breezewiki/src/page-category.rkt

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#lang racket/base
(require racket/dict
racket/list
racket/string
(prefix-in easy: net/http-easy)
; html libs
html-writing
; web server libs
net/url
web-server/http
(only-in web-server/dispatchers/dispatch next-dispatcher)
#;(only-in web-server/http/redirect redirect-to)
"config.rkt"
"application-globals.rkt"
"url-utils.rkt"
"xexpr-utils.rkt")
(provide
page-category)
(module+ test
(require rackunit)
(define category-json-data
'#hasheq((batchcomplete . #t) (continue . #hasheq((cmcontinue . "page|4150504c45|41473") (continue . "-||"))) (query . #hasheq((categorymembers . (#hasheq((ns . 0) (pageid . 25049) (title . "Item (entity)")) #hasheq((ns . 0) (pageid . 128911) (title . "3D")) #hasheq((ns . 0) (pageid . 124018) (title . "A Very Fine Item")) #hasheq((ns . 0) (pageid . 142208) (title . "Amethyst Shard")) #hasheq((ns . 0) (pageid . 121612) (title . "Ankle Monitor")))))))))
(define (generate-results-page dest-url wikiname prefixed-category data)
(define members (jp "/query/categorymembers" data))
(generate-wiki-page
dest-url
wikiname
prefixed-category
`(div (@ (class "mw-parser-output"))
(ul (@ (class "my-category-list"))
,@(map
(λ (result)
(define title (jp "/title" result))
(define page-path (regexp-replace* #rx" " title "_"))
`(li
(a (@ (href ,(format "/~a/wiki/~a" wikiname page-path)))
,title)))
members)))))
(define (page-category req)
(response-handler
(define wikiname (path/param-path (first (url-path (request-uri req)))))
(define prefixed-category (path/param-path (caddr (url-path (request-uri req)))))
(define origin (format "https://~a.fandom.com" wikiname))
(define dest-url (format "~a/api.php?~a"
origin
(params->query `(("action" . "query")
("list" . "categorymembers")
("cmtitle" . ,prefixed-category)
("cmlimit" . "max")
("formatversion" . "2")
("format" . "json")))))
(printf "out: ~a~n" dest-url)
(define dest-res (easy:get dest-url #:timeouts timeouts))
(define data (easy:response-json dest-res))
(define body (generate-results-page dest-url wikiname prefixed-category data))
(when (config-get 'debug)
; used for its side effects
; convert to string with error checking, error will be raised if xexp is invalid
(xexp->html body))
(response/output
#:code 200
(λ (out)
(write-html body out)))))
(module+ test
(check-not-false ((query-selector (attribute-selector 'href "/test/wiki/Ankle_Monitor")
(generate-results-page "" "test" "Category:Items" category-json-data)))))