src/Module/Conversation/Community.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2022, the Friendica project
   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\Text\HTML;
  30 use Friendica\Content\Widget;
  31 use Friendica\Content\Widget\TrendingTags;
  32 use Friendica\Core\Renderer;
  33 use Friendica\Core\Session;
  34 use Friendica\Database\DBA;
  35 use Friendica\DI;
  36 use Friendica\Model\Item;
  37 use Friendica\Model\Post;
  38 use Friendica\Model\User;
  39 use Friendica\Network\HTTPException;
  40
  41 class Community extends BaseModule
  42 {
  43         protected static $page_style;
  44         protected static $content;
  45         protected static $accountTypeString;
  46         protected static $accountType;
  47         protected static $itemsPerPage;
  48         protected static $min_id;
  49         protected static $max_id;
  50         protected static $item_id;
  51
  52         protected function content(array $request = []): string
  53         {
  54                 $this->parseRequest();
  55
  56                 if (DI::pConfig()->get(local_user(), 'system', 'infinite_scroll')) {
  57                         $tpl = Renderer::getMarkupTemplate('infinite_scroll_head.tpl');
  58                         $o = Renderer::replaceMacros($tpl, ['$reload_uri' => DI::args()->getQueryString()]);
  59                 } else {
  60                         $o = '';
  61                 }
  62
  63                 if (empty($_GET['mode']) || ($_GET['mode'] != 'raw')) {
  64                         $tabs = [];
  65
  66                         if ((Session::isAuthenticated() || in_array(self::$page_style, [CP_USERS_AND_GLOBAL, CP_USERS_ON_SERVER])) && empty(DI::config()->get('system', 'singleuser'))) {
  67                                 $tabs[] = [
  68                                         'label' => DI::l10n()->t('Local Community'),
  69                                         'url' => 'community/local',
  70                                         'sel' => self::$content == 'local' ? 'active' : '',
  71                                         'title' => DI::l10n()->t('Posts from local users on this server'),
  72                                         'id' => 'community-local-tab',
  73                                         'accesskey' => 'l'
  74                                 ];
  75                         }
  76
  77                         if (Session::isAuthenticated() || in_array(self::$page_style, [CP_USERS_AND_GLOBAL, CP_GLOBAL_COMMUNITY])) {
  78                                 $tabs[] = [
  79                                         'label' => DI::l10n()->t('Global Community'),
  80                                         'url' => 'community/global',
  81                                         'sel' => self::$content == 'global' ? 'active' : '',
  82                                         'title' => DI::l10n()->t('Posts from users of the whole federated network'),
  83                                         'id' => 'community-global-tab',
  84                                         'accesskey' => 'g'
  85                                 ];
  86                         }
  87
  88                         $tab_tpl = Renderer::getMarkupTemplate('common_tabs.tpl');
  89                         $o .= Renderer::replaceMacros($tab_tpl, ['$tabs' => $tabs]);
  90
  91                         Nav::setSelected('community');
  92
  93                         DI::page()['aside'] .= Widget::accounttypes('community/' . self::$content, self::$accountTypeString);
  94
  95                         if (local_user() && DI::config()->get('system', 'community_no_sharer')) {
  96                                 $path = self::$content;
  97                                 if (!empty($this->parameters['accounttype'])) {
  98                                         $path .= '/' . $this->parameters['accounttype'];
  99                                 }
 100                                 $query_parameters = [];
 101
 102                                 if (!empty($_GET['min_id'])) {
 103                                         $query_parameters['min_id'] = $_GET['min_id'];
 104                                 }
 105                                 if (!empty($_GET['max_id'])) {
 106                                         $query_parameters['max_id'] = $_GET['max_id'];
 107                                 }
 108                                 if (!empty($_GET['last_commented'])) {
 109                                         $query_parameters['max_id'] = $_GET['last_commented'];
 110                                 }
 111
 112                                 $path_all = $path . (!empty($query_parameters) ? '?' . http_build_query($query_parameters) : '');
 113                                 $path_no_sharer = $path . '?' . http_build_query(array_merge($query_parameters, ['no_sharer' => true]));
 114                                 DI::page()['aside'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('widget/community_sharer.tpl'), [
 115                                         '$title'           => DI::l10n()->t('Own Contacts'),
 116                                         '$path_all'        => $path_all,
 117                                         '$path_no_sharer'  => $path_no_sharer,
 118                                         '$no_sharer'       => !empty($_REQUEST['no_sharer']),
 119                                         '$all'             => DI::l10n()->t('Include'),
 120                                         '$no_sharer_label' => DI::l10n()->t('Hide'),
 121                                 ]);
 122                         }
 123
 124                         if (Feature::isEnabled(local_user(), 'trending_tags')) {
 125                                 DI::page()['aside'] .= TrendingTags::getHTML(self::$content);
 126                         }
 127
 128                         // We need the editor here to be able to reshare an item.
