<?php


class td_page_generator {


    /**
     * get the single breadcrumbs
     * @param $post_title
     * @return string
     */
    static function get_single_breadcrumbs($post_title) {
        if (td_util::get_option('tds_breadcrumbs_show') == 'hide') {
            return;
        }

        $category_1_name = '';
        $category_1_url = '';
        $category_2_name = '';
        $category_2_url = '';

        $primary_category_id = td_global::get_primary_category_id();
        $primary_category_obj = get_category($primary_category_id);

        //print_r($primary_category_obj);
        if (!empty($primary_category_obj)) {
            if (!empty($primary_category_obj->name)) {
                $category_1_name = $primary_category_obj->name;
            } else {
                $category_1_name = '';
            }

            if (!empty($primary_category_obj->cat_ID)) {
                $category_1_url = get_category_link($primary_category_obj->cat_ID);
            }

            if (!empty($primary_category_obj->parent) and $primary_category_obj->parent != 0) {
                $parent_category_obj = get_category($primary_category_obj->parent);
                if (!empty($parent_category_obj)) {
                    $category_2_name = $parent_category_obj->name;
                    $category_2_url = get_category_link($parent_category_obj->cat_ID);
                }
            }
        }

        if (!empty($category_1_name)) {

            //parent category (only if we have one and if the theme is set to show it)
            if (!empty($category_2_name) and td_util::get_option('tds_breadcrumbs_show_parent') != 'hide' ) {
                $breadcrumbs_array [] = array (
                    'title_attribute' => __td('View all posts in', TD_THEME_NAME) . ' ' . htmlspecialchars($category_2_name),
                    'url' => $category_2_url,
                    'display_name' => $category_2_name
                );


            }

            //child category
            $breadcrumbs_array [] = array (
                'title_attribute' => __td('View all posts in', TD_THEME_NAME) . ' ' . htmlspecialchars($category_1_name),
                'url' => $category_1_url,
                'display_name' => $category_1_name
            );

            //article title (only if the theme is set to show it)
            if (td_util::get_option('tds_breadcrumbs_show_article') != 'hide') {
                //child category
                $breadcrumbs_array [] = array (
                    'title_attribute' => $post_title,
                    'url' => '',
                    'display_name' => td_util::excerpt($post_title, 13)
                );
            }
        }

        if (isset($breadcrumbs_array) and is_array($breadcrumbs_array)) {
            //the breadcrumbs may be empty due to settings
            return self::get_breadcrumbs($breadcrumbs_array); //generate the breadcrumbs
        } else {
            return '';
        }

    }

    static function get_author_breadcrumbs($part_cur_auth_obj) {
        if (td_util::get_option('tds_breadcrumbs_show') == 'hide') {
            return;
        }


        $breadcrumbs_array [] = array (
            'title_attribute' => '',
            'url' => '',
            'display_name' => __td('Authors', TD_THEME_NAME)
        );


        $breadcrumbs_array [] = array (
            'title_attribute' => '',
            'url' => '',
            'display_name' => __td('Posts by', TD_THEME_NAME) . ' ' . $part_cur_auth_obj->display_name
        );

        return self::get_breadcrumbs($breadcrumbs_array);
    }




    static function get_category_breadcrumbs($primary_category_obj) {

        if (td_util::get_option('tds_breadcrumbs_show') == 'hide') {
            return;
        }

        $category_1_name = '';
        $category_1_url = '';
        $category_2_name = '';
        $category_2_url = '';

        //$primary_category_id = td_global::get_primary_category_id();
        //$primary_category_obj = get_category($primary_category_id);

        if (!empty($primary_category_obj)) {
            if (!empty($primary_category_obj->name)) {
                $category_1_name = $primary_category_obj->name;
            } else {
                $category_1_name = '';
            }

            if (!empty($primary_category_obj->cat_ID)) {
                $category_1_url = get_category_link($primary_category_obj->cat_ID);
            }

            if (!empty($primary_category_obj->parent) and $primary_category_obj->parent != 0) {
                $parent_category_obj = get_category($primary_category_obj->parent);
                if (!empty($parent_category_obj)) {
                    $category_2_name = $parent_category_obj->name;
                    $category_2_url = get_category_link($parent_category_obj->cat_ID);
                }
            }
        }

