feat(assets): update scanner background service, derivative entities, and dynamic settings

FinlyticAssets/Util/AssetsMqttClient.cs

@@ -1,13 +1,8 @@
 using System.Text.Json;
+using FinlyticAssets.Entities;
 using FinlyticAssets.Services;
-using FinlyticCore.Entities.Assets;
 using FinlyticCore.Models;
-using FinlyticCore.Models.Assets;
 using FinlyticCore.Util;
-using Microsoft.Extensions.Configuration;
-using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.Hosting;
-using Microsoft.Extensions.Logging;
 
 namespace FinlyticAssets.Util;
 
@@ -61,6 +56,7 @@ public class AssetsMqttClient(
         await SubscribeAsync("services/request/assets_Get/#");
         await SubscribeAsync("services/request/assets_Search/#");
         await SubscribeAsync("services/request/assets_GetDiscovery/#");
+        await SubscribeAsync("services/request/assets_GetDerivatives/#");
         await SubscribeAsync("services/request/assets_FetchLogo/#");
         await SubscribeAsync("services/request/health_Ping/#");
         await SubscribeAsync("services/config/updated/#");
@@ -119,6 +115,9 @@ public class AssetsMqttClient(
                 case "assets_GetDiscovery":
                     responseData = await HandleAssetsGetDiscoveryAsync(payload, dbService);
                     break;
+                case "assets_GetDerivatives":
+                    responseData = (await HandleAssetsGetDerivativesAsync(payload, dbService)).Cast<AssetEntity>().ToList();
+                    break;
             }
 
             string defaultResponseTopic = $"services/response/{channel}/{correlationId}";
@@ -216,4 +215,24 @@ public class AssetsMqttClient(
         }
         return await dbService.GetDiscoveryAssetsAsync(limit);
     }
+
+    private async Task<List<DerivativeEntity>> HandleAssetsGetDerivativesAsync(string payload, IAssetsDbService dbService)
+    {
+        if (string.IsNullOrWhiteSpace(payload)) return [];
+
+        try
+        {
+            var req = JsonSerializer.Deserialize(payload, FinlyticJsonSerializerContext.Default.GetDerivativesRequest);
+            if (req != null && !string.IsNullOrEmpty(req.UnderlyingIsin))
+            {
+                return await dbService.GetDerivativesByUnderlyingAsync(req.UnderlyingIsin, req.OptionType, req.ShouldForceRefresh);
+            }
+        }
+        catch (Exception ex)
+        {
+            logger.LogError(ex, "[{Channel}] Error parsing GetDerivativesRequest payload.", "AssetsChannel");
+        }
+
+        return [];
+    }
 }