Update route handling to modify existing routes instead of duplicating

VirtualDDNSRouter.Server/Program.cs

@@ -1,3 +1,4 @@
+using Microsoft.AspNetCore.HttpOverrides;
 using VirtualDDNSRouter.Server.Interfaces;
 using VirtualDDNSRouter.Server.Services;
 using Route = VirtualDDNSRouter.Server.Models.Route;
@@ -12,6 +13,12 @@ builder.Services.AddOpenApi();
 
 var app = builder.Build();
 
+app.UseForwardedHeaders(new ForwardedHeadersOptions
+{
+    ForwardedHeaders = ForwardedHeaders.XForwardedFor |
+                       ForwardedHeaders.XForwardedProto
+});  
+
 if (app.Environment.IsDevelopment())
 {
     app.MapOpenApi();
@@ -19,29 +26,42 @@ if (app.Environment.IsDevelopment())
 
 List<Route> routes = new List<Route>();
 
-app.MapPut("/setip/{path}/{port}/{apiKey}", async (IYamlParser yamlParser ,HttpContext context, string path, UInt16 port, string apiKey) =>
+app.MapGet("/setip/{path}/{port}/{apiKey}", async (IYamlParser yamlParser ,HttpContext context, string path, UInt16 port, string apiKey) =>
 {
     var rules = await yamlParser.GetRules();
+    app.Logger.LogInformation($"New setip request for {path} with port {port}.");
     var ruleValid = rules.Any(r => r.path == path && r.apiKey == apiKey);
     if (!ruleValid)
     {
+        app.Logger.LogInformation($"Invalid rule for {path} with port {port}.");
         return Results.StatusCode(StatusCodes.Status403Forbidden);
     }
     var clientIp = context.Connection.RemoteIpAddress;
-    if (clientIp is null) return Results.BadRequest("Could not get the client ip address");
-    routes.Add(new Route
+    if (clientIp is null)
     {
-        ipAddress = clientIp,
-        path = path,
-        port = port
-    });
-    return Results.Created();
+        app.Logger.LogInformation($"Could not get the client ip address for {path} with port {port}.");       
+        return Results.BadRequest("Could not get the client ip address");
+    }
+    var existingRoute = routes.FirstOrDefault(r => r.path == path);
+    if (existingRoute is not null)
+    {
+        existingRoute.ipAddress = clientIp;
+        existingRoute.port = port;
+    }
+    else
+    {
+        routes.Add(new Route
+        {
+            ipAddress = clientIp,
+            path = path,
+            port = port
+        });
+    }
+    return Results.Ok($"goto/{path}");
 });
 
 app.MapGet("/goto/{path}", (string path) =>
 {
-    var ruleExists = routes.Any(r => r.path == path);
-    if (!ruleExists) Results.NoContent();
     var redirectRoute = routes.FirstOrDefault(r => r.path == path);
     if (redirectRoute is null) return Task.FromResult(Results.NotFound());
     return Task.FromResult(Results.Redirect($"http://{redirectRoute.ipAddress}:{redirectRoute.port}"));