<?php

/**
 * The public-facing functionality of the plugin.
 *
 * @link       https://ays-pro.com
 * @since      1.0.0
 *
 * @package    Advanced_Related_Posts
 * @subpackage Advanced_Related_Posts/public
 */

/**
 * The public-facing functionality of the plugin.
 *
 * Defines the plugin name, version, and two examples hooks for how to
 * enqueue the public-facing stylesheet and JavaScript.
 *
 * @package    Advanced_Related_Posts
 * @subpackage Advanced_Related_Posts/public
 * @author     Advanced Related Posts Team <info@ays-pro.com>
 */
class Advanced_Related_Posts_Public {

	/**
	 * The ID of this plugin.
	 *
	 * @since    1.0.0
	 * @access   private
	 * @var      string    $plugin_name    The ID of this plugin.
	 */
	private $plugin_name;

	/**
	 * The version of this plugin.
	 *
	 * @since    1.0.0
	 * @access   private
	 * @var      string    $version    The current version of this plugin.
	 */
	private $version;

	private $html_class_prefix = 'ays-arp-';
	private $html_name_prefix = 'ays-arp-';
	private $name_prefix = 'arp_';
	private $unique_id;
	private $unique_id_in_class;
	private $current_post_obj;
    private $options;
    private $meta_values;
    private $layout_obj;

	/**
	 * Initialize the class and set its properties.
	 *
	 * @since    1.0.0
	 * @param      string    $plugin_name       The name of the plugin.
	 * @param      string    $version    The version of this plugin.
	 */
	public function __construct( $plugin_name, $version ) {

		$this->plugin_name = $plugin_name;
		$this->version = $version;

	}

	/**
	 * Register the stylesheets for the public-facing side of the site.
	 *
	 * @since    1.0.0
	 */
	public function enqueue_styles() {

		/**
		 * This function is provided for demonstration purposes only.
		 *
		 * An instance of this class should be passed to the run() function
		 * defined in Advanced_Related_Posts_Loader as all of the hooks are defined
		 * in that particular class.
		 *
		 * The Advanced_Related_Posts_Loader will then create the relationship
		 * between the defined hooks and the functions defined in this
		 * class.
		 */
        $id_prefix = $this->plugin_name . '-under-posts';

	}

	/**
	 * Register the JavaScript for the public-facing side of the site.
	 *
	 * @since    1.0.0
	 */
	public function enqueue_scripts() {

		/**
		 * This function is provided for demonstration purposes only.
		 *
		 * An instance of this class should be passed to the run() function
		 * defined in Advanced_Related_Posts_Loader as all of the hooks are defined
		 * in that particular class.
		 *
		 * The Advanced_Related_Posts_Loader will then create the relationship
		 * between the defined hooks and the functions defined in this
		 * class.
		 */

        $id_prefix = $this->plugin_name . '-under-posts';

		wp_enqueue_script( $id_prefix , plugin_dir_url( __FILE__ ) . 'js/advanced-related-posts-public.js', array( 'jquery' ), $this->version, false );
		wp_enqueue_script( $id_prefix . '-ajax', plugin_dir_url( __FILE__ ) . 'js/advanced-related-posts-public-ajax.js', array( 'jquery' ), $this->version, false );
        wp_localize_script($id_prefix , 'aysAdvancedRelatedPostsAjaxPublic', array(
            'ajaxUrl' => admin_url('admin-ajax.php'),
        ) );
        wp_localize_script( $id_prefix, 'aysAdvancedRelatedPostsLangObj', array(
            'notAnsweredText'       => __( 'You have not answered this question', $this->plugin_name ),
        ) );

	}

	public function enqueue_styles_early(){
		wp_enqueue_style( $this->plugin_name, plugin_dir_url( __FILE__ ) . 'css/advanced-related-posts-public.css', array(), $this->version, 'all' );
    }

    public function ays_generate_advanced_related_posts_method( $content ){
        $id = get_the_ID(); // Post ID
        $flag = true;

        if ( $id ) {
        	/*******************************************************************************************************/

        	$this->enqueue_styles();
	        $this->enqueue_scripts();

	        /*******************************************************************************************************/

    		$this->current_post_obj = get_post( $id, "OBJECT" );

    		$this->options = Advanced_Related_Posts_Data::get_arp_validated_data_from_array();

