<?php

/**
 * Options Sorter Field for Redux Options
 *
 * @author                      Yannis - Pastis Glaros <mrpc@pramnoshosting.gr>
 * @url                         http://www.pramhost.com
 * @license                     [http://www.gnu.org/copyleft/gpl.html GPLv3
 *                              This is actually based on:   [SMOF - Slightly Modded Options Framework](http://aquagraphite.com/2011/09/slightly-modded-options-framework/)
 *                              Original Credits:
 *                              Author:                      Syamil MJ
 *                              Author URI:                  http://aquagraphite.com
 *                              License:                     GPLv3 - http://www.gnu.org/copyleft/gpl.html
 *                              Credits:                     Thematic Options Panel - http://wptheming.com/2010/11/thematic-options-panel-v2/
 *                              KIA Thematic Options Panel:   https://github.com/helgatheviking/thematic-options-KIA
 *                              Woo Themes:                   http://woothemes.com/
 *                              Option Tree:                  http://wordpress.org/extend/plugins/option-tree/
 *                              Twitter:                     http://twitter.com/syamilmj
 *                              Website:                     http://aquagraphite.com
 */

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

if ( ! class_exists( 'ReduxFramework_sorter' ) ) {
    class ReduxFramework_sorter {

        /**
         * Field Constructor.
         * Required - must call the parent constructor, then assign field and value to vars, and obviously call the render field function
         *
         * @since Redux_Options 1.0.0
         */
        function __construct( $field = array(), $value = '', $parent ) {
            $this->parent = $parent;
            $this->field  = $field;
            $this->value  = $value;
        }

        private function replace_id_with_slug($arr){
            $new_arr = array();

            foreach($arr as $id => $name) {

                if ( is_numeric ( $id ) ) {
                    $slug = strtolower($name);
                    $slug = str_replace(' ', '-', $slug);

                    $new_arr[$slug] = $name;
                } else {
                    $new_arr[$id] = $name;
                }
            }

            return $new_arr;
        }

        private function is_value_empty($val){
            foreach($val as $section => $arr) {
                if (!empty($arr)) {
                    return false;
                }
            }

            return true;
        }

        /**
         * Field Render Function.
         * Takes the vars and outputs the HTML for the field in the settings
         *
         * @since 1.0.0
         */
        function render() {

            if ( ! is_array( $this->value ) && isset( $this->field['options'] ) ) {
                $this->value = $this->field['options'];
            }

            if ( ! isset( $this->field['args'] ) ) {
                $this->field['args'] = array();
            }

            if ( isset( $this->field['data'] ) && ! empty( $this->field['data'] ) && is_array( $this->field['data'] ) ) {
                foreach ( $this->field['data'] as $key => $data ) {
                    if ( ! isset( $this->field['args'][ $key ] ) ) {
                        $this->field['args'][ $key ] = array();
                    }

                    $this->field['options'][ $key ] = $this->parent->get_wordpress_data( $data, $this->field['args'][ $key ] );
                }

                // id numbers as array keys won't work in the checks below
                // so, replace them with slugs of the value.
                $this->field['options'][ $key ] = $this->replace_id_with_slug($this->field['options'][ $key ]);
            }

            // Make sure to get list of all the default blocks first
            $all_blocks = ! empty( $this->field['options'] ) ? $this->field['options'] : array();
            $temp       = array(); // holds default blocks
            $temp2      = array(); // holds saved blocks

            foreach ( $all_blocks as $blocks ) {
                $temp = array_merge( $temp, $blocks );
            }

            if ($this->is_value_empty ( $this->value)) {
                $this->value = $this->field['options'];
            }

            $sortlists = $this->value;

            foreach($sortlists as $section => $arr) {
                $sortlists[$section] = $this->replace_id_with_slug($arr);
            }

            if ( is_array( $sortlists ) ) {
                foreach ( $sortlists as $sortlist ) {
                    $temp2 = array_merge( $temp2, $sortlist );
                }

