<?php

/**
 * Base class for all Pages.
 *
 * @since   5.5.4
 *
 * @author  Sudar
 *
 * @package BulkDelete\Base\Page
 */
defined('ABSPATH') || exit; // Exit if accessed directly

/**
 * Base class for Pages.
 *
 * @abstract
 *
 * @since 5.5.4
 */
abstract class BD_Base_Page
{ //phpcs:ignore
    /**
     * @var string Page Slug.
     */
    protected $page_slug;

    /**
     * @var string Menu action.
     */
    protected $menu_action = 'bd_after_primary_menus';

    /**
     * @var string Minimum capability needed for viewing this page.
     */
    protected $capability = 'manage_options';

	// TODO: Remove property after confirming on `class-bd-settings-page.php` file.
    /**
     * @var bool Whether sidebar is needed or not.
     */
    protected $render_sidebar = false;

    /**
     * @var string The screen variable for this page.
     */
    protected $screen;

    /**
     * @var array Labels used in this page.
     */
    protected $label = array();

    /**
     * @var array Messages shown to the user.
     */
    protected $messages = array();

    /**
     * @var array Actions used in this page.
     */
    protected $actions = array();

    /**
     * Initialize and setup variables.
     *
     * @since 5.5.4
     * @abstract
     *
     * @return void
     */
    abstract protected function initialize();

    /**
     * Render body content.
     *
     * @since 5.5.4
     * @abstract
     *
     * @return void
     */
    abstract protected function render_body();

    /**
     * Use `factory()` method to create instance of this class.
     * Don't create instances directly.
     *
     * @since 5.5.4
     * @see factory()
     */
    public function __construct()
    {
        $this->setup();
    }

    /**
     * Setup the module.
     *
     * @since 5.5.4
     */
    protected function setup()
    {
        $this->initialize();
        $this->setup_hooks();
    }

    /**
     * Setup hooks.
     *
     * @since 5.5.4
     */
    protected function setup_hooks()
    {
        add_action($this->menu_action, array($this, 'add_menu'));
        add_action("bd_admin_footer_for_{$this->page_slug}", array($this, 'modify_admin_footer'));

        add_filter('bd_action_nonce_check', array($this, 'nonce_check'), 10, 2);
        add_filter('bd_admin_help_tabs', array($this, 'render_help_tab'), 10, 2);
    }

    /**
     * Add menu.
     *
     * @since 5.5.4
     */
    public function add_menu()
    {
        $this->screen = add_submenu_page(
            Bulk_Delete::POSTS_PAGE_SLUG,
            $this->label['page_title'],
            $this->label['menu_title'],
            $this->capability,
            $this->page_slug,
            array($this, 'render_page')
        );
    }

    

    /**
     * Check for nonce before executing the action.
     *
     * @since 5.5.4
     *
     * @param bool   $result The current result.
     * @param string $action Action name.
     */
    public function nonce_check($result, $action)
    {
        if (in_array($action, $this->actions)) {
            if (check_admin_referer("bd-{$this->page_slug}", "bd-{$this->page_slug}-nonce")) {
                return true;
            }
        }

        return $result;
    }

    /**
     * Modify help tabs for the current page.
     *
     * @since 5.5.4
     *
     * @param array  $help_tabs Current list of help tabs.
     * @param string $screen    Current screen name.
     *
     * @return array Modified list of help tabs.
     */
    public function render_help_tab($help_tabs, $screen)
    {
        if ($this->screen == $screen) {
            $help_tabs = $this->add_help_tab($help_tabs);
        }

        return $help_tabs;
    }

    /**
     * Add help tabs.
     * Help tabs can be added by overriding this function in the child class.
     *
     * @since 5.5.4
     *
     * @param array $help_tabs Current list of help tabs.
     *
     * @return array List of help tabs.
     */
    protected function add_help_tab($help_tabs)
    {
        return $help_tabs;
    }

    /**
     * Render the page.
     *
     * @since 5.5.4
     */
    public function render_page()
    {
?>
        <div class="wrap">
            <h2><?php echo esc_html($this->label['page_title']); ?></h2>
            <?php settings_errors(); ?>

            <form method="post">
                <?php $this->render_nonce_fields(); ?>
                <div class="bulkwp-body-wrapper">
                    <div id="poststuff">
                        <div id="post-body" class="metabox-holder columns-1">

                            <?php $this->render_header(); ?>

                            <div id="postbox-container-2" class="postbox-container">
                                <?php $this->render_body(); ?>
                            </div> <!-- #postbox-container-2 -->

                        </div> <!-- #post-body -->
                    </div><!-- #poststuff -->
                </div>
                <div class="bulkwp-sidebar-wrapper">
                    <?php bd_wp_kses_wf(Bulk_Delete::sidebar()); ?>
                </div>
            </form>
        </div><!-- .wrap -->
    <?php
        $this->render_footer();
    }

    /**
     * Print nonce fields.
     *
     * @since 5.5.4
     */
    protected function render_nonce_fields()
    {
        wp_nonce_field("bd-{$this->page_slug}", "bd-{$this->page_slug}-nonce");
    }

    /**
     * Render header for the page.
     *
     * If sidebar is enabled, then it is rendered as well.
     *
     * @since 5.5.4
     */
    protected function render_header()
    {
    ?>
        <div class="notice notice-warning">
            <p><strong><?php echo esc_html($this->messages['warning_message']); ?></strong></p>
        </div>
<?php
    }

    /**
     * Render footer.
     *
     * @since 5.5.4
     */
    protected function render_footer()
    {
        /**
         * Runs just before displaying the footer text in the admin page.
         *
         * This action is primarily for adding extra content in the footer of admin page.
         *
         * @since 5.5.4
         */
        do_action("bd_admin_footer_for_{$this->page_slug}"); //phpcs:ignore
    }

    /**
     * Modify admin footer in Bulk Delete plugin pages.
     */
    public function modify_admin_footer()
    {
        add_filter('admin_footer_text', 'bd_add_rating_link');
    }

    /**
     * Getter for screen.
     *
     * @return string Current value of screen
     */
    public function get_screen()
    {
        return $this->screen;
    }

    /**
     * Getter for page_slug.
     *
     * @return string Current value of page_slug
     */
    public function get_page_slug()
    {
        return $this->page_slug;
    }
}
?>