forked from cadence/breezewiki
292 lines
16 KiB
Racket
292 lines
16 KiB
Racket
#lang racket/base
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(require racket/file
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racket/list
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racket/runtime-path
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racket/string
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json
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(prefix-in easy: net/http-easy)
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html-parsing
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html-writing
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web-server/http
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web-server/http/bindings
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"config.rkt"
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"data.rkt"
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"extwiki-data.rkt"
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"extwiki-generic.rkt"
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"static-data.rkt"
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"../lib/syntax.rkt"
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"../lib/pure-utils.rkt"
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"../lib/xexpr-utils.rkt"
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"../lib/url-utils.rkt")
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(provide
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; headers to always send on all http responses
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always-headers
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; generates a consistent footer
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application-footer
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; generates a consistent template for wiki page content to sit in
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generate-wiki-page
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; generates a minimal but complete redirect to another page
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generate-redirect)
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(module+ test
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(require rackunit
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html-writing
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"test-utils.rkt"))
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(define always-headers
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(list (header #"Referrer-Policy" #"same-origin") ; header to not send referers to fandom
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(header #"Link" (string->bytes/latin-1 link-header))))
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(define-runtime-path path-static "../static")
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(define theme-icons
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(for/hasheq ([theme '(default light dark)])
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(values theme
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(html->xexp (file->string (build-path path-static (format "icon-theme-~a.svg" theme)) #:mode 'binary)))))
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(define (application-footer source-url #:license [license-in #f])
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(define license (or license-in license-default))
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`(footer (@ (class "custom-footer"))
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(div (@ (class ,(if source-url "custom-footer__cols" "internal-footer")))
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(div (p
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(img (@ (class "my-logo") (src ,(get-static-url "breezewiki.svg")))))
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(p
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(a (@ (href "https://gitdab.com/cadence/breezewiki"))
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,(format "~a source code" (config-get 'application_name))))
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(p
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(a (@ (href "https://docs.breezewiki.com"))
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"Documentation and more information"))
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(p
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(a (@ (href "https://lists.sr.ht/~cadence/breezewiki-discuss"))
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"Chat / Bug reports / Feature requests"))
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,(if (config-member? 'promotions::indie_wiki_buddy "footer")
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`(p
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(a (@ (href "https://getindie.wiki/"))
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"Get Indie Wiki Buddy browser extension - be redirected to BreezeWiki every time!"))
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"")
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,(if (config-true? 'instance_is_official)
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`(p ,(format "This instance is run by the ~a developer, " (config-get 'application_name))
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(a (@ (href "https://cadence.moe/contact"))
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"Cadence")
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". Proudly hosted by "
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(a (@ (href "http://alphamethyl.barr0w.net"))
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"Barrow Network Solutions" (sup "XD"))
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".")
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`(p
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,(format "This unofficial instance is based off the ~a source code, but is not controlled by the code developer." (config-get 'application_name)))))
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,(if source-url
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`(div (p "This page displays proxied content from "
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(a (@ (href ,source-url) (rel "nofollow noreferrer")) ,source-url)
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,(format ". Text content is available under the ~a license, " (license^-text license))
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(a (@ (href ,(license^-url license)) (rel "nofollow")) "see license info.")
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" Media files may have different copying restrictions.")
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(p ,(format "Fandom is a trademark of Fandom, Inc. ~a is not affiliated with Fandom." (config-get 'application_name))))
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`(div (p "Text content on wikis run by Fandom is available under the Creative Commons Attribution-Share Alike License 3.0 (Unported), "
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(a (@ (href "https://www.fandom.com/licensing") (rel "nofollow")) "see license info.")
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" Media files and official Fandom documents have different copying restrictions.")
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(p ,(format "Fandom is a trademark of Fandom, Inc. ~a is not affiliated with Fandom." (config-get 'application_name))))))))
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;; generate a notice with a link if a fandom wiki has a replacement as part of NIWA or similar
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;; if the wiki has no replacement, display nothing
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(define (extwiki-notice wikiname title)
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(define xt (findf (λ (item) (member wikiname (extwiki^-wikinames item))) extwikis))
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(cond/var
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[xt
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(let* ([group (hash-ref extwiki-groups (extwiki^-group xt))]
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[search-page (format "/Special:Search?~a"
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(params->query `(("search" . ,title)
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("go" . "Go"))))]
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[go (if (string-suffix? (extwiki^-home xt) "/")
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(regexp-replace #rx"/$" (extwiki^-home xt) (λ (_) search-page))
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(let* ([joiner (second (regexp-match #rx"/(w[^./]*)/" (extwiki^-home xt)))])
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(regexp-replace #rx"/w[^./]*/.*$" (extwiki^-home xt) (λ (_) (format "/~a~a" joiner search-page)))))]
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[props (extwiki-props^ go)])
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(cond
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[(eq? (extwiki^-banner xt) 'default)
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`(aside (@ (class "niwa__notice"))
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(h1 (@ (class "niwa__header")) ,(extwiki^-name xt) " has its own website separate from Fandom.")
