<?php



    /**

     * Redux Framework Instance Container Class

     * Automatically captures and stores all instances

     * of ReduxFramework at instantiation.

     *

     * @package     Redux_Framework

     * @subpackage  Core

     */

    class ReduxFrameworkInstances {



        /**

         * ReduxFrameworkInstances

         *

         * @var object

         */

        private static $instance;



        /**

         * ReduxFramework instances

         *

         * @var array

         */

        private static $instances;



        /**

         * Get Instance

         * Get ReduxFrameworkInstances instance

         * OR an instance of ReduxFramework by [opt_name]

         *

         * @param  string $opt_name the defined opt_name

         *

         * @return object                class instance

         */

        public static function get_instance( $opt_name = false ) {



            if ( is_null( self::$instance ) ) {

                self::$instance = new self();

            }



            if ( $opt_name && ! empty( self::$instances[ $opt_name ] ) ) {

                return self::$instances[ $opt_name ];

            }



            return self::$instance;

        }



        /**

         * Get all instantiated ReduxFramework instances (so far)

         *

         * @return [type] [description]

         */

        public static function get_all_instances() {

            return self::$instances;

        }



        private function __construct() {



            add_action( 'redux/construct', array( $this, 'capture' ), 5, 1 );



            $hash = md5( trailingslashit( network_site_url() ) . '-redux' );

            add_action( 'wp_ajax_nopriv_' . $hash, array( $this, 'tracking_arg' ) );

            add_action( 'wp_ajax_' . $hash, array( $this, 'tracking_arg' ) );



            if (!class_exists('Redux_Tracking') || !method_exists('Redux_Tracking', 'trackingObject')) {

                $hash = md5( md5( AUTH_KEY . SECURE_AUTH_KEY . '-redux' ) . '-support' );

                add_action( 'wp_ajax_nopriv_' . $hash, array( $this, 'support_args' ) );

                add_action( 'wp_ajax_' . $hash, array( $this, 'support_args' ) );

            }





        }



        function tracking_arg() {

            echo md5( AUTH_KEY . SECURE_AUTH_KEY . '-redux' );

            die();

        }



        function support_args() {



            $this->options             = get_option( 'redux-framework-tracking' );

            $this->options['dev_mode'] = false;



            if ( ! isset( $this->options['hash'] ) || ! $this->options['hash'] || empty( $this->options['hash'] ) ) {

                $this->options['hash'] = md5( network_site_url() . '-' . $_SERVER['REMOTE_ADDR'] );

                update_option( 'redux-framework-tracking', $this->options );

            }



            if ( isset( $_GET['redux_framework_disable_tracking'] ) && ! empty( $_GET['redux_framework_disable_tracking'] ) ) {

                $this->options['allow_tracking'] = false;

                update_option( 'redux-framework-tracking', $this->options );

            }



            if ( isset( $_GET['redux_framework_enable_tracking'] ) && ! empty( $_GET['redux_framework_enable_tracking'] ) ) {

                $this->options['allow_tracking'] = true;

                update_option( 'redux-framework-tracking', $this->options );

            }



            header( "Expires: Mon, 26 Jul 1997 05:00:00 GMT" );

            header( "Last-Modified: " . gmdate( "D, d M Y H:i:s" ) . "GMT" );

            header( 'Expires: Sat, 26 Jul 1997 05:00:00 GMT' );

            header( 'Cache-Control: no-store, no-cache, must-revalidate' );

            header( 'Cache-Control: post-check=0, pre-check=0', false );

            header( 'Pragma: no-cache' );

            $instances = ReduxFrameworkInstances::get_all_instances();



            if ( isset( $_REQUEST['i'] ) && ! empty( $_REQUEST['i'] ) ) {

                if ( is_array( $instances ) && ! empty( $instances ) ) {

                    foreach ( $instances as $opt_name => $data ) {

                        if ( md5( $opt_name . '-debug' ) == $_REQUEST['i'] ) {

                            $array = $instances[ $opt_name ];

                        }

                        if ($data->args['dev_mode']) {

                            $this->options['dev_mode'] = $data->args['dev_mode'];

                        }

                    }

                }

                if ( isset( $array ) ) {

                    if ( isset( $array->extensions ) && is_array( $array->extensions ) && ! empty( $array->extensions ) ) {

                        foreach ( $array->extensions as $key => $extension ) {

                            if ( isset( $extension->$version ) ) {

                                $array->extensions[ $key ] = $extension->$version;

                            } else {

                                $array->extensions[ $key ] = true;

                            }

                        }

                    }

                    if ( isset( $array->import_export ) ) {

                        unset( $array->import_export );

                    }

                    if ( isset( $array->debug ) ) {

                        unset( $array->debug );

                    }

                } else {

                    die();

                }



            } else {

                $array = Redux_Helpers::trackingObject();

                if ( is_array( $instances ) && ! empty( $instances ) ) {

                    $array['instances'] = array();

                    foreach ( $instances as $opt_name => $data ) {

                        $array['instances'][] = $opt_name;

                    }

                }

                $array['key'] = md5( AUTH_KEY . SECURE_AUTH_KEY );

            }



            echo @json_encode( $array, true );

            die();

        }



        function capture( $ReduxFramework ) {

            $this->store( $ReduxFramework );

        }



        private function store( $ReduxFramework ) {

            if ( $ReduxFramework instanceof ReduxFramework ) {

                $key                     = $ReduxFramework->args['opt_name'];

                self::$instances[ $key ] = $ReduxFramework;

            }

        }

    }