        //print_r($primary_category_obj);

        if (!empty($category_1_name)) {
            //parent category
            if (!empty($category_2_name) and td_util::get_option('tds_breadcrumbs_show_parent') != 'hide' ) {
                $breadcrumbs_array [] = array (
                    'title_attribute' => __td('View all posts in', TD_THEME_NAME) . ' ' . htmlspecialchars($category_2_name),
                    'url' => $category_2_url,
                    'display_name' => $category_2_name
                );
            }



            //child category
            $breadcrumbs_array [] = array (
                'title_attribute' => '',
                'url' => '',
                'display_name' => $category_1_name
            );

        }

        return self::get_breadcrumbs($breadcrumbs_array); //generate the breadcrumbs

    }



    static function get_tag_breadcrumbs($current_tag_name) {
        if (td_util::get_option('tds_breadcrumbs_show') == 'hide') {
            return;
        }


        $breadcrumbs_array [] = array (
            'title_attribute' => '',
            'url' => '',
            'display_name' =>  __td('Tags', TD_THEME_NAME)
        );


        $breadcrumbs_array [] = array (
            'title_attribute' => '',
            'url' => '',
            'display_name' =>  __td('Posts tagged with', TD_THEME_NAME) . ' "' . $current_tag_name . '"'
        );

        return self::get_breadcrumbs($breadcrumbs_array);
    }


    static function get_archive_breadcrumbs() {
        if (td_util::get_option('tds_breadcrumbs_show') == 'hide') {
            return;
        }

        $cur_archive_year = get_the_date('Y');
        $cur_archive_month = get_the_date('n');
        $cur_archive_day = get_the_date('j');

        $breadcrumbs_array [] = array (
            'title_attribute' => '',
            'url' => get_year_link($cur_archive_year),
            'display_name' =>  get_the_date('Y')
        );

        if (is_month() or is_day()) {
            $breadcrumbs_array [] = array (
                'title_attribute' => '',
                'url' => get_month_link($cur_archive_year, $cur_archive_month),
                'display_name' =>  get_the_date('F')
            );
        }

        if (is_day()) {
            $breadcrumbs_array [] = array (
                'title_attribute' => '',
                'url' => get_day_link($cur_archive_year, $cur_archive_month, $cur_archive_day),
                'display_name' =>  get_the_date('j')
            );
        }

        return self::get_breadcrumbs($breadcrumbs_array);
    }



    static function get_home_breadcrumbs() {
        if (td_util::get_option('tds_breadcrumbs_show') == 'hide') {
            return;
        }

        if (td_util::get_home_url()) {
            $breadcrumbs_array [] = array (
                'title_attribute' => __td('Blog', TD_THEME_NAME),
                'url' => td_util::get_home_url(),
                'display_name' =>  __td('Blog', TD_THEME_NAME)
            );
        } else {
            $breadcrumbs_array [] = array (
                'title_attribute' => '',
                'url' =>'',
                'display_name' =>  __td('Blog', TD_THEME_NAME)
            );
        }

        //pagination
        $td_paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
        if ($td_paged > 1) {
            $breadcrumbs_array [] = array (
                'title_attribute' => '',
                'url' =>'',
                'display_name' =>  __td('Page', TD_THEME_NAME) . ' ' . $td_paged
            );
        }

        return self::get_breadcrumbs($breadcrumbs_array);
    }



    static function get_page_breadcrumbs($page_title) {
        if (td_util::get_option('tds_breadcrumbs_show') == 'hide') {
            return;
        }


        global $post;
        if( is_page() ) {
            $parents = get_post_ancestors ($post->ID);

            if (!empty($parents)) {
                $parents = array_reverse($parents);
                foreach ($parents as $parent_id) {
                    $breadcrumbs_array [] = array (
                        'title_attribute' => get_the_title($parent_id),
                        'url' => esc_url(get_permalink($parent_id)),
                        'display_name' =>  get_the_title($parent_id)
                    );
                }
            }
        }