            $this->meta_values = get_post_meta( $id, $this->name_prefix . 'post_meta', false );

    		/*******************************************************************************************************/

    		$flag = $this->check_advanced_related_posts($id);

	        if ( $flag ) {

	        	$arp_content = $this->show_advanced_related_posts($id);

	        	if ( $arp_content ) {
	        		$content .= $arp_content;
	        	}
	        }
	    }

        return $content;
    }

    public function check_advanced_related_posts( $id ){
    	$cat_id = get_the_category( $id );
    	$flag = true;

    	$exclude_categories_ids = array();
		$exclude_posts_ids = array();

        // Exclude for categories
    	if ( ! empty( $this->options[ $this->name_prefix . 'under_posts_exclude_categories_ids' ] ) ) {
    		$exclude_categories_ids_arr = $this->options[ $this->name_prefix . 'under_posts_exclude_categories_ids' ];
    		foreach ($exclude_categories_ids_arr as $key => $categories_id) {

    			if ($categories_id == '') {
    				continue;
    			}

    			$categories_id_val = absint( $categories_id );

    			if ($categories_id_val == 0) {
    				continue;
    			}

                if ( ! in_array($categories_id_val, $exclude_categories_ids) ) {
                    $exclude_categories_ids[] = $categories_id_val;
                }

    		}
    	}

    	// Exclude posts ids
    	if ( $this->options[ $this->name_prefix . 'under_posts_exclude_post_ids' ] != '' ) {
    		$exclude_post_ids_arr = explode(',',  $this->options[ $this->name_prefix . 'under_posts_exclude_post_ids' ] );

    		foreach ($exclude_post_ids_arr as $key => $post_id) {

    			if ($post_id == '') {
    				continue;
    			}

    			$post_id_val = absint( $post_id );

    			if ($post_id_val == 0) {
    				continue;
    			}
                if ( ! in_array($post_id_val, $exclude_posts_ids) ) {
        			$exclude_posts_ids[] = $post_id_val;
                }
    		}
    	}

        // Check currrent post category id
        if (! empty($cat_id) || ! is_null($cat_id) ) {
            foreach ($cat_id as $key => $c_id) {
    	        if( in_array($c_id->term_id, $exclude_categories_ids) ){
    	        	$flag = false;
                    break;
    	        }
            }
        }

        // Check currrent post id
        if( in_array($id, $exclude_posts_ids) ){
        	$flag = false;
        }

        // Disable on mobile devices
        if ( $this->options[ $this->name_prefix . 'under_posts_display_on_mobile' ] ) {
    		$check_device = wp_is_mobile();

            if ( $check_device ) {
                $flag = false;
            }
    	}

        // Enable for all post types
    	if ( ! $this->options[ $this->name_prefix . 'under_posts_all_post_type' ] ) {
    		// For selected post types
    		if ( ! empty( $this->options[ $this->name_prefix . 'under_posts_selected_post_type' ] ) ) {
    			$selected_post_type = $this->options[ $this->name_prefix . 'under_posts_selected_post_type' ];

    			$current_post_type = (isset( $this->current_post_obj->post_type ) && $this->current_post_obj->post_type != '') ? $this->current_post_obj->post_type : null;

    			if ( ! is_null( $current_post_type ) ) {
	    			// Check currrent post type
			        if( ! in_array( $current_post_type , $selected_post_type) ){
			        	$flag = false;
			        }
    			}
    		}
    	}

    	// Display on the front page
        if ( is_front_page() ) {
            if ( ! $this->options[ $this->name_prefix . 'under_posts_display_front_page' ] ) {
                $flag = false;
            }else {
                if ( ! is_singular() && ! ( (is_archive() || is_home()) ) ) {
                    $flag = false;
                }
            }
        }

        if( is_archive() || is_category() || is_home() || is_search() ) {
            $flag = false;
        }

        return $flag;
    }

    public function show_advanced_related_posts( $id ){

        /*******************************************************************************************************/

        $unique_id = uniqid();
        $this->unique_id = $unique_id;
        $this->unique_id_in_class = $id . "-" . $unique_id;;

        /*******************************************************************************************************/

        $content = array();

        $posts = array();
        // Uunder posts count
        $posts_count = $this->options[ $this->name_prefix . 'under_posts_count' ];

        // Only from same
        $only_from_same = $this->options[ $this->name_prefix . 'under_posts_only_from_same' ];

