add rule count to result of rules API controller

ref #272

src/FilterLists.Api/V1/Controllers/BaseController.cs

@@ -10,6 +10,10 @@ public class BaseController : Controller
     {
         protected readonly SeedService SeedService;
 
+        public BaseController()
+        {
+        }
+
         protected BaseController(SeedService seedService)
         {
             SeedService = seedService;

src/FilterLists.Api/V1/Controllers/RulesController.cs

@@ -0,0 +1,19 @@
+using System.Threading.Tasks;
+using FilterLists.Services;
+using Microsoft.AspNetCore.Mvc;
+
+namespace FilterLists.Api.V1.Controllers
+{
+    public class RulesController : BaseController
+    {
+        private readonly RuleService _ruleService;
+
+        public RulesController(RuleService ruleService)
+        {
+            _ruleService = ruleService;
+        }
+
+        [HttpGet]
+        public async Task<IActionResult> Index() => Json(new {Count = await _ruleService.GetCountAllActiveRules()});
+    }
+}

src/FilterLists.Services/DependencyInjection/Extensions/ConfigureServicesCollection.cs

@@ -20,9 +20,10 @@ public static void AddFilterListsServices(this IServiceCollection services, ICon
                         options.UseMySql(configuration.GetConnectionString("FilterListsConnection"),
                                    b => b.MigrationsAssembly("FilterLists.Api"))
                                .EnableSensitiveDataLogging());
-            services.TryAddScoped<FilterListService>();
-            services.TryAddScoped<SeedService>();
             services.TryAddScoped<SnapshotService>();
+            services.TryAddScoped<FilterListService>();
+            services.TryAddScoped<RuleService>();
+            services.TryAddScoped<SeedService>();
             services.AddAutoMapper();
         }
     }