 129                         if (Session::isAuthenticated()) {
 130                                 $o .= DI::conversation()->statusEditor([], 0, true);
 131                         }
 132                 }
 133
 134                 $items = self::getItems();
 135
 136                 if (!DBA::isResult($items)) {
 137                         notice(DI::l10n()->t('No results.'));
 138                         return $o;
 139                 }
 140
 141                 $o .= DI::conversation()->create($items, 'community', false, false, 'commented', local_user());
 142
 143                 $pager = new BoundariesPager(
 144                         DI::l10n(),
 145                         DI::args()->getQueryString(),
 146                         $items[0]['commented'],
 147                         $items[count($items) - 1]['commented'],
 148                         self::$itemsPerPage
 149                 );
 150
 151                 if (DI::pConfig()->get(local_user(), 'system', 'infinite_scroll')) {
 152                         $o .= HTML::scrollLoader();
 153                 } else {
 154                         $o .= $pager->renderMinimal(count($items));
 155                 }
 156
 157                 $t = Renderer::getMarkupTemplate("community.tpl");
 158                 return Renderer::replaceMacros($t, [
 159                         '$content' => $o,
 160                         '$header' => '',
 161                         '$show_global_community_hint' => (self::$content == 'global') && DI::config()->get('system', 'show_global_community_hint'),
 162                         '$global_community_hint' => DI::l10n()->t("This community stream shows all public posts received by this node. They may not reflect the opinions of this node’s users.")
 163                 ]);
 164         }
 165
 166         /**
 167          * Computes module parameters from the request and local configuration
 168          *
 169          * @throws HTTPException\BadRequestException
 170          * @throws HTTPException\ForbiddenException
 171          */
 172         protected function parseRequest()
 173         {
 174                 if (DI::config()->get('system', 'block_public') && !Session::isAuthenticated()) {
 175                         throw new HTTPException\ForbiddenException(DI::l10n()->t('Public access denied.'));
 176                 }
 177
 178                 self::$page_style = DI::config()->get('system', 'community_page_style');
 179
 180                 if (self::$page_style == CP_NO_INTERNAL_COMMUNITY) {
 181                         throw new HTTPException\ForbiddenException(DI::l10n()->t('Access denied.'));
 182                 }
 183
 184                 self::$accountTypeString = $_GET['accounttype'] ?? $this->parameters['accounttype'] ?? '';
 185                 self::$accountType = User::getAccountTypeByString(self::$accountTypeString);
 186
 187                 self::$content = $this->parameters['content'] ?? '';
 188                 if (!self::$content) {
 189                         if (!empty(DI::config()->get('system', 'singleuser'))) {
 190                                 // On single user systems only the global page does make sense
 191                                 self::$content = 'global';
 192                         } else {
 193                                 // When only the global community is allowed, we use this as default
 194                                 self::$content = self::$page_style == CP_GLOBAL_COMMUNITY ? 'global' : 'local';
 195                         }
 196                 }
 197
 198                 if (!in_array(self::$content, ['local', 'global'])) {
 199                         throw new HTTPException\BadRequestException(DI::l10n()->t('Community option not available.'));
 200                 }
 201
 202                 // Check if we are allowed to display the content to visitors
 203                 if (!Session::isAuthenticated()) {
 204                         $available = self::$page_style == CP_USERS_AND_GLOBAL;
 205
 206                         if (!$available) {
 207                                 $available = (self::$page_style == CP_USERS_ON_SERVER) && (self::$content == 'local');
 208                         }
 209
 210                         if (!$available) {
 211                                 $available = (self::$page_style == CP_GLOBAL_COMMUNITY) && (self::$content == 'global');
 212                         }
 213
 214                         if (!$available) {
 215                                 throw new HTTPException\ForbiddenException(DI::l10n()->t('Not available.'));
 216                         }
 217                 }
 218
 219                 if (DI::mode()->isMobile()) {
 220                         self::$itemsPerPage = DI::pConfig()->get(local_user(), 'system', 'itemspage_mobile_network',
 221                                 DI::config()->get('system', 'itemspage_network_mobile'));
 222                 } else {
 223                         self::$itemsPerPage = DI::pConfig()->get(local_user(), 'system', 'itemspage_network',
 224                                 DI::config()->get('system', 'itemspage_network'));
 225                 }
 226
 227                 if (!empty($_GET['item'])) {
 228                         $item = Post::selectFirst(['parent'], ['id' => $_GET['item']]);
 229                         self::$item_id = $item['parent'] ?? 0;
 230                 } else {
 231                         self::$item_id = 0;
 232                 }
 233
 234                 self::$min_id = $_GET['min_id'] ?? null;
 235                 self::$max_id   = $_GET['max_id']   ?? null;
 236                 self::$max_id   = $_GET['last_commented'] ?? self::$max_id;
 237         }
 238
 239         /**
 240          * Computes the displayed items.
