Resolve users IP, then filter spotify results. Avoids the dreaded 'Un…

…available in your country'.

README.md

@@ -23,4 +23,3 @@ Known Bugs
 ----------
 
 * Sporadically you might get tracks playing back in the wrong order, this is because the resolution callbacks are async and very occasionally return in the wrong order.
-* Occasionally a track might fail to play due to country restrictions. This is because I've not actually implemented them - very VERY few tracks are not available in all current territories.

spotiproxy.php

@@ -6,21 +6,45 @@
 
     $returnData = array();
 
+    $country = geoip_country_code_by_name($_SERVER['REMOTE_ADDR']);
+
     if (isset($aData['track']) && $aData['track']) {
         if (is_array($aData['track'])) {
-            $aTrack = (array) array_shift($aData['track']);
+            $aTracks = $aData['track'];
         } else {
-            $aTrack = (array) $aData['track'];
+            $aTracks = array($aData['track']);
         }
 
-        $aArtist = (array) $aTrack['artist'];
+        foreach ($aTracks as $track) {
+
+            $aTerritories = explode(' ', (string) $track->album->availability->territories);
+
+            if (in_array($country, $aTerritories)){
+
+                $aArtist = $track->artist;
+                $artistName = '';
 
-        $returnData = array(
-            'uri' => $aTrack['@attributes']['href'],
-            'name' => $aTrack['name'],
-            'artist' => $aArtist['name'],
-            'length' => $aTrack['length'],
-        );
+                if ($track->artist->count() > 1) {
+                    $aArtists = array();
+                    foreach ($track->artist as $artist) {
+                        $aArtists []= $artist->name;
+                    }
+
+                    $artistName = implode(', ', $aArtists);
+                } else {
+                    $artistName = $track->artist->name;
+                }
+
+                $returnData = array(
+                    'uri' => (string) $track['href'],
+                    'name' => (string) $track->name,
+                    'artist' => (string) $artistName,
+                    'length' => (int) $track->length,
+                );
+
+                break;
+            }
+        }
 
     }