refactor(public): in-process ITrackDataService on server prerender; HTTP on WASM

DeepDrftPublic/Services/TrackDirectDataService.cs

@@ -0,0 +1,33 @@
+using DeepDrftData;
+using DeepDrftModels.Entities;
+using DeepDrftPublic.Client.Services;
+using Models.Common;
+using NetBlocks.Models;
+
+namespace DeepDrftPublic.Services;
+
+/// <summary>
+/// Server-side <see cref="ITrackDataService"/> that calls <see cref="ITrackService"/>
+/// in-process (EF Core / SQL). Replaces the loopback HTTP hop during SSR prerender:
+/// the WASM interactive pass still uses <see cref="Client.Services.TrackClientDataService"/>
+/// over HTTP, but on the server we already have the domain service in DI.
+/// </summary>
+public class TrackDirectDataService : ITrackDataService
+{
+    private readonly ITrackService _trackService;
+
+    public TrackDirectDataService(ITrackService trackService)
+    {
+        _trackService = trackService;
+    }
+
+    public async Task<ApiResult<PagedResult<TrackEntity>>> GetPage(
+        int pageNumber,
+        int pageSize,
+        string? sortColumn = null,
+        bool sortDescending = false)
+    {
+        var result = await _trackService.GetPaged(pageNumber, pageSize, sortColumn, sortDescending);
+        return ApiResult<PagedResult<TrackEntity>>.From(result);
+    }
+}

DeepDrftPublic/Startup.cs

@@ -1,6 +1,7 @@
 using DeepDrftData;
 using DeepDrftData.Data;
 using DeepDrftData.Repositories;
+using DeepDrftPublic.Client.Services;
 using DeepDrftPublic.Services; // DarkModeService namespace (within this host project)
 using Microsoft.EntityFrameworkCore;
 
@@ -28,6 +29,11 @@ public static class Startup
             .AddScoped<TrackRepository>()
             .AddScoped<TrackManager>()
             .AddScoped<ITrackService>(sp => sp.GetRequiredService<TrackManager>());
+
+        // Override the WASM HTTP-backed ITrackDataService (registered earlier by
+        // DeepDrftPublic.Client.Startup.ConfigureDomainServices) with an in-process
+        // adapter for SSR prerender. Last registration wins for single-resolution.
+        builder.Services.AddScoped<ITrackDataService, TrackDirectDataService>();
     }
 
     public static string GetKestrelUrl(this WebApplicationBuilder builder)