breezewiki/src/application-globals.rkt

295 lines
16 KiB
Racket

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