Match original light/dark page theme reliably

- Use keyword parameters for generate-wiki-page
- Apply body classes (including page theme) from original source

src/application-globals.rkt

@@ -55,7 +55,15 @@
                               " 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))))))))
 
-(define (generate-wiki-page source-url wikiname title content)
+(define (generate-wiki-page
+         content
+         #:source-url source-url
+         #:wikiname wikiname
+         #:title title
+         #:body-class [body-class-in ""])
+  (define body-class (if (equal? "" body-class-in)
+                         "skin-fandomdesktop"
+                         body-class-in))
   (define (required-styles origin)
     (map (λ (dest-path)
            (define url (format dest-path origin))
@@ -76,7 +84,7 @@
               `(link (@ (rel "stylesheet") (type "text/css") (href ,url))))
             (required-styles (format "https://~a.fandom.com" wikiname)))
      (link (@ (rel "stylesheet") (type "text/css") (href "/static/main.css"))))
-    (body (@ (class "skin-fandomdesktop theme-fandomdesktop-light"))
+    (body (@ (class ,body-class))
           (div (@ (class "main-container"))
                (div (@ (class "fandom-community-header__background tileHorizontally header")))
                (div (@ (class "page"))
@@ -94,7 +102,11 @@
 (module+ test
   (define page
     (parameterize ([(config-parameter 'strict_proxy) "true"])
-      (generate-wiki-page "" "test" "test" '(template))))
+      (generate-wiki-page
+       '(template)
+       #:source-url ""
+       #:title "test"
+       #:wikiname "test")))
   ; check the page is a valid xexp
   (check-not-false (xexp->html page))
   ; check the stylesheet is proxied

src/dispatcher-tree.rkt

@@ -12,9 +12,7 @@
 
 (provide
  ; syntax to make the hashmap from names
- dispatcher-tree
+ dispatcher-tree)
- ; procedure to make the tree from the hashmap
- make-dispatcher-tree)
 
 ; make a hashmap out of the provided names and call make-dispatcher-tree with it
 (define-syntax (dispatcher-tree stx)

src/page-category.rkt

@@ -1,6 +1,7 @@
 #lang racket/base
 (require racket/dict
          racket/list
+         racket/match
          racket/string
          (prefix-in easy: net/http-easy)
          ; html libs
@@ -26,12 +27,19 @@
   (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 members-data page)
+(define (generate-results-page
+         #:source-url source-url
+         #:wikiname wikiname
+         #:prefixed-category prefixed-category
+         #:members-data members-data
+         #:page page
+         #:body-class body-class)
   (define members (jp "/query/categorymembers" members-data))
   (generate-wiki-page
-   dest-url
+   #:source-url source-url
-   wikiname
+   #:wikiname wikiname
-   prefixed-category
+   #:title prefixed-category
+   #:body-class body-class
    `(div
      ,(update-tree-wiki page wikiname)
      (hr)
@@ -55,7 +63,8 @@
    (define source-url (format "~a/wiki/~a" origin prefixed-category))
 
    (thread-let
-    ([members-data (define dest-url (format "~a/api.php?~a"
+    ([members-data (define dest-url
+                     (format "~a/api.php?~a"
                              origin
                              (params->query `(("action" . "query")
                                               ("list" . "categorymembers")
@@ -66,11 +75,12 @@
                    (printf "out: ~a~n" dest-url)
                    (define dest-res (easy:get dest-url #:timeouts timeouts))
                    (easy:response-json dest-res)]
-     [page-data (define dest-url (format "~a/api.php?~a"
+     [page-data (define dest-url
+                  (format "~a/api.php?~a"
                           origin
                           (params->query `(("action" . "parse")
                                            ("page" . ,prefixed-category)
-                                                     ("prop" . "text")
+                                           ("prop" . "text|headhtml|langlinks")
                                            ("formatversion" . "2")
                                            ("format" . "json")))))
                 (printf "out: ~a~n" dest-url)
@@ -79,7 +89,19 @@
 
     (define page-html (preprocess-html-wiki (jp "/parse/text" page-data "")))
     (define page (html->xexp page-html))
-    (define body (generate-results-page source-url wikiname prefixed-category members-data page))
+    (define head-html (jp "/parse/headhtml" page-data ""))
+    (define body-class (match (regexp-match #rx"<body [^>]*class=\"([^\"]*)" head-html)
+                         [(list _ classes) classes]
+                         [_ ""]))
+    (println head-html)
+    (println body-class)
+    (define body (generate-results-page
+                  #:source-url source-url
+                  #:wikiname wikiname
+                  #:prefixed-category prefixed-category
+                  #:members-data members-data
+                  #:page page
+                  #:body-class body-class))
 
     (when (config-true? 'debug)
       ; used for its side effects
@@ -91,5 +113,9 @@
        (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
+                                    (generate-results-page
-                                                           '(div "page text"))))))
+                                     #:source-url ""
+                                     #:wikiname "test"
+                                     #:prefixed-category "Category:Items"
+                                     #:category-data category-json-data
+                                     #:page '(div "page text"))))))

src/page-search.rkt

@@ -26,9 +26,9 @@
 (define (generate-results-page dest-url wikiname query data)
   (define search-results (jp "/query/search" data))
   (generate-wiki-page
-   dest-url
+   #:source-url dest-url
-   wikiname
+   #:wikiname wikiname
-   "Search Results"
+   #:title "Search Results"
    `(div (@ (class "mw-parser-output"))
          (p ,(format "~a results found for " (length search-results))
             (strong ,query))

src/page-wiki.rkt

@@ -2,6 +2,7 @@
 (require racket/dict
          racket/function
          racket/list
+         racket/match
          racket/string
          ; libs
          (prefix-in easy: net/http-easy)
@@ -238,7 +239,7 @@
                            origin
                            (params->query `(("action" . "parse")
                                             ("page" . ,path)
-                                            ("prop" . "text")
+                                            ("prop" . "text|headhtml|langlinks")
                                             ("formatversion" . "2")
                                             ("format" . "json")))))
   (printf "out: ~a~n" dest-url)
@@ -250,12 +251,21 @@
             [title (jp "/parse/title" data "")]
             [page-html (jp "/parse/text" data "")]
             [page-html (preprocess-html-wiki page-html)]
-            [page (html->xexp page-html)])
+            [page (html->xexp page-html)]
+            [head-html (jp "/parse/headhtml" data "")]
+            [body-class (match (regexp-match #rx"<body [^>]*class=\"([^\"]*)" head-html)
+                          [(list _ classes) classes]
+                          [_ ""])])
        (if (equal? "missingtitle" (jp "/error/code" data #f))
            (next-dispatcher)
            (response-handler
             (define body
-              (generate-wiki-page source-url wikiname title (update-tree-wiki page wikiname)))
+              (generate-wiki-page
+               (update-tree-wiki page wikiname)
+               #:source-url source-url
+               #:wikiname wikiname
+               #:title title
+               #:body-class body-class))
             (define redirect-msg ((query-selector (attribute-selector 'class "redirectMsg") body)))
             (define headers (if redirect-msg
                                 (let* ([dest (get-attribute 'href (bits->attributes ((query-selector (λ (t a c) (eq? t 'a)) redirect-msg))))]