        $breadcrumbs_array [] = array (
            'title_attribute' => '',
            'url' =>'',
            'display_name' =>  $page_title
        );

        return self::get_breadcrumbs($breadcrumbs_array);
    }



    static function get_attachment_breadcrumbs($parent_id = '', $attachment_title = '') {
        if (td_util::get_option('tds_breadcrumbs_show') == 'hide') {
            return;
        }

        //show the attachment parent
        if ($parent_id != '') {
            $breadcrumbs_array [] = array (
                'title_attribute' => get_the_title($parent_id),
                'url' => esc_url(get_permalink($parent_id)),
                'display_name' =>  get_the_title($parent_id)
            );
        }

        $breadcrumbs_array [] = array (
            'title_attribute' => '',
            'url' => '',
            'display_name' =>  $attachment_title
        );
        return self::get_breadcrumbs($breadcrumbs_array);
    }


    static function get_search_breadcrumbs() {
        if (td_util::get_option('tds_breadcrumbs_show') == 'hide') {
            return;
        }

        $breadcrumbs_array [] = array (
            'title_attribute' => '',
            'url' => '',
            'display_name' =>  __td('Search', TD_THEME_NAME)
        );
        return self::get_breadcrumbs($breadcrumbs_array);
    }



    static function get_pagination() {
        global $wp_query;

        if (td_global::$current_template == '404') {
            return;
        }

        $pagenavi_options = self::pagenavi_init();

        $request = $wp_query->request;
        $posts_per_page = intval(get_query_var('posts_per_page'));
        $paged = intval(get_query_var('paged'));
        $numposts = $wp_query->found_posts;
        $max_page = $wp_query->max_num_pages;



        //hack for category pages - pagination
        if(!is_admin() and is_category()) {
            $numposts = $wp_query->found_posts - td_api_category_top_posts_style::_helper_get_posts_shown_in_the_loop(); // fix the pagination, we have x less posts because the rest are in the top posts loop
            $max_page = ceil($numposts / $posts_per_page);
        }


        if(empty($paged) || $paged == 0) {
            $paged = 1;
        }

        $pages_to_show = intval($pagenavi_options['num_pages']);
        $larger_page_to_show = intval($pagenavi_options['num_larger_page_numbers']);
        $larger_page_multiple = intval($pagenavi_options['larger_page_numbers_multiple']);
        $pages_to_show_minus_1 = $pages_to_show - 1;
        $half_page_start = floor($pages_to_show_minus_1/2);
        $half_page_end = ceil($pages_to_show_minus_1/2);
        $start_page = $paged - $half_page_start;
        if($start_page <= 0) {
            $start_page = 1;
        }
        $end_page = $paged + $half_page_end;
        if(($end_page - $start_page) != $pages_to_show_minus_1) {
            $end_page = $start_page + $pages_to_show_minus_1;
        }
        if($end_page > $max_page) {
            $start_page = $max_page - $pages_to_show_minus_1;
            $end_page = $max_page;
        }
        if($start_page <= 0) {
            $start_page = 1;
        }
        $larger_per_page = $larger_page_to_show*$larger_page_multiple;
        $larger_start_page_start = (self::td_round_number($start_page, 10) + $larger_page_multiple) - $larger_per_page;
        $larger_start_page_end = self::td_round_number($start_page, 10) + $larger_page_multiple;
        $larger_end_page_start = self::td_round_number($end_page, 10) + $larger_page_multiple;
        $larger_end_page_end = self::td_round_number($end_page, 10) + ($larger_per_page);
        if($larger_start_page_end - $larger_page_multiple == $start_page) {
            $larger_start_page_start = $larger_start_page_start - $larger_page_multiple;
            $larger_start_page_end = $larger_start_page_end - $larger_page_multiple;
        }
        if($larger_start_page_start <= 0) {
            $larger_start_page_start = $larger_page_multiple;
        }
        if($larger_start_page_end > $max_page) {
            $larger_start_page_end = $max_page;
        }
        if($larger_end_page_end > $max_page) {
            $larger_end_page_end = $max_page;
        }

