src/Module/Conversation/Community.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2020, Friendica
   4  *
   5  * @license GNU AGPL version 3 or any later version
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as
   9  * published by the Free Software Foundation, either version 3 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19  *
  20  * See update_profile.php for documentation
  21  */
  22
  23 namespace Friendica\Module\Conversation;
  24
  25 use Friendica\BaseModule;
  26 use Friendica\Content\BoundariesPager;
  27 use Friendica\Content\Feature;
  28 use Friendica\Content\Nav;
  29 use Friendica\Content\Widget\TrendingTags;
  30 use Friendica\Core\ACL;
  31 use Friendica\Core\Renderer;
  32 use Friendica\Core\Session;
  33 use Friendica\Database\DBA;
  34 use Friendica\DI;
  35 use Friendica\Model\Item;
  36 use Friendica\Model\User;
  37 use Friendica\Network\HTTPException;
  38
  39 class Community extends BaseModule
  40 {
  41         protected static $page_style;
  42         protected static $content;
  43         protected static $accounttype;
  44         protected static $itemsPerPage;
  45         protected static $since_id;
  46         protected static $max_id;
  47
  48         public static function content(array $parameters = [])
  49         {
  50                 self::parseRequest($parameters);
  51
  52                 $tabs = [];
  53
  54                 if ((Session::isAuthenticated() || in_array(self::$page_style, [CP_USERS_AND_GLOBAL, CP_USERS_ON_SERVER])) && empty(DI::config()->get('system', 'singleuser'))) {
  55                         $tabs[] = [
  56                                 'label' => DI::l10n()->t('Local Community'),
  57                                 'url' => 'community/local',
  58                                 'sel' => self::$content == 'local' ? 'active' : '',
  59                                 'title' => DI::l10n()->t('Posts from local users on this server'),
  60                                 'id' => 'community-local-tab',
  61                                 'accesskey' => 'l'
  62                         ];
  63                 }
  64
  65                 if (Session::isAuthenticated() || in_array(self::$page_style, [CP_USERS_AND_GLOBAL, CP_GLOBAL_COMMUNITY])) {
  66                         $tabs[] = [
  67                                 'label' => DI::l10n()->t('Global Community'),
  68                                 'url' => 'community/global',
  69                                 'sel' => self::$content == 'global' ? 'active' : '',
  70                                 'title' => DI::l10n()->t('Posts from users of the whole federated network'),
  71                                 'id' => 'community-global-tab',
  72                                 'accesskey' => 'g'
  73                         ];
  74                 }
  75
  76                 $tab_tpl = Renderer::getMarkupTemplate('common_tabs.tpl');
  77                 $o = Renderer::replaceMacros($tab_tpl, ['$tabs' => $tabs]);
  78
  79                 Nav::setSelected('community');
  80
  81                 $items = self::getItems();
  82
  83                 if (!DBA::isResult($items)) {
  84                         notice(DI::l10n()->t('No results.'));
  85                         return $o;
  86                 }
  87
  88                 // We need the editor here to be able to reshare an item.
  89                 if (Session::isAuthenticated()) {
  90                         $x = [
  91                                 'is_owner' => true,
  92                                 'allow_location' => DI::app()->user['allow_location'],
  93                                 'default_location' => DI::app()->user['default-location'],
  94                                 'nickname' => DI::app()->user['nickname'],
  95                                 'lockstate' => (is_array(DI::app()->user) && (strlen(DI::app()->user['allow_cid']) || strlen(DI::app()->user['allow_gid']) || strlen(DI::app()->user['deny_cid']) || strlen(DI::app()->user['deny_gid'])) ? 'lock' : 'unlock'),
  96                                 'acl' => ACL::getFullSelectorHTML(DI::page(), DI::app()->user, true),
  97                                 'bang' => '',
  98                                 'visitor' => 'block',
  99                                 'profile_uid' => local_user(),
 100                         ];
 101                         $o .= status_editor(DI::app(), $x, 0, true);
 102                 }
 103
 104                 $o .= conversation(DI::app(), $items, 'community', false, false, 'commented', local_user());
 105
 106                 $pager = new BoundariesPager(
 107                         DI::l10n(),
 108                         DI::args()->getQueryString(),
 109                         $items[0]['commented'],
 110                         $items[count($items) - 1]['commented'],
 111                         self::$itemsPerPage
 112                 );
 113
 114                 $o .= $pager->renderMinimal(count($items));
 115
 116                 if (Feature::isEnabled(local_user(), 'trending_tags')) {
 117                         DI::page()['aside'] .= TrendingTags::getHTML(self::$content);
 118                 }
 119
 120                 $t = Renderer::getMarkupTemplate("community.tpl");
 121                 return Renderer::replaceMacros($t, [
 122                         '$content' => $o,
 123                         '$header' => '',
 124                         '$show_global_community_hint' => (self::$content == 'global') && DI::config()->get('system', 'show_global_community_hint'),
 125                         '$global_community_hint' => DI::l10n()->t("This community stream shows all public posts received by this node. They may not reflect the opinions of this node’s users.")
