actions/tag.php

   1 <?php
   2 /*
   3  * Laconica - a distributed open-source microblogging tool
   4  * Copyright (C) 2008, Controlez-Vous, Inc.
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU Affero General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU Affero General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Affero General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 if (!defined('LACONICA')) { exit(1); }
  21
  22 require_once(INSTALLDIR.'/actions/showstream.php');
  23 define('TAGS_PER_PAGE', 20);
  24
  25 class TagAction extends StreamAction {
  26
  27         function handle($args) {
  28
  29                 parent::handle($args);
  30
  31                 # Looks like we're good; show the header
  32
  33                 if (isset($args['tag']) && $args['tag']) {
  34                         $tag = $args['tag'];
  35                         common_show_header(sprintf(_("Notices tagged with %s"), $tag),
  36                                                            array($this, 'show_header'), $tag,
  37                                                            array($this, 'show_top'));
  38
  39                         $this->show_notices($tag);
  40                 } else {
  41                         common_show_header(_("Tags"),
  42                                                            array($this, 'show_header'), '',
  43                                                            array($this, 'show_top'));
  44                         $this->show_tags();
  45                 }
  46
  47                 common_show_footer();
  48         }
  49
  50         function show_header($tag = false) {
  51                 if (false && $tag) {
  52                         common_element('link', array('rel' => 'alternate',
  53                                                                                  'href' => common_local_url('tagrss', array('tag' => $tag)),
  54                                                                                  'type' => 'application/rss+xml',
  55                                                                                  'title' => sprintf(_('Feed for tag %s'), $tag)));
  56                 }
  57         }
  58
  59         function get_instructions() {
  60                 return _('Showing most popular tags from the last week');
  61         }
  62
  63         function show_top($tag = false) {
  64                 if (!$tag) {
  65                         $instr = $this->get_instructions();
  66                         $output = common_markup_to_html($instr);
  67                         common_element_start('div', 'instructions');
  68                         common_raw($output);
  69                         common_element_end('div');
  70                 }
  71
  72                 common_element_start('ul', array('id' => 'nav_views'));
  73
  74                 common_menu_item(common_local_url('tags'),
  75                                                  _('Recent Tags'),
  76                                                  _('Recent Tags'),
  77                                                  !$tag);
  78                 if ($tag) {
  79                         common_menu_item(common_local_url('tag', array('tag' => $tag)),
  80                                                          '#' . $tag,
  81                                                          sprintf(_("Notices tagged with %s"), $tag),
  82                                                          true);
  83                 }
  84                 common_element_end('ul');
  85         }
  86
  87         function show_tags()
  88         {
  89                 $tags = DB_DataObject::factory('Notice_tag');
  90                 $tags->selectAdd('count(1) as num');
  91                 $tags->selectAdd('max(notice_id) as last_notice_id');
  92                 $tags->groupBy('tag');
  93                 $tags->orderBy('num DESC, last_notice_id DESC');
  94                 $tags->whereAdd('created > "' . strftime('%Y-%m-%d %H:%M:%S', strtotime('-1 WEEK')) . '"');
  95
  96                 $page = ($this->arg('page')) ? ($this->arg('page')+0) : 1;
  97
  98                 $tags->limit((($page-1)*TAGS_PER_PAGE), TAGS_PER_PAGE + 1);
  99
 100                 $cnt = $tags->find();
 101
 102                 if ($cnt > 0) {
 103                         common_element_start('ul', array('id' => 'notices'));
 104                         for ($i = 0; $i < min($cnt, TAGS_PER_PAGE); $i++) {
 105                                 if ($tags->fetch()) {
 106                                         TagAction::show_tag($tags);
 107                                 } else {
 108                                         // shouldn't happen!
 109                                         break;
 110                                 }
 111                         }
 112                         common_element_end('ul');
 113                 }
 114
 115                 common_pagination($page > 1, $cnt > TAGS_PER_PAGE,
 116                                                   $page, 'tags');
 117         }
 118
 119         private static function show_tag($tag) {
 120                 common_element_start('li', array('class' => 'notice_single'));
 121                 common_element_start('a', array(
 122                                                         'class' => 'nickname',
 123                                                         'href' => common_local_url('tag', array('tag' => $tag->tag)),
 124                                                         'title' => sprintf(_("Notices tagged with %s"), $tag->tag)));
 125                 common_text('#' . $tag->tag);
 126                 common_element_end('a');
 127                 common_text(sprintf(_('%s Notices recently tagged with %s'), $tag->num, $tag->tag));
 128
 129                 $notice = Notice::staticGet($tag->last_notice_id);
 130                 if ($notice) {
 131                         $noticeurl = common_local_url('shownotice', array('notice' => $notice->id));
 132                         common_element_start('p', 'time');
 133                         common_text(_('Last message posted: '));
 134                         common_element('a', array('class' => 'permalink',
 135                                                                           'href' => $noticeurl,
 136                                                                           'title' => common_exact_date($notice->created)),
 137                                                         common_date_string($notice->created));
 138
 139                         common_text(_(' by '));
 140                         $profile = $notice->getProfile();
 141                         common_element('a', array('href' => $profile->profileurl),
 142                                                    $profile->nickname);
 143                         common_element_end('p');
 144                 }
 145                 common_element_end('li');
 146         }
 147
 148
 149         function show_notices($tag) {
 150
 151                 $tags = DB_DataObject::factory('Notice_tag');
 152
 153                 $tags->tag = $tag;
 154
 155                 $tags->orderBy('created DESC');
 156
 157                 $page = ($this->arg('page')) ? ($this->arg('page')+0) : 1;
 158
 159                 $tags->limit((($page-1)*NOTICES_PER_PAGE), NOTICES_PER_PAGE + 1);
 160
 161                 $cnt = $tags->find();
 162
 163                 if ($cnt > 0) {
 164                         common_element_start('ul', array('id' => 'notices'));
 165                         for ($i = 0; $i < min($cnt, NOTICES_PER_PAGE); $i++) {
 166                                 if ($tags->fetch()) {
 167                                         $notice = new Notice();
 168                                         $notice->id = $tags->notice_id;
 169                                         $result = $notice->find(true);
 170                                         if (!$result) {
 171                                                 continue;
 172                                         }
 173                                         $this->show_notice($notice);
 174                                 } else {
 175                                         // shouldn't happen!
 176                                         break;
 177                                 }
 178                         }
 179                         common_element_end('ul');
 180                 }
 181
 182                 common_pagination($page > 1, $cnt > NOTICES_PER_PAGE,
 183                                                   $page, 'tag', array('tag' => $tag));
 184         }
 185 }