feat: support video content and partial mode

README.md

@@ -81,9 +81,9 @@ Console.WriteLine(completion.Output.Text);
 ```csharp
 var history = new List<ChatMessage>
 {
-    new("user", "Please remember this number, 42"),
-    new("assistant", "I have remembered this number."),
-    new("user", "What was the number I metioned before?")
+    ChatMessage.User("Please remember this number, 42"),
+    ChatMessage.Assistant("I have remembered this number."),
+    ChatMessage.User("What was the number I metioned before?")
 }
 var parameters = new TextGenerationParameters()
 {
@@ -137,7 +137,7 @@ var tools = new List<ToolDefinition>()
 
 var history = new List<ChatMessage>
 {
-    new("user", "What is the weather today in C.A?")
+    ChatMessage.User("What is the weather today in C.A?")
 };
 
 var parameters = new TextGenerationParamters()
@@ -155,7 +155,7 @@ Console.WriteLine(completion.Output.Choice[0].Message.ToolCalls[0].Function.Name
 
 // calling tool that model requests and append result into history.
 var result = GetCurrentWeather(JsonSerializer.Deserialize<GetCurrentWeatherParameters>(completion.Output.Choice[0].Message.ToolCalls[0].Function.Arguments));
-history.Add(new("tool", result, nameof(GetCurrentWeather)));
+history.Add(ChatMessage.Tool(result, nameof(GetCurrentWeather)));
 
 // get back answers.
 completion = await client.GetQWenChatCompletionAsync(QWenLlm.QWenMax, history, parameters);
@@ -179,8 +179,8 @@ Using uploaded file id in messages.
 ```csharp
 var history = new List<ChatMessage>
 {
-    new(uploadedFile.Id),   // use array for multiple files, e.g. [file1.Id, file2.Id]
-    new("user", "Summarize the content of file.")
+    ChatMessage.File(uploadedFile.Id),   // use array for multiple files, e.g. [file1.Id, file2.Id]
+    ChatMessage.User("Summarize the content of file.")
 }
 var parameters = new TextGenerationParameters()
 {

README.zh-Hans.md

@@ -5,7 +5,7 @@
 
 # Cnblogs.DashScopeSDK
 
-由博客园维护并使用的非官方灵积服务 SDK。
+由博客园维护并使用的非官方灵积（百炼）服务 SDK。
 
 使用前注意：当前项目正在积极开发中，小版本也可能包含破坏性更改，升级前请查看对应版本 Release Note 进行迁移。
 
@@ -63,7 +63,7 @@ public class YourService(IDashScopeClient client)
     - 人像风格重绘 - `CreateWanxImageGenerationTaskAsync()` and `GetWanxImageGenerationTaskAsync()`
     - 图像背景生成 - `CreateWanxBackgroundGenerationTaskAsync()` and `GetWanxBackgroundGenerationTaskAsync()`
 - 适用于 QWen-Long 的文件 API `dashScopeClient.UploadFileAsync()` and `dashScopeClient.DeleteFileAsync`
-
+- 其他使用相同 Endpoint 的模型
 
 # 示例
 
@@ -82,9 +82,9 @@ Console.WriteLine(completion.Output.Text);
 ```csharp
 var history = new List<ChatMessage>
 {
-    new("user", "Please remember this number, 42"),
-    new("assistant", "I have remembered this number."),
-    new("user", "What was the number I metioned before?")
+    ChatMessage.User("Please remember this number, 42"),
+    ChatMessage.Assistant("I have remembered this number."),
+    ChatMessage.User("What was the number I metioned before?")
 }
 var parameters = new TextGenerationParameters()
 {
@@ -134,7 +134,7 @@ var tools = new List<ToolDefinition>()
 
 var history = new List<ChatMessage>
 {
-    new("user", "杭州现在天气如何？")
+    ChatMessage.User("What is the weather today in C.A?")
 };
 
 var parameters = new TextGenerationParamters()
@@ -175,8 +175,8 @@ var uploadedFile = await dashScopeClient.UploadFileAsync(file.OpenRead(), file.N
 ```csharp
 var history = new List<ChatMessage>
 {
-    new(uploadedFile.Id),   // 多文件情况下可以直接传入文件 Id 数组, 例如：[file1.Id, file2.Id]
-    new("user", "总结一下文件的内容。")
+    ChatMessage.File(uploadedFile.Id),   // 多文件情况下可以直接传入文件 Id 数组, 例如：[file1.Id, file2.Id]
+    ChatMessage.User("总结一下文件的内容。")
 }
 var parameters = new TextGenerationParameters()
 {

