<?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/>.

namespace core_adminpresets\local\setting;

/**
 * Extends the base class and lists the selected values separated by comma.
 *
 * @package          core_adminpresets
 * @copyright        2021 Pimenko <support@pimenko.com><pimenko.com>
 * @author           Jordan Kesraoui | Sylvain Revenu | Pimenko based on David Monllaó <david.monllao@urv.cat> code
 * @license          http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class adminpresets_admin_setting_configmultiselect extends adminpresets_setting {

    /** @var \admin_setting_configmultiselect $settingdata */
    protected $settingdata;

    /**
     * Ensure that the $value values are setting choices.
     *
     * @param mixed $value Setting value
     * @return mixed Returns false if wrong param value
     */
    protected function set_value($value) {
        if ($value) {
            $options = explode(',', $value);
            foreach ($options as $option) {

                foreach ($this->settingdata->choices as $key => $choice) {

                    if ($key == $option) {
                        $this->value = $option;
                        $this->set_visiblevalue();
                        return true;
                    }
                }
            }

            $value = implode(',', $options);
        }
        $this->value = $value;
        $this->set_visiblevalue();

        return true;
    }

    protected function set_visiblevalue() {
        $values = explode(',', $this->value);
        $visiblevalues = [];

        foreach ($values as $value) {

            if (!empty($this->settingdata->choices[$value])) {
                $visiblevalues[] = $this->settingdata->choices[$value];
            }
        }

        if (empty($visiblevalues)) {
            $this->visiblevalue = '';
            return false;
        }

        $this->visiblevalue = implode(', ', $visiblevalues);
    }
}