        // Strongness of matching
        $strongness_of_matching = $this->options[ $this->name_prefix . 'under_posts_strongness_of_matching' ];
        
        $user_id = get_current_user_id();

        /*******************************************************************************************************/
        $got_post_ids = array();
        if ( ! empty( $only_from_same ) && $strongness_of_matching != 'and' ) {

            $only_from_same = array(
                "same_post_type",
                "categories",
                "post_tag",
                "post_format",
            );

    		foreach ($only_from_same as $index => $value) {

                // Get posts
                $posts_arr = $this->ays_under_posts_get_posts( $id , $index, $got_post_ids );

                if ( $posts_arr ) {
                    foreach ($posts_arr as $k => $v) {
                        if ( $k == 'ID' ) {
                            $got_post_ids[] = $v->ID;
                        }
                    }

                    $posts = array_merge($posts, $posts_arr);

                    $count_of_posts_arr = count( $posts );

                    if ( $count_of_posts_arr > $posts_count ) {
                        $posts = array_slice( $posts , 0, $posts_count );
                        break;
                    } elseif ( $count_of_posts_arr == $posts_count ) {
                        break;
                    }
                }
            }
        }else {
            // Get posts
            $posts = $this->ays_under_posts_get_posts( $id , 0, $got_post_ids );
        }

		if ( empty( $posts ) ) {
			// Show when no posts are found
        	$under_posts_no_post_found = $this->options[ $this->name_prefix . 'under_posts_no_post_found' ];

        	// Dispaly custom text 
			switch ( $under_posts_no_post_found ) {
				case 'display_custom_text':
					$content[] = '<div class="' . $this->html_class_prefix . 'under-posts-container" id="' . $this->html_class_prefix . 'under-posts-container-' . $this->unique_id_in_class . '" data-id="' . $unique_id . '">';
			    	$content[] = '<input type="hidden" name="'. $this->html_name_prefix .'id-' . $unique_id . '" value="'. $id .'">';

			    	$content[] = '<div class="' . $this->html_class_prefix . 'under-posts-empty-content-row">';
				    	$content[] = '<div class="' . $this->html_class_prefix . 'under-posts-empty-content">';
				        	$content[] = do_shortcode( stripcslashes( $this->options[ $this->name_prefix . 'under_posts_no_post_found_custom_text' ] ) );
				        $content[] = '</div>';
			        $content[] = '</div>';

			        $content[] = $this->get_styles();

			        $content[] = '</div>';
					break;
				case 'blank_output':
				default:
					break;
			}

			$content = implode( '', $content );
    		return $content;
		}
		// Display Order results
        switch ( $this->options[ $this->name_prefix . 'under_posts_display_order_results' ] ) {
            case 'new_to_old':
                usort($posts, function($a, $b) {
                    if ($a->ID == $b->ID){
                        return (0);
                    }
                    return (($a->ID < $b->ID) ? 1 : -1);
                });
            break;
            case 'old_to_new':
                usort($posts, function($a, $b) {
                    if ($a->ID == $b->ID){
                        return (0);
                    }
                    return (($a->ID < $b->ID) ? -1 : 1);
                });
            break;
            case 'asc':
                usort($posts, function($a, $b) {
                    return strcmp($a->post_title, $b->post_title);
                });
            break;
            case 'desc':
                usort($posts, function($a, $b) {
                    return -1 * strcmp($a->post_title, $b->post_title);
                });
            break;
            case 'random':
                shuffle( $posts );
            break;
            default:
            break;
        }

        // Layouts | Class for container
        $layout_container_class = '';
        $under_posts_layout = $this->options[ $this->name_prefix . 'under_posts_layouts' ];
        switch ( $under_posts_layout ) {
            case 'elegant':
            case 'classy':
            case 'grid':
                $layout_container_class = $this->html_class_prefix . $under_posts_layout . '-layout';
                break;
            default:
                $layout_container_class = $this->html_class_prefix . 'elegant-layout';
                break;
        }

		$data_ratio = '';
		// Thumbnail Width / Height
        if ( $this->options[ $this->name_prefix . 'under_posts_thumbnail_responsive_width_height' ] ) {
        	// Responsive Width/Height Ratio
        	$responsive_ratio = $this->options[ $this->name_prefix . 'under_posts_thumbnail_responsive_width_height_ratio' ];

            if ( $under_posts_layout == 'grid' ) {
                $responsive_ratio = 1;
            }