 126                 ]);
 127         }
 128
 129         /**
 130          * Computes module parameters from the request and local configuration
 131          *
 132          * @param array $parameters
 133          * @throws HTTPException\BadRequestException
 134          * @throws HTTPException\ForbiddenException
 135          */
 136         protected static function parseRequest(array $parameters)
 137         {
 138                 if (DI::config()->get('system', 'block_public') && !Session::isAuthenticated()) {
 139                         throw new HTTPException\ForbiddenException(DI::l10n()->t('Public access denied.'));
 140                 }
 141
 142                 self::$page_style = DI::config()->get('system', 'community_page_style');
 143
 144                 if (self::$page_style == CP_NO_INTERNAL_COMMUNITY) {
 145                         throw new HTTPException\ForbiddenException(DI::l10n()->t('Access denied.'));
 146                 }
 147
 148                 switch ($parameters['accounttype'] ?? '') {
 149                         case 'person':
 150                                 self::$accounttype = User::ACCOUNT_TYPE_PERSON;
 151                                 break;
 152                         case 'organisation':
 153                                 self::$accounttype = User::ACCOUNT_TYPE_ORGANISATION;
 154                                 break;
 155                         case 'news':
 156                                 self::$accounttype = User::ACCOUNT_TYPE_NEWS;
 157                                 break;
 158                         case 'community':
 159                                 self::$accounttype = User::ACCOUNT_TYPE_COMMUNITY;
 160                                 break;
 161                         default:
 162                                 self::$accounttype = null;
 163                                 break;
 164                 }
 165
 166                 self::$content = $parameters['content'] ?? '';
 167                 if (!self::$content) {
 168                         if (!empty(DI::config()->get('system', 'singleuser'))) {
 169                                 // On single user systems only the global page does make sense
 170                                 self::$content = 'global';
 171                         } else {
 172                                 // When only the global community is allowed, we use this as default
 173                                 self::$content = self::$page_style == CP_GLOBAL_COMMUNITY ? 'global' : 'local';
 174                         }
 175                 }
 176
 177                 if (!in_array(self::$content, ['local', 'global'])) {
 178                         throw new HTTPException\BadRequestException(DI::l10n()->t('Community option not available.'));
 179                 }
 180
 181                 // Check if we are allowed to display the content to visitors
 182                 if (!Session::isAuthenticated()) {
 183                         $available = self::$page_style == CP_USERS_AND_GLOBAL;
 184
 185                         if (!$available) {
 186                                 $available = (self::$page_style == CP_USERS_ON_SERVER) && (self::$content == 'local');
 187                         }
 188
 189                         if (!$available) {
 190                                 $available = (self::$page_style == CP_GLOBAL_COMMUNITY) && (self::$content == 'global');
 191                         }
 192
 193                         if (!$available) {
 194                                 throw new HTTPException\ForbiddenException(DI::l10n()->t('Not available.'));
 195                         }
 196                 }
 197
 198                 if (DI::mode()->isMobile()) {
 199                         self::$itemsPerPage = DI::pConfig()->get(local_user(), 'system', 'itemspage_mobile_network',
 200                                 DI::config()->get('system', 'itemspage_network_mobile'));
 201                 } else {
 202                         self::$itemsPerPage = DI::pConfig()->get(local_user(), 'system', 'itemspage_network',
 203                                 DI::config()->get('system', 'itemspage_network'));
 204                 }
 205
 206                 // now that we have the user settings, see if the theme forces
 207                 // a maximum item number which is lower then the user choice
 208                 if ((DI::app()->force_max_items > 0) && (DI::app()->force_max_items < self::$itemsPerPage)) {
 209                         self::$itemsPerPage = DI::app()->force_max_items;
 210                 }
 211
 212                 self::$since_id = $_GET['since_id'] ?? null;
 213                 self::$max_id   = $_GET['max_id']   ?? null;
 214         }
 215
 216         /**
 217          * Computes the displayed items.