sample/Cnblogs.DashScope.Sample/Program.cs

@@ -73,7 +73,7 @@ async Task ChatStreamAsync()
     {
         Console.Write("user > ");
         var input = Console.ReadLine()!;
-        history.Add(new ChatMessage("user", input));
+        history.Add(ChatMessage.User(input));
         var stream = dashScopeClient.GetQWenChatStreamAsync(
             QWenLlm.QWenMax,
             history,
@@ -109,10 +109,10 @@ async Task ChatWithFilesAsync()
     Console.WriteLine("file uploaded, id: " + uploadedFile.Id);
     Console.WriteLine();
 
-    var fileMessage = new ChatMessage(uploadedFile.Id);
+    var fileMessage = ChatMessage.File(uploadedFile.Id);
     history.Add(fileMessage);
     Console.WriteLine("system > " + fileMessage.Content);
-    var userPrompt = new ChatMessage("user", "该文件的内容是什么");
+    var userPrompt = ChatMessage.User("该文件的内容是什么");
     history.Add(userPrompt);
     Console.WriteLine("user > " + userPrompt.Content);
     var stream = dashScopeClient.GetQWenChatStreamAsync(
@@ -156,7 +156,7 @@ async Task ChatWithToolsAsync()
                 new JsonSchemaBuilder().FromType<WeatherReportParameters>().Build()))
     };
     var chatParameters = new TextGenerationParameters() { ResultFormat = ResultFormats.Message, Tools = tools };
-    var question = new ChatMessage("user", "请问现在杭州的天气如何？");
+    var question = ChatMessage.User("请问现在杭州的天气如何？");
     history.Add(question);
     Console.WriteLine($"{question.Role} > {question.Content}");
 
@@ -168,7 +168,7 @@ async Task ChatWithToolsAsync()
 
     var toolResponse = GetWeather(
         JsonSerializer.Deserialize<WeatherReportParameters>(toolCallMessage.ToolCalls[0].Function!.Arguments!)!);
-    var toolMessage = new ChatMessage("tool", toolResponse, nameof(GetWeather));
+    var toolMessage = ChatMessage.Tool(toolResponse, nameof(GetWeather));
     history.Add(toolMessage);
     Console.WriteLine($"{toolMessage.Role} > {toolMessage.Content}");
 

