array( 
					'label' => __( 'Add custom data to your documents', 'woocommerce-pdf-invoices-packing-slips' ),
					'description' => sprintf(
						'%s <a href="%s" target="_blank">%s</a>', 
						__( 'Display all sorts of data and apply conditional logic using Custom Blocks.', 'woocommerce-pdf-invoices-packing-slips' ), 
						'https://docs.wpovernight.com/woocommerce-pdf-invoices-packing-slips/using-custom-blocks/', 
						__( 'Learn more', 'woocommerce-pdf-invoices-packing-slips' ) 
					),
					'extensions' => ['templates', 'bundle'],
				),
				array( 
					'label' => __( 'Additional PDF templates', 'woocommerce-pdf-invoices-packing-slips' ),
					'description' => __( 'Make use of our Business or Modern template designs.', 'woocommerce-pdf-invoices-packing-slips' ),
					'extensions' => ['templates', 'bundle'],
				),
				array( 
					'label' => __( 'Add styling', 'woocommerce-pdf-invoices-packing-slips' ),
					'description' => __( 'Easily change the look and feel of your documents by adding some custom CSS.', 'woocommerce-pdf-invoices-packing-slips' ),
					'extensions' => ['templates', 'bundle'],
				),
			);
			
			$extension_license_infos = $this->get_extension_license_infos();

			include( WPO_WCPDF()->plugin_path() . '/includes/views/upgrade-table.php' );
		}
	}
	
	/**
	 * Check if a PDF extension is enabled
	 *
	 * @param  string  $extension  can be 'pro' or 'templates'
	 * @return boolean
	 */
	public function extension_is_enabled( $extension ) {
		$is_enabled = false;
		
		if ( ! empty( $extension ) || ! in_array( $extension, [ 'pro', 'templates' ] ) ) {
			$extension_main_function = "WPO_WCPDF_".ucfirst( $extension );
			if ( function_exists( $extension_main_function ) ) {
				$is_enabled = true;
			}
		}
		
		return $is_enabled;
	}
	
	/**
	 * Get PDF extensions license info
	 *
	 * @return array
	 */
	public function get_extension_license_infos() {
		$extensions          = [ 'pro', 'templates' ];
		$license_info        = [];
		$bundle_upgrade_link = '';
		$license_status      = 'inactive';
		
		foreach ( $extensions as $extension ) {
			$license_info[$extension]   = [];
			$args                       = [];
			$request                    = null;
			$license_key                = '';
			$sidekick                   = false;
			$updater                    = null;
			
			if ( $this->extension_is_enabled( $extension ) ) {
				$extension_main_function = "WPO_WCPDF_".ucfirst( $extension );
				$updater                 = $extension_main_function()->updater;
				
				if ( $extension == 'templates' && version_compare( $extension_main_function()->version, '2.20.0', '<=' ) ) { // 'updater' property had 'private' visibility
					continue;
				}
				
				if ( is_null( $updater ) ) {
					continue;
				}
				
				// built-in updater
				if ( is_callable( [ $updater, 'get_license_key' ] ) ) {
					$license_key = $updater->get_license_key();
				// sidekick (legacy)
				} elseif ( property_exists( $updater, 'license_key' ) ) {
					$license_slug     = "wpo_wcpdf_{$extension}_license";
					$wpo_license_keys = get_option( 'wpocore_settings', array() );
					$license_key      = isset( $wpo_license_keys[$license_slug] ) ? $wpo_license_keys[$license_slug] : $license_key;
					$sidekick         = true;
				}
				
				if ( ! empty( $license_key ) ) {
					$args['edd_action']  = 'check_license';
					$args['license_key'] = trim( $license_key );
					
					// legacy
					if ( $sidekick ) {
						if ( ! class_exists( 'WPO_Update_Helper' ) ) {
							include_once( $extension_main_function()->plugin_path() . '/updater/update-helper.php' );
						}
						
						$item_name = 'PDF Invoices & Packing Slips for WooCommerce - ';
						$file      = $extension_main_function()->plugin_path();
						$version   = $extension_main_function()->version;
						$author    = 'WP Overnight';
						
						switch ( $extension ) {
							case 'pro':
								$item_name = "{$item_name}Professional";
								break;
							case 'templates':
								$item_name = "{$item_name}Premium Templates";
								break;
						}
						
						$updater = new \WPO_Update_Helper( $item_name, $file, $license_slug, $version, $author );
					}
					
				} else {
					continue;
				}
				
				if ( $updater && is_callable( [ $updater, 'remote_license_actions' ] ) && ! empty( $args ) ) {
					$request = $updater->remote_license_actions( $args );
					if ( is_object( $request ) && isset( $request->license ) ) {
						$license_info[$extension]['status'] = $license_status = $request->license;
						
						if ( empty( $bundle_upgrade_link ) && ! empty( $request->bundle_upgrade ) && is_string( $request->bundle_upgrade ) ) {
							$bundle_upgrade_link = $request->bundle_upgrade; // https://github.com/wpovernight/woocommerce-pdf-invoices-packing-slips/pull/503#issue-1678203436
						}
					}
				}
			}	
		}
		
		$extensions[] = 'bundle';
		foreach ( $extensions as $extension ) {
			if ( ! empty( $bundle_upgrade_link ) && $license_status == 'valid' ) {
				$license_info[$extension]['url'] = $bundle_upgrade_link;
			} else {
				switch ( $extension ) {
					case 'pro':
						$license_info[$extension]['url'] = 'https://wpovernight.com/downloads/woocommerce-pdf-invoices-packing-slips-professional/';
						break;
					case 'templates':
						$license_info[$extension]['url'] = 'https://wpovernight.com/downloads/woocommerce-pdf-invoices-packing-slips-premium-templates/';
						break;
					case 'bundle':
						$license_info[$extension]['url'] = 'https://wpovernight.com/downloads/woocommerce-pdf-invoices-packing-slips-bundle/';
						break;
				}
			}
		}
		
		return $license_info;
	}
	
}

endif; // class_exists