(.module:
  [library
   [lux (#- Name)
    [abstract
     [equivalence (#+ Equivalence)]
     [monad (#+ do)]]
    [control
     ["<>" parser
      ["." cli (#+ Parser)]]]
    [data
     ["." sum]
     ["." product]
     ["." text]]]]
  [//
   [repository
    [identity (#+ Identity)]]
   ["/" profile (#+ Name)]])

(type: .public Compilation
  (Variant
   #Build
   #Test))

(implementation: any_equivalence
  (Equivalence Any)

  (def: (= reference subject)
    true))

(def: compilation_equivalence
  (Equivalence Compilation)
  (sum.equivalence ..any_equivalence
                   ..any_equivalence))

(def: compilation
  (Parser Compilation)
  (<>.or (cli.this "build")
         (cli.this "test")))

(type: .public Command
  (Variant
   #Version
   #Clean
   #POM
   #Dependencies
   #Install
   (#Deploy Text Identity)
   (#Compilation Compilation)
   (#Auto Compilation)))

(def: .public equivalence
  (Equivalence Command)
  ($_ sum.equivalence
      ... #Version
      ..any_equivalence
      ... #Clean
      ..any_equivalence
      ... #POM
      ..any_equivalence
      ... #Dependencies
      ..any_equivalence
      ... #Install
      ..any_equivalence
      ... #Deploy
      ($_ product.equivalence
          text.equivalence
          text.equivalence
          text.equivalence)
      ... #Compilation
      ..compilation_equivalence
      ... #Auto
      ..compilation_equivalence))

(def: command'
  (Parser Command)
  ($_ <>.or
      (cli.this "version")
      (cli.this "clean")
      (cli.this "pom")
      (cli.this "deps")
      (cli.this "install")
      (<>.after (cli.this "deploy")
                (<>.and cli.any
                        (<>.and cli.any
                                cli.any)))
      ..compilation
      (<>.after (cli.this "auto")
                ..compilation)
      ))

(def: .public command
  (Parser [(List Name) Command])
  (<>.rec
   (function (_ command)
     ($_ <>.either
         (<>.after (cli.this "with")
                   (do <>.monad
                     [head cli.any
                      [tail command] command]
                     (in [(#.Item head tail) command])))
         (\ <>.monad each (|>> [(list /.default)])
            ..command')
         ))))