added support for url mapping and viitors

Oqtane.Client/Services/VisitorService.cs

@@ -0,0 +1,32 @@
+using Oqtane.Models;
+using System.Threading.Tasks;
+using System.Net.Http;
+using System.Linq;
+using System.Collections.Generic;
+using Oqtane.Documentation;
+using Oqtane.Shared;
+using System;
+
+namespace Oqtane.Services
+{
+    [PrivateApi("Don't show in the documentation, as everything should use the Interface")]
+    public class VisitorService : ServiceBase, IVisitorService
+    {
+        
+        private readonly SiteState _siteState;
+
+        public VisitorService(HttpClient http, SiteState siteState) : base(http)
+        {
+            
+            _siteState = siteState;
+        }
+
+        private string Apiurl => CreateApiUrl("Visitor", _siteState.Alias);
+
+        public async Task<List<Visitor>> GetVisitorsAsync(int siteId, DateTime fromDate)
+        {
+            List<Visitor> visitors = await GetJsonAsync<List<Visitor>>($"{Apiurl}?siteid={siteId}&fromdate={fromDate.ToString("dd-MMM-yyyy")}");
+            return visitors.OrderByDescending(item => item.VisitedOn).ToList();
+        }
+    }
+}