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(a (@ (class "niwa__go") (href ,go)) "Read " ,title " on " ,(extwiki^-name xt) " →")
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(div (@ (class "niwa__cols"))
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(div (@ (class "niwa__left"))
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(p ,((extwiki-group^-description group) props))
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(p ,((extwiki^-description xt) props))
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(p "This wiki's core community has largely migrated away from Fandom. You should "
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(a (@ (href ,go)) "go to " ,(extwiki^-name xt) " now!"))
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(p (@ (class "niwa__feedback"))
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,@(add-between
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`(,@(for/list ([link (extwiki-group^-links group)])
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`(a (@ (href ,(cdr link))) ,(car link)))
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"This notice is from BreezeWiki"
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(a (@ (href "https://docs.breezewiki.com/Reporting_Bugs.html")) "Feedback?"))
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" / ")))
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(div (@ (class "niwa__right"))
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(img (@ (class "niwa__logo") (src ,(extwiki^-logo xt)))))))]
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[(eq? (extwiki^-banner xt) 'parallel)
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`(aside (@ (class "niwa__parallel"))
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(h1 (@ (class "niwa__header-mini"))
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"See also "
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(a (@ (href ,go)) ,(extwiki^-name xt)))
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(p "This topic has multiple communities of editors, some active on the Fandom wiki, others active on " ,(extwiki^-name xt) ".")
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(p "For thorough research, be sure to check both communities since they may have different information!")
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(p (@ (class "niwa__feedback"))
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,@(add-between
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`(,@(for/list ([link (extwiki-group^-links group)])
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`(a (@ (href ,(cdr link))) ,(car link)))
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"This notice is from BreezeWiki"
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(a (@ (href "https://docs.breezewiki.com/Reporting_Bugs.html")) "Feedback?"))
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" / ")))]
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[(eq? (extwiki^-banner xt) 'empty)
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`(aside (@ (class "niwa__notice niwa__notice--alt"))
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(h1 (@ (class "niwa__header")) "You will be redirected to " ,(extwiki^-name xt) ".")
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(p (@ (style "position: relative; top: -12px;")) "This independent wiki community has its own site separate from Fandom.")
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(a (@ (class "niwa__go") (href ,go)) "Take me there! →")
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(p (@ (class "niwa__feedback") (style "text-align: left"))
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,@(add-between
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`(,@(for/list ([link (extwiki-group^-links group)])
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`(a (@ (href ,(cdr link))) ,(car link)))
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"This notice is from BreezeWiki")
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" / ")))]))]
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(var fetched-callback (get-redirect-content wikiname))
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[fetched-callback
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(fetched-callback title)]
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[#t ""]))
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(define (generate-wiki-page
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content
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#:req req
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#:source-url source-url
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#:wikiname wikiname
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#:title title
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#:head-data [head-data-in #f]
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#:siteinfo [siteinfo-in #f]
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#:user-cookies [user-cookies-in #f]
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#:online-styles [online-styles #t])
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(define siteinfo (or siteinfo-in siteinfo-default))
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(define head-data (or head-data-in ((head-data-getter wikiname))))
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(define user-cookies (or user-cookies-in (user-cookies-getter req)))
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(define origin (format "https://~a.fandom.com" wikiname))
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(define required-styles
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(cond
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[online-styles
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(define styles
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(list
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(format "~a/wikia.php?controller=ThemeApi&method=themeVariables&variant=~a" origin (user-cookies^-theme user-cookies))
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(format "~a/load.php?lang=en&modules=site.styles%7Cskin.fandomdesktop.styles%7Cext.fandom.PortableInfoboxFandomDesktop.css%7Cext.fandom.GlobalComponents.CommunityHeaderBackground.css%7Cext.gadget.site-styles%2Csound-styles&only=styles&skin=fandomdesktop" origin)))
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(if (config-true? 'strict_proxy)
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(map u-proxy-url styles)
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styles)]
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[#t
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(list
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(format "/archive/~a/styles/themeVariables-~a.css" wikiname (user-cookies^-theme user-cookies))
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(format "/archive/~a/styles/site.css" wikiname))]))
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`(*TOP*
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(*DECL* DOCTYPE html)
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(html
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(head
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(meta (@ (name "viewport") (content "width=device-width, initial-scale=1")))
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(title ,(format "~a | ~a+~a"
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title
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(regexp-replace #rx" ?Wiki$" (siteinfo^-sitename siteinfo) "")
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(config-get 'application_name)))
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,@(map (λ (url)
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`(link (@ (rel "stylesheet") (type "text/css") (href ,url))))
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required-styles)
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(link (@ (rel "stylesheet") (type "text/css") (href ,(get-static-url "main.css"))))
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(script "const BWData = "
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,(jsexpr->string (hasheq 'wikiname wikiname
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'strict_proxy (config-true? 'strict_proxy))))
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,(if (config-true? 'feature_search_suggestions)
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`(script (@ (type "module") (src ,(get-static-url "search-suggestions.js"))))
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"")
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(script (@ (type "module") (src ,(get-static-url "countdown.js"))))
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(link (@ (rel "icon") (href ,(u (λ (v) (config-true? 'strict_proxy))
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(λ (v) (u-proxy-url v))
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(head-data^-icon-url head-data))))))
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(body (@ (class ,(head-data^-body-class head-data)))
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,(let ([extension-eligible?