src/Cnblogs.DashScope.Core/ChatMessage.cs

@@ -9,12 +9,14 @@ namespace Cnblogs.DashScope.Core;
 /// <param name="Role">The role of this message.</param>
 /// <param name="Content">The content of this message.</param>
 /// <param name="Name">Used when role is tool, represents the function name of this message generated by.</param>
+/// <param name="Partial">Notify model that next message should use this message as prefix.</param>
 /// <param name="ToolCalls">Calls to the function.</param>
 [method: JsonConstructor]
 public record ChatMessage(
     string Role,
     string Content,
     string? Name = null,
+    bool? Partial = null,
     List<ToolCall>? ToolCalls = null) : IMessage<string>
 {
     /// <summary>
@@ -34,4 +36,69 @@ public ChatMessage(IEnumerable<DashScopeFileId> fileIds)
         : this("system", string.Join(',', fileIds.Select(f => f.ToUrl())))
     {
     }
+
+    /// <summary>
+    /// Creates a file message.
+    /// </summary>
+    /// <param name="fileId">The id of the file.</param>
+    /// <returns></returns>
+    public static ChatMessage File(DashScopeFileId fileId)
+    {
+        return new ChatMessage(fileId);
+    }
+
+    /// <summary>
+    /// Creates a file message.
+    /// </summary>
+    /// <param name="fileIds">The file id list.</param>
+    /// <returns></returns>
+    public static ChatMessage File(IEnumerable<DashScopeFileId> fileIds)
+    {
+        return new ChatMessage(fileIds);
+    }
+
+    /// <summary>
+    /// Create a user message.
+    /// </summary>
+    /// <param name="content">Content of the message.</param>
+    /// <param name="name">Author name.</param>
+    /// <returns></returns>
+    public static ChatMessage User(string content, string? name = null)
+    {
+        return new ChatMessage(DashScopeRoleNames.User, content, name);
+    }
+
+    /// <summary>
+    /// Create a system message.
+    /// </summary>
+    /// <param name="content">The content of the message.</param>
+    /// <returns></returns>
+    public static ChatMessage System(string content)
+    {
+        return new ChatMessage(DashScopeRoleNames.System, content);
+    }
+
+    /// <summary>
+    /// Create an assistant message
+    /// </summary>
+    /// <param name="content">The content of the message.</param>
+    /// <param name="partial">When set to true, content of this message would be the prefix of next model output.</param>
+    /// <param name="name">Author name.</param>
+    /// <param name="toolCalls">Tool calls by model.</param>
+    /// <returns></returns>
+    public static ChatMessage Assistant(string content, bool? partial = null, string? name = null, List<ToolCall>? toolCalls = null)
+    {
+        return new ChatMessage(DashScopeRoleNames.Assistant, content, name, partial, toolCalls);
+    }
+
+    /// <summary>
+    /// Create a tool message.
+    /// </summary>
+    /// <param name="content">The output from tool.</param>
+    /// <param name="name">The name of the tool.</param>
+    /// <returns></returns>
+    public static ChatMessage Tool(string content, string? name = null)
+    {
+        return new ChatMessage(DashScopeRoleNames.Tool, content, name);
+    }
 }

src/Cnblogs.DashScope.Core/DashScopeResponseFormat.cs

@@ -0,0 +1,17 @@
+namespace Cnblogs.DashScope.Core;
+
+/// <summary>
+/// Available formats for <see cref="ITextGenerationParameters"/>.<see cref="ITextGenerationParameters.ResponseFormat"/>
+/// </summary>
+public record DashScopeResponseFormat(string Type)
+{
+    /// <summary>
+    /// Output should be text.
+    /// </summary>
+    public static readonly DashScopeResponseFormat Text = new("text");
+
+    /// <summary>
+    /// Output should be json object.
+    /// </summary>
+    public static readonly DashScopeResponseFormat Json = new("json_object");
+}

src/Cnblogs.DashScope.Core/DashScopeRoleNames.cs

@@ -0,0 +1,27 @@
+namespace Cnblogs.DashScope.Core;
+
+/// <summary>
+/// Common role name.
+/// </summary>
+public static class DashScopeRoleNames
+{
+    /// <summary>
+    /// User inputs.
+    /// </summary>
+    public const string User = "user";
+
+    /// <summary>
+    /// Model outputs.
+    /// </summary>
+    public const string Assistant = "assistant";
+
+    /// <summary>
+    /// System message.
+    /// </summary>
+    public const string System = "system";
+
+    /// <summary>
+    /// Tool outputs.
+    /// </summary>
+    public const string Tool = "tool";
+}

src/Cnblogs.DashScope.Core/ITextGenerationParameters.cs

@@ -7,14 +7,34 @@ public interface ITextGenerationParameters
     : IIncrementalOutputParameter, ISeedParameter, IProbabilityParameter, IPenaltyParameter, IMaxTokenParameter, IStopTokenParameter
 {
     /// <summary>
-    /// The format of the result message, must be <c>text</c> or <c>message</c>.
+    /// The format of the result, must be <c>text</c> or <c>message</c>.
     /// </summary>
     /// <remarks>
     /// <c>text</c> - original text format.
     /// <para><c>message</c> - OpenAI compatible message format</para>
     /// </remarks>
+    /// <example>
+    /// Sets <c>result_format</c> to <c>message</c>
+    /// <code>
+    ///     parameter.ResultFormat = ResultFormats.Message;
+    /// </code>
+    /// </example>
     public string? ResultFormat { get; }
 