        	$data_ratio = 'data-ratio="' . $responsive_ratio . '"';
        } else {
            if ( $under_posts_layout == 'grid' ) {
                $responsive_ratio = 1;
                
                $data_ratio = 'data-ratio="' . $responsive_ratio . '"';
            }
        }

        
    	$content[] = '<div class="' . $this->html_class_prefix . 'under-posts-container '. $layout_container_class .' '. $this->options[ $this->name_prefix . 'under_posts_custom_class' ] .'" id="' . $this->html_class_prefix . 'under-posts-container-' . $this->unique_id_in_class . '"  data-id="' . $unique_id . '" ' . $data_ratio . '>';
    	// Title of the box
    	$content[] = '<h2 class="' . $this->html_class_prefix . 'under-posts-container-title">' . $this->options[ $this->name_prefix . 'under_posts_box_title' ] . '</h2>';

    	$content[] = '<input type="hidden" name="'. $this->html_name_prefix .'id-' . $unique_id . '" value="'. $id .'">';

        $content[] = $this->create_posts( $posts );

        $content[] = $this->get_styles();

        $content[] = '</div>';
        
    	$content = implode( '', $content );
    	return $content;

    }

    public function ays_under_posts_get_posts( $id, $index = 0, $got_post_ids = array() ){
    	global $wp_query;

    	$posts = array();

    	$exclude_posts_ids = array( $id );
    	$date_query = array();

    	$category_ids = array();
    	$post_type = 'any';
        $post_format = '';
    	$post_tag = '';
    	$orderby = '';
    	$order = '';

        if ( ! empty( $got_post_ids ) ) {
            $exclude_posts_ids = array_merge($got_post_ids, $exclude_posts_ids);
        }

    	// Uunder posts count
    	$posts_count = $this->options[ $this->name_prefix . 'under_posts_count' ];

    	// Exclude for categories
    	if ( $this->options[ $this->name_prefix . 'under_posts_general_exclude_cat_ids' ] != '' ) {
    		$exclude_categories_ids_arr = explode(',',  $this->options[ $this->name_prefix . 'under_posts_general_exclude_cat_ids' ] );

    		foreach ($exclude_categories_ids_arr as $key => $categories_id) {

    			if ($categories_id == '') {
    				continue;
    			}

    			$categories_id_val = absint( $categories_id );

    			if ($categories_id_val == 0) {
    				continue;
    			}
    			$categories_id_val = -1 * $categories_id_val;

    			$category_ids[] = $categories_id_val;
    		}
    	}

        // Meta Box
        $arp_get_post_metas = $this->meta_values;
        if ( ! empty( $arp_get_post_metas ) ) {
            foreach ($arp_get_post_metas as $key => $arp_get_post_meta) {
                $arp_metabox_post_ids = ( isset( $arp_get_post_meta [ $this->name_prefix . 'metabox_exclude_post_ids'] ) && sanitize_text_field( $arp_get_post_meta [ $this->name_prefix . 'metabox_exclude_post_ids'] ) != '') ? sanitize_text_field( $arp_get_post_meta [ $this->name_prefix . 'metabox_exclude_post_ids'] ) : '';
                if ( ! empty( $arp_metabox_post_ids ) ) {
                    $arp_metabox_post_ids_arr = explode(',',  $arp_metabox_post_ids );

                    foreach ($arp_metabox_post_ids_arr as $key => $metabox_post_id) {

                        if ($metabox_post_id == '') {
                            continue;
                        }

                        $metabox_post_id_val = absint( $metabox_post_id );

                        if ($metabox_post_id_val == 0) {
                            continue;
                        }

                        if ( ! in_array($metabox_post_id_val, $exclude_posts_ids) ) {
                            $exclude_posts_ids[] = $metabox_post_id_val;
                        }
                    }
                }
            }
        }

    	// Exclude posts ids
    	if ( $this->options[ $this->name_prefix . 'under_posts_general_exclude_post_ids' ] != '' ) {
    		$exclude_post_ids_arr = explode(',',  $this->options[ $this->name_prefix . 'under_posts_general_exclude_post_ids' ] );

    		foreach ($exclude_post_ids_arr as $key => $post_id) {

    			if ($post_id == '') {
    				continue;
    			}

    			$post_id_val = absint( $post_id );

    			if ($post_id_val == 0) {
    				continue;
    			}
                if ( ! in_array($post_id_val, $exclude_posts_ids) ) {
        			$exclude_posts_ids[] = $post_id_val;
                }
    		}
    	}

