better ui

YongeStreet/Controllers/ApiController.cs

@@ -17,9 +17,16 @@ public class ApiController:  Controller
         _logger = logger;
     }
 
-    public JsonResult Roads(string city, int year=2025)
+    public ActionResult Roads(string city, string date="")
     {
-        return Json(_dataService.GetRoads(city, year));
+        var extractDate = Util.ParseDateOnly(date);
+        if (!extractDate.HasValue)
+        {
+            return BadRequest($"Cannot parse provided date {date}.  The date must be in the format yyyy-MM-dd.");
+        }
+        return Json(_dataService.GetRoads(city, extractDate.Value));
+      
+        
     }
     
 }

YongeStreet/Controllers/HomeController.cs

@@ -5,7 +5,7 @@ using YongeStreet.Services;
 
 namespace YongeStreet.Controllers;
 
-public record CityModel(string City, IList<CityRoadLengthStats> CityRoadLengthStats);
+public record CityModel(string City, IList<CityRoadLengthStats> CityRoadLengthStats, DateOnly Date);
 
 public record IndexModel(IList<CityOverview> Cities);
 
@@ -20,10 +20,11 @@ public class HomeController : Controller
         _dataService = dataService;
     }
 
-    public IActionResult City(string city)
+    public IActionResult City(string city, string date)
     {
         var cityRoadLengthStats = _dataService.GetCityRoadLengthStats(city);
-        return View(new CityModel(city, cityRoadLengthStats));
+        var parsedDate = Util.ParseDateOnly(date) ?? new DateOnly(2025, 1, 1);
+        return View(new CityModel(city, cityRoadLengthStats, parsedDate ));
     }
 
     public IActionResult Index()

YongeStreet/Controllers/Util.cs

@@ -0,0 +1,21 @@
+namespace YongeStreet.Controllers;
+
+public static class Util
+{
+    public static DateOnly? ParseDateOnly(string? date)
+    {
+        if (string.IsNullOrEmpty(date))
+        {
+            return new DateOnly(2025, 1, 1);
+        }
+        try
+        {
+            return DateOnly.ParseExact(date, "yyyy-MM-dd");
+        }
+        catch (FormatException e)
+        {
+            return null;
+        }
+    } 
+    
+}