james URL configuration refactoring

Inspectron.Epson/PrintServer/ConfigurationSources/EpsonPrintServiceConfiguration.cs

@@ -7,8 +7,8 @@ public class EpsonPrintServiceConfiguration: IPrinterConfigurationSource, IAssig
     public string GroupId { get; set; }
     public string RestaurantId { get; set; }
     public string ApiKey { get; set; }
-    public string? HeartbeatApiUrl { get; set; }
-    public string? PrinterServerKey { get; set; }
+    public string? ApiUrl { get; set; }
+    
 
     public Dictionary<string, PrinterConfiguration> PrinterConfigurations { get; set; }
     public PrinterConfiguration GetConfiguration(string printerAddress)

Inspectron.Epson/PrintServer/DiscoveredPrintersReceiver/JamesDiscoveredPrintersReceiver.cs

@@ -31,7 +31,8 @@ public class JamesDiscoveredPrintersReceiver: IDiscoveredPrintersReceiver
             }).ToList()
         };
 
-        using var requestMessage = new HttpRequestMessage(HttpMethod.Post, "https://api.dev.gastrojames.ch/api/printerServer/discovered-printers");
+        var url = $"{_configuration.ApiUrl?.TrimEnd('/')}/api/printerServer/discovered-printers";
+        using var requestMessage = new HttpRequestMessage(HttpMethod.Post, url);
         requestMessage.Headers.Add("X-Printer-Server-Key", apiKey);
         requestMessage.Content = JsonContent.Create(request);
 

Inspectron.Epson/PrintServer/JobSources/SignalRPrintJobSource.cs

@@ -19,8 +19,9 @@ public class SignalRPrintJobSource: IPrintJobSource
         _groupConfiguration = groupConfiguration;
         _logger = logger;
 
+        var hubUrl = $"{groupConfiguration.ApiUrl?.TrimEnd('/')}/hubs/printer-servers";
         _connection = new HubConnectionBuilder()
-            .WithUrl("https://api.dev.gastrojames.ch/hubs/printer-servers")
+            .WithUrl(hubUrl)
             .WithAutomaticReconnect(new InfiniteRetryPolicy())
             .Build();