MAPG-10 add GetNewPosition controller

remove position selecing from GuessController
adapt GuessController to the new view-controller concept

src/Controller/GetNewPosition.php

@@ -0,0 +1,28 @@
+<?php namespace MapGuesser\Controller;
+
+use MapGuesser\Util\Geo\Position;
+use MapGuesser\View\JsonView;
+use MapGuesser\View\ViewBase;
+use mysqli;
+
+class GetNewPosition implements ControllerInterface
+{
+    public function run(): ViewBase
+    {
+        $mysql = new mysqli($_ENV['DB_HOST'], $_ENV['DB_USER'], $_ENV['DB_PASSWORD'], $_ENV['DB_NAME']);
+
+        // demo map
+        $mapId = 1;
+
+        // using RAND() for the time being, could be changed in the future
+        $stmt = $mysql->prepare('SELECT lat, lng FROM places WHERE map_id=? ORDER BY RAND() LIMIT 1');
+        $stmt->bind_param("i", $mapId);
+        $stmt->execute();
+        $place = $stmt->get_result()->fetch_assoc();
+
+        $position = new Position($place['lat'], $place['lng']);
+
+        $data = ['position' => $position->toArray()];
+        return new JsonView($data);
+    }
+}

src/Controller/GuessController.php

@@ -2,13 +2,13 @@
 
 use MapGuesser\Util\Geo\Bounds;
 use MapGuesser\Util\Geo\Position;
+use MapGuesser\View\HtmlView;
+use MapGuesser\View\ViewBase;
 use mysqli;
 
-class GuessController extends BaseController
+class GuessController implements ControllerInterface
 {
-    protected string $view = 'guess';
-
-    protected function operate() : void
+    public function run(): ViewBase
     {
         $mysql = new mysqli($_ENV['DB_HOST'], $_ENV['DB_USER'], $_ENV['DB_PASSWORD'], $_ENV['DB_NAME']);
 
@@ -29,6 +29,7 @@ class GuessController extends BaseController
         $realPosition = new Position($place['lat'], $place['lng']);
         $bounds = Bounds::createDirectly($map['bound_south_lat'], $map['bound_west_lng'], $map['bound_north_lat'], $map['bound_east_lng']);
 
-        $this->variables = compact('realPosition', 'bounds');
+        $data = compact('bounds');
+        return new HtmlView('guess', $data);
     }
 }

views/guess.php

@@ -14,7 +14,6 @@
         </div>
     </div>
     <script>
-        var realPosition = <?= $realPosition->toJson() ?>;
         var guessMapBounds = <?= $bounds->toJson() ?>;
     </script>
     <script src="static/js/mapguesser.js" async defer></script>