Add support for File: pages

Fixes https://lists.sr.ht/~cadence/breezewiki-discuss/%3Cb2835a70-5118-4df0-90c9-4333486a4b69%40nixnetmail.com%3E

src/dispatcher-tree.rkt

@@ -45,6 +45,7 @@
               (pathprocedure:make "/proxy" (hash-ref ds 'page-proxy))
               (pathprocedure:make "/search" (hash-ref ds 'page-global-search))
               (filter:make (pregexp (format "^/~a/wiki/Category:.+$" px-wikiname)) (lift:make (hash-ref ds 'page-category)))
+              (filter:make (pregexp (format "^/~a/wiki/File:.+$" px-wikiname)) (lift:make (hash-ref ds 'page-file)))
               (filter:make (pregexp (format "^/~a/wiki/.+$" px-wikiname)) (lift:make (hash-ref ds 'page-wiki)))
               (filter:make (pregexp (format "^/~a/search$" px-wikiname)) (lift:make (hash-ref ds 'page-search)))
               (filter:make (pregexp (format "^/~a(/(wiki(/)?)?)?$" px-wikiname)) (lift:make (hash-ref ds 'redirect-wiki-home)))

src/page-file.rkt

@@ -0,0 +1,117 @@
+#lang racket/base
+(require racket/dict
+         racket/list
+         racket/match
+         racket/string
+         (prefix-in easy: net/http-easy)
+         ; html libs
+         html-parsing
+         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)
+         "application-globals.rkt"
+         "config.rkt"
+         "data.rkt"
+         "page-wiki.rkt"
+         "syntax.rkt"
+         "url-utils.rkt"
+         "xexpr-utils.rkt")
+
+(provide
+ page-file)
+
+;(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
+         #:source-url source-url
+         #:wikiname wikiname
+         #:title title
+         #:media-detail media-detail
+         #:license [license #f])
+  (define video-embed-code (jp "/videoEmbedCode" media-detail ""))
+  (define raw-image-url (jp "/rawImageUrl" media-detail))
+  (define image-url (jp "/imageUrl" media-detail raw-image-url))
+  (define username (jp "/userName" media-detail))
+  (define user-page-url (jp "/userPageUrl" media-detail))
+  (define is-posted-in (jp "/isPostedIn" media-detail #f))
+  (define smaller-article-list (jp "/smallerArticleList" media-detail))
+  (define article-list-is-smaller (jp "/articleListIsSmaller" media-detail))
+  (define image-description (jp "/imageDescription" media-detail #f))
+  (generate-wiki-page
+   #:source-url source-url
+   #:wikiname wikiname
+   #:title title
+   #:license license
+   `(div
+     (p
+       ,(if (non-empty-string? video-embed-code)
+           `(span (a (@ (href (u-proxy-url raw-image-url))) "View original file") ". ")
+           `(return-no-element))
+       "Added by "
+       (a (@ (href (u-proxy-url user-page-url))) username)
+       "."
+       ,(if is-posted-in
+           `(span " Posted in "
+              ,@(map
+                 (λ (article)
+                   (define page-path (jp "/title" result))
+                   (define title (jp "/titleText" result page-path))
+                   `(a (@ (href ,(format "/~a/wiki/~a" wikiname page-path)))
+                        ,title))
+                 smaller-article-list))
+              ,(if (= article-list-is-smaller 1)
+                  "…"
+                  "."))))
+;     ,(update-tree-wiki image-description wikiname)
+    ))
+
+(define (page-file req)
+  (response-handler
+   (define wikiname (path/param-path (first (url-path (request-uri req)))))
+   (define prefixed-title (path/param-path (caddr (url-path (request-uri req)))))
+   (define origin (format "https://~a.fandom.com" wikiname))
+   (define source-url (format "~a/wiki/~a" origin prefixed-title))
+
+   (thread-let
+    ([media-detail (define dest-url
+                     (format "~a/wikia.php?~a"
+                             origin
+                             (params->query `(("format" . "json")
+                                              ("controller" . "Lightbox")
+                                              ("method" . "getMediaDetail")
+                                              ("fileTitle" . prefixed-title)))))
+                   (log-outgoing dest-url)
+                   (define dest-res (easy:get dest-url #:timeouts timeouts))
+                   (easy:response-json dest-res)]
+     [license (license-auto wikiname)])
+
+    (define title (jp "/fileTitle" page-data media-detail)))
+    (define body (generate-results-page
+                  #:source-url source-url
+                  #:wikiname wikiname
+                  #:title title
+                  #:media-detail media-detail
+                  #:license license))
+
+    (when (config-true? '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
+;                                     #:source-url ""
+;                                     #:wikiname "test"
+;                                     #:title "Category:Items"
+;                                     #:members-data category-json-data
+;                                     #:page '(div "page text"))))))