    	$order_posts_query = $this->options[ $this->name_prefix . 'under_posts_order_posts_query' ];
    	// Order posts query
    	switch ( $order_posts_query ) {
    		case 'relevance':
    			// Order search results by relevance only when another "orderby" is not specified in the query.
    			$orderby = '';
    			break;
    		case 'random':
    			$orderby = 'rand';
    			break;
			case 'by_date':
				$orderby = 'date';
                $order = 'DESC';
    			break;
    		default:
    			$orderby = '';
    			break;
    	}

    	// Only from same
    	$only_from_same = $this->options[ $this->name_prefix . 'under_posts_only_from_same' ];

    	// Strongness of matching
    	$strongness_of_matching = $this->options[ $this->name_prefix . 'under_posts_strongness_of_matching' ];


    	// =============================================================
        // =======================   Filters   =========================
    	// ======================     START     ========================


    	// Only from same
		if ( ! empty( $only_from_same ) ) {
            $post_type = (isset( $this->current_post_obj->post_type ) && $this->current_post_obj->post_type != '') ? $this->current_post_obj->post_type : 'any';
		}

    	// Get the curent post categories
    	$post_categories_arr = get_the_category( $id );

    	if ( $post_categories_arr && !empty( $post_categories_arr ) ) {

    		foreach ($post_categories_arr as $key => $post_category) {
    			$post_category = (array) $post_category;

    			$cat_ID = (isset( $post_category['cat_ID'] ) && sanitize_text_field( $post_category['cat_ID'] ) != '') ? absint( sanitize_text_field( $post_category['cat_ID'] ) ) : null;

    			if ( ! is_null( $cat_ID ) ) {

    				$chcek_cat_ID = -1 * $cat_ID;

    				if ( ! in_array($chcek_cat_ID, $category_ids ) ) {
    					$category_ids[] = $cat_ID;
    				}
    			}
    		}
    	}

    	// Get the curent post tags
    	$post_tags_arr = get_the_tags( $id );

    	if ( $post_tags_arr && !empty( $post_tags_arr ) ) {
    		$tag_arr = array();
    		foreach ($post_tags_arr as $key => $post_tag) {
    			$post_tag = (array) $post_tag;

    			$tag_slug = (isset( $post_tag['slug'] ) && sanitize_text_field( $post_tag['slug'] ) != '') ? sanitize_text_field( $post_tag['slug'] ) : '';

    			if ( $tag_slug != '' ) {
    				$tag_arr[] = $tag_slug;
    			}
    		}
    		$post_tag = implode( ',', $tag_arr );
    	}

    	// Get the current post format
    	$post_format_str = get_post_format( $id );

    	if ( $post_format_str && !empty( $post_format_str ) ) {
    		$post_format = $post_format_str;
    	}

    	// =============================================================
        // =======================   Filters   =========================
    	// =====================      END      =========================

    	switch ( $strongness_of_matching ) {
    		case 'and':
    			break;
			case 'or':

                $new_only_from_same = array();

                if ( $index > 0 ) {
                    $new_only_from_same = array();
                    if ( ($filter_type = array_search('same_post_type', $only_from_same)) !== false ) {
                        $new_only_from_same[] = 'same_post_type';
                    }
                }

                if ( $index > 1 ) {
                    $new_only_from_same = array();
                    if ( ($filter_type = array_search('categories', $only_from_same)) !== false ) {
                        $new_only_from_same[] = 'categories';
                    }
                }

                if ( $index > 2 ) {
                    $new_only_from_same = array();
                    if ( ($filter_type = array_search('post_tag', $only_from_same)) !== false ) {
                        $new_only_from_same[] = 'post_tag';
                    }
                }

                if ( ! empty( $new_only_from_same ) ) {
                    $only_from_same = $new_only_from_same;
                }

    			break;
    		default:

                if ( $index > 0 ) {
                    if (($filter_type = array_search('post_format', $only_from_same)) !== false) {
                        unset($only_from_same[$filter_type]);
                    }
                }

                if ( $index > 1 ) {
                    if (($filter_type = array_search('post_tag', $only_from_same)) !== false) {
                        unset($only_from_same[$filter_type]);
                    }
                }

                if ( $index > 2 ) {
                    if (($filter_type = array_search('categories', $only_from_same)) !== false) {
                        unset($only_from_same[$filter_type]);
                    }
                }

    			break;
    	}

    	// =============================================================
        // =====================    Date Query     =====================
    	// =============================================================

