex Dragan!)

Author: OkGoDoIt

OpenAI_API/APIAuthentication.cs

@@ -1,10 +1,5 @@
 using System;
-using System.Collections.Generic;
-using System.Dynamic;
 using System.IO;
-using System.Linq;
-using System.Runtime.CompilerServices;
-using System.Text;
 
 namespace OpenAI_API
 {

OpenAI_API/Completions/CompletionEndpoint.cs

@@ -1,12 +1,6 @@
-using Newtonsoft.Json;
-using System;
+using System;
 using System.Collections.Generic;
-using System.IO;
-using System.Linq;
 using System.Net.Http;
-using System.Runtime.CompilerServices;
-using System.Security.Authentication;
-using System.Text;
 using System.Threading.Tasks;
 
 namespace OpenAI_API

OpenAI_API/Completions/CompletionRequest.cs

@@ -1,11 +1,5 @@
 using Newtonsoft.Json;
-using System;
-using System.Collections.Generic;
-using System.ComponentModel;
-using System.Data.Common;
 using System.Linq;
-using System.Runtime;
-using System.Text;
 
 namespace OpenAI_API
 {
@@ -18,7 +12,7 @@ public class CompletionRequest
 		/// ID of the model to use. You can use <see cref="ModelsEndpoint.GetModelsAsync()"/> to see all of your available models, or use a standard model like <see cref="Model.DavinciText"/>.
 		/// </summary>
 		[JsonProperty("model")]
-		public string Model { get; set; }
+		public string Model { get; set; } = OpenAI_API.Model.DavinciText;
 
 		/// <summary>
 		/// This is only used for serializing the request into JSON, do not use it directly.
@@ -171,7 +165,7 @@ public string StopSequence
 		/// </summary>
 		public CompletionRequest()
 		{
-
+			this.Model = OpenAI_API.Model.DefaultModel;
 		}
 
 		/// <summary>

OpenAI_API/Completions/CompletionResult.cs

@@ -1,9 +1,5 @@
 using Newtonsoft.Json;
-using Newtonsoft.Json.Linq;
-using System;
 using System.Collections.Generic;
-using System.Text;
-using System.Threading;
 
 namespace OpenAI_API
 {
@@ -82,7 +78,7 @@ public class Logprobs
 		public List<string> Tokens { get; set; }
 
 		[JsonProperty("token_logprobs")]
-		public List<double> TokenLogprobs { get; set; }
+		public List<double?> TokenLogprobs { get; set; }
 
 		[JsonProperty("top_logprobs")]
 		public IList<IDictionary<string, double>> TopLogprobs { get; set; }

OpenAI_API/EndpointBase.cs

@@ -5,7 +5,6 @@
 using System.IO;
 using System.Linq;
 using System.Net.Http;
-using System.Runtime.Serialization;
 using System.Security.Authentication;
 using System.Text;
 using System.Threading.Tasks;
@@ -18,17 +17,17 @@ namespace OpenAI_API
 	public abstract class EndpointBase
 	{
 		/// <summary>
-		/// 
+		/// The internal reference to the API, mostly used for authentication
 		/// </summary>
-		protected readonly OpenAIAPI Api;
+		protected readonly OpenAIAPI _Api;
 
 		/// <summary>
 		/// Constructor of the api endpoint base, to be called from the contructor of any devived classes.  Rather than instantiating any endpoint yourself, access it through an instance of <see cref="OpenAIAPI"/>.
 		/// </summary>
 		/// <param name="api"></param>
 		internal EndpointBase(OpenAIAPI api)
 		{
-			this.Api = api;
+			this._Api = api;
 		}
 
 		/// <summary>
@@ -43,7 +42,7 @@ protected string Url
 		{
 			get
 			{
-				return $"{Api.ApiUrlBase}{Endpoint}";
+				return $"{_Api.ApiUrlBase}{Endpoint}";
 			}
 		}
 
@@ -54,15 +53,15 @@ protected string Url
 		/// <exception cref="AuthenticationException">Thrown if there is no valid authentication.  Please refer to <see href="https://github.com/OkGoDoIt/OpenAI-API-dotnet#authentication"/> for details.</exception>
 		protected HttpClient GetClient()
 		{
-			if (Api.Auth?.ApiKey is null)
+			if (_Api.Auth?.ApiKey is null)
 			{
 				throw new AuthenticationException("You must provide API authentication.  Please refer to https://github.com/OkGoDoIt/OpenAI-API-dotnet#authentication for details.");
 			}
 
 			HttpClient client = new HttpClient();
-			client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", Api.Auth.ApiKey);
+			client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", _Api.Auth.ApiKey);
 			client.DefaultRequestHeaders.Add("User-Agent", "okgodoit/dotnet_openai_api");
-			if (!string.IsNullOrEmpty(Api.Auth.OpenAIOrganization)) client.DefaultRequestHeaders.Add("OpenAI-Organization", Api.Auth.OpenAIOrganization);
+			if (!string.IsNullOrEmpty(_Api.Auth.OpenAIOrganization)) client.DefaultRequestHeaders.Add("OpenAI-Organization", _Api.Auth.OpenAIOrganization);
 
 			return client;
 		}

OpenAI_API/Files/File.cs

@@ -1,9 +1,4 @@
 using Newtonsoft.Json;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace OpenAI_API.Files
 {

OpenAI_API/Files/FilesEndpoint.cs

@@ -1,11 +1,7 @@
 using Newtonsoft.Json;
-using System;
 using System.Collections.Generic;
 using System.IO;
-using System.Linq;
 using System.Net.Http;
-using System.Reflection;
-using System.Text;
 using System.Threading.Tasks;
 
 namespace OpenAI_API.Files

OpenAI_API/Model/Model.cs

@@ -1,8 +1,4 @@
 using Newtonsoft.Json;
-using System;
-using System.Collections.Generic;
-using System.Net.Http;
-using System.Text;
 using System.Threading.Tasks;
 
 namespace OpenAI_API
@@ -60,6 +56,10 @@ public Model()
 
 		}
 
+		/// <summary>
+		/// The default model to use in requests if no other model is specified.
+		/// </summary>
+		public static Model DefaultModel { get; set; } = DavinciText;
 
 
 		/// <summary>

OpenAI_API/Model/ModelsEndpoint.cs

@@ -1,11 +1,5 @@
 using Newtonsoft.Json;
-using System;
 using System.Collections.Generic;
-using System.IO;
-using System.Net.Http;
-using System.Runtime.CompilerServices;
-using System.Security.Authentication;
-using System.Text;
 using System.Threading.Tasks;
 
 namespace OpenAI_API
@@ -33,7 +27,7 @@ internal ModelsEndpoint(OpenAIAPI api) : base(api) { }
 		/// <returns>Asynchronously returns the <see cref="Model"/> with all available properties</returns>
 		public Task<Model> RetrieveModelDetailsAsync(string id)
 		{
-			return RetrieveModelDetailsAsync(id, Api?.Auth);
+			return RetrieveModelDetailsAsync(id, _Api?.Auth);
 		}
 
 		/// <summary>

OpenAI_API/OpenAIAPI.cs

@@ -1,12 +1,5 @@
-using Newtonsoft.Json;
-using OpenAI_API.Files;
+using OpenAI_API.Files;
 using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Net.Http;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace OpenAI_API
 {