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<?php
/**
 * Redux Core Class
 *
 * @class   Redux_Core
 * @version 4.0.0
 * @package Redux Framework
 */

defined( 'ABSPATH' ) || exit;

if ( ! class_exists( 'Redux_Core', false ) ) {

/**
	 * Class Redux_Core
	 */
	class Redux_Core {

/**
		 * Class instance.
		 *
		 * @var null|Redux_Core
		 */
		public static ?Redux_Core $instance = null;

/**
		 * Project version
		 *
		 * @var string
		 */
		public static string $version;

/**
		 * Project directory.
		 *
		 * @var string.
		 */
		public static string $dir;

/**
		 * Project URL.
		 *
		 * @var string.
		 */
		public static string $url;

/**
		 * Base directory path.
		 *
		 * @var string
		 */
		public static string $redux_path;

/**
		 * Absolute direction path to WordPress upload directory.
		 *
		 * @var string
		 */
		public static string $upload_dir = '';

/**
		 * Full URL to WordPress upload directory.
		 *
		 * @var null|string
		 */
		public static ?string $upload_url = '';

/**
		 * Set when Redux is run as a plugin.
		 *
		 * @var bool
		 */
		public static bool $is_plugin = true;

/**
		 * Indicated in_theme or in_plugin.
		 *
		 * @var string
		 */
		public static string $installed = '';

/**
		 * Set when Redux is run as a plugin.
		 *
		 * @var bool
		 */
		public static bool $as_plugin = false;

/**
		 * Set when Redux is embedded within a theme.
		 *
		 * @var bool
		 */
		public static bool $in_theme = false;

/**
		 * Pointer to an updated Google fonts array.
		 *
		 * @var array|null
		 */
		public static ?array $updated_google_fonts = array();

/**
		 * List of files calling Redux.
		 *
		 * @var array|null
		 */
		public static ?array $callers = array();

/**
		 * Pointer to _SERVER global.
		 *
		 * @var array|null
		 */
		public static ?array $server = array();

/**
		 * Field folding information for localization.
		 *
		 * @var null|array
		 */
		public static ?array $required = array();

/**
		 * Field child-folding information for localization.
		 *
		 * @var null|array
		 */
		public static ?array $required_child = array();

/**
		 * Array of fields to be folded.
		 *
		 * @var array|null
		 */
		public static ?array $folds = array();

/**
		 * Array of fields that didn't pass the fold dependency test and are hidden.
		 *
		 * @var null|array
		 */
		public static ?array $fields_hidden = array();

/**
		 * Values to generate google font CSS.
		 *
		 * @var null|array
		 */
		public static ?array $typography = array();

/**
		 * Validation ran flag.
		 *
		 * @var bool
		 */
		public static bool $validation_ran = false;

/**
		 * No output flag.
		 *
		 * @var bool
		 */
		public static bool $no_output = false;

/**
		 * Array of fonts used by the panel for localization.
		 *
		 * @var null|array
		 */
		public static ?array $fonts = array();

/**
		 * Array of Google fonts used by the panel for localization.
		 *
		 * @var null|array
		 */
		public static ?array $google_array = array();

/**
		 * Array of various font groups used within the typography field.
		 *
		 * @var null|array
		 */
		public static ?array $font_groups = array();

/**
		 * File system object used for I/O file operations.  Done the WordPress way.
		 *
		 * @var null|object
		 */
		public static ?object $filesystem;

/**
		 * Pointer to the third party fixes class.
		 *
		 * @var Redux_ThirdParty_Fixes
		 */
		public static Redux_ThirdParty_Fixes $third_party_fixes;

/**
		 * Redux Welcome screen object.
		 *
		 * @var Redux_Welcome
		 */
		public static Redux_Welcome $welcome;

/**
		 * Creates instance of class.
		 *
		 * @return Redux_Core
		 * @throws Exception Comment.
		 */
		public static function instance(): ?Redux_Core {
			if ( ! self::$instance ) {
				self::$instance = new self();

self::$instance->includes();
				self::$instance->init();
				self::$instance->hooks();

add_action( 'plugins_loaded', array( 'Redux_Core', 'plugins_loaded' ) );
			}

return self::$instance;
		}

/**
		 * Things to run after pluggable.php had loaded.
		 */
		public static function plugins_loaded() {}

/**
		 * Class init.
		 */
		private function init() {
			self::$server = array(
				'SERVER_SOFTWARE' => '',
				'REMOTE_ADDR'     => Redux_Helpers::is_local_host() ? '127.0.0.1' : '',
				'HTTP_USER_AGENT' => '',
				'HTTP_HOST'       => '',
				'REQUEST_URI'     => '',
			);

