Added Google Maps Static Key setting

lib/StaticMap.class.php

@@ -1,18 +1,37 @@
 <?php
 
 class WPStrava_StaticMap {
-	
+
+	/**
+	 * Get an image tag to a static google map. Will render with
+	 * detailed polyline if not greater than 1865 chars, otherwise
+	 * rendering will use summary polyline.
+	 *
+	 * @static
+	 * @access public
+	 * @param object $ride   Ride object from strava.
+	 * @param int    $height Height of map in pixels.
+	 * @param int    $width  Width of map in pixels.
+	 */
 	public static function get_image_tag( $ride, $height = 320, $width = 480 ) {
-		$url = "http://maps.google.com/maps/api/staticmap?maptype=terrain&size={$width}x{$height}&sensor=false&path=color:0xFF0000BF|weight:2|enc:";
+		$key = WPStrava::get_instance()->settings->gmaps_key;
+
+		// Short circuit if missing key or ride object doesn't have the data we need.
+		if ( empty( $key ) || empty( $ride->map ) ) {
+			return '';
+		}
+
+		$url = "https://maps.googleapis.com/maps/api/staticmap?maptype=terrain&size={$width}x{$height}&sensor=false&key={$key}&path=color:0xFF0000BF|weight:2|enc:";
 		$url_len = strlen( $url );
 		$max_chars = 1865;
 
-		if ( $url_len + strlen( $ride->map->polyline ) < $max_chars )
+		if ( ! empty( $ride->map->polyline ) && ( $url_len + strlen( $ride->map->polyline ) < $max_chars ) ) {
 			$url .= $ride->map->polyline;
-		else
+		} else {
 			$url .= $ride->map->summary_polyline;
-		
-		return "<img src='{$url}' />";
+		}
+
+		return "<img class='wp-strava-img' src='{$url}' />";
 	}
 
-}
+}