+    /// <summary>
+    /// The format of response message, must be <c>text</c> or <c>json_object</c>
+    /// </summary>
+    /// <remarks>
+    /// This property is not <see cref="ResultFormat"/>. Be sure not to confuse them.
+    /// </remarks>
+    /// <example>
+    /// Set response format to <c>json_object</c>.
+    /// <code>
+    ///     parameter.ResponseFormat = DashScopeResponseFormat.Json;
+    /// </code>
+    /// </example>
+    public DashScopeResponseFormat? ResponseFormat { get; }
+
     /// <summary>
     /// Enable internet search when generation. Defaults to false.
     /// </summary>

src/Cnblogs.DashScope.Core/TextGenerationStopConvertor.cs → src/Cnblogs.DashScope.Core/Internals/TextGenerationStopConvertor.cs

@@ -1,12 +1,12 @@
 using System.Text.Json;
 using System.Text.Json.Serialization;
 
-namespace Cnblogs.DashScope.Core;
+namespace Cnblogs.DashScope.Core.Internals;
 
 /// <summary>
 /// JSON convertor for <see cref="TextGenerationStop"/>.
 /// </summary>
-public class TextGenerationStopConvertor : JsonConverter<TextGenerationStop>
+internal class TextGenerationStopConvertor : JsonConverter<TextGenerationStop>
 {
     /// <inheritdoc />
     public override TextGenerationStop? Read(

src/Cnblogs.DashScope.Core/ToolChoiceJsonConverter.cs → src/Cnblogs.DashScope.Core/Internals/ToolChoiceJsonConverter.cs

@@ -1,12 +1,12 @@
 using System.Text.Json;
 using System.Text.Json.Serialization;
 
-namespace Cnblogs.DashScope.Core;
+namespace Cnblogs.DashScope.Core.Internals;
 
 /// <summary>
 /// The converter for <see cref="ToolChoice"/>
 /// </summary>
-public class ToolChoiceJsonConverter : JsonConverter<ToolChoice>
+internal class ToolChoiceJsonConverter : JsonConverter<ToolChoice>
 {
     /// <inheritdoc />
     public override ToolChoice? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)

src/Cnblogs.DashScope.Core/MultimodalMessage.cs

@@ -8,4 +8,35 @@ namespace Cnblogs.DashScope.Core;
 /// <param name="Role">The role associated with this message.</param>
 /// <param name="Content">The contents of this message.</param>
 public record MultimodalMessage(string Role, IReadOnlyList<MultimodalMessageContent> Content)
-    : IMessage<IReadOnlyList<MultimodalMessageContent>>;
+    : IMessage<IReadOnlyList<MultimodalMessageContent>>
+{
+    /// <summary>
+    /// Create a user message.
+    /// </summary>
+    /// <param name="contents">Message contents.</param>
+    /// <returns></returns>
+    public static MultimodalMessage User(IReadOnlyList<MultimodalMessageContent> contents)
+    {
+        return new MultimodalMessage(DashScopeRoleNames.User, contents);
+    }
+
+    /// <summary>
+    /// Create a system message.
+    /// </summary>
+    /// <param name="contents">Message contents.</param>
+    /// <returns></returns>
+    public static MultimodalMessage System(IReadOnlyList<MultimodalMessageContent> contents)
+    {
+        return new MultimodalMessage(DashScopeRoleNames.System, contents);
+    }
+
+    /// <summary>
+    /// Creates an assistant message.
+    /// </summary>
+    /// <param name="contents">Message contents.</param>
+    /// <returns></returns>
+    public static MultimodalMessage Assistant(IReadOnlyList<MultimodalMessageContent> contents)
+    {
+        return new MultimodalMessage(DashScopeRoleNames.Assistant, contents);
+    }
+}