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(.module:
  [lux #*
   ["." ffi (#+ import:)]
   [abstract
    [equivalence (#+ Equivalence)]]
   [data
    ["." product]
    ["." text
     ["%" format (#+ format)]
     [encoding
      ["." utf8]]]]])

(type: #export User
  Text)

(type: #export Password
  Text)

(type: #export Identity
  {#user User
   #password Password})

(def: #export equivalence
  (Equivalence Identity)
  ($_ product.equivalence
      text.equivalence
      text.equivalence
      ))

(import: java/util/Base64$Encoder
  ["#::."
   (encodeToString [[byte]] java/lang/String)])

(import: java/util/Base64
  ["#::."
   (#static getEncoder [] java/util/Base64$Encoder)])

(def: #export (basic_auth user password)
  (-> User Password Text)
  (let [credentials (\ utf8.codec encode (format user ":" password))]
    (|> (java/util/Base64::getEncoder)
        (java/util/Base64$Encoder::encodeToString credentials)
        (format "Basic "))))