1 files changed, 53 insertions, 0 deletions
diff --git a/Software/Visual_Studio_22/Tango.Portal.Chat.Web/Models/Contracts.cs b/Software/Visual_Studio_22/Tango.Portal.Chat.Web/Models/Contracts.cs
new file mode 100644
index 000000000..d968d0738
--- /dev/null
+++ b/Software/Visual_Studio_22/Tango.Portal.Chat.Web/Models/Contracts.cs
@@ -0,0 +1,53 @@
+using System.Collections.Generic;
+using System.Text.Json.Serialization;
+
+namespace ChatADX.Web.Models
+{
+    public sealed class ProposeKqlResult
+    {
+        [JsonPropertyName("kql")]
+        public string Kql { get; set; } = string.Empty;
+
+        [JsonPropertyName("parameterTypes")]
+        public Dictionary<string, string>? ParameterTypes { get; set; }
+
+        [JsonPropertyName("parameters")]
+        public Dictionary<string, string> Parameters { get; set; } = new();
+
+        // NEW: be flexible about shapes from the model
+        [JsonPropertyName("assumptions")]
+        [JsonConverter(typeof(FlexibleStringListConverter))]
+        public List<string>? Assumptions { get; set; }
+
+        [JsonPropertyName("why")]
+        public string? Why { get; set; }
+
+        [JsonPropertyName("assistant")]
+        public string Assistant { get; set; } = string.Empty;
+    }
+
+    public sealed class ChatMessage
+    {
+        // "user" | "assistant"
+        public string Role { get; set; } = "user";
+        public string Content { get; set; } = string.Empty;
+    }
+
+    public sealed class ChatRequest
+    {
+        public List<ChatMessage>? History { get; set; }
+
+        public string? ThreadId { get; set; }  // shared Assistants thread for the whole chat
+        public string Question { get; set; } = string.Empty;
+        public string? From { get; set; }
+        public string? To { get; set; }
+    }
+
+    public sealed class ChatResponse
+    {
+        public string? ThreadId { get; set; }  // shared Assistants thread for the whole chat
+        public string Answer { get; set; } = string.Empty;
+        public string UsedKql { get; set; } = string.Empty;
+        public object? Preview { get; set; }
+    }
+}