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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Renderable class to display a set of subscriptions in the manage subscriptions page.
 *
 * @package    tool_monitor
 * @copyright  2014 onwards Ankit Agarwal <ankit.agrr@gmail.com>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

namespace tool_monitor\output\managesubs;

defined('MOODLE_INTERNAL') || die;

require_once($CFG->libdir . '/tablelib.php');

/**
 * Renderable class to display a set of subscriptions in the manage subscriptions page.
 *
 * @since      Moodle 2.8
 * @package    tool_monitor
 * @copyright  2014 onwards Ankit Agarwal <ankit.agrr@gmail.com>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class subs extends \table_sql implements \renderable {

/**
     * @var int course id.
     */
    public $courseid;

/**
     * @var \context_course|\context_system context of the page to be rendered.
     */
    protected $context;

/**
     * Sets up the table_log parameters.
     *
     * @param string $uniqueid unique id of form.
     * @param \moodle_url $url url where this table is displayed.
     * @param int $courseid course id.
     * @param int $perpage Number of rules to display per page.
     */
    public function __construct($uniqueid, \moodle_url $url, $courseid = 0, $perpage = 100) {
        parent::__construct($uniqueid);

$this->set_attribute('class', 'toolmonitor subscriptions generaltable generalbox');
        $this->define_columns(array('name', 'description', 'course', 'plugin', 'instance', 'eventname',
            'filters', 'unsubscribe'));
        $this->define_headers(array(
                get_string('rulename', 'tool_monitor'),
                get_string('description'),
                get_string('course'),
                get_string('area', 'tool_monitor'),
                get_string('moduleinstance', 'tool_monitor'),
                get_string('event', 'tool_monitor'),
                get_string('frequency', 'tool_monitor'),
                get_string('unsubscribe', 'tool_monitor')
            )
        );
        $this->courseid = $courseid;
        $this->pagesize = $perpage;
        $systemcontext = \context_system::instance();
        $this->context = empty($courseid) ? $systemcontext : \context_course::instance($courseid);
        $this->collapsible(false);
        $this->sortable(false);
        $this->pageable(true);
        $this->is_downloadable(false);
        $this->define_baseurl($url);
    }

/**
     * Generate content for name column.
     *
     * @param \tool_monitor\subscription $sub subscription object
     * @return string html used to display the rule name.
     */
    public function col_name(\tool_monitor\subscription $sub) {
        return $sub->get_name($this->context);
    }

/**
     * Generate content for description column.
     *
     * @param \tool_monitor\subscription $sub subscription object
     * @return string html used to display the description.
     */
    public function col_description(\tool_monitor\subscription $sub) {
        return $sub->get_description($this->context);
    }

/**
     * Generate content for course column.
     *
     * @param \tool_monitor\subscription $sub subscription object
     * @return string html used to display the course name.
     */
    public function col_course(\tool_monitor\subscription $sub) {
        $coursename = $sub->get_course_name($this->context);

$courseid = $sub->courseid;
        if (empty($courseid)) {
            return $coursename;
        } else {
            return \html_writer::link(new \moodle_url('/course/view.php', array('id' => $courseid)), $coursename);
        }
    }

/**
     * Generate content for plugin column.
     *
     * @param \tool_monitor\subscription $sub subscription object
     * @return string html used to display the plugin name.
     */
    public function col_plugin(\tool_monitor\subscription $sub) {
        return $sub->get_plugin_name();
    }

/**
     * Generate content for instance column.
     *
     * @param \tool_monitor\subscription $sub subscription object
     * @return string html used to display the instance name.
     */
    public function col_instance(\tool_monitor\subscription $sub) {
        return $sub->get_instance_name();
    }

/**
     * Generate content for eventname column.
     *
     * @param \tool_monitor\subscription $sub subscription object
     * @return string html used to display the event name.
     */
    public function col_eventname(\tool_monitor\subscription $sub) {
        return $sub->get_event_name();
    }

/**
     * Generate content for filters column.
     *
     * @param \tool_monitor\subscription $sub subscription object
     * @return string html used to display the filters.
     */
    public function col_filters(\tool_monitor\subscription $sub) {
        return $sub->get_filters_description();
    }

/**
     * Generate content for unsubscribe column.
     *
     * @param \tool_monitor\subscription $sub subscription object
     * @return string html used to display the unsubscribe field.
     */
    public function col_unsubscribe(\tool_monitor\subscription $sub) {
        global $OUTPUT, $CFG;

$deleteurl = new \moodle_url($CFG->wwwroot. '/admin/tool/monitor/index.php', array('subscriptionid' => $sub->id,
                'action' => 'unsubscribe', 'courseid' => $this->courseid, 'sesskey' => sesskey()));
        $icon = $OUTPUT->render(new \pix_icon('t/delete', get_string('deletesubscription', 'tool_monitor')));

return \html_writer::link($deleteurl, $icon, array('class' => 'action-icon'));
    }

/**
     * Query the reader. Store results in the object for use by build_table.
     *
     * @param int $pagesize size of page for paginated displayed table.
     * @param bool $useinitialsbar do you want to use the initials bar.
     */
    public function query_db($pagesize, $useinitialsbar = true) {

$total = \tool_monitor\subscription_manager::count_user_subscriptions();
        $this->pagesize($pagesize, $total);
        $subs = \tool_monitor\subscription_manager::get_user_subscriptions($this->get_page_start(), $this->get_page_size());
        $this->rawdata = $subs;
        // Set initial bars.
        if ($useinitialsbar) {
            $this->initialbars($total > $pagesize);
        }
    }
}