feat: изменил логику анализа отзывов

backend/UniVerse.Infrastructure/ExternalServices/LlmClient.cs

@@ -1,5 +1,6 @@
 using System.Net.Http.Json;
 using System.Text.Json;
+using System.Text.Json.Serialization;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Logging;
 using UniVerse.Application.Interfaces;
@@ -49,11 +50,37 @@ public class LlmClient : ILlmClient
 
         var json = await response.Content.ReadFromJsonAsync<JsonElement>();
         var content = json.GetProperty("choices")[0].GetProperty("message").GetProperty("content").GetString()!;
-        var analysis = JsonSerializer.Deserialize<LlmRawResponse>(content,
+        var analysisJson = NormalizeJsonContent(content);
+        var analysis = JsonSerializer.Deserialize<LlmRawResponse>(analysisJson,
             new JsonSerializerOptions { PropertyNameCaseInsensitive = true })!;
 
-        return new LlmReviewAnalysis(analysis.QualityScore, analysis.Sentiment, analysis.Tags, analysis.IsInformative);
+        return new LlmReviewAnalysis(
+            Math.Clamp(analysis.QualityScore, 0, 1),
+            analysis.Sentiment ?? "",
+            analysis.Tags ?? [],
+            analysis.IsInformative,
+            content);
     }
 
-    private record LlmRawResponse(double QualityScore, string Sentiment, string[] Tags, bool IsInformative);
+    private static string NormalizeJsonContent(string content)
+    {
+        var trimmed = content.Trim();
+        if (!trimmed.StartsWith("```", StringComparison.Ordinal))
+            return trimmed;
+
+        var firstNewLine = trimmed.IndexOf('\n');
+        if (firstNewLine < 0)
+            return trimmed;
+
+        var lastFence = trimmed.LastIndexOf("```", StringComparison.Ordinal);
+        return lastFence > firstNewLine
+            ? trimmed[(firstNewLine + 1)..lastFence].Trim()
+            : trimmed[(firstNewLine + 1)..].Trim();
+    }
+
+    private record LlmRawResponse(
+        [property: JsonPropertyName("quality_score")] double QualityScore,
+        string? Sentiment,
+        string[]? Tags,
+        [property: JsonPropertyName("is_informative")] bool IsInformative);
 }