Lots of groundwork and the app runs but not currently working to generate embeddings.

VectorSearchApp/Services/EmbeddingService.cs

@@ -0,0 +1,52 @@
+using System.Net.Http.Json;
+using VectorSearchApp.Configuration;
+using VectorSearchApp.Models;
+
+namespace VectorSearchApp.Services;
+
+public interface IEmbeddingService
+{
+    Task<float[]> GenerateEmbeddingAsync(string text, CancellationToken cancellationToken = default);
+}
+
+public class EmbeddingService : IEmbeddingService
+{
+    private readonly HttpClient _httpClient;
+    private readonly string _modelName;
+    private readonly int _dimension;
+
+    public EmbeddingService(EmbeddingConfiguration config)
+    {
+        _modelName = config.ModelName;
+        _dimension = config.Dimension;
+        _httpClient = new HttpClient
+        {
+            BaseAddress = new Uri("https://api-inference.huggingface.co/models/")
+        };
+        _httpClient.DefaultRequestHeaders.Add("User-Agent", "VectorSearchApp");
+    }
+
+    public async Task<float[]> GenerateEmbeddingAsync(string text, CancellationToken cancellationToken = default)
+    {
+        var request = new
+        {
+            inputs = text
+        };
+
+        var response = await _httpClient.PostAsJsonAsync(_modelName, request, cancellationToken);
+        
+        if (!response.IsSuccessStatusCode)
+        {
+            throw new InvalidOperationException($"Failed to generate embedding: {response.StatusCode}");
+        }
+
+        var result = await response.Content.ReadFromJsonAsync<float[][]>(cancellationToken: cancellationToken);
+        
+        if (result?.Length > 0 && result[0].Length > 0)
+        {
+            return result[0];
+        }
+
+        throw new InvalidOperationException("Failed to generate embedding");
+    }
+}