switch to local rendering of static map

controllers/controllers.php

@@ -898,3 +898,27 @@ $app->get('/airport-info', function() use($app){
     $app->response()->body(json_encode($response));
   }
 });
+
+$app->get('/map-img', function() use($app) {
+
+  $params = $app->request()->params();
+
+  $app->response()['Content-type'] = 'image/png';
+
+  $params = [
+    'marker[]' => 'lat:'.$params['lat'].';lng:'.$params['lng'].';icon:small-blue-cutout',
+    'basemap' => 'custom',
+    'width' => $params['w'],
+    'height' => $params['h'],
+    'zoom' => $params['z'],
+    'tileurl' => Config::$mapTileURL,
+    'token' => Config::$atlasToken,
+  ];
+
+  $ch = curl_init('https://atlas.p3k.io/map/img');
+  curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
+  curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($params));
+  curl_exec($ch);
+
+});
+

lib/config.template.php

@@ -20,6 +20,8 @@ class Config {
   public static $twitterClientID = '';
   public static $twitterClientSecret = '';
 
+  public static $mapTileURL = '';
+
   // https://developers.google.com/maps/documentation/javascript/get-api-key
   public static $googleMapsAPIKey = '';
 }

lib/helpers.php

@@ -370,7 +370,14 @@ function get_micropub_source(&$user, $url, $properties) {
 }
 
 function static_map($latitude, $longitude, $height=180, $width=700, $zoom=14) {
-  return 'https://atlas.p3k.io/map/img?marker[]=lat:' . $latitude . ';lng:' . $longitude . ';icon:small-blue-cutout&basemap=gray&width=' . $width . '&height=' . $height . '&zoom=' . $zoom;
+  $params = [
+    'lat' => $latitude,
+    'lng' => $longitude,
+    'h' => $height,
+    'w' => $width,
+    'z' => $zoom,
+  ];
+  return '/map-img?'.http_build_query($params);
 }
 
 function relative_time($date) {