module Hack.Contrib.Middleware.URLMap (url_map) where
import Hack
import Hack.Contrib.Utils
import List (find, isPrefixOf)
import MPS.Light
import Prelude hiding ((.), (^), (>), ())
type RoutePath = (String, Application)
url_map :: [RoutePath] -> Middleware
url_map h app = \env ->
let path = env.path_info
script = env.script_name
mod_env location = env
{ scriptName = script ++ location
, pathInfo = path.drop (location.length)
}
in
case h.find (fst > (`isPrefixOf` path) ) of
Nothing -> app env
Just (location, app') -> app' (mod_env location)