<?php
/**
 * @package PublishPress
 * @author  PublishPress
 *
 * Copyright (c) 2018 PublishPress
 *
 * ------------------------------------------------------------------------------
 * Based on Edit Flow
 * Author: Daniel Bachhuber, Scott Bressler, Mohammad Jangda, Automattic, and
 * others
 * Copyright (c) 2009-2016 Mohammad Jangda, Daniel Bachhuber, et al.
 * ------------------------------------------------------------------------------
 *
 * This file is part of PublishPress
 *
 * PublishPress 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.
 *
 * PublishPress 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 PublishPress.  If not, see <http://www.gnu.org/licenses/>.
 */

if (! class_exists('PP_Modules_Settings')) {
    /**
     * class PP_Modules_Settings
     * Threaded commenting in the admin for discussion between writers and editors
     *
     * @author batmoo
     */
    class PP_Modules_Settings extends PP_Module
    {
        const SETTINGS_SLUG = 'pp-modules-settings';

        protected $options_group_name = 'modules_settings';

        public function __construct()
        {
            $this->module_url = $this->get_module_url(__FILE__);
            // Register the module with PublishPress
            $args = [
                'title' => __('General', 'publishpress'),
                'short_description' => false,
                'extended_description' => false,
                'module_url' => $this->module_url,
                'icon_class' => 'dashicons dashicons-admin-settings',
                'slug' => 'modules-settings',
                'default_options' => [
                    'enabled' => 'on',
                ],
                'configure_page_cb' => 'print_configure_view',
                'autoload' => false,
                'options_page' => true,
            ];

            $this->module = PublishPress()->register_module($this->options_group_name, $args);
        }

        /**
         * Initialize the rest of the stuff in the class if the module is active
         */
        public function init()
        {
            if (is_admin()) {
                add_action('admin_init', [$this, 'register_settings']);
                add_action('admin_enqueue_scripts', [$this, 'add_admin_scripts']);
            }
        }

        /**
         * Load any of the admin scripts we need but only on the pages we need them
         */
        public function add_admin_scripts()
        {
            global $pagenow;

            wp_enqueue_style(
                'publishpress-modules-css',
                $this->module_url . 'lib/modules-settings.css',
                false,
                PUBLISHPRESS_VERSION,
                'all'
            );
        }

        /**
         * Register settings for notifications so we can partially use the Settings API
         * (We use the Settings API for form generation, but not saving)
         *
         * @since 0.7
         * @uses  add_settings_section(), add_settings_field()
         */
        public function register_settings()
        {
            add_settings_section(
                $this->module->options_group_name . '_general',
                false,
                '__return_false',
                $this->module->options_group_name
            );

            do_action(
                'publishpress_register_settings_before',
                $this->module->options_group_name,
                $this->module->options_group_name . '_general'
            );
        }

        /**
         * Validate data entered by the user
         *
         * @param array $new_options New values that have been entered by the user
         *
         * @return array $new_options Form values after they've been sanitized
         * @since 0.7
         *
         */
        public function settings_validate($new_options)
        {
            return $new_options;
        }

        /**
         * Save the custom settings
         *
         * @param array $new_options New values that have been entered by the user
         */
        public function settings_save($new_options)
        {
            if (! isset($_POST['_wpnonce'])
                || ! wp_verify_nonce(
                    sanitize_key($_POST['_wpnonce']),
                    'edit-publishpress-settings'
                )
            ) {
                return true;
            }

            if (! isset($_POST['publishpress_options'])) {
                return true;
            }

            global $publishpress;

            if (isset($_POST['publishpress_options']['features'])) {
                $enabledFeatures = (array)$_POST['publishpress_options']['features'];
            } else {
                $enabledFeatures = [];
            }

            // Run through all the modules updating their statuses
            foreach ($publishpress->modules as $mod_data) {
                if ($mod_data->autoload
                    || $mod_data->slug === $this->module->slug) {
                    continue;
                }

                $status = array_key_exists($mod_data->slug, $enabledFeatures) ? 'on' : 'off';
                $publishpress->update_module_option($mod_data->name, 'enabled', $status);
            }

            return true;
        }

        /**
         * Settings page for editorial comments
         *
         * @since 0.7
         */
        public function print_configure_view()
        {
            global $publishpress; ?>
            <form class="basic-settings"
                  action="<?php
                  echo esc_url(menu_page_url($this->module->settings_slug, false)); ?>" method="post">
                <?php
                settings_fields($this->module->options_group_name); ?>
                <?php
                do_settings_sections($this->module->options_group_name); ?>

                <?php
                foreach ($publishpress->class_names as $slug => $class_name) {
                    $mod_data = $publishpress->$slug->module;

                    if ($mod_data->autoload
                        || $mod_data->slug === $this->module->slug
                        || ! isset($mod_data->general_options)
                        || $mod_data->options->enabled != 'on') {
                        continue;
                    }

                    echo sprintf('<h3>%s</h3>', esc_html($mod_data->title));
                    echo sprintf('<p>%s</p>', esc_html($mod_data->short_description));

                    echo '<input name="publishpress_module_name[]" type="hidden" value="' . esc_attr(
                            $mod_data->name
                        ) . '" />';

                    $publishpress->$slug->print_configure_view();
                } ?>

                <div id="modules-wrapper">
                    <h3><?php
                        echo esc_html_e('Features', 'publishpress'); ?></h3>
                    <p><?php
                        echo esc_html_e('Feel free to select only the features you need.', 'publishpress'); ?></p>

                    <table class="form-table">
                        <tbody>
                        <tr>
                            <th scope="row"><?php
                                echo esc_html_e('Enabled features', 'publishpress'); ?></th>
                            <td>
                                <?php
                                foreach ($publishpress->modules as $mod_name => $mod_data) : ?>

                                    <?php
                                    if ($mod_data->autoload || $mod_data->slug === $this->module->slug) {
                                        continue;
                                    } ?>

                                    <label for="feature-<?php
                                    echo esc_attr($mod_data->slug); ?>">
                                        <input id="feature-<?php
                                        echo esc_attr($mod_data->slug); ?>"
                                               name="publishpress_options[features][<?php
                                               echo esc_attr(
                                                   $mod_data->slug
                                               ); ?>]" <?php
                                        echo ($mod_data->options->enabled == 'on') ? "checked=\"checked\"" : ""; ?>
                                               type="checkbox">
                                        &nbsp;&nbsp;&nbsp;<?php
                                        echo esc_html($mod_data->title); ?>
                                    </label>
                                    <br>
                                <?php
                                endforeach; ?>
                            </td>
                        </tr>
                        </tbody>
                    </table>

                    <?php
                    echo '<input name="publishpress_module_name[]" type="hidden" value="' . esc_attr(
                            $this->module->name
                        ) . '" />'; ?>
                </div>
                <?php
                wp_nonce_field('edit-publishpress-settings');

                submit_button(null, 'primary', 'submit', false); ?>
            </form>
            <?php
        }
    }
}