#233 adding google analytics support to the map page

GanjooRazor/Pages/Map.cshtml

@@ -144,9 +144,24 @@
         <div class="century" id="rangeText"></div>
         <div>
             <p>
-               نقشهٔ خاستگاه سخن‌سرایان گنجور
+                نقشهٔ خاستگاه سخن‌سرایان گنجور
             </p>
         </div>
     </div>
+    @if (!string.IsNullOrEmpty(ViewData["GoogleAnalyticsCode"].ToString()))
+    {
+        <script>
+            (function (i, s, o, g, r, a, m) {
+                i['GoogleAnalyticsObject'] = r; i[r] = i[r] || function () {
+                    (i[r].q = i[r].q || []).push(arguments)
+                }, i[r].l = 1 * new Date(); a = s.createElement(o),
+                    m = s.getElementsByTagName(o)[0]; a.async = 1; a.src = g; m.parentNode.insertBefore(a, m)
+            })(window, document, 'script', 'https://www.google-analytics.com/analytics.js', 'ga');
+
+            ga('create', '@ViewData["GoogleAnalyticsCode"]', 'auto');
+            ga('send', 'pageview');
+
+        </script>
+    }
 </body>
 </html>

GanjooRazor/Pages/Map.cshtml.cs

@@ -4,6 +4,7 @@ using System.Net.Http;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.RazorPages;
+using Microsoft.Extensions.Configuration;
 using Newtonsoft.Json.Linq;
 using RMuseum.Models.Ganjoor.ViewModels;
 
@@ -73,6 +74,7 @@ namespace GanjooRazor.Pages
 
         public async Task<IActionResult> OnGetAsync()
         {
+            ViewData["GoogleAnalyticsCode"] = _configuration["GoogleAnalyticsCode"];
             await _PreparePoetGroups();
             return Page();
         }
@@ -82,13 +84,15 @@ namespace GanjooRazor.Pages
         /// </summary>
         private readonly HttpClient _httpClient;
 
+        /// <summary>
+        /// configration file reader (appsettings.json)
+        /// </summary>
+        private readonly IConfiguration _configuration;
 
-
-        public MapModel(
-            HttpClient httpClient
-            )
+        public MapModel(HttpClient httpClient, IConfiguration configuration)
         {
             _httpClient = httpClient;
+            _configuration = configuration;
         }
     }
 }