// phpcs:disable WordPress.NamingConventions.ValidVariableName.VariableNotSnakeCase
			if ( ! empty( $_SERVER['SERVER_SOFTWARE'] ) ) {
				self::$server['SERVER_SOFTWARE'] = sanitize_text_field( wp_unslash( $_SERVER['SERVER_SOFTWARE'] ) );
			}
			if ( ! empty( $_SERVER['REMOTE_ADDR'] ) ) {
				self::$server['REMOTE_ADDR'] = sanitize_text_field( wp_unslash( $_SERVER['REMOTE_ADDR'] ) );
			}
			if ( ! empty( $_SERVER['HTTP_USER_AGENT'] ) ) {
				self::$server['HTTP_USER_AGENT'] = sanitize_text_field( wp_unslash( $_SERVER['HTTP_USER_AGENT'] ) );
			}
			if ( ! empty( $_SERVER['HTTP_HOST'] ) ) {
				self::$server['HTTP_HOST'] = sanitize_text_field( wp_unslash( $_SERVER['HTTP_HOST'] ) );
			}
			if ( ! empty( $_SERVER['REQUEST_URI'] ) ) {
				self::$server['REQUEST_URI'] = sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) );
			}

// phpcs:enable

self::$dir = trailingslashit( wp_normalize_path( dirname( realpath( __FILE__ ) ) ) );

Redux_Functions_Ex::generator();

if ( defined( 'REDUX_PLUGIN_FILE' ) ) {
				$plugin_info = Redux_Functions_Ex::is_inside_plugin( REDUX_PLUGIN_FILE );
			}

$plugin_info = Redux_Functions_Ex::is_inside_plugin( __FILE__ );

if ( false !== $plugin_info ) {
				self::$installed = class_exists( 'Redux_Framework_Plugin' ) ? 'plugin' : 'in_plugin';
				self::$is_plugin = class_exists( 'Redux_Framework_Plugin' );
				self::$as_plugin = true;
				self::$url       = trailingslashit( dirname( $plugin_info['url'] ) );
			} else {
				$theme_info = Redux_Functions_Ex::is_inside_theme( __FILE__ );
				if ( false !== $theme_info ) {
					self::$url       = trailingslashit( dirname( $theme_info['url'] ) );
					self::$in_theme  = true;
					self::$installed = 'in_theme';
				}
			}

// phpcs:ignore WordPress.NamingConventions.ValidHookName
			self::$url = apply_filters( 'redux/url', self::$url );

// phpcs:ignore WordPress.NamingConventions.ValidHookName
			self::$dir = apply_filters( 'redux/dir', self::$dir );

// phpcs:ignore WordPress.NamingConventions.ValidHookName
			self::$is_plugin = apply_filters( 'redux/is_plugin', self::$is_plugin );

if ( ! function_exists( 'current_time' ) ) {
				require_once ABSPATH . '/wp-includes/functions.php';
			}

$upload_dir       = wp_upload_dir();
			self::$upload_dir = $upload_dir['basedir'] . '/redux/';
			self::$upload_url = str_replace( array( 'https://', 'http://' ), '//', $upload_dir['baseurl'] . '/redux/' );

// phpcs:ignore WordPress.NamingConventions.ValidHookName
			self::$upload_dir = apply_filters( 'redux/upload_dir', self::$upload_dir );

// phpcs:ignore WordPress.NamingConventions.ValidHookName
			self::$upload_url = apply_filters( 'redux/upload_url', self::$upload_url );
		}

/**
		 * Code to execute on a framework __construct.
		 *
		 * @param ReduxFramework $redux Pointer to ReduxFramework object.
		 */
		public static function core_construct( ReduxFramework $redux ) {
			self::$third_party_fixes = new Redux_ThirdParty_Fixes( $redux );

Redux_ThemeCheck::get_instance();
		}

/**
		 * Autoregister run.
		 *
		 * @throws Exception Comment.
		 */
		private function includes() {
			if ( is_admin() ) {
				if ( class_exists( 'Redux_Pro' ) && isset( Redux_Pro::$dir ) ) {
					echo '<div class="error"><p>' . sprintf( esc_html__( 'Redux has detected the Redux Pro plugin is enabled. All featured of Redux Pro are now part of the entire Redux plugin and is no longer required. Please disable the Redux Pro plugin to avoid potential conflicts.', 'redux-framework' ), '<code></code>' ) . '</p></div>';
				}
			}

require_once __DIR__ . '/inc/classes/class-redux-path.php';
			require_once __DIR__ . '/inc/classes/class-redux-functions-ex.php';
			require_once __DIR__ . '/inc/classes/class-redux-helpers.php';
			require_once __DIR__ . '/inc/classes/class-redux-instances.php';