    	// Display only posts from the past
    	if ( $this->options[ $this->name_prefix . 'under_posts_enable_posts_from_past' ] ) {
    		$strtotime_str = '';  

    		// Count only posts from the past
    		$posts_from_past_period = $this->options[ $this->name_prefix . 'under_posts_posts_from_past_period' ];

    		$past_period = -1 * $posts_from_past_period;

    		// Time only posts from the past
    		$time_posts_from_past  = $this->options[ $this->name_prefix . 'under_posts_time_posts_from_past' ];

    		switch ( $time_posts_from_past ) {
	    		case 'month':
	    		case 'week':
				case 'day':
	    			$strtotime_str = $past_period . ' ' . $time_posts_from_past;
	    			break;
	    		default:
	    			$strtotime_str = $past_period . ' ' . 'month';
	    			break;
	    	}

			$date_query['after'] = strtotime( $strtotime_str );
    	}

    	// Display only posts older than current post
    	if ( $this->options[ $this->name_prefix . 'under_posts_enable_posts_older_current_post' ] ) {
    		if ( isset($this->current_post_obj->post_date) ) {

    			$date_query['before'] = strtotime( $this->current_post_obj->post_date );

    			if ( isset($date_query['after']) ) {
    				$date_query['inclusive'] = true;
    			}
        	}
    	}

    	// =============================================================
        // =====================    Date Query     =====================
    	// =============================================================

    	// Parameters
		$posts_args = array(
            'numberposts' => $posts_count,
            'include'     => array(),
            'exclude'     => $exclude_posts_ids,
            'meta_key'    => '',
            'meta_value'  => '',
            'post_status' => 'publish',
            'suppress_filters' => true,
        );

        if ( $this->options[ $this->name_prefix . 'under_posts_limit_to_same_author' ] ) {
        	if ( isset($this->current_post_obj->post_author) ) {
        		$posts_args['author'] = $this->current_post_obj->post_author;
        	}
        }

        if ( $order != '' ) {
            $posts_args['order'] = $order;
        }

        if ( $orderby != '' ) {
        	$posts_args['orderby'] = $orderby;
        }

        if ( ! empty( $date_query ) ) {
        	$posts_args['date_query'] = $date_query;
        }

        if ( in_array( 'same_post_type' , $only_from_same ) ) {
        	$posts_args['post_type'] = $post_type;
        }

        if ( in_array( 'categories' , $only_from_same ) ) {
	        if ( ! empty( $category_ids ) ) {
	        	$posts_args['category'] = $category_ids;
	        }
        }

        if ( in_array( 'post_tag' , $only_from_same ) ) {
	        if ( $post_tag != '' ) {
	        	$posts_args['tag'] = $post_tag;
	        }
	    }

	    if ( in_array( 'post_format' , $only_from_same ) ) {
            if ( $post_format != '' ) {
                $posts_args['tax_query'] = array(
                    array(
                        'taxonomy' => 'post_format',
                        'field' => 'slug',
                        'terms' => array( 'post-format-'. $post_format ),
                    )
                );
            }
        }

		// Get posts
        $posts = get_posts( $posts_args );


		return $posts;
    }

    public function create_posts( $posts ){

    	$content = array();
        $layout_content = '';

        $layout_options = array(
            'unique_id'            => $this->unique_id,
            'unique_id_in_class'   => $this->unique_id_in_class,
        );

        // Layouts
        $under_posts_layout = $this->options[ $this->name_prefix . 'under_posts_layouts' ];
        switch ( $under_posts_layout ) {
            case 'elegant':
            case 'classy':
            case 'grid':
                include_once('partials/class-advanced-related-posts-under-posts-'. $under_posts_layout .'-layout.php');
                $layout_class_name = 'Advanced_Related_Posts_Under_Posts_' . strtoupper( $under_posts_layout ) . '_Layout';