                // now let's compare if we have anything missing
                foreach ( $temp as $k => $v ) {
                    // k = id/slug
                    // v = name

                    if (!empty($temp2)) {
                        if ( ! array_key_exists( $k, $temp2 ) ) {
                            $sortlists['disabled'][ $k ] = $v;
                        }
                    }
                }

                // now check if saved blocks has blocks not registered under default blocks
                foreach ( $sortlists as $key => $sortlist ) {
                    // key = enabled, disabled, backup
                    // sortlist = id => name

                    foreach ( $sortlist as $k => $v ) {
                        // k = id
                        // v = name
                        if ( ! array_key_exists( $k, $temp ) ) {
                            unset( $sortlist[ $k ] );
                        }
                    }
                    $sortlists[ $key ] = $sortlist;
                }

                // assuming all sync'ed, now get the correct naming for each block
                foreach ( $sortlists as $key => $sortlist ) {
                    foreach ( $sortlist as $k => $v ) {
                        $sortlist[ $k ] = $temp[ $k ];
                    }
                    $sortlists[ $key ] = $sortlist;
                }

                if ( $sortlists ) {
                    echo '<fieldset id="' . $this->field['id'] . '" class="redux-sorter-container redux-sorter">';

                    foreach ( $sortlists as $group => $sortlist ) {
                        $filled = "";

                        if ( isset( $this->field['limits'][ $group ] ) && count( $sortlist ) >= $this->field['limits'][ $group ] ) {
                            $filled = " filled";
                        }

                        echo '<ul id="' . $this->field['id'] . '_' . $group . '" class="sortlist_' . $this->field['id'] . $filled . '" data-id="' . $this->field['id'] . '" data-group-id="' . $group . '">';
                        echo '<h3>' . $group . '</h3>';

                        if ( ! isset( $sortlist['placebo'] ) ) {
                            array_unshift( $sortlist, array( "placebo" => "placebo" ) );
                        }

                        foreach ( $sortlist as $key => $list ) {

                            echo '<input class="sorter-placebo" type="hidden" name="' . $this->field['name'] . '[' . $group . '][placebo]' . $this->field['name_suffix'] . '" value="placebo">';

                            if ( $key != "placebo" ) {

                                //echo '<li id="' . $key . '" class="sortee">';
                                echo '<li id="sortee-' . $key . '" class="sortee" data-id="'. $key .'">';
                                echo '<input class="position ' . $this->field['class'] . '" type="hidden" name="' . $this->field['name'] . '[' . $group . '][' . $key . ']' . $this->field['name_suffix'] . '" value="' . $list . '">';
                                echo $list;
                                echo '</li>';
                            }
                        }

                        echo '</ul>';
                    }
                    echo '</fieldset>';
                }
            }
        }

        function enqueue() {
            if ($this->parent->args['dev_mode']) {
                wp_enqueue_style(
                    'redux-field-sorder-css',
                    ReduxFramework::$_url . 'inc/fields/sorter/field_sorter.css',
                    array(),
                    time(),
                    'all'
                );
            }

            wp_enqueue_script(
                'redux-field-sorter-js',
                ReduxFramework::$_url . 'inc/fields/sorter/field_sorter' . Redux_Functions::isMin() . '.js',
                array( 'jquery', 'redux-js', 'jquery-ui-sortable' ),
                time(),
                true
            );
        }

        /**
         * Functions to pass data from the PHP to the JS at render time.
         *
         * @return array Params to be saved as a javascript object accessable to the UI.
         * @since  Redux_Framework 3.1.5
         */
        function localize( $field, $value = "" ) {

            $params = array();

            if ( isset( $field['limits'] ) && ! empty( $field['limits'] ) ) {
                $params['limits'] = $field['limits'];
            }

            if ( empty( $value ) ) {
                $value = $this->value;
            }
            $params['val'] = $value;

            return $params;
        }
    }
}