<?php
namespace Arlo\Shortcodes;

use Arlo\Entities\Categories as CategoriesEntity;

class Categories {
    public static function init() {
        $class = new \ReflectionClass(__CLASS__);

        $shortcodes = array_filter($class->getMethods(), function($method) {
            return strpos($method->name, 'shortcode_') === 0;
        });

        foreach ($shortcodes as $shortcode) {
            $shortcode_name = str_replace('shortcode_', '', $shortcode->name);

            Shortcodes::add($shortcode_name, function($content = '', $atts, $shortcode_name, $import_id) {
                $method_name = 'shortcode_' . str_replace('arlo_', '', $shortcode_name);
                return self::$method_name($content, $atts, $shortcode_name, $import_id);
            });
        } 
    }

    private static function shortcode_categories($content = '', $atts = [], $shortcode_name = '', $import_id = '') {
        $return = '';

        $arlo_categories = self::get_selected_categories();

        // calculate depth
        $depth = (isset($atts['depth'])) ? (int)$atts['depth'] : 1;

        // show title?
        $title = (isset($atts['title'])) ? $atts['title'] : null;
        
        // show counts
        $counts = (isset($atts['counts'])) ? $atts['counts'] : null;

        //from widget
        $widget = (isset($atts['widget'])) ? $atts['widget'] == "true" : false;
                    
        // start at
        $start_at = (isset($atts['parent'])) ? (int)$atts['parent'] : 0;

        if (is_array($arlo_categories)) {
            if (count($arlo_categories) > 1) {
                $title = str_replace('%s','', $title);
            }

            $page_type = \Arlo_For_Wordpress::get_current_page_arlo_type();
            $page_type = ($page_type == 'event' ? 'events' : $page_type);

            $page_filter_settings = get_option("arlo_page_filter_settings");
            $ignored_categories = (isset($page_filter_settings['hiddenfilters'][$page_type]['category']) ? $page_filter_settings['hiddenfilters'][$page_type]['category'] : []);

            foreach ($arlo_categories as $i => $arlo_category) {
                if(!isset($atts['parent']) && $start_at == 0 && !empty($arlo_category)) {
                    $slug = $arlo_category;
                    $start_at = intval(current(explode('-', $slug)));
                }
        
                if($title && $i == 0) {
                    $conditions = array('id' => $start_at);
                    
                    if($start_at == 0) {
                        $conditions = array('parent_id' => 0);
                    }

                    $current = CategoriesEntity::get($conditions, 1, $import_id);
                    
                    $return .= sprintf($title, esc_html($current->c_name));
                }
                
                if ($depth > 0) {
                    if ($start_at == 0) {
                        $root = CategoriesEntity::getTree($start_at, 1, 0, $ignored_categories, $import_id);
                                
                        if (!empty($root)) {
                            $start_at = $root[0]->c_arlo_id;
                        }
                    }
                    
                    $tree = CategoriesEntity::getTree($start_at, $depth, 0, $ignored_categories, $import_id);

                    $GLOBALS['arlo_categories_count'] = (empty($tree) ? 0 : count($tree));
                            
                    if(!empty($tree)) {		
                        $return .= self::generate_category_ul($tree, $counts, $widget);	
                    }	
                }
                $start_at = 0;
            }    
        }

        return $return;
    }

    private static function shortcode_category_title($content = '', $atts, $shortcode_name, $import_id = '') {
        $selected_categories = self::get_selected_categories();
        $arlo_category = array_shift($selected_categories);
        
        if (!empty($arlo_category)) {
            $category = CategoriesEntity::get(array('id' => current(explode('-', $arlo_category))), 1, $import_id);
        } else {
            $category = CategoriesEntity::get(array('parent_id' => 0), 1, $import_id);
        }
        
        if(!$category) return;
        
        return htmlentities($category->c_name, ENT_QUOTES, "UTF-8");
    }

    private static function shortcode_category_header($content = '', $atts, $shortcode_name, $import_id = '') {
        $selected_categories = self::get_selected_categories();
        $arlo_category = array_shift($selected_categories);
        
        if (!empty($arlo_category)) {
            $category = CategoriesEntity::get(array('id' => current(explode('-', $arlo_category))), 1, $import_id);
        } else {
            $category = CategoriesEntity::get(array('parent_id' => 0), 1, $import_id);
        }
        
        if(!$category) return;
        
        return $category->c_header;
    } 

    private static function shortcode_category_footer ($content = '', $atts, $shortcode_name, $import_id = ''){
        $selected_categories = self::get_selected_categories();
        $arlo_category = array_shift($selected_categories);
        
        if (!empty($arlo_category)) {
            $category = CategoriesEntity::get(array('id' => current(explode('-', $arlo_category))), 1, $import_id);
        } else {
            $category = CategoriesEntity::get(array('parent_id' => 0), 1, $import_id);
        }
        
        if(!$category) return;
        
        return $category->c_footer;
    }

    private static function get_selected_categories() {
        $category_atts = !empty(\Arlo\Shortcodes\Templates::$event_template_atts) ? \Arlo\Shortcodes\Templates::$event_template_atts : 
        (!empty(\Arlo\Shortcodes\UpcomingEvents::$upcoming_list_item_atts) ? \Arlo\Shortcodes\UpcomingEvents::$upcoming_list_item_atts :
        (!empty(\Arlo\Shortcodes\OnlineActivities::$oa_list_atts) ? \Arlo\Shortcodes\OnlineActivities::$oa_list_atts :
        null));
     
        return \Arlo\Utilities::convert_string_to_int_array(\Arlo\Utilities::get_att_string('category', $category_atts));
    }

    // category list
    private static function generate_category_ul($items, $counts, $widget = false) {
        $post_types = arlo_get_option('post_types');
        $page_type = \Arlo_For_Wordpress::get_current_page_arlo_type();

        if (empty($page_type) || $widget) {
            $page_type = 'event';
        }

        if (empty($post_types[$page_type]['posts_page'])) 
            return null;

        $events_url = get_page_link($post_types[$page_type]['posts_page']);
        
        if(!is_array($items) || empty($items)) return '';

        $arlo_region = \Arlo_For_Wordpress::get_region_parameter();
        
        $html = '<ul class="arlo-category-list">';

        foreach($items as $cat) {
            $href = $events_url . (!empty($arlo_region) ? 'region-' . $arlo_region . '/' : '') . ($cat->c_parent_id != 0 ? 'cat-' . esc_attr($cat->c_slug) : '');
            $cat_name = $cat->c_name . ( !is_null($counts) ?  sprintf($counts, $cat->c_template_num) : '' );
            $child_li = (isset($cat->children) ? self::generate_category_ul($cat->children, $counts, $widget) : '');

            $html .= sprintf('<li><a href="%s">%s</a>%s</li>', esc_url($href), esc_html($cat_name), $child_li);
        }
        
        $html .= '</ul>';
        
        return $html;
    }   
}