 241          *
 242          * Community pages have a restriction on how many successive posts by the same author can show on any given page,
 243          * so we may have to retrieve more content beyond the first query
 244          *
 245          * @return array
 246          * @throws \Exception
 247          */
 248         protected static function getItems()
 249         {
 250                 $items = self::selectItems(self::$min_id, self::$max_id, self::$item_id, self::$itemsPerPage);
 251
 252                 $maxpostperauthor = (int) DI::config()->get('system', 'max_author_posts_community_page');
 253                 if ($maxpostperauthor != 0 && self::$content == 'local') {
 254                         $count = 1;
 255                         $previousauthor = '';
 256                         $numposts = 0;
 257                         $selected_items = [];
 258
 259                         while (count($selected_items) < self::$itemsPerPage && ++$count < 50 && count($items) > 0) {
 260                                 foreach ($items as $item) {
 261                                         if ($previousauthor == $item["author-link"]) {
 262                                                 ++$numposts;
 263                                         } else {
 264                                                 $numposts = 0;
 265                                         }
 266                                         $previousauthor = $item["author-link"];
 267
 268                                         if (($numposts < $maxpostperauthor) && (count($selected_items) < self::$itemsPerPage)) {
 269                                                 $selected_items[] = $item;
 270                                         }
 271                                 }
 272
 273                                 // If we're looking at a "previous page", the lookup continues forward in time because the list is
 274                                 // sorted in chronologically decreasing order
 275                                 if (isset(self::$min_id)) {
 276                                         self::$min_id = $items[0]['commented'];
 277                                 } else {
 278                                         // In any other case, the lookup continues backwards in time
 279                                         self::$max_id = $items[count($items) - 1]['commented'];
 280                                 }
 281
 282                                 $items = self::selectItems(self::$min_id, self::$max_id, self::$item_id, self::$itemsPerPage);
 283                         }
 284                 } else {
 285                         $selected_items = $items;
 286                 }
 287
 288                 return $selected_items;
 289         }
 290
 291         /**
 292          * Database query for the comunity page
 293          *
 294          * @param $min_id
 295          * @param $max_id
 296          * @param $itemspage
 297          * @return array
 298          * @throws \Exception
 299          * @TODO Move to repository/factory
 300          */
 301         private static function selectItems($min_id, $max_id, $item_id, $itemspage)
 302         {
 303                 if (self::$content == 'local') {
 304                         if (!is_null(self::$accountType)) {
 305                                 $condition = ["`wall` AND `origin` AND `private` = ? AND `owner-contact-type` = ?", Item::PUBLIC, self::$accountType];
 306                         } else {
 307                                 $condition = ["`wall` AND `origin` AND `private` = ?", Item::PUBLIC];
 308                         }
 309                 } elseif (self::$content == 'global') {
 310                         if (!is_null(self::$accountType)) {
 311                                 $condition = ["`uid` = ? AND `private` = ? AND `owner-contact-type` = ?", 0, Item::PUBLIC, self::$accountType];
 312                         } else {
 313                                 $condition = ["`uid` = ? AND `private` = ?", 0, Item::PUBLIC];
 314                         }
 315                 } else {
 316                         return [];
 317                 }
 318
 319                 $params = ['order' => ['commented' => true], 'limit' => $itemspage];
 320
 321                 if (!empty($item_id)) {
 322                         $condition[0] .= " AND `id` = ?";
 323                         $condition[] = $item_id;
 324                 } else {
 325                         if (local_user() && !empty($_REQUEST['no_sharer'])) {
 326                                 $condition[0] .= " AND NOT EXISTS (SELECT `uri-id` FROM `post-user` WHERE `post-user`.`uri-id` = `post-thread-user-view`.`uri-id` AND `post-user`.`uid` = ?)";
 327                                 $condition[] = local_user();
 328                         }
 329
 330                         if (isset($max_id)) {
 331                                 $condition[0] .= " AND `commented` < ?";
 332                                 $condition[] = $max_id;
 333                         }
 334
 335                         if (isset($min_id)) {
 336                                 $condition[0] .= " AND `commented` > ?";
 337                                 $condition[] = $min_id;
 338
 339                                 // Previous page case: we want the items closest to min_id but for that we need to reverse the query order
 340                                 if (!isset($max_id)) {
 341                                         $params['order']['commented'] = false;
 342                                 }
 343                         }
 344                 }
 345
 346                 $r = Post::selectThreadForUser(0, ['uri-id', 'commented', 'author-link'], $condition, $params);
 347
 348                 $items = Post::toArray($r);
 349                 if (empty($items)) {
 350                         return [];
 351                 }
 352
 353                 // Previous page case: once we get the relevant items closest to min_id, we need to restore the expected display order
 354                 if (empty($item_id) && isset($min_id) && !isset($max_id)) {
 355                         $items = array_reverse($items);
 356                 }
 357
 358                 return $items;
 359         }
 360 }