fix: Fixed warnings.

src/Providers/Abstractions/src/ImageToText/IImageToTextModel.cs

@@ -1,3 +1,4 @@
+// ReSharper disable once CheckNamespace
 namespace LangChain.Providers;
 
 /// <summary>

src/Providers/Abstractions/src/ImageToText/IImageToTextModel`2.cs

@@ -1,3 +1,4 @@
+// ReSharper disable once CheckNamespace
 namespace LangChain.Providers;
 
 /// <summary>

src/Providers/Abstractions/src/ImageToText/ImageToTextResponse.cs

@@ -1,5 +1,4 @@
 // ReSharper disable once CheckNamespace
-// ReSharper disable ConditionalAccessQualifierIsNonNullableAccordingToAPIContract
 namespace LangChain.Providers;
 
 #pragma warning disable CA2225

src/Providers/Abstractions/src/ImageToText/ImageToTextSettings.cs

@@ -9,19 +9,13 @@ public class ImageToTextSettings
  public static ImageToTextSettings Default { get; } = new()
  {
  User = string.Empty,
- Endpoint = "https://api-inference.huggingface.co/models/"
  };
 
  /// <summary>
  /// Unique user identifier.
  /// </summary>
  public string? User { get; init; }
 
- /// <summary>
- /// Endpoint url for api.
- /// </summary>
- public string Endpoint { get; set; }
-
 
  /// <summary>
  /// Calculate the settings to use for the request.
@@ -44,12 +38,6 @@ public static ImageToTextSettings Calculate(
  providerSettings?.User ??
  Default.User ??
  throw new InvalidOperationException("Default User is not set."),
- Endpoint =
- requestSettings?.Endpoint ??
- modelSettings?.Endpoint ??
- providerSettings?.Endpoint ??
- Default.Endpoint ??
- throw new InvalidOperationException("Default Endpoint is not set."),
  };
  }
 }

