MAPG-73 introduce map selection

unify CSS

src/Controller/MapsController.php

@@ -0,0 +1,60 @@
+<?php
+
+namespace MapGuesser\Controller;
+
+use MapGuesser\Database\Query\Select;
+use MapGuesser\Database\RawExpression;
+use MapGuesser\Interfaces\Controller\IController;
+use MapGuesser\Interfaces\Database\IResultSet;
+use MapGuesser\Interfaces\View\IView;
+use MapGuesser\Util\Geo\Bounds;
+use MapGuesser\View\HtmlView;
+
+class MapsController implements IController
+{
+    public function run(): IView
+    {
+        $select = new Select(\Container::$dbConnection, 'maps');
+        $select->columns([
+            ['maps', 'id'],
+            ['maps', 'name'],
+            ['maps', 'description'],
+            ['maps', 'bound_south_lat'],
+            ['maps', 'bound_west_lng'],
+            ['maps', 'bound_north_lat'],
+            ['maps', 'bound_east_lng'],
+            new RawExpression('COUNT(places.id) AS num_places')
+        ]);
+        $select->leftJoin('places', ['places', 'map_id'], '=', ['maps', 'id']);
+        $select->orderBy('name');
+
+        $result = $select->execute();
+
+        $maps = [];
+        while ($map = $result->fetch(IResultSet::FETCH_ASSOC)) {
+            $bounds = Bounds::createDirectly($map['bound_south_lat'], $map['bound_west_lng'], $map['bound_north_lat'], $map['bound_east_lng']);
+
+            $map['area'] = $this->formatMapArea($bounds->calculateApproximateArea());
+
+            $maps[] = $map;
+        }
+
+        $data = ['maps' => $maps];
+        return new HtmlView('maps', $data);
+    }
+
+    private function formatMapArea(float $area): string
+    {
+        //TODO: this should be formatted more properly
+
+        if ($area < 100000.0) {
+            return round($area, 0) . ' m^2';
+        } elseif ($area < 100000000.0) {
+            return round($area / 1000000.0, 0) . ' km^2';
+        } elseif ($area < 10000000000.0) {
+            return round($area / 1000000.0, -2) . ' km^2';
+        } else {
+            return round($area / 1000000.0, -4) . ' km^2';
+        }
+    }
+}