From fcfa03b3d85a7b127c7f4dbb9bdd2112cadd9a53 Mon Sep 17 00:00:00 2001
From: shish <shish@7f39781d-f577-437e-ae19-be835c7a54ca>
Date: Wed, 23 May 2007 22:53:35 +0000
Subject: [PATCH] Wiki works on a basic level, lacks many handy features
 though...

git-svn-id: file:///home/shish/svn/shimmie2/trunk@130 7f39781d-f577-437e-ae19-be835c7a54ca
---
 contrib/wiki/main.php | 173 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 173 insertions(+)
 create mode 100644 contrib/wiki/main.php

diff --git a/contrib/wiki/main.php b/contrib/wiki/main.php
new file mode 100644
index 00000000..d4540ab7
--- /dev/null
+++ b/contrib/wiki/main.php
@@ -0,0 +1,173 @@
+<?php
+/**
+ * Name: Simple Wiki
+ * Author: Shish <webmaster@shishnet.org>
+ * Link: http://trac.shishnet.org/shimmie2/
+ * License: GPLv2
+ * Description: A simple wiki, for those who don't want the
+ *              hugeness of mediawiki
+ */
+
+// WikiUpdateEvent {{{
+class WikiUpdateEvent extends Event {
+	var $user;
+	var $page;
+
+	public function WikiUpdateEvent($user, $page) {
+		$this->user = $user;
+		$this->page = $page;
+	}
+}
+// }}}
+
+class WikiPage { // {{{
+	var $id;
+	var $owner_id;
+	var $owner_ip;
+	var $date;
+	var $title;
+	var $revision;
+	var $body;
+	
+	public function WikiPage($row=null) {
+		if(!is_null($row)) {
+			$this->id = $row['id'];
+			$this->owner_id = $row['owner_id'];
+			$this->owner_ip = $row['owner_ip'];
+			$this->date = $row['date'];
+			$this->title = $row['title'];
+			$this->revision = $row['revision'];
+			$this->body = $row['body'];
+		}
+	}
+
+	public function get_owner() {
+		global $database;
+		return $database->get_user_by_id($this->owner_id);
+	}
+} // }}}
+
+class Wiki extends Extension {
+// event handler {{{
+	public function receive_event($event) {
+		if(is_a($event, 'InitExtEvent')) {
+			global $config;
+			if($config->get_int("ext_wiki_version") < 1) {
+				$this->install();
+			}
+		}
+
+		if(is_a($event, 'PageRequestEvent') && ($event->page == "wiki")) {
+			global $page;
+
+			$page->add_side_block(new NavBlock());
+
+			if(is_null($event->get_arg(0)) || strlen(trim($event->get_arg(0))) == 0) {
+				$title = "Index";
+			}
+			else {
+				$title = $event->get_arg(0);
+			}
+			
+			$page->set_title(html_escape($title));
+			$page->set_heading(html_escape($title));
+
+			$content = $this->get_page($title);
+			if(isset($_GET['save']) && $_GET['save'] == "on") {
+				$title = $_POST['title'];
+				$rev = $_POST['revision'];
+				$body = $_POST['body'];
+				
+				$this->set_page($title, $rev, $body);
+
+				$u_title = url_escape($title);
+
+				global $page;
+				$page->set_mode("redirect");
+				$page->set_redirect(make_link("wiki/$u_title"));
+			}
+			else if(is_null($content)) {
+				$blank = new WikiPage();
+				$blank->title = $title;
+				$page->add_main_block(new Block("Content", $this->create_edit_html($blank)));
+			}
+			else if(isset($_GET['edit']) && $_GET['edit'] == "on") {
+				$page->add_main_block(new Block("Content", $this->create_edit_html($content)));
+			}
+			else {
+				$page->add_main_block(new Block("Content", $this->create_display_html($content)));
+			}
+		}
+
+		if(is_a($event, 'WikiUpdateEvent')) {
+			$this->update_wiki_page($event->user, $event->page);
+		}
+	}
+// }}}
+// installer {{{
+	protected function install() {
+		global $database;
+		global $config;
+		$database->Execute("CREATE TABLE wiki_pages (
+			id int(11) NOT NULL auto_increment,
+			owner_id int(11) NOT NULL,
+			owner_ip char(15) NOT NULL,
+			date datetime default NULL,
+			title varchar(255) NOT NULL,
+			revision int(11) NOT NULL default 1,
+			body text NOT NULL,
+			PRIMARY KEY (id), UNIQUE (title, revision)
+		)");
+		$config->set_int("ext_wiki_version", 1);
+	}
+// }}}
+// database {{{
+	private function get_page($title, $revision=-1) {
+		global $database;
+		$row = $database->db->GetRow("
+				SELECT *
+				FROM wiki_pages
+				WHERE title LIKE ?
+				ORDER BY revision DESC", array($title));
+		return ($row ? new WikiPage($row) : null);
+	}
+	private function set_page($title, $rev, $body) {
+		global $database;
+		global $user;
+		// FIXME: deal with collisions
+		$row = $database->Execute("
+				INSERT INTO wiki_pages(owner_id, owner_ip, date, title, revision, body)
+				VALUES (?, ?, now(), ?, ?, ?)", array($user->id, $_SERVER['REMOTE_ADDR'], $title, $rev, $body));
+	}
+// }}}
+// html {{{
+	private function create_edit_html($page) {
+		$h_title = html_escape($page->title);
+		$u_title = url_escape($page->title);
+		$i_revision = int_escape($page->revision) + 1;
+
+		return "
+			<form action='".make_link("wiki/$u_title", "save=on")."' method='POST'>
+				<input type='hidden' name='title' value='$h_title'>
+				<input type='hidden' name='revision' value='$i_revision'>
+				<textarea name='body' style='width: 100%' rows='20'>".html_escape($page->body)."</textarea>
+				<br><input type='submit' value='Save'>
+			</form>
+		";
+	}
+
+	private function create_display_html($page) {
+		$owner = $page->get_owner();
+
+		$html = "";
+		$html .= bbcode_to_html($page->body);
+		$html .= "<hr>";
+		$html .= "<p>Revision {$page->revision} by {$owner->name} at {$page->date} ";
+		$html .= "[<a href='".make_link("wiki/{$page->title}", "edit=on")."'>edit</a>] ";
+
+		return $html;
+	}
+// }}}
+}
+add_event_listener(new Wiki());
+?>