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<?php
namespace PowerpackElements;

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly
}

class Extensions_Manager {

const DISPLAY_CONDITIONS    = 'display-conditions';
	const BACKGROUND_EFFECTS    = 'background-effects';

private $_extensions = null;

public $available_extensions = [
		self::DISPLAY_CONDITIONS,
		self::BACKGROUND_EFFECTS,
	];

/**
	 * Loops though available extensions and registers them
	 *
	 * @since 1.4.7
	 *
	 * @access public
	 * @return void
	 */
	public function register_extensions() {

$this->_extensions = [];

$available_extensions = $this->available_extensions;

foreach ( $available_extensions as $index => $extension_id ) {
			$extension_filename = str_replace( '_', '-', $extension_id );
			$extension_name = str_replace( '-', '_', $extension_id );

$extension_filename = POWERPACK_ELEMENTS_PATH . "extensions/{$extension_filename}.php";

require $extension_filename;

$class_name = str_replace( '-', '_', $extension_id );

$class_name = __NAMESPACE__ . '\Extensions\Extension_' . $class_name;

if ( ! $this->is_available( $extension_name ) ) {
				unset( $this->available_extensions[ $index ] );
			}

// Skip extension if it's disabled in admin settings
			if ( $this->is_extension_disabled( $extension_name ) ) {
				continue;
			}

$this->register_extension( $extension_id, new $class_name() );
		}

do_action( 'powerpack_elements/extensions/extensions_registered', $this );
	}

/**
	 * Check if extension is enabled through admin settings
	 *
	 * @since 1.4.8.2
	 *
	 * @access public
	 * @return bool
	 */
	public function is_extension_disabled( $extension = '' ) {
		$enabled_extensions = pp_get_enabled_extensions();

if ( ! is_array( $enabled_extensions ) ) {
			$enabled_extensions = array();
		}

$extension = str_replace( '_', '-', $extension );

$extension_name = 'pp-' . $extension;

if ( in_array( $extension_name, $enabled_extensions ) || isset( $enabled_extensions[ $extension_name ] ) ) {
			return false;
		}

return true;
	}

/**
	 * Check if extension is disabled by default
	 *
	 * @since 1.4.7
	 *
	 * @access public
	 * @return bool
	 */
	public function is_default_disabled( $extension_name ) {
		if ( ! $extension_name ) {
			return false;
		}

$class_name = str_replace( '-', '_', $extension_name );
		$class_name = 'PowerpackElements\Extensions\Extension_' . ucwords( $class_name );

if ( $class_name::is_default_disabled() ) {
			return true;
		}

return false;
	}

/**
	 * Check if extension is available at all
	 *
	 * @since 1.4.7
	 *
	 * @access public
	 * @return bool
	 */
	public function is_available( $extension_name ) {
		if ( ! $extension_name ) {
			return false;
		}

$class_name = str_replace( '-', '_', $extension_name );
		$class_name = 'PowerpackElements\Extensions\Extension_' . ucwords( $class_name );

if ( $class_name::requires_elementor_pro() && ! is_elementor_pro_active() ) {
			return false;
		}

return true;

}

/**
	 * @since 1.4.7
	 *
	 * @param $extension_id
	 * @param Extension_Base $extension_instance
	 */
	public function register_extension( $extension_id, Base\Extension_Base $extension_instance ) {
		$this->_extensions[ $extension_id ] = $extension_instance;
	}

/**
	 * @since 1.4.7
	 *
	 * @param $extension_id
	 * @return bool
	 */
	public function unregister_extension( $extension_id ) {
		if ( ! isset( $this->_extensions[ $extension_id ] ) ) {
			return false;
		}

unset( $this->_extensions[ $extension_id ] );

return true;
	}

/**
	 * @since 1.4.7
	 *
	 * @return Extension_Base[]
	 */
	public function get_extensions() {
		if ( null === $this->_extensions ) {
			$this->register_extensions();
		}

return $this->_extensions;
	}

/**
	 * @since 1.4.7
	 *
	 * @param $extension_id
	 * @return bool|\PowerpackElements\Extension_Base
	 */
	public function get_extension( $extension_id ) {
		$extensions = $this->get_extensions();

return isset( $extensions[ $extension_id ] ) ? $extensions[ $extension_id ] : false;
	}

private function require_files() {
		require POWERPACK_ELEMENTS_PATH . 'base/extension-base.php';
	}

public function __construct() {
		$this->require_files();
		$this->register_extensions();
	}
}