        if($max_page > 1 || intval($pagenavi_options['always_show']) == 1) {
            $pages_text = str_replace("%CURRENT_PAGE%", number_format_i18n($paged), $pagenavi_options['pages_text']);
            $pages_text = str_replace("%TOTAL_PAGES%", number_format_i18n($max_page), $pages_text);

            echo '<div class="page-nav td-pb-padding-side">';
			
			previous_posts_link($pagenavi_options['prev_text']);
            if ($start_page >= 2 && $pages_to_show < $max_page) {
                $first_page_text = str_replace("%TOTAL_PAGES%", number_format_i18n($max_page), $pagenavi_options['first_text']);
                echo '<a href="'.esc_url(get_pagenum_link()).'" class="first" title="'.$first_page_text.'">'.$first_page_text.'</a>';
                if(!empty($pagenavi_options['dotleft_text']) && ($start_page > 2)) {
                    echo '<span class="extend">'.$pagenavi_options['dotleft_text'].'</span>';
                }
            }
            if($larger_page_to_show > 0 && $larger_start_page_start > 0 && $larger_start_page_end <= $max_page) {
                for($i = $larger_start_page_start; $i < $larger_start_page_end; $i+=$larger_page_multiple) {
                    $page_text = str_replace("%PAGE_NUMBER%", number_format_i18n($i), $pagenavi_options['page_text']);
                    echo '<a href="'.esc_url(get_pagenum_link($i)).'" class="page" title="'.$page_text.'">'.$page_text.'</a>';
                }
            }
            
            for($i = $start_page; $i  <= $end_page; $i++) {
                if($i == $paged) {
                    $current_page_text = str_replace("%PAGE_NUMBER%", number_format_i18n($i), $pagenavi_options['current_text']);
                    echo '<span class="current">'.$current_page_text.'</span>';
                } else {
                    $page_text = str_replace("%PAGE_NUMBER%", number_format_i18n($i), $pagenavi_options['page_text']);
                    echo '<a href="'.esc_url(get_pagenum_link($i)).'" class="page" title="'.$page_text.'">'.$page_text.'</a>';
                }
            }
            
            if($larger_page_to_show > 0 && $larger_end_page_start < $max_page) {
                for($i = $larger_end_page_start; $i <= $larger_end_page_end; $i+=$larger_page_multiple) {
                    $page_text = str_replace("%PAGE_NUMBER%", number_format_i18n($i), $pagenavi_options['page_text']);
                    echo '<a href="'.esc_url(get_pagenum_link($i)).'" class="page" title="'.$page_text.'">'.$page_text.'</a>';
                }
            }
            if ($end_page < $max_page) {
                if(!empty($pagenavi_options['dotright_text']) && ($end_page + 1 < $max_page)) {
                    echo '<span class="extend">'.$pagenavi_options['dotright_text'].'</span>';
                }

                $last_page_text = str_replace("%TOTAL_PAGES%", number_format_i18n($max_page), $pagenavi_options['last_text']);
                echo '<a href="'.esc_url(get_pagenum_link($max_page)).'" class="last" title="'.$last_page_text.'">'.$last_page_text.'</a>';
            }
			next_posts_link($pagenavi_options['next_text'], $max_page);
			if(!empty($pages_text)) {
                echo '<span class="pages">'.$pages_text.'</span>';
            }

            echo '</div>';

        }


    }


    static function td_round_number($num, $tonearest) {
        return floor($num/$tonearest)*$tonearest;
    }