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(cond/var
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[(not req) #f]
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[(not (config-member? 'promotions::indie_wiki_buddy "banner")) #f]
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(var ua-pair (assq 'user-agent (request-headers req)))
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[(not ua-pair) #f]
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(var ua (string-downcase (cdr ua-pair)))
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;; everyone pretends to be chrome, so we do it in reverse
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;; this excludes common browsers that don't support the extension
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[#t (and (not (string-contains? ua "edge/"))
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(not (string-contains? ua "mobile")))])])
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(if extension-eligible?
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`(div (@ (class "bw-top-banner"))
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(div (@ (class "bw-top-banner-rainbow"))
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"Try " (a (@ (href "https://getindie.wiki/") (target "_blank")) "our affiliated browser extension") " - redirect to BreezeWiki automatically!\n"))
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""))
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(div (@ (class "main-container"))
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(div (@ (class "fandom-community-header__background tileHorizontally header")))
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(div (@ (class "page"))
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(main (@ (class "page__main"))
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,(extwiki-notice wikiname title)
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(div (@ (class "custom-top"))
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(h1 (@ (class "page-title")) ,title)
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(nav (@ (class "sitesearch"))
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(form (@ (action ,(format "/~a/search" wikiname))
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(class "bw-search-form")
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(id "bw-pr-search-form"))
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(label (@ (for "bw-search-input")) "Search ")
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(div (@ (id "bw-pr-search-input"))
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(input (@ (type "text") (name "q") (id "bw-search-input") (autocomplete "off"))))
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(div (@ (class "bw-ss__container") (id "bw-pr-search-suggestions"))))
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(div (@ (class "bw-theme__select"))
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(span (@ (class "bw-theme__main-label")) "Page theme")
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(span (@ (class "bw-theme__items"))
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,@(for/list ([theme '(default light dark)])
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(define class
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(if (equal? theme (user-cookies^-theme user-cookies))
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"bw-theme__item bw-theme__item--selected"
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"bw-theme__item"))
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`(a (@ (rel "nofollow")
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(href ,(user-cookies-setter-url
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req
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(struct-copy user-cookies^ user-cookies
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[theme theme]))) (class ,class))
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(span (@ (class "bw-theme__icon-container"))
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,(hash-ref theme-icons theme))
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,(format "~a" theme)))))))
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(div (@ (id "content") #;(class "page-content"))
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(div (@ (id "mw-content-text"))
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,content))
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,(application-footer source-url #:license (siteinfo^-license siteinfo)))))))))
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(module+ test
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(define page
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(parameterize ([(config-parameter 'strict_proxy) "true"])
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(generate-wiki-page
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'(template)
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#:req test-req
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#:source-url ""
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#:title "test"
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#:wikiname "test")))
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; check the page is a valid xexp
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(check-not-false (xexp->html page))
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; check the stylesheet is proxied
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(check-true (string-prefix?
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(get-attribute 'href
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(bits->attributes
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((query-selector
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(λ (t a c) (eq? t 'link))
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page))))
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"/proxy?dest=https%3A%2F%2Ftest.fandom.com")))
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(define (generate-redirect dest #:headers [headers-in '()])
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(define dest-bytes (string->bytes/utf-8 dest))
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(response/output
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#:code 302
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#:headers (append (list (header #"Location" dest-bytes)) headers-in)
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(λ (out)
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(write-html
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`(html
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(head
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(title "Redirecting..."))
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(body
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"Redirecting to "
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(a (@ (href ,dest)) ,dest)
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"..."))
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out))))
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