src/Providers/Abstractions/src/PublicAPI.Unshipped.txt

@@ -1,4 +1,5 @@
 abstract LangChain.Providers.ChatModel.GenerateAsync(LangChain.Providers.ChatRequest! request, LangChain.Providers.ChatSettings? settings = null, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) -> System.Threading.Tasks.Task<LangChain.Providers.ChatResponse!>!
+abstract LangChain.Providers.ImageToTextModel.GenerateTextFromImageAsync(LangChain.Providers.ImageToTextRequest! request, LangChain.Providers.ImageToTextSettings? settings = null, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) -> System.Threading.Tasks.Task<LangChain.Providers.ImageToTextResponse!>!
 LangChain.Providers.ChatModel
 LangChain.Providers.ChatModel.ChatModel(string! id) -> void
 LangChain.Providers.ChatModel.CompletedResponseGenerated -> System.EventHandler<string!>?
@@ -67,6 +68,28 @@ LangChain.Providers.IChatModelWithTokenCounting
 LangChain.Providers.IEmbeddingModel
 LangChain.Providers.IEmbeddingModel.CreateEmbeddingsAsync(LangChain.Providers.EmbeddingRequest! request, LangChain.Providers.EmbeddingSettings? settings = null, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) -> System.Threading.Tasks.Task<LangChain.Providers.EmbeddingResponse!>!
 LangChain.Providers.IEmbeddingModel.MaximumInputLength.get -> int
+LangChain.Providers.IImageToTextModel
+LangChain.Providers.IImageToTextModel.GenerateTextFromImageAsync(LangChain.Providers.ImageToTextRequest! request, LangChain.Providers.ImageToTextSettings? settings = null, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) -> System.Threading.Tasks.Task<LangChain.Providers.ImageToTextResponse!>!
+LangChain.Providers.IImageToTextModel<TRequest, TResponse, TSettings>
+LangChain.Providers.IImageToTextModel<TRequest, TResponse, TSettings>.GenerateTextFromImageAsync(TRequest request, TSettings? settings = default(TSettings?), System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) -> System.Threading.Tasks.Task<TResponse>!
+LangChain.Providers.ImageToTextModel
+LangChain.Providers.ImageToTextModel.ImageToTextModel(string! id) -> void
+LangChain.Providers.ImageToTextRequest
+LangChain.Providers.ImageToTextRequest.Image.get -> System.BinaryData!
+LangChain.Providers.ImageToTextRequest.Image.init -> void
+LangChain.Providers.ImageToTextRequest.ImageToTextRequest() -> void
+LangChain.Providers.ImageToTextResponse
+LangChain.Providers.ImageToTextResponse.ImageToTextResponse() -> void
+LangChain.Providers.ImageToTextResponse.Text.get -> string?
+LangChain.Providers.ImageToTextResponse.Text.set -> void
+LangChain.Providers.ImageToTextResponse.Usage.get -> LangChain.Providers.Usage
+LangChain.Providers.ImageToTextResponse.Usage.init -> void
+LangChain.Providers.ImageToTextResponse.UsedSettings.get -> LangChain.Providers.ImageToTextSettings!
+LangChain.Providers.ImageToTextResponse.UsedSettings.init -> void
+LangChain.Providers.ImageToTextSettings
+LangChain.Providers.ImageToTextSettings.ImageToTextSettings() -> void
+LangChain.Providers.ImageToTextSettings.User.get -> string?
+LangChain.Providers.ImageToTextSettings.User.init -> void
 LangChain.Providers.IMaximumInputTokens
 LangChain.Providers.IMaximumInputTokens.MaximumInputTokens.get -> int
 LangChain.Providers.IModel
@@ -151,6 +174,8 @@ LangChain.Providers.Provider.ChatSettings.get -> LangChain.Providers.ChatSetting
 LangChain.Providers.Provider.ChatSettings.init -> void
 LangChain.Providers.Provider.EmbeddingSettings.get -> LangChain.Providers.EmbeddingSettings?
 LangChain.Providers.Provider.EmbeddingSettings.init -> void
+LangChain.Providers.Provider.ImageToTextSettings.get -> LangChain.Providers.ImageToTextSettings?
+LangChain.Providers.Provider.ImageToTextSettings.init -> void
 LangChain.Providers.Provider.ModerationSettings.get -> LangChain.Providers.ModerationSettings?
 LangChain.Providers.Provider.ModerationSettings.init -> void
 LangChain.Providers.Provider.Provider(string! id) -> void
@@ -262,6 +287,8 @@ static LangChain.Providers.EmbeddingRequest.ToEmbeddingRequest(string![]! messag
 static LangChain.Providers.EmbeddingResponse.implicit operator float[]!(LangChain.Providers.EmbeddingResponse! response) -> float[]!
 static LangChain.Providers.EmbeddingResponse.implicit operator float[]![]!(LangChain.Providers.EmbeddingResponse! response) -> float[]![]!
 static LangChain.Providers.EmbeddingSettings.Default.get -> LangChain.Providers.EmbeddingSettings!
+static LangChain.Providers.ImageToTextSettings.Calculate(LangChain.Providers.ImageToTextSettings? requestSettings, LangChain.Providers.ImageToTextSettings? modelSettings, LangChain.Providers.ImageToTextSettings? providerSettings) -> LangChain.Providers.ImageToTextSettings!
+static LangChain.Providers.ImageToTextSettings.Default.get -> LangChain.Providers.ImageToTextSettings!
 static LangChain.Providers.Message.Add(LangChain.Providers.Message left, LangChain.Providers.Message right) -> LangChain.Providers.Message
 static LangChain.Providers.Message.Ai(string! content) -> LangChain.Providers.Message
 static LangChain.Providers.Message.Empty.get -> LangChain.Providers.Message

src/Providers/Amazon.Bedrock/src/Internal/BedrockExtensions.cs

@@ -43,13 +43,9 @@ public static IReadOnlyList<string> Split(
  $"InvokeModelAsync failed with status code: {response.HttpStatusCode}");
  }
 
-#if NET6_0_OR_GREATER && !NET8_0_OR_GREATER
- return JsonNode.Parse(utf8Json: response.Body);
-#else
  return await JsonNode.ParseAsync(
  utf8Json: response.Body,
  cancellationToken: cancellationToken).ConfigureAwait(false);
-#endif
  }
 
  public static async Task<JsonNode?> InvokeModelAsync(

src/Providers/Amazon.Bedrock/src/TextToImage/AmazonTitanImageGenerationModel.cs

@@ -45,7 +45,7 @@ public async Task<TextToImageResponse> GenerateImageAsync(
  },
  cancellationToken).ConfigureAwait(false);
 
- var images = response.Images.Select(image => Data.FromBase64(image)).ToList();
+ var images = response?.Images.Select(Data.FromBase64).ToList() ?? [];
 
  var usage = Usage.Empty with
  {

src/Providers/Amazon.Bedrock/src/TextToImage/AmazonTitanTextToImageResponse.cs

@@ -1,9 +1,10 @@
 using System.Text.Json.Serialization;
 
+// ReSharper disable once CheckNamespace
 namespace LangChain.Providers.Amazon.Bedrock;
 
 public class AmazonTitanTextToImageResponse
 {
  [JsonPropertyName("images")]
- public IList<string> Images { get; set; }
+ public IReadOnlyList<string> Images { get; set; } = new List<string>();
 }

src/Providers/Amazon.Bedrock/test/EmbeddedResource.cs

@@ -1,10 +1,6 @@
 // Copyright (c) Microsoft. All rights reserved.
 
