API enhancements, player-attribute according naming convention

api.lua

@@ -1,11 +1,11 @@
 -- get current skin
-skins.get_player_skin = function(player)
-	local skin = player:get_attribute("skin")
+function skins.get_player_skin(player)
+	local skin = player:get_attribute("skinsdb:skin_key")
 	return skins.get(skin) or skins.get(skins.default)
 end
 
--- Set skin
-skins.set_player_skin = function(player, skin)
+-- Assign skin to player
+function skins.assign_player_skin(player, skin)
 	local skin_obj
 	local skin_key
 	if type(skin) == "string" then
@@ -13,18 +13,22 @@ skins.set_player_skin = function(player, skin)
 	else
 		skin_obj = skin
 	end
-	skin_key = skin:get_meta("_key")
+	skin_key = skin_obj:get_key()
 
 	if skin_key == skins.default then
 		skin_key = ""
 	end
-
-	player:set_attribute("skin", skin_key)
-	skins.update_player_skin(player)
+	player:set_attribute("skinsdb:skin_key", skin_key)
 end
 
 -- update visuals
-skins.update_player_skin = function(player)
+function skins.update_player_skin(player)
 	local skin = skins.get_player_skin(player)
 	skin:set_skin(player)
 end
+
+-- Assign and update
+function skins.set_player_skin(player, skin)
+	skins.assign_player_skin(player, skin)
+	skins.update_player_skin(player)
+end

skin_meta_api.lua

@@ -26,6 +26,10 @@ end
 -- Skin methods
 -- In this implementation it is just access to attrubutes wrapped
 -- but this way allow to redefine the functionality for more complex skins provider
+function skin_class:get_key()
+	return self._key
+end
+
 function skin_class:set_meta(key, value)
 	self[key] = value
 end
@@ -35,10 +39,9 @@ function skin_class:get_meta(key)
 end
 
 function skin_class:get_meta_string(key)
-	return tostring(self[key] or "")
+	return tostring(self:get_meta(key) or "")
 end
 
-
 function skin_class:set_texture(value)
 	self._texture = value
 end