<?php



    if ( ! defined( 'ABSPATH' ) ) {

        exit;

    }



    if ( ! class_exists( 'reduxCorePanel' ) ) {

        /**

         * Class reduxCorePanel

         */

        class reduxCorePanel {

            /**

             * @var null

             */

            public $parent = null;

            /**

             * @var null|string

             */

            public $template_path = null;

            /**

             * @var null

             */

            public $original_path = null;



            /**

             * Sets the path from the arg or via filter. Also calls the panel template function.

             *

             * @param $parent

             */

            public function __construct( $parent ) {

                $this->parent             = $parent;

                Redux_Functions::$_parent = $parent;

                $this->template_path      = $this->original_path = ReduxFramework::$_dir . 'templates/panel/';

                if ( ! empty( $this->parent->args['templates_path'] ) ) {

                    $this->template_path = trailingslashit( $this->parent->args['templates_path'] );

                }

                $this->template_path = trailingslashit( apply_filters( "redux/{$this->parent->args['opt_name']}/panel/templates_path", $this->template_path ) );

            }



            public function init() {

                $this->panel_template();

            }





            /**

             * Loads the panel templates where needed and provides the container for Redux

             */

            private function panel_template() {



                /**

                 * action 'redux/{opt_name}/panel/before'

                 */

                do_action( "redux/{$this->parent->args['opt_name']}/panel/before" );



                echo '<div class="wrap"><h2></h2></div>'; // Stupid hack for Wordpress alerts and warnings



                echo '<div class="clear"></div>';

                echo '<div class="wrap">';



                // Do we support JS?

                echo '<noscript><div class="no-js">' . 'Warning- This options panel will not work properly without javascript!' . '</div></noscript>';



                // Security is vital!

                echo '<input type="hidden" id="ajaxsecurity" name="security" value="' . wp_create_nonce( 'redux_ajax_nonce' ) . '" />';



                /**

                 * action 'redux-page-before-form-{opt_name}'

                 *

                 * @deprecated

                 */

                do_action( "redux-page-before-form-{$this->parent->args['opt_name']}" ); // Remove



                /**

                 * action 'redux/page/{opt_name}/form/before'

                 *

                 * @param object $this ReduxFramework

                 */

                do_action( "redux/page/{$this->parent->args['opt_name']}/form/before", $this );



                $this->get_template( 'container.tpl.php' );



                /**

                 * action 'redux-page-after-form-{opt_name}'

                 *

                 * @deprecated

                 */

                do_action( "redux-page-after-form-{$this->parent->args['opt_name']}" ); // REMOVE



                /**

                 * action 'redux/page/{opt_name}/form/after'

                 *

                 * @param object $this ReduxFramework

                 */

                do_action( "redux/page/{$this->parent->args['opt_name']}/form/after", $this );

                echo '<div class="clear"></div>';

                echo '</div>';



                /**

                 * action 'redux/{opt_name}/panel/after'

                 */

                do_action( "redux/{$this->parent->args['opt_name']}/panel/after" );



            }





            /**

             * Calls the various notification bars and sets the appropriate templates.

             */

            function notification_bar() {



                if ( isset( $this->parent->transients['last_save_mode'] ) ) {



                    if ( $this->parent->transients['last_save_mode'] == "import" ) {

                        /**

                         * action 'redux/options/{opt_name}/import'

                         *

                         * @param object $this ReduxFramework

                         */

                        do_action( "redux/options/{$this->parent->args['opt_name']}/import", $this, $this->parent->transients['changed_values'] );



                        /**

                         * filter 'redux-imported-text-{opt_name}'

                         *

                         * @param string  translated "settings imported" text

                         */

                        echo '<div class="admin-notice notice-blue saved_notice"><strong>' . apply_filters( "redux-imported-text-{$this->parent->args['opt_name']}", 'Settings Imported!' ) . '</strong></div>';

                        //exit();

                    } else if ( $this->parent->transients['last_save_mode'] == "defaults" ) {

                        /**

                         * action 'redux/options/{opt_name}/reset'

                         *

                         * @param object $this ReduxFramework

                         */

                        do_action( "redux/options/{$this->parent->args['opt_name']}/reset", $this );



                        /**

                         * filter 'redux-defaults-text-{opt_name}'

                         *

                         * @param string  translated "settings imported" text

                         */

                        echo '<div class="saved_notice admin-notice notice-yellow"><strong>' . apply_filters( "redux-defaults-text-{$this->parent->args['opt_name']}", 'All Defaults Restored!' ) . '</strong></div>';

                    } else if ( $this->parent->transients['last_save_mode'] == "defaults_section" ) {

                        /**

                         * action 'redux/options/{opt_name}/section/reset'

                         *

                         * @param object $this ReduxFramework

                         */

                        do_action( "redux/options/{$this->parent->args['opt_name']}/section/reset", $this );



                        /**

                         * filter 'redux-defaults-section-text-{opt_name}'

                         *

                         * @param string  translated "settings imported" text

                         */

                        echo '<div class="saved_notice admin-notice notice-yellow"><strong>' . apply_filters( "redux-defaults-section-text-{$this->parent->args['opt_name']}", 'Section Defaults Restored!' ) . '</strong></div>';

                    } else if ( $this->parent->transients['last_save_mode'] == "normal" ) {

                        /**

                         * action 'redux/options/{opt_name}/saved'

                         *

                         * @param mixed $value set/saved option value

                         */

                        do_action( "redux/options/{$this->parent->args['opt_name']}/saved", $this->parent->options, $this->parent->transients['changed_values'] );



                        /**

                         * filter 'redux-saved-text-{opt_name}'