 218          *
 219          * Community pages have a restriction on how many successive posts by the same author can show on any given page,
 220          * so we may have to retrieve more content beyond the first query
 221          *
 222          * @return array
 223          * @throws \Exception
 224          */
 225         protected static function getItems()
 226         {
 227                 $items = self::selectItems(self::$since_id, self::$max_id, self::$itemsPerPage);
 228
 229                 $maxpostperauthor = (int) DI::config()->get('system', 'max_author_posts_community_page');
 230                 if ($maxpostperauthor != 0 && self::$content == 'local') {
 231                         $count = 1;
 232                         $previousauthor = '';
 233                         $numposts = 0;
 234                         $selected_items = [];
 235
 236                         while (count($selected_items) < self::$itemsPerPage && ++$count < 50 && count($items) > 0) {
 237                                 foreach ($items as $item) {
 238                                         if ($previousauthor == $item["author-link"]) {
 239                                                 ++$numposts;
 240                                         } else {
 241                                                 $numposts = 0;
 242                                         }
 243                                         $previousauthor = $item["author-link"];
 244
 245                                         if (($numposts < $maxpostperauthor) && (count($selected_items) < self::$itemsPerPage)) {
 246                                                 $selected_items[] = $item;
 247                                         }
 248                                 }
 249
 250                                 // If we're looking at a "previous page", the lookup continues forward in time because the list is
 251                                 // sorted in chronologically decreasing order
 252                                 if (isset(self::$since_id)) {
 253                                         self::$since_id = $items[0]['commented'];
 254                                 } else {
 255                                         // In any other case, the lookup continues backwards in time
 256                                         self::$max_id = $items[count($items) - 1]['commented'];
 257                                 }
 258
 259                                 $items = self::selectItems(self::$since_id, self::$max_id, self::$itemsPerPage);
 260                         }
 261                 } else {
 262                         $selected_items = $items;
 263                 }
 264
 265                 return $selected_items;
 266         }
 267
 268         /**
 269          * Database query for the comunity page
 270          *
 271          * @param $since_id
 272          * @param $max_id
 273          * @param $itemspage
 274          * @return array
 275          * @throws \Exception
 276          * @TODO Move to repository/factory
 277          */
 278         private static function selectItems($since_id, $max_id, $itemspage)
 279         {
 280                 $r = false;
 281
 282                 if (self::$content == 'local') {
 283                         if (!is_null(self::$accounttype)) {
 284                                 $condition = ["`wall` AND `origin` AND `private` = ? AND `owner`.`contact-type` = ?", Item::PUBLIC, self::$accounttype];
 285                         } else {
 286                                 $condition = ["`wall` AND `origin` AND `private` = ?", Item::PUBLIC];
 287                         }
 288                 } elseif (self::$content == 'global') {
 289                         if (!is_null(self::$accounttype)) {
 290                                 $condition = ["`uid` = ? AND `private` = ? AND `owner`.`contact-type` = ?", 0, Item::PUBLIC, self::$accounttype];
 291                         } else {
 292                                 $condition = ["`uid` = ? AND `private` = ?", 0, Item::PUBLIC];
 293                         }
 294                 } else {
 295                         return [];
 296                 }
 297
 298                 if (local_user() && DI::config()->get('system', 'community_no_followers')) {
 299                         $condition[0] .= " AND NOT EXISTS (SELECT `uri-id` FROM `thread` AS t1 WHERE `t1`.`uri-id` = `thread`.`uri-id` AND `t1`.`uid` = ?)";
 300                         $condition[] = local_user();
 301                 }
 302
 303                 if (isset($max_id)) {
 304                         $condition[0] .= " AND `commented` < ?";
 305                         $condition[] = $max_id;
 306                 }
 307
 308                 if (isset($since_id)) {
 309                         $condition[0] .= " AND `commented` > ?";
 310                         $condition[] = $since_id;
 311                 }
 312
 313                 $r = Item::selectThreadForUser(0, ['uri', 'commented', 'author-link'], $condition, ['order' => ['commented' => true], 'limit' => $itemspage]);
 314
 315                 return DBA::toArray($r);
 316         }
 317 }