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<?php
namespace Crocoblock_Wizard\Base;

use Crocoblock_Wizard\Plugin as Plugin;

// If this file is called directly, abort.
if ( ! defined( 'WPINC' ) ) {
	die;
}

abstract class Module {

abstract public function get_slug();

public function __construct() {

$this->init();

add_action(
			'crocoblock-wizard/dashboard/before-enqueue-assets/' . $this->get_slug(),
			array( $this, 'assets' )
		);

add_action( 'wp_ajax_crocoblock-wizard/' . $this->get_slug(), array( $this, 'process_ajax' ) );

}

/**
	 * Initialize module-specific parts
	 *
	 * @return [type] [description]
	 */
	public function init() {}

/**
	 * Register module assets
	 *
	 * @return [type] [description]
	 */
	public function assets() {

$this->enqueue_module_assets();

add_filter( 'crocoblock-wizard/dashboard/js-page-config', array( $this, 'page_config' ), 10, 2 );
		add_filter( 'crocoblock-wizard/dashboard/js-page-templates', array( $this, 'page_templates' ), 10, 2 );

}

/**
	 * Check if currently page
	 * @return boolean [description]
	 */
	public function is_module_page() {

if ( ! Plugin::instance()->dashboard->is_dashboard_page() ) {
			return false;
		}

if ( ! empty( $_GET['sub'] ) && $this->get_slug() === $_GET['sub'] ) {
			return true;
		} else {
			return false;
		}

}

/**
	 * Process ajax
	 *
	 * @return [type] [description]
	 */
	public function process_ajax() {

$handler = isset( $_REQUEST['handler'] ) ? $_REQUEST['handler'] : false;

if ( ! $handler || ! is_callable( array( $this, $handler ) ) ) {
			return;
		}

if ( ! current_user_can( 'manage_options' ) ) {
			wp_send_json_error( array(
				'message' => __( 'You are not allowed to access this', 'crocoblock-wizard' ),
			) );
		}

$nonce = isset( $_REQUEST['nonce'] ) ? esc_attr( $_REQUEST['nonce'] ) : false;

if ( ! $nonce || ! wp_verify_nonce( $nonce, Plugin::instance()->dashboard->page_slug ) ) {
			wp_send_json_error( array(
				'message' => __( 'Nonce verfictaion failed', 'crocoblock-wizard' ),
			) );
		}

call_user_func( array( $this, $handler ) );

}

/**
	 * Enqueue module-specific assets
	 *
	 * @return void
	 */
	public function enqueue_module_assets() {}

/**
	 * Modify page config
	 *
	 * @param  [type] $config [description]
	 * @return [type]         [description]
	 */
	public function page_config( $config = array(), $subpage = '' ) {
		return $config;
	}

/**
	 * Add page templates
	 *
	 * @param  [type] $config [description]
	 * @return [type]         [description]
	 */
	public function page_templates( $templates = array(), $subpage = '' ) {
		return $templates;
	}

/**
	 * Returns link to current page
	 *
	 * @return [type] [description]
	 */
	public function get_page_link() {
		return Plugin::instance()->dashboard->page_url( $this->get_slug() );
	}

}