                $this->layout_obj = new $layout_class_name( $this->plugin_name, $this->version, $this->options, $under_posts_layout, $layout_options );
                $layout_content = $this->layout_obj->ays_arp_generate_layout_content( $posts );
                break;
            default:
                include_once('partials/class-advanced-related-posts-under-posts-elegant-layout.php');
                $layout_class_name = 'Advanced_Related_Posts_Under_Posts_ELEGANT_Layout';

                $this->layout_obj = new $layout_class_name( $this->plugin_name, $this->version, $this->options, $under_posts_layout, $layout_options );
                $layout_content = $this->layout_obj->ays_arp_generate_layout_content( $posts );
                break;
        }

        $content[] = $layout_content;

    	$content = implode( '', $content );

    	return $content;
    }

    public function get_styles(){
		
		$content = array();
        $content[] = '<style type="text/css">';

    	// Thumbnail width
    	$thumbnail_width = '300px';
    	if ( $this->options[ $this->name_prefix . 'under_posts_thumbnail_width' ] != '' ) {
    		$thumbnail_width = $this->options[ $this->name_prefix . 'under_posts_thumbnail_width' ] .'px;';
    	}

    	// Thumbnail height
    	$thumbnail_height = '300px';
    	if ( $this->options[ $this->name_prefix . 'under_posts_thumbnail_height' ] != '' ) {
    		$thumbnail_height = $this->options[ $this->name_prefix . 'under_posts_thumbnail_height' ] .'px;';
		}

        // Thumbnail Width / Height
        $thumbnail_width_height = '';
        if ( ! $this->options[ $this->name_prefix . 'under_posts_thumbnail_responsive_width_height' ] ) {
            $thumbnail_width_height_arr = array();

            $thumbnail_width_height_arr[] = 'width: ' . $thumbnail_width;
            $thumbnail_width_height_arr[] = 'height:' . $thumbnail_height;

            if ( $this->options[ $this->name_prefix . 'under_posts_layouts' ] == 'grid' ) {
                $thumbnail_width_height_arr = array();
            }
            
            $thumbnail_width_height = implode( '', $thumbnail_width_height_arr );
        }

        $thumbnail_columns_count = 3;
        if ( $this->options[ $this->name_prefix . 'under_posts_thumbnail_columns_count' ] != 0 ) {
            $thumbnail_columns_count = absint( $this->options[ $this->name_prefix . 'under_posts_thumbnail_columns_count' ] );
        }

        $column_width = intval( floor(100 / $thumbnail_columns_count) );

        $width = "100%";

        $content[] = '
            #' . $this->html_class_prefix . 'under-posts-container-' . $this->unique_id_in_class . ' {
                width: ' . $width . ';
                word-break: break-word;
            }

            #' . $this->html_class_prefix . 'under-posts-container-' . $this->unique_id_in_class . ' .' . $this->html_class_prefix . 'under-post {
                width: calc('. $column_width .'% - 10px);
                padding: 10px;
            }

            #' . $this->html_class_prefix . 'under-posts-container-' . $this->unique_id_in_class . ' .' . $this->html_class_prefix . 'under-post-img-row .' . $this->html_class_prefix . 'under-post-img {
			    object-fit: cover;
			    object-position: center center;
                ' . $thumbnail_width_height . '
            }

            #' . $this->html_class_prefix . 'under-posts-container-' . $this->unique_id_in_class . ' .' . $this->html_class_prefix . 'under-posts-container-title,
            #' . $this->html_class_prefix . 'under-posts-container-' . $this->unique_id_in_class . ' .' . $this->html_class_prefix . 'under-post-title  .' . $this->html_class_prefix . 'under-post-link,
            #' . $this->html_class_prefix . 'under-posts-container-' . $this->unique_id_in_class . ' .' . $this->html_class_prefix . 'under-post-excerpt-row {
                color: ' . $this->options[ $this->name_prefix . 'under_posts_text_color' ] . ';
            }

            #' . $this->html_class_prefix . 'under-posts-container-' . $this->unique_id_in_class . ' .' . $this->html_class_prefix . 'under-post-date-author-row {
                color: ' . Advanced_Related_Posts_Data::hex2rgba( $this->options[ $this->name_prefix . 'under_posts_text_color' ] , 0.7 ) . ';
            }

            ';

        // Layouts CSS
        if ( ! is_null( $this->layout_obj ) ) {
            $content[] = $this->layout_obj->get_leyout_styles();
        }
    	
    	$content[] = '</style>';

    	$content = implode( '', $content );

    	return $content;
    }

}