feat: Implement real Daya API integration with configurable mock/real service

src/CMSMicroservice.Infrastructure/ConfigureServices.cs

@@ -32,7 +32,39 @@ public static class ConfigureServices
         services.AddScoped<INetworkPlacementService, NetworkPlacementService>();
         services.AddScoped<IAlertService, AlertService>();
         services.AddScoped<IUserNotificationService, UserNotificationService>();
-        services.AddScoped<IDayaLoanApiService, MockDayaLoanApiService>(); // Mock - جایگزین با Real برای Production
+        
+        // Daya Loan API Service - قابل تغییر بین Mock و Real
+        var useMockDayaApi = configuration.GetValue<bool>("DayaApi:UseMock", false);
+        
+        if (useMockDayaApi)
+        {
+            // Mock برای Development/Testing
+            services.AddScoped<IDayaLoanApiService, MockDayaLoanApiService>();
+        }
+        else
+        {
+            // Real Implementation با HttpClient
+            services.AddHttpClient<IDayaLoanApiService, DayaLoanApiService>()
+                .SetHandlerLifetime(TimeSpan.FromMinutes(5))
+                .ConfigureHttpClient((sp, client) =>
+                {
+                    var config = sp.GetRequiredService<IConfiguration>();
+                    
+                    // Base Address
+                    var baseAddress = config["DayaApi:BaseAddress"] ?? "https://testdaya.tadbirandishan.com";
+                    client.BaseAddress = new Uri(baseAddress);
+                    
+                    // Merchant Permission Key
+                    var permissionKey = config["DayaApi:MerchantPermissionKey"];
+                    if (!string.IsNullOrEmpty(permissionKey))
+                    {
+                        client.DefaultRequestHeaders.Add("merchant-permission-key", permissionKey);
+                    }
+                    
+                    // Timeout
+                    client.Timeout = TimeSpan.FromSeconds(30);
+                });
+        }
         
         // Payment Gateway Service - فقط Daya (درگاه اینترنتی از Gateway میاد نه CMS)
         var useRealPaymentGateway = configuration.GetValue<bool>("UseRealPaymentGateway", false);