-using System;
-using System.Configuration;
-using System.IO;
 using System.Reflection;
-using System.Threading.Tasks;
 
 namespace Resources;
 
@@ -20,20 +16,20 @@ namespace Resources;
 /// </summary>
 internal static class EmbeddedResource
 {
- private static readonly string? s_namespace = typeof(EmbeddedResource).Namespace;
+ private static readonly string? SNamespace = typeof(EmbeddedResource).Namespace;
 
  internal static string Read(string fileName)
  {
  // Get the current assembly. Note: this class is in the same assembly where the embedded resources are stored.
  Assembly assembly =
  typeof(EmbeddedResource).GetTypeInfo().Assembly ??
- throw new ConfigurationException($"[{s_namespace}] {fileName} assembly not found");
+ throw new ArgumentException($"[{SNamespace}] {fileName} assembly not found");
 
  // Resources are mapped like types, using the namespace and appending "." (dot) and the file name
- var resourceName = $"{s_namespace}." + fileName;
+ var resourceName = $"{SNamespace}." + fileName;
  using Stream resource =
  assembly.GetManifestResourceStream(resourceName) ??
- throw new ConfigurationException($"{resourceName} resource not found");
+ throw new ArgumentException($"{resourceName} resource not found");
 
  // Return the resource content, in text format.
  using var reader = new StreamReader(resource);
@@ -45,10 +41,10 @@ internal static string Read(string fileName)
  // Get the current assembly. Note: this class is in the same assembly where the embedded resources are stored.
  Assembly assembly =
  typeof(EmbeddedResource).GetTypeInfo().Assembly ??
- throw new ConfigurationException($"[{s_namespace}] {fileName} assembly not found");
+ throw new ArgumentException($"[{SNamespace}] {fileName} assembly not found");
 
  // Resources are mapped like types, using the namespace and appending "." (dot) and the file name
- var resourceName = $"{s_namespace}." + fileName;
+ var resourceName = $"{SNamespace}." + fileName;
  return assembly.GetManifestResourceStream(resourceName);
  }
 

src/Providers/HuggingFace/src/HuggingFaceImageToTextModel.cs

@@ -1,5 +1,7 @@
 using System.Diagnostics;
+using System.Net.Http.Headers;
 using System.Text.Json;
+using System.Text.Json.Serialization;
 
 namespace LangChain.Providers.HuggingFace;
 
@@ -11,29 +13,33 @@ public class HuggingFaceImageToTextModel(
  string id)
  : ImageToTextModel(id), IImageToTextModel
 {
- public override async Task<ImageToTextResponse> GenerateTextFromImageAsync(ImageToTextRequest request, ImageToTextSettings? settings = default,
+ public override async Task<ImageToTextResponse> GenerateTextFromImageAsync(
+ ImageToTextRequest request,
+ ImageToTextSettings? settings = default,
  CancellationToken cancellationToken = default)
  {
  request = request ?? throw new ArgumentNullException(nameof(request));
 
  var watch = Stopwatch.StartNew();
 
- var usedSettings = ImageToTextSettings.Calculate(
+ var usedSettings = HuggingFaceImageToTextSettings.Calculate(
  requestSettings: settings,
  modelSettings: Settings,
  providerSettings: provider.ImageToTextSettings);
 
  var imageContent = new ByteArrayContent(request.Image.ToArray());
- if (request.Image.MediaType != null) imageContent.Headers.ContentType = new(request.Image.MediaType);
-
- var httpRequest = new HttpRequestMessage(HttpMethod.Post, usedSettings.Endpoint + id)
+ if (request.Image.MediaType != null)
  {
- Content = imageContent
- };
+ imageContent.Headers.ContentType = new MediaTypeHeaderValue(request.Image.MediaType);
+ }
+
+ using var httpRequest = new HttpRequestMessage(HttpMethod.Post, usedSettings.Endpoint + Id);
+ httpRequest.Content = imageContent;
 