                         *

                         * @param string translated "settings saved" text

                         */

                        echo '<div class="saved_notice admin-notice notice-green"><strong>' . apply_filters( "redux-saved-text-{$this->parent->args['opt_name']}", 'Settings Saved!' ) . '</strong></div>';

                    }



                    unset( $this->parent->transients['last_save_mode'] );

                    //$this->parent->transients['last_save_mode'] = 'remove';

                    $this->parent->set_transients();

                }



                /**

                 * action 'redux/options/{opt_name}/settings/changes'

                 *

                 * @param mixed $value set/saved option value

                 */

                do_action( "redux/options/{$this->parent->args['opt_name']}/settings/change", $this->parent->options, $this->parent->transients['changed_values'] );



                /**

                 * filter 'redux-changed-text-{opt_name}'

                 *

                 * @param string translated "settings have changed" text

                 */

                echo '<div class="redux-save-warn notice-yellow"><strong>' . apply_filters( "redux-changed-text-{$this->parent->args['opt_name']}", 'Settings have changed, you should save them!' ) . '</strong></div>';



                /**

                 * action 'redux/options/{opt_name}/errors'

                 *

                 * @param array $this ->errors error information

                 */

                do_action( "redux/options/{$this->parent->args['opt_name']}/errors", $this->parent->errors );

                echo '<div class="redux-field-errors notice-red"><strong><span></span> ' . 'error(s) were found!' . '</strong></div>';



                /**

                 * action 'redux/options/{opt_name}/warnings'

                 *

                 * @param array $this ->warnings warning information

                 */

                do_action( "redux/options/{$this->parent->args['opt_name']}/warnings", $this->parent->warnings );

                echo '<div class="redux-field-warnings notice-yellow"><strong><span></span> ' . 'warning(s) were found!' . '</strong></div>';



            }



            /**

             * Used to intitialize the settings fields for this panel. Required for saving and redirect.

             */

            function init_settings_fields() {

                // Must run or the page won't redirect properly

                settings_fields( "{$this->parent->args['opt_name']}_group" );

            }





            /**

             * Used to select the proper template. If it doesn't exist in the path, then the original template file is used.

             *

             * @param $file

             */

            function get_template( $file ) {



                if ( empty( $file ) ) {

                    return;

                }



                if ( file_exists( $this->template_path . $file ) ) {

                    $path = $this->template_path . $file;

                } else {

                    $path = $this->original_path . $file;

                }



                $path = apply_filters( "redux/{$this->parent->args['opt_name']}/panel/template/" . $file, $path );



                include( $path );



            }



            /**

             * Retrieve metadata from a file. Based on WP Core's get_file_data function

             *

             * @since 2.1.1

             *

             * @param string $file Path to the file

             *

             * @return string

             */

            public function get_file_version( $file ) {

                // We don't need to write to the file, so just open for reading.

                $fp = fopen( $file, 'r' );



                // Pull only the first 8kiB of the file in.

                $file_data = fread( $fp, 8192 );



                // PHP will close file handle, but we are good citizens.

                fclose( $fp );



                // Make sure we catch CR-only line endings.

                $file_data = str_replace( "\r", "\n", $file_data );

                $version   = '';



                if ( preg_match( '/^[ \t\/*#@]*' . preg_quote( '@version', '/' ) . '(.*)$/mi', $file_data, $match ) && $match[1] ) {

                    $version = _cleanup_header_comment( $match[1] );

                }



                return $version;

            }



            /**

             * Scan the template files

             *

             * @param string $template_path

             *

             * @return array

             */

            public function scan_template_files( $template_path ) {

                $files  = scandir( $template_path );

                $result = array();

                if ( $files ) {

                    foreach ( $files as $key => $value ) {

                        if ( ! in_array( $value, array( ".", ".." ) ) ) {

                            if ( is_dir( $template_path . DIRECTORY_SEPARATOR . $value ) ) {

                                $sub_files = self::scan_template_files( $template_path . DIRECTORY_SEPARATOR . $value );

                                foreach ( $sub_files as $sub_file ) {

                                    $result[] = $value . DIRECTORY_SEPARATOR . $sub_file;

                                }

                            } else {

                                $result[] = $value;

                            }

                        }

                    }

                }



                return $result;

            }



            /**

             * Show a notice highlighting bad template files

             */

            public function template_file_check_notice() {



                if ( $this->template_path == $this->original_path ) {

                    return;

                }



                $core_templates = $this->scan_template_files( $this->original_path );

                $outdated       = false;



                foreach ( $core_templates as $file ) {

                    $developer_theme_file = false;



                    if ( file_exists( $this->template_path . $file ) ) {

                        $developer_theme_file = $this->template_path . $file;

                    }



                    if ( $developer_theme_file ) {

                        $core_version      = $this->get_file_version( $this->original_path . $file );

                        $developer_version = $this->get_file_version( $developer_theme_file );



                        if ( $core_version && $developer_version && version_compare( $developer_version, $core_version, '<' ) ) {

                            ?>

                            <div id="message" class="error redux-message">

                                <p><?php '<strong>Your panel has bundled outdated copies of Redux Framework template files</strong> &#8211; if you encounter functionality issues this could be the reason. Ensure you update or remove them.'; ?></p>

                            </div>

                            <?php

                            return;

                        }

                    }



                }

            }



            /**

             * Outputs the HTML for a given section using the WordPress settings API.

             *

             * @param $k - Section number of settings panel to display

             */

            function output_section( $k ) {

                do_settings_sections( $this->parent->args['opt_name'] . $k . '_section_group' );

            }



        }

    }