Redux_Functions_Ex::register_class_path( 'Redux', __DIR__ . '/inc/classes' );
			Redux_Functions_Ex::register_class_path( 'Redux', __DIR__ . '/inc/welcome' );

spl_autoload_register( array( $this, 'register_classes' ) );

self::$welcome = new Redux_Welcome();

add_filter( 'debug_information', array( $this, 'add_debug_info' ) );
		}

/**
		 * Add debug info for the WP Site Health screen.
		 *
		 * @param array $debug_info Debug data.
		 *
		 * @return array
		 * @throws ReflectionException Exception.
		 */
		public function add_debug_info( array $debug_info ): array {

// Get browser data.
			if ( ! class_exists( 'ReduxBrowser' ) ) {
				require_once self::$dir . 'inc/lib/browser.php';
			}

$browser = new ReduxBrowser();

$browser_data = array(
				'Agent'    => $browser->getUserAgent(),
				'Browser'  => $browser->getBrowser(),
				'Version'  => $browser->getVersion(),
				'Platform' => $browser->getPlatform(),
			);

// Set Redux dir permission results to Site Health screen.
			$debug_info['wp-filesystem']['fields'][] = array(
				'label' => esc_html__( 'The Redux upload directory', 'redux-framework' ),
				'value' => wp_is_writable( self::$upload_dir ) ? 'Writable' : 'Not writable',
			);

// Set Redux plugin results to Site Health screen.
			$debug_info['redux-framework'] = array(
				'label'       => esc_html__( 'Redux Framework', 'redux-framework' ),
				'description' => esc_html__( 'Debug information specific to Redux Framework.', 'redux-framework' ),
				'fields'      => array(
					'version'        => array(
						'label' => esc_html__( 'Version', 'redux-framework' ),
						'value' => self::$version,
					),
					'installation'   => array(
						'label' => esc_html__( 'Installation', 'redux-framework' ),
						'value' => self::$installed,
					),
					'data directory' => array(
						'label' => esc_html__( 'Data directory', 'redux-framework' ),
						'value' => self::$dir,
					),
					'browser'        => array(
						'label' => esc_html__( 'Browser', 'redux-framework' ),
						'value' => $browser_data,
					),
				),
			);

$redux = Redux::all_instances();

$extensions = array();

if ( ! empty( $redux ) && is_array( $redux ) ) {
				foreach ( $redux as $inst => $data ) {
					Redux::init( $inst );

$inst_name = ucwords( str_replace( array( '_', '-' ), ' ', $inst ) );
					$args      = $data->args;

$ext = Redux::get_extensions( $inst );
					if ( ! empty( $ext ) && is_array( $ext ) ) {
						ksort( $ext );

foreach ( $ext as $name => $arr ) {
							$ver = $arr['version'];

$ex = esc_html( ucwords( str_replace( array( '_', '-' ), ' ', $name ) ) );

$extensions[ $ex ] = esc_html( $ver );
						}
					}

// Output Redux instances.
					$debug_info[ 'redux-instance-' . $inst ] = array(
						// translators: %s = Instance name.
						'label'       => sprintf( esc_html__( 'Redux Instance: %s', 'redux-framework' ), $inst_name ),
						// translators: %s = Instance name w/ HTML.
						'description' => sprintf( esc_html__( 'Debug information for the %s Redux instance.', 'redux-framework' ), '<code>' . $inst . '</code>' ),
						'fields'      => array(
							'opt_name'         => array(
								'label' => esc_html( 'opt_name' ),
								'value' => $args['opt_name'],
							),
							'global_variable'  => array(
								'label' => esc_html( 'global_variable' ),
								'value' => $args['global_variable'],
							),
							'dev_mode'         => array(
								'label' => esc_html( 'dev_mode' ),
								'value' => $args['dev_mode'] ? 'true' : 'false',
							),
							'ajax_save'        => array(
								'label' => esc_html( 'ajax_save' ),
								'value' => $args['ajax_save'] ? 'true' : 'false',
							),
							'page_slug'        => array(
								'label' => esc_html( 'page_slug' ),
								'value' => $args['page_slug'],
							),
							'page_permissions' => array(
								'label' => esc_html( 'page_permissions' ),
								'value' => $args['page_permissions'],
							),
							'menu_type'        => array(
								'label' => esc_html( 'menu_type' ),
								'value' => $args['menu_type'],
							),
							'page_parent'      => array(
								'label' => esc_html( 'page_parent' ),
								'value' => $args['page_parent'],
							),
							'compiler'         => array(
								'label' => esc_html( 'compiler' ),
								'value' => $args['compiler'] ? 'true' : 'false',
							),
							'output'           => array(
								'label' => esc_html( 'output' ),
								'value' => $args['output'] ? 'true' : 'false',
							),
							'output_tag'       => array(
								'label' => esc_html( 'output_tag' ),
								'value' => $args['output_tag'] ? 'true' : 'false',
							),
							'templates_path'   => array(
								'label' => esc_html( 'templates_path' ),
								'value' => $args['templates_path'],
							),
							'extensions'       => array(
								'label' => esc_html( 'extensions' ),
								'value' => $extensions,
							),
						),
					);
				}
			}

