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(ns mulk.benki.wiki
(:refer-clojure :exclude [distinct conj! case compile drop take sort disj!
resultset-seq])
(:use [clojure repl pprint]
[hiccup core page]
[mulk.benki util db]
[clojure.core.match
:only [match]]
[clojureql core predicates]
[hiccup.util
:only [escape-html]]
noir.core)
(:require [noir.session :as session]
[noir.response :as response]
[clojure.java.jdbc :as sql])
(:import [org.jsoup.Jsoup]))
(def page_revisions (table :wiki_page_revisions))
(def pages (table :wiki_pages))
(defn- tagsoup-map-text [fun tag-soup]
(let [doc (org.jsoup.Jsoup/parse tag-soup) ]
(doseq [node (into [] (.select doc ":not(a):not(a *)"))
;; XPath: //*[not(ancestor-or-self::a)]
subnode (into [] (.childNodes node))]
(when (instance? org.jsoup.nodes.TextNode subnode)
(let [new-node (org.jsoup.nodes.Element.
(org.jsoup.parser.Tag/valueOf "span")
"")]
(.html new-node (fun (.text subnode)))
(.replaceWith subnode new-node)
(.unwrap new-node))))
(-> doc (.select "body") (.html))))
(defn- html-insert-wikilinks [text]
(clojure.string/replace
text
#"\p{javaUpperCase}+\p{javaLowerCase}+\p{javaUpperCase}+\p{javaLowerCase}+\w+"
(fn [x] (fmt nil "<a href=\"~a\" class=\"benkilink\">~a</a>" (link :wiki x) x))))
(defn- html-insert-hyperlinks [text]
(clojure.string/replace
text
;; Regex taken from:
;; http://www.codinghorror.com/blog/2008/10/the-problem-with-urls.html
#"\(?\bhttps?://[-A-Za-z0-9+&@#/%?=~_()|!:,.;]*[-A-Za-z0-9+&@#/%=~_()|]"
(fn [x]
(let [parens? (and (.startsWith x "(") (.endsWith x ")"))
uri (if parens?
(subs x 1 (- (count x) 1))
x)]
(fmt nil "~a<a href=\"~a\" class=\"benkiautohref\">~a</a>~a"
(if parens? "(" "")
uri
uri
(if parens? ")" ""))))))
(defn- wikilinkify [tag-soup]
(tagsoup-map-text html-insert-wikilinks tag-soup))
(defn- hrefify [tag-soup]
(tagsoup-map-text html-insert-hyperlinks tag-soup))
(defn- unwikilinkify [tag-soup]
(let [doc (org.jsoup.Jsoup/parse tag-soup)]
(doseq [node (-> doc (.select ".benkilink") (.unwrap))])
(-> doc (.select "body") (.html))))
(defn- unhrefify [tag-soup]
(let [doc (org.jsoup.Jsoup/parse tag-soup)]
(doseq [node (-> doc (.select ".benkiautohref") (.unwrap))])
(-> doc (.select "body") (.html))))
(def ^{:private true} wiki-page
{:head
;; Aloha Editor
(list
[:link {:rel "stylesheet"
:href (resolve-uri "/3rdparty/alohaeditor/aloha/css/aloha.css")}])
:bottom
(list
[:script {:type "text/javascript"
:src (resolve-uri "/3rdparty/alohaeditor/aloha/lib/aloha.js")
:data-aloha-plugins "common/format,common/highlighteditables,common/list,common/link,common/undo,common/paste,common/block,common/table"}]
;; Custom wiki page stuff
[:script {:type "text/javascript"
:src (resolve-uri "/js/wiki.js")}])})
(def ^{:private true} plain-page
{})
(defpage "/wiki" []
;; NB. response/redirect calls options/resolve-uri.
(response/redirect "/wiki/HomePage"))
(defpage "/wiki/:title" {title :title, revision-id :revision}
(with-auth
(let [revisions-with-title (-> page_revisions
(select (where (=* :title title)))
(sort [:date#desc]))
revision (if revision-id
(with-dbt (first @(select page_revisions
(where (=* :id (Integer/parseInt revision-id))))))
(with-dbt (first @revisions-with-title)))]
(layout wiki-page
(fmt nil "~A — Benki~@[/~A~] " title revision-id)
(if revision
[:div#wiki-page-content (wikilinkify (hrefify (:content revision)))]
[:div#wiki-page-content [:p "This page does not exist yet."]])
[:hr]
[:div#wiki-page-footer {:style "text-align: right"}
[:a {:href (link :wiki title "/revisions")} "Page revisions"]]))))
(defpage "/wiki/:title/revisions" {title :title}
(with-auth
(let [revisions (with-dbt
(query "SELECT r.*, u.first_name
FROM wiki_page_revisions r
JOIN (SELECT * FROM wiki_page_revisions
WHERE title = ?
ORDER BY date DESC
LIMIT 1) pr
ON (pr.page = r.page)
JOIN users u
ON u.id = r.author
ORDER BY date DESC"
title))]
(with-dbt
(layout plain-page
(fmt nil "Revision list — ~A — Benki" title)
[:table {:style ""}
[:thead
[:th "Date"]
[:th "Title"]
[:th "Author"]]
[:tbody
(for [rev revisions]
[:tr
[:td [:a {:href (link :wiki
(:title rev)
(fmt nil "?revision=~a" (:id rev)))}
(escape-html (format-date (:date rev)))]]
[:td (:title rev)]
[:td (:first_name rev)]])]])))))
(defn insert-empty-page []
(sql/with-query-results results ["INSERT INTO wiki_pages DEFAULT VALUES RETURNING *"]
(first (into () results))))
(defpage [:post "/wiki/:title"] {title :title, content :content}
(with-dbt
(let [revisions (-> page_revisions
(select (where (=* :title title)))
(sort [:date#desc]))
revision (first @revisions)
page (:page revision)
dbcontent (unhrefify (unwikilinkify content))]
(if-let [user (Integer. (session/get :user))]
(let [page-id (if page page (:id (insert-empty-page)))]
(when-not (= (:content revision) dbcontent) ;skip if content unmodified
(sql/insert-values
:wiki_page_revisions
[:page :title :content :author :format]
[page-id title dbcontent user "html5"]))
{:status 200, :headers {}, :body (wikilinkify (hrefify dbcontent))})
{:status 403, :headers {}, :body ""}))))
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