feat: 完成ai接口

Yi.Abp.Net8/module/ai-hub/Yi.Framework.AiHub.Application/Services/AiService.cs

@@ -0,0 +1,195 @@
+using System.Text;
+using Azure;
+using Microsoft.AspNetCore.Http;
+using Microsoft.SemanticKernel.ChatCompletion;
+using Microsoft.SemanticKernel.Connectors.AzureOpenAI;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Serialization;
+using Volo.Abp.Application.Services;
+using Yi.Framework.AiHub.Application.Contracts.Dtos;
+using Yi.Framework.SemanticKernel;
+
+namespace Yi.Framework.AiHub.Application.Services;
+
+public class AiService : ApplicationService
+{
+    private readonly SemanticKernelClient _skClient;
+    private IHttpContextAccessor httpContextAccessor;
+
+    public AiService(SemanticKernelClient skClient, IHttpContextAccessor httpContextAccessor)
+    {
+        _skClient = skClient;
+        this.httpContextAccessor = httpContextAccessor;
+    }
+
+    /// <summary>
+    /// 获取模型列表
+    /// </summary>
+    /// <returns></returns>
+    public async Task<List<ModelGetListOutput>> GetModelAsync()
+    {
+        return new List<ModelGetListOutput>()
+        {
+            new ModelGetListOutput
+            {
+                Id = 001,
+                Category = "chat",
+                ModelName = "gpt-4.1-mini",
+                ModelDescribe = "gpt下的ai",
+                ModelPrice = 4,
+                ModelType = "1",
+                ModelShow = "0",
+                SystemPrompt = "",
+                ApiHost = "",
+                ApiKey = "",
+                Remark = "牛逼"
+            },
+            new ModelGetListOutput
+            {
+                Id = 002,
+                Category = "chat",
+                ModelName = "grok-3-mini",
+                ModelDescribe = "马斯克的ai",
+                ModelPrice = 5,
+                ModelType = "1",
+                ModelShow = "0",
+                SystemPrompt = "",
+                ApiHost = "",
+                ApiKey = "",
+                Remark = "牛逼啊"
+            }
+        };
+    }
+
+
+    /// <summary>
+    /// 发送消息
+    /// </summary>
+    /// <param name="input"></param>
+    public async Task PostSendAsync(SendMessageInput input)
+    {
+        var httpContext = this.httpContextAccessor.HttpContext;
+        var response = httpContext.Response;
+        // 设置响应头，声明是 SSE 流
+        response.ContentType = "text/event-stream";
+        response.Headers.Add("Cache-Control", "no-cache");
+        response.Headers.Add("Connection", "keep-alive");
+
+
+        var chatCompletionService = this._skClient.Kernel.GetRequiredService<IChatCompletionService>(input.Model);
+        var history = new ChatHistory();
+        var openSettings = new AzureOpenAIPromptExecutionSettings()
+        {
+            MaxTokens = 3000
+        };
+        foreach (var aiChatContextDto in input.Messages)
+        {
+            if (aiChatContextDto.Role == "ai")
+            {
+                history.AddAssistantMessage(aiChatContextDto.Content);
+            }
+            else if (aiChatContextDto.Role == "user")
+            {
+                history.AddUserMessage(aiChatContextDto.Content);
+            }
+        }
+
+        var results = chatCompletionService.GetStreamingChatMessageContentsAsync(
+            chatHistory: history,
+            executionSettings: openSettings,
+            kernel: _skClient.Kernel);
+
+
+        await using var writer = new StreamWriter(response.Body, Encoding.UTF8, leaveOpen: true);
+        await foreach (var result in results)
+        {
+            var modle = GetMessage(input.Model, result.Content);
+            var message = JsonConvert.SerializeObject(modle, new JsonSerializerSettings
+            {
+                ContractResolver = new CamelCasePropertyNamesContractResolver()
+            });
+
+            await writer.WriteLineAsync($"data: {message}\n");
+            await writer.FlushAsync(); // 确保立即推送数据
+        }
+    }
+
+
+    private SendMessageOutputDto GetMessage(string modelId, string content)
+    {
+        var output = new SendMessageOutputDto
+        {
+            Id = 001,
+            Object = "chat.completion.chunk",
+            Created = 1750336171,
+            Model = modelId,
+            Choices = new()
+            {
+                new Choice
+                {
+                    Index = 0,
+                    Delta = new Delta
+                    {
+                        Content = content,
+                        Role = "assistant"
+                    },
+                    FinishReason = null,
+                    ContentFilterResults = new()
+                    {
+                        Hate = new()
+                        {
+                            Filtered = false,
+                            Detected = null
+                        },
+                        SelfHarm = new()
+                        {
+                            Filtered = false,
+                            Detected = null
+                        },
+                        Sexual = new()
+                        {
+                            Filtered = false,
+                            Detected = null
+                        },
+                        Violence = new()
+                        {
+                            Filtered = false,
+                            Detected = null
+                        },
+                        Jailbreak = new()
+                        {
+                            Filtered = false,
+                            Detected = false
+                        },
+                        Profanity = new()
+                        {
+                            Filtered = false,
+                            Detected = false
+                        },
+                    }
+                }
+            },
+            SystemFingerprint = "",
+            Usage = new Usage
+            {
+                PromptTokens = 75,
+                CompletionTokens = 25,
+                TotalTokens = 100,
+                PromptTokensDetails = new()
+                {
+                    AudioTokens = 0,
+                    CachedTokens = 0
+                },
+                CompletionTokensDetails = new()
+                {
+                    AudioTokens = 0,
+                    ReasoningTokens = 0,
+                    AcceptedPredictionTokens = 0,
+                    RejectedPredictionTokens = 0
+                }
+            }
+        };
+
+        return output;
+    }
+}