    //the default options
    static function pagenavi_init() {
        $pagenavi_options = array();
        $pagenavi_options['pages_text'] = __td('Page %CURRENT_PAGE% of %TOTAL_PAGES%', TD_THEME_NAME);
        $pagenavi_options['current_text'] = '%PAGE_NUMBER%';
        $pagenavi_options['page_text'] = '%PAGE_NUMBER%';
        $pagenavi_options['first_text'] = __td('1');
        $pagenavi_options['last_text'] = __td('%TOTAL_PAGES%');
        if (is_rtl()) {
            $pagenavi_options['next_text'] = '<i class="td-icon-menu-right"></i>';
            $pagenavi_options['prev_text'] = '<i class="td-icon-menu-left"></i>';
        } else {
            $pagenavi_options['next_text'] = '<i class="td-icon-menu-right"></i>';
            $pagenavi_options['prev_text'] = '<i class="td-icon-menu-left"></i>';
        }
        $pagenavi_options['dotright_text'] = __td('...');
        $pagenavi_options['dotleft_text'] = __td('...');


        $pagenavi_options['num_pages'] = 3;

        $pagenavi_options['always_show'] = 0;
        $pagenavi_options['num_larger_page_numbers'] = 3;
        $pagenavi_options['larger_page_numbers_multiple'] = 1000;

        return $pagenavi_options;
    }



    
    


    static function no_posts() {
        if (td_global::$custom_no_posts_message === false) {
            return '';
        } else {

            $buffy = '<div class="no-results td-pb-padding-side">';
            if (empty(td_global::$custom_no_posts_message)) {
                $buffy .= '<h2>' . __td('No posts to display', TD_THEME_NAME) . '</h2>';
            } else {
                $buffy .= '<h2>' . td_global::$custom_no_posts_message . '</h2>';
            }
            $buffy .= '</div>';
            return $buffy;
        }

    }






    /**
     * the breadcrumb generator
     * @param $breadcrumbs_array - breadcrumbs array
     * @return string
     */
    static function get_breadcrumbs($breadcrumbs_array) {

        if (empty($breadcrumbs_array)) {
            return;
        }

        //add home breadcrumb if the theme is configured to show it
        if (td_util::get_option('tds_breadcrumbs_show_home') != 'hide') {
            array_unshift($breadcrumbs_array, array(
                'title_attribute' => '',
                'url' => esc_url(home_url( '/' )),
                'display_name' => __td('Home', TD_THEME_NAME)
            ));
        }

        $buffy = '';

        $buffy .= '<div class="entry-crumbs">';


        foreach ($breadcrumbs_array as $key => $breadcrumb) {


            if (empty($breadcrumb['url'])) {
                if ($key != 0) { //add separator only after first
                    $buffy .= ' <i class="td-icon-right td-bread-sep td-bred-no-url-last"></i> ';
                }
                //no link - breadcrumb
                $buffy .=  '<span class="td-bred-no-url-last" itemscope itemtype="http://data-vocabulary.org/Breadcrumb">';
                $buffy .= '<meta itemprop="title" content = "' . $breadcrumb['display_name'] . '">';
                $buffy .= '<meta itemprop="url" content = "' . get_permalink() . '">';
                $buffy .= $breadcrumb['display_name'];
                $buffy .= '</span>';
            } else {
                if ($key != 0) { //add separator only after first
                    $buffy .= ' <i class="td-icon-right td-bread-sep"></i> ';
                }
                //normal links
                $buffy .= '<span itemscope itemtype="http://data-vocabulary.org/Breadcrumb"><a title="' . $breadcrumb['title_attribute'] . '" class="entry-crumb" itemprop="url" href="' . $breadcrumb['url'] . '"><span itemprop="title">' . $breadcrumb['display_name'] . '</span></a></span>';
            }

        }
        $buffy .= '</div>';

        return $buffy;
    }

















}