return $debug_info;
		}

/**
		 * Register callback for autoload.
		 *
		 * @param string $class_name name of class.
		 */
		public function register_classes( string $class_name ) {
			$class_name_test = self::strtolower( $class_name );

if ( strpos( $class_name_test, 'redux' ) === false ) {
				return;
			}

if ( ! class_exists( 'Redux_Functions_Ex' ) ) {
				require_once Redux_Path::get_path( '/inc/classes/class-redux-functions-ex.php' );
			}

if ( ! class_exists( $class_name ) ) {
				// Backward compatibility for extensions sucks!
				if ( 'Redux_Instances' === $class_name ) {
					require_once Redux_Path::get_path( '/inc/classes/class-redux-instances.php' );
					require_once Redux_Path::get_path( '/inc/lib/redux-instances.php' );

return;
				}

// Load Redux APIs.
				if ( 'Redux' === $class_name ) {
					require_once Redux_Path::get_path( '/inc/classes/class-redux-api.php' );

return;
				}

// Redux extra theme checks.
				if ( 'Redux_ThemeCheck' === $class_name ) {
					require_once Redux_Path::get_path( '/inc/themecheck/class-redux-themecheck.php' );

return;
				}

if ( 'Redux_Welcome' === $class_name ) {
					require_once Redux_Path::get_path( '/inc/welcome/class-redux-welcome.php' );

return;
				}

$mappings = array(
					'ReduxFrameworkInstances'  => 'Redux_Instances',
					'reduxCorePanel'           => 'Redux_Panel',
					'reduxCoreEnqueue'         => 'Redux_Enqueue',
					'Redux_Abstract_Extension' => 'Redux_Extension_Abstract',
				);
				$alias    = false;
				if ( isset( $mappings[ $class_name ] ) ) {
					$alias      = $class_name;
					$class_name = $mappings[ $class_name ];
				}

// Everything else.
				$file = 'class.' . $class_name_test . '.php';

$class_path = Redux_Path::get_path( '/inc/classes/' . $file );

if ( ! file_exists( $class_path ) ) {
					$class_file_name = str_replace( '_', '-', $class_name );
					$file            = 'class-' . $class_name_test . '.php';
					$class_path      = Redux_Path::get_path( '/inc/classes/' . $file );
				}

if ( file_exists( $class_path ) && ! class_exists( $class_name ) ) {
					require_once $class_path;
				}
				if ( class_exists( $class_name ) && ! empty( $alias ) && ! class_exists( $alias ) ) {
					class_alias( $class_name, $alias );
				}
			}

// phpcs:ignore WordPress.NamingConventions.ValidHookName
			do_action( 'redux/core/includes', $this );
		}

/**
		 * Hooks to run on instance creation.
		 */
		private function hooks() {
			// phpcs:ignore WordPress.NamingConventions.ValidHookName
			do_action( 'redux/core/hooks', $this );
		}

/**
		 * Action to run on WordPress heartbeat.
		 *
		 * @return bool
		 */
		public static function is_heartbeat(): bool {
			// Disregard WP AJAX 'heartbeat' call.  Why waste resources?
			if ( isset( $_POST ) && isset( $_POST['_nonce'] ) && wp_verify_nonce( sanitize_key( wp_unslash( $_POST['_nonce'] ) ), 'heartbeat-nonce' ) ) {

if ( isset( $_POST['action'] ) && 'heartbeat' === sanitize_text_field( wp_unslash( $_POST['action'] ) ) ) {

// Hook, for purists.
					if ( has_action( 'redux/ajax/heartbeat' ) ) {
						// phpcs:ignore WordPress.NamingConventions.ValidHookName
						do_action( 'redux/ajax/heartbeat' );
					}

return true;
				}

return false;
			}

// Buh bye!
			return false;
		}

/**
		 * Helper method to check for mb_strtolower or to use the standard strtolower.
		 *
		 * @param string|null $str String to make lowercase.
		 *
		 * @return string|null
		 */
		public static function strtolower( ?string $str ): string {
			if ( function_exists( 'mb_strtolower' ) && function_exists( 'mb_detect_encoding' ) ) {
				return mb_strtolower( $str, mb_detect_encoding( $str ) );
			} else {
				return strtolower( $str );
			}
		}
	}

/*
	 * Backwards comparability alias
	 */
	class_alias( 'Redux_Core', 'redux-core' );
}