From 930f82a95170e05ad2d4fc079cc944d29521797d Mon Sep 17 00:00:00 2001
From: Evan Prodromou <evan@controlyourself.ca>
Date: Mon, 19 Jan 2009 18:21:14 +0000
Subject: Update tag to use new framework

Broke up the tag action into two different actions (publictagcloud and
tag). Brought it up-to-date with the new framework, but haven't fixed it
for phpcs yet.
---
 actions/publictagcloud.php | 149 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 149 insertions(+)
 create mode 100644 actions/publictagcloud.php

(limited to 'actions/publictagcloud.php')

diff --git a/actions/publictagcloud.php b/actions/publictagcloud.php
new file mode 100644
index 000000000..ec28edbad
--- /dev/null
+++ b/actions/publictagcloud.php
@@ -0,0 +1,149 @@
+<?php
+/**
+ * Laconica, the distributed open-source microblogging tool
+ *
+ * Public tag cloud for notices
+ *
+ * PHP version 5
+ *
+ * LICENCE: This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @category  Public
+ * @package   Laconica
+ * @author    Mike Cochrane <mikec@mikenz.geek.nz>
+ * @author    Evan Prodromou <evan@controlyourself.ca>
+ * @copyright 2008 Mike Cochrane
+ * @copyright 2008-2009 Control Yourself, Inc.
+ * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link      http://laconi.ca/
+ */
+
+if (!defined('LACONICA')) { exit(1); }
+
+define('TAGS_PER_PAGE', 100);
+
+/**
+ * Public tag cloud for notices
+ *
+ * @category Personal
+ * @package  Laconica
+ * @author    Mike Cochrane <mikec@mikenz.geek.nz>
+ * @author    Evan Prodromou <evan@controlyourself.ca>
+ * @copyright 2008 Mike Cochrane
+ * @copyright 2008-2009 Control Yourself, Inc.
+ * @link     http://laconi.ca/
+ */
+
+class PublictagcloudAction extends Action
+{
+    function isReadOnly()
+    {
+        return true;
+    }
+
+    function title()
+    {
+        return _('Public tag cloud');
+    }
+
+    function showPageNotice()
+    {
+        $this->element('p', 'instructions',
+                       sprintf(_('These are most popular recent tags on %s '),
+                               common_config('site', 'name')));
+    }
+
+    function showLocalNav()
+    {
+        $nav = new PublicGroupNav($this);
+        $nav->show();
+    }
+
+    function handle($args)
+    {
+        parent::handle($args);
+        $this->showPage();
+    }
+
+    function showContent()
+    {
+        # This should probably be cached rather than recalculated
+        $tags = new Notice_tag();
+
+        #Need to clear the selection and then only re-add the field
+        #we are grouping by, otherwise it's not a valid 'group by'
+        #even though MySQL seems to let it slide...
+        $tags->selectAdd();
+        $tags->selectAdd('tag');
+
+        #Add the aggregated columns...
+        $tags->selectAdd('max(notice_id) as last_notice_id');
+        if(common_config('db','type')=='pgsql') {
+            $calc='sum(exp(-extract(epoch from (now()-created))/%s)) as weight';
+        } else {
+            $calc='sum(exp(-(now() - created)/%s)) as weight';
+        }
+        $tags->selectAdd(sprintf($calc, common_config('tag', 'dropoff')));
+        $tags->groupBy('tag');
+        $tags->orderBy('weight DESC');
+
+        $tags->limit(TAGS_PER_PAGE);
+
+        $cnt = $tags->find();
+
+        if ($cnt > 0) {
+            $this->elementStart('p', 'tagcloud');
+
+            $tw = array();
+            $sum = 0;
+            while ($tags->fetch()) {
+                $tw[$tags->tag] = $tags->weight;
+                $sum += $tags->weight;
+            }
+
+            ksort($tw);
+
+            foreach ($tw as $tag => $weight) {
+                $this->showTag($tag, $weight, $weight/$sum);
+            }
+
+            $this->elementEnd('p');
+        }
+    }
+
+    function showTag($tag, $weight, $relative)
+    {
+        # XXX: these should probably tune to the size of the site
+        if ($relative > 0.1) {
+            $cls =  'largest';
+        } else if ($relative > 0.05) {
+            $cls = 'verylarge';
+        } else if ($relative > 0.02) {
+            $cls = 'large';
+        } else if ($relative > 0.01) {
+            $cls = 'medium';
+        } else if ($relative > 0.005) {
+            $cls = 'small';
+        } else if ($relative > 0.002) {
+            $cls = 'verysmall';
+        } else {
+            $cls = 'smallest';
+        }
+
+        $this->element('a', array('class' => "$cls weight-$weight relative-$relative",
+                                  'href' => common_local_url('tag', array('tag' => $tag))),
+                       $tag);
+        $this->text(' ');
+    }
+}
-- 
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