  var response = await provider.HttpClient.SendAsync(httpRequest, HttpCompletionOption.ResponseContentRead, cancellationToken).ConfigureAwait(false);
- var body = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
- var deserializeResponse = DeserializeResponse<ImageToTextGenerationResponse>(body);
+ var json = await response.Content.ReadAsStringAsync(cancellationToken).ConfigureAwait(false);
+ var generation = JsonSerializer.Deserialize(json, SourceGenerationContext.Default.ImageToTextGenerationResponse) ??
+ throw new InvalidOperationException("Response is null");
 
  var usage = Usage.Empty with
  {
@@ -44,22 +50,12 @@ public override async Task<ImageToTextResponse> GenerateTextFromImageAsync(Image
 
  return new ImageToTextResponse
  {
- Text = deserializeResponse.SingleOrDefault()?.GeneratedText,
+ Text = generation.SingleOrDefault()?.GeneratedText,
  UsedSettings = usedSettings,
  Usage = usage,
  };
  }
+}
 
- private static T DeserializeResponse<T>(string body)
- {
- body = body ?? throw new ArgumentNullException(nameof(body));
-
- T? deserializedResponse = JsonSerializer.Deserialize<T>(body);
- if (deserializedResponse is null)
- {
- throw new JsonException("Response is null");
- }
-
- return deserializedResponse;
- }
-}
+[JsonSerializable(typeof(ImageToTextGenerationResponse))]
+public partial class SourceGenerationContext : JsonSerializerContext;

src/Providers/HuggingFace/src/HuggingFaceImageToTextSettings.cs

@@ -0,0 +1,54 @@
+// ReSharper disable once CheckNamespace
+namespace LangChain.Providers;
+
+/// <summary>
+/// Base class for image to text request settings.
+/// </summary>
+public class HuggingFaceImageToTextSettings : ImageToTextSettings
+{
+ public new static HuggingFaceImageToTextSettings Default { get; } = new()
+ {
+ User = ImageToTextSettings.Default.User,
+ Endpoint = "https://api-inference.huggingface.co/models/"
+ };
+
+ /// <summary>
+ /// Endpoint url for api.
+ /// </summary>
+ public string? Endpoint { get; set; }
+
+
+ /// <summary>
+ /// Calculate the settings to use for the request.
+ /// </summary>
+ /// <param name="requestSettings"></param>
+ /// <param name="modelSettings"></param>
+ /// <param name="providerSettings"></param>
+ /// <returns></returns>
+ /// <exception cref="InvalidOperationException"></exception>
+ public new static HuggingFaceImageToTextSettings Calculate(
+ ImageToTextSettings? requestSettings,
+ ImageToTextSettings? modelSettings,
+ ImageToTextSettings? providerSettings)
+ {
+ var requestSettingsCasted = requestSettings as HuggingFaceImageToTextSettings;
+ var modelSettingsCasted = modelSettings as HuggingFaceImageToTextSettings;
+ var providerSettingsCasted = providerSettings as HuggingFaceImageToTextSettings;
+
+ return new HuggingFaceImageToTextSettings
+ {
+ User = 
+ requestSettings?.User ??
+ modelSettings?.User ??
+ providerSettings?.User ??
+ Default.User ??
+ throw new InvalidOperationException("Default User is not set."),
+ Endpoint =
+ requestSettingsCasted?.Endpoint ??
+ modelSettingsCasted?.Endpoint ??
+ providerSettingsCasted?.Endpoint ??
+ Default.Endpoint ??
+ throw new InvalidOperationException("Default Endpoint is not set."),
+ };
+ }
+}

src/Providers/HuggingFace/src/ImageToTextGenerationResponse.cs

@@ -0,0 +1,15 @@
+using System.Text.Json.Serialization;
+
+// ReSharper disable once CheckNamespace
+namespace LangChain.Providers;
+
+public class ImageToTextGenerationResponse : List<GeneratedTextItem>;
+
+public sealed class GeneratedTextItem
+{
+ /// <summary>
+ /// The continuated string
+ /// </summary>
+ [JsonPropertyName("generated_text")]
+ public string? GeneratedText { get; set; }
+}

src/Providers/HuggingFace/src/LangChain.Providers.HuggingFace.csproj

@@ -20,6 +20,7 @@
  </ItemGroup>
 
  <ItemGroup>
+ <ProjectReference Include="..\..\..\Utilities\Pollyfils\src\LangChain.Polyfills.csproj" />
  <ProjectReference Include="..\..\Abstractions\src\LangChain.Providers.Abstractions.csproj" />
  </ItemGroup>