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(.module:
[library
[lux #*
[control
[monad (#+ do)]
["." try (#+ Try)]
["p" parser ("#\." monad)
["l" text (#+ Parser)]]]
[data
[number
["i" int]]
[text
["%" format (#+ format)]]
[format
["." context (#+ Context)]]
[collection
["." dictionary]]]
[time
["." duration (#+ Duration)]]]]
["." // (#+ Header)
["." header]])
(type: .public Directive
(-> Text Text))
(def: (directive extension)
(-> Text Directive)
(function (_ so_far)
(format so_far "; " extension)))
(def: .public (set name value)
(-> Text Text Header)
(header.add "Set-Cookie" (format name "=" value)))
(def: .public (max_age duration)
(-> Duration Directive)
(let [seconds (duration.query duration.second duration)]
(..directive (format "Max-Age=" (if (i.< +0 seconds)
(%.int seconds)
(%.nat (.nat seconds)))))))
(template [<name> <prefix>]
[(def: .public (<name> value)
(-> Text Directive)
(..directive (format <prefix> "=" value)))]
[domain "Domain"]
[path "Path"]
)
(template [<name> <tag>]
[(def: .public <name>
Directive
(..directive <tag>))]
[secure "Secure"]
[http_only "HttpOnly"]
)
(type: .public CSRF_Policy
#Strict
#Lax)
(def: .public (same_site policy)
(-> CSRF_Policy Directive)
(..directive (format "SameSite=" (case policy
#Strict "Strict"
#Lax "Lax"))))
(def: (cookie context)
(-> Context (Parser Context))
(do p.monad
[key (l.slice (l.many! (l.none_of! "=")))
_ (l.this "=")
value (l.slice (l.many! (l.none_of! ";")))]
(in (dictionary.put key value context))))
(def: (cookies context)
(-> Context (Parser Context))
($_ p.either
(do p.monad
[context' (..cookie context)
_ (l.this "; ")]
(cookies context'))
(p\in context)))
(def: .public (get header)
(-> Text (Try Context))
(l.run header (..cookies context.empty)))
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