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#lang racket/base
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(require racket/list
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racket/match
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web-server/http/request-structs
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net/url-string
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(only-in net/cookies/server cookie-header->alist cookie->set-cookie-header make-cookie)
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(prefix-in easy: net/http-easy)
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memo
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"static-data.rkt"
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"url-utils.rkt"
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"xexpr-utils.rkt")
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(provide
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(struct-out siteinfo^)
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(struct-out license^)
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(struct-out head-data^)
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(struct-out user-cookies^)
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siteinfo-fetch
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siteinfo-default
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license-default
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head-data-getter
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head-data-default
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user-cookies-getter
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user-cookies-default
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user-cookies-setter
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user-cookies-setter-url)
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(struct siteinfo^ (sitename basepage license) #:transparent)
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(struct license^ (text url) #:transparent)
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(struct head-data^ (body-class icon-url) #:transparent)
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(define license-default (license^ "CC-BY-SA" "https://www.fandom.com/licensing"))
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(define siteinfo-default (siteinfo^ "Test Wiki" "Main_Page" license-default))
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(define head-data-default (head-data^ "skin-fandomdesktop" (get-static-url "breezewiki-favicon.svg")))
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(define/memoize (siteinfo-fetch wikiname) #:hash hash
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(define dest-url
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(format "https://~a.fandom.com/api.php?~a"
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wikiname
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(params->query '(("action" . "query")
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("meta" . "siteinfo")
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("siprop" . "general|rightsinfo")
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("format" . "json")
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("formatversion" . "2")))))
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(log-outgoing dest-url)
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(define res (easy:get dest-url))
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(define data (easy:response-json res))
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(siteinfo^ (jp "/query/general/sitename" data)
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(second (regexp-match #rx"/wiki/(.*)" (jp "/query/general/base" data)))
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(license^ (jp "/query/rightsinfo/text" data)
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(jp "/query/rightsinfo/url" data))))
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(define/memoize (head-data-getter wikiname) #:hash hash
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;; data will be stored here, can be referenced by the memoized closure
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(define this-data head-data-default)
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;; returns the getter
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(λ ([res-in #f])
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(when res-in
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;; when actual information is provided, parse it into the struct and store it for the future
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(define head-html (jp "/parse/headhtml" res-in ""))
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(define data
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(head-data^
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(match (regexp-match #rx"<body [^>]*class=\"([^\"]*)" head-html)
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[(list _ classes) classes]
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[_ (head-data^-body-class head-data-default)])
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(match (regexp-match #rx"<link rel=\"(?:shortcut )?icon\" href=\"([^\"]*)" head-html)
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[(list _ icon-url) icon-url]
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[_ (head-data^-icon-url head-data-default)])))
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(set! this-data data))
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;; then no matter what, return the best information we have so far
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this-data))
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(struct user-cookies^ (theme) #:prefab)
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(define user-cookies-default (user-cookies^ 'default))
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(define (user-cookies-getter req)
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(define cookie-header (headers-assq* #"cookie" (request-headers/raw req)))
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(define cookies-alist (if cookie-header (cookie-header->alist (header-value cookie-header) bytes->string/utf-8) null))
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(define cookies-hash
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(for/hasheq ([pair cookies-alist])
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(match pair
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[(cons "theme" (and theme (or "light" "dark" "default")))
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(values 'theme (string->symbol theme))]
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[_ (values #f #f)])))
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(user-cookies^
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(hash-ref cookies-hash 'theme (user-cookies^-theme user-cookies-default))))
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(define (user-cookies-setter user-cookies)
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(map (λ (c) (header #"Set-Cookie" (cookie->set-cookie-header c)))
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(list (make-cookie "theme" (symbol->string (user-cookies^-theme user-cookies))
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#:path "/"
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#:max-age (* 60 60 24 365 10)))))
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(define (user-cookies-setter-url req new-settings)
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(format "/set-user-settings?~a" (params->query `(("next_location" . ,(url->string (request-uri req)))
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("new_settings" . ,(format "~a" new-settings))))))
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