(.module:
  [library
   [lux {"-" [Name]}
    [abstract
     [equivalence {"+" [Equivalence]}]
     [monad {"+" [do]}]]
    [control
     ["<>" parser
      ["[0]" cli {"+" [Parser]}]]]
    [data
     ["[0]" sum]
     ["[0]" product]
     ["[0]" 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')
         ))))