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   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * Moodle site analysable.
  19   *
  20   * @package   core_analytics
  21   * @copyright 2016 David Monllao {@link http://www.davidmonllao.com}
  22   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  namespace core_analytics;
  26  
  27  defined('MOODLE_INTERNAL') || die();
  28  
  29  /**
  30   * Moodle site analysable.
  31   *
  32   * @package   core_analytics
  33   * @copyright 2016 David Monllao {@link http://www.davidmonllao.com}
  34   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  35   */
  36  class site implements \core_analytics\analysable {
  37  
  38      /**
  39       * @var int
  40       */
  41      protected $start;
  42  
  43      /**
  44       * @var int
  45       */
  46      protected $end;
  47  
  48      /**
  49       * Analysable id
  50       *
  51       * @return int
  52       */
  53      public function get_id() {
  54          return SYSCONTEXTID;
  55      }
  56  
  57      /**
  58       * Site.
  59       *
  60       * @return string
  61       */
  62      public function get_name() {
  63          return get_string('site');
  64      }
  65  
  66      /**
  67       * Analysable context.
  68       *
  69       * @return \context
  70       */
  71      public function get_context() {
  72          return \context_system::instance();
  73      }
  74  
  75      /**
  76       * Analysable start timestamp.
  77       *
  78       * @return int
  79       */
  80      public function get_start() {
  81          if (!empty($this->start)) {
  82              return $this->start;
  83          }
  84  
  85          // Much faster than reading the first log in the site.
  86          $admins = get_admins();
  87          $this->start = 9999999999;
  88          foreach ($admins as $admin) {
  89              if ($admin->firstaccess < $this->start) {
  90                  $this->start = $admin->firstaccess;
  91              }
  92          }
  93          return $this->start;
  94      }
  95  
  96      /**
  97       * Analysable end timestamp.
  98       *
  99       * @return int
 100       */
 101      public function get_end() {
 102          if (!empty($this->end)) {
 103              return $this->end;
 104          }
 105  
 106          $this->end = time();
 107          return $this->end;
 108      }
 109  }