<?php

namespace Boxzilla\Admin;

use Boxzilla\Plugin;
use Boxzilla\Box;
use Boxzilla\Boxzilla;

class Menu
{
    public function init()
    {
        add_action('admin_head-nav-menus.php', [ $this, 'add_nav_menu_meta_boxes' ]);

        // Include custom items to customizer nav menu settings.
        add_filter('customize_nav_menu_available_item_types', [ $this, 'register_customize_nav_menu_item_types' ]);
        add_filter('customize_nav_menu_available_items', [ $this, 'register_customize_nav_menu_items' ], 10, 4);
    }

    /**
     * Add custom nav meta box.
     *
     * Adapted from http://www.johnmorrisonline.com/how-to-add-a-fully-functional-custom-meta-box-to-wordpress-navigation-menus/.
     */
    public function add_nav_menu_meta_boxes()
    {
        add_meta_box('boxzilla_nav_link', esc_html__('Boxzilla Pop-ups', 'boxzilla'), [ $this, 'nav_menu_links' ], 'nav-menus', 'side', 'low');
    }

    private function get_boxes()
    {
        $q     = new \WP_Query();
        $posts = $q->query(
            [
                'post_type'           => 'boxzilla-box',
                'post_status'         => 'publish',
                'posts_per_page'      => -1,
                'ignore_sticky_posts' => true,
                'no_found_rows'       => true,
            ]
        );
        return $posts;
    }

    /**
     * Output menu links.
     */
    public function nav_menu_links()
    {
        $posts = $this->get_boxes();

        ?>
        <div id="posttype-boxzilla-boxes" class="posttypediv">
            <div id="tabs-panel-boxzilla-boxes" class="tabs-panel tabs-panel-active">
                <ul id="boxzilla-boxes-checklist" class="categorychecklist form-no-clear">
                    <?php
                    $i = -1;
                    foreach ($posts as $key => $post) :
                        ?>
                        <li>
                            <label class="menu-item-title">
                                <input type="checkbox" class="menu-item-checkbox" name="menu-item[<?php echo esc_attr($i); ?>][menu-item-object-id]" value="<?php echo esc_attr($i); ?>" /> <?php echo esc_html($post->post_title); ?>
                            </label>
                            <input type="hidden" class="menu-item-type" name="menu-item[<?php echo esc_attr($i); ?>][menu-item-type]" value="custom" />
                            <input type="hidden" class="menu-item-title" name="menu-item[<?php echo esc_attr($i); ?>][menu-item-title]" value="<?php echo esc_attr($post->post_title); ?>" />
                            <input type="hidden" class="menu-item-url" name="menu-item[<?php echo esc_attr($i); ?>][menu-item-url]" value="<?php echo "#boxzilla-{$post->ID}"; ?>" />
                            <input type="hidden" class="menu-item-classes" name="menu-item[<?php echo esc_attr($i); ?>][menu-item-classes]" />
                        </li>
                        <?php
                        $i--;
                    endforeach;
                    ?>
                </ul>
            </div>
            <p class="button-controls">
                <span class="list-controls">
                </span>
                <span class="add-to-menu">
                    <button type="submit" class="button-secondary submit-add-to-menu right" value="<?php esc_attr_e('Add to menu', 'boxzilla'); ?>" name="add-post-type-menu-item" id="submit-posttype-boxzilla-boxes"><?php esc_html_e('Add to menu', 'boxzilla'); ?></button>
                    <span class="spinner"></span>
                </span>
            </p>
        </div>
        <?php
    }

    /**
     * Register customize new nav menu item types.
     *
     * @since  3.1.0
     * @param  array $item_types Menu item types.
     * @return array
     */
    public function register_customize_nav_menu_item_types($item_types)
    {
        $item_types[] = [
            'title'      => esc_html__('Boxzilla Pop-ups', 'boxzilla'),
            'type_label' => esc_html__('Boxzilla Pop-ups', 'boxzilla'),
            'type'       => 'boxzilla_nav',
            'object'     => 'boxzilla_box',
        ];

        return $item_types;
    }

    /**
     * Register account endpoints to customize nav menu items.
     *
     * @since  3.1.0
     * @param  array   $items  List of nav menu items.
     * @param  string  $type   Nav menu type.
     * @param  string  $object Nav menu object.
     * @param  integer $page   Page number.
     * @return array
     */
    public function register_customize_nav_menu_items($items = [], $type = '', $object = '', $page = 0)
    {
        if ('boxzilla_box' !== $object) {
            return $items;
        }

        // Don't allow pagination since all items are loaded at once.
        if (0 < $page) {
            return $items;
        }

        $boxes = $this->get_boxes();
        foreach ($boxes as $i => $post) {
            $items[] = [
                'id'         => $i,
                'title'      => $post->post_title,
                'type_label' => esc_html__('Custom Link', 'boxzilla'),
                'url'        => "#boxzilla-{$post->ID}",
            ];
        }

        return $items;
    }
}