Fix ListModelsAsync JSON deserialization error (#1)

- Change ModelInfo.ParametersNumber from long? to string? to handle
  API responses like "8B", "70B" instead of numeric values
- Add guardrail tests for various parameters_number formats
- Bump version to 1.0.2

Author: GmausDev

src/CompactifAI.Client/CompactifAI.Client.csproj

@@ -8,7 +8,7 @@
 
     <!-- NuGet Package Properties -->
     <PackageId>CompactifAI.Client</PackageId>
-    <Version>1.0.1</Version>
+    <Version>1.0.2</Version>
     <Authors>GmausDev</Authors>
     <Company>GmausDev</Company>
     <Description>A .NET client library for the CompactifAI API. Easily integrate AI chat completions, text completions, and audio transcription into your .NET applications.</Description>

src/CompactifAI.Client/Models/ModelModels.cs

@@ -50,10 +50,10 @@ public class ModelInfo
     public string OwnedBy { get; set; } = string.Empty;
 
     /// <summary>
-    /// The number of parameters in the model.
+    /// The number of parameters in the model (e.g., "8B", "70B").
     /// </summary>
     [JsonPropertyName("parameters_number")]
-    public long? ParametersNumber { get; set; }
+    public string? ParametersNumber { get; set; }
 
     /// <summary>
     /// The capabilities of the model.

tests/CompactifAI.Client.Tests/CompactifAIClientTests.cs

@@ -279,7 +279,7 @@ public async Task GetModelAsync_ReturnsModelInfo()
         {
             Id = CompactifAIModels.DeepSeekR1_Slim,
             OwnedBy = "compactifai",
-            ParametersNumber = 70000000000
+            ParametersNumber = "70B"
         };
 
         _mockHttp.When(HttpMethod.Get, $"https://api.compactif.ai/v1/models/{CompactifAIModels.DeepSeekR1_Slim}")
@@ -290,7 +290,7 @@ public async Task GetModelAsync_ReturnsModelInfo()
 
         // Assert
         Assert.Equal(CompactifAIModels.DeepSeekR1_Slim, result.Id);
-        Assert.Equal(70000000000, result.ParametersNumber);
+        Assert.Equal("70B", result.ParametersNumber);
     }
 
     #endregion

tests/CompactifAI.Client.Tests/ModelsTests.cs

@@ -259,7 +259,7 @@ public void ModelsResponse_Deserializes_Correctly()
                     "object": "model",
                     "created": 1234567890,
                     "owned_by": "compactifai",
-                    "parameters_number": 8000000000,
+                    "parameters_number": "8B",
                     "capabilities": {
                         "chat": true,
                         "completion": true,
@@ -276,11 +276,75 @@ public void ModelsResponse_Deserializes_Correctly()
         Assert.Equal("list", response.Object);
         Assert.Single(response.Data);
         Assert.Equal("cai-llama-3-1-8b-slim", response.Data[0].Id);
-        Assert.Equal(8000000000, response.Data[0].ParametersNumber);
+        Assert.Equal("8B", response.Data[0].ParametersNumber);
         Assert.True(response.Data[0].Capabilities?.Chat);
         Assert.False(response.Data[0].Capabilities?.Transcription);
     }
 
+    [Theory]
+    [InlineData("\"8B\"", "8B")]
+    [InlineData("\"70B\"", "70B")]
+    [InlineData("\"1.5B\"", "1.5B")]
+    [InlineData("\"8000000000\"", "8000000000")]
+    [InlineData("null", null)]
+    public void ModelsResponse_ParametersNumber_HandlesVariousFormats(string parametersValue, string? expected)
+    {
+        var json = $$"""
+        {
+            "object": "list",
+            "data": [
+                {
+                    "id": "test-model",
+                    "object": "model",
+                    "created": 1234567890,
+                    "owned_by": "compactifai",
+                    "parameters_number": {{parametersValue}},
+                    "capabilities": {
+                        "chat": true,
+                        "completion": false,
+                        "transcription": false
+                    }
+                }
+            ]
+        }
+        """;
+
+        var response = JsonSerializer.Deserialize<ModelsResponse>(json, _jsonOptions);
+
+        Assert.NotNull(response);
+        Assert.Single(response.Data);
+        Assert.Equal(expected, response.Data[0].ParametersNumber);
+    }
+
+    [Fact]
+    public void ModelsResponse_Deserializes_WithMissingParametersNumber()
+    {
+        var json = """
+        {
+            "object": "list",
+            "data": [
+                {
+                    "id": "test-model",
+                    "object": "model",
+                    "created": 1234567890,
+                    "owned_by": "compactifai",
+                    "capabilities": {
+                        "chat": true,
+                        "completion": false,
+                        "transcription": false
+                    }
+                }
+            ]
+        }
+        """;
+
+        var response = JsonSerializer.Deserialize<ModelsResponse>(json, _jsonOptions);
+
+        Assert.NotNull(response);
+        Assert.Single(response.Data);
+        Assert.Null(response.Data[0].ParametersNumber);
+    }
+
     #endregion
 
     #region Tool Serialization Tests