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(.module:
  [lux #*
   [abstract
    ["." monad (#+ do)]]
   [control
    ["." try (#+ Try)]
    [security
     ["!" capability]]
    [concurrency
     ["." promise (#+ Promise)]]]
   [data
    [text
     ["%" format (#+ format)]]]
   [world
    ["." file (#+ Path File Directory)]
    ["." console (#+ Console)]]]
  ["." /// #_
   [command (#+ Command)]
   ["#" profile]
   ["#." action (#+ Action)]])

(def: (clean_files! root)
  (-> (Directory Promise) (Promise (Try Any)))
  (do {! ///action.monad}
    [nodes (: (Promise (Try (List (File Promise))))
              (!.use (\ root files) []))
     _ (monad.map ! (function (_ node)
                      (!.use (\ node delete) []))
                  nodes)]
    (wrap [])))

(def: #export (success path)
  (-> ///.Target Text)
  (format "Successfully cleaned target directory: " path))

(def: #export (do! console fs profile)
  (-> (Console Promise) (file.System Promise) (Command Any))
  (do {! ///action.monad}
    [#let [target (get@ #///.target profile)]
     root (: (Promise (Try (Directory Promise)))
             (!.use (\ fs directory) target))
     _ (loop [root root]
         (do !
           [_ (..clean_files! root)
            subs (: (Promise (Try (List (Directory Promise))))
                    (!.use (\ root directories) []))
            _ (monad.map ! recur subs)]
           (!.use (\ root discard) [])))]
    (console.write_line (..success target) console)))