<?php
/**
 * Portfolio Grid
 * 
 * Creates a grid of portfolio excerpts
 */
if ( ! defined( 'ABSPATH' ) ) {  exit;  }    // Exit if accessed directly


if ( ! class_exists( 'avia_sc_portfolio' ) )
{
	class avia_sc_portfolio extends aviaShortcodeTemplate
	{
		/**
		 * Needed for unique ID if no id specified
		 * 
		 * @since 4.5.7.2
		 * @var int 
		 */
		static protected $portfolio_count = 0;

		/**
		 * Create the config array for the shortcode button
		 */
		function shortcode_insert_button()
		{
			$this->config['version']		= '1.0';
			$this->config['self_closing']	= 'yes';

			$this->config['name']		= __( 'Portfolio Grid', 'avia_framework' );
			$this->config['tab']		= __( 'Content Elements', 'avia_framework' );
			$this->config['icon']		= AviaBuilder::$path['imagesURL'] . 'sc-portfolio.png';
			$this->config['order']		= 38;
			$this->config['target']		= 'avia-target-insert';
			$this->config['shortcode'] 	= 'av_portfolio';
			$this->config['tooltip'] 	= __( 'Creates a grid of portfolio excerpts', 'avia_framework' );
			$this->config['disabling_allowed'] = true;
			$this->config['id_name']	= 'id';
			$this->config['id_show']	= 'yes';
			$this->config['linkpickers']	= array( 'link' );		//needed when theme support avia_template_builder_custom_post_type_grid
		}

		function extra_assets()
		{
			//start sessions - only necessary for correct breadcrumb nav on single portfolio pages
			if( ! is_admin() && ! current_theme_supports( 'avia_no_session_support' ) && ! session_id() ) 
			{
				session_start();
			}

			//load css
			wp_enqueue_style( 'avia-module-portfolio', AviaBuilder::$path['pluginUrlRoot'] . 'avia-shortcodes/portfolio/portfolio.css', array( 'avia-layout' ), false );

			//load js
			wp_enqueue_script( 'avia-module-isotope', AviaBuilder::$path['pluginUrlRoot'] . 'avia-shortcodes/portfolio/isotope.js', array( 'avia-shortcodes' ), false , true );
			wp_enqueue_script( 'avia-module-portfolio', AviaBuilder::$path['pluginUrlRoot'] . 'avia-shortcodes/portfolio/portfolio.js', array( 'avia-shortcodes' ), false , true );
		}

		/**
		 * Popup Elements
		 *
		 * If this function is defined in a child class the element automatically gets an edit button, that, when pressed
		 * opens a modal window that allows to edit the element properties
		 *
		 * @return void
		 */
		function popup_elements()
		{
			$this->elements = array(
					
				array(
						'type' 	=> 'tab_container', 
						'nodescription' => true
					),
						
				array(
						'type' 	=> 'tab',
						'name'  => __( 'Content', 'avia_framework' ),
						'nodescription' => true
					),
				
					array(
							'type'			=> 'template',
							'template_id'	=> 'toggle_container',
							'templates_include'	=> array(
													$this->popup_key( 'content_entries' ),
													$this->popup_key( 'content_filter' ),
													$this->popup_key( 'content_sorting' ),
													$this->popup_key( 'content_excerpt' )
												),
							'nodescription' => true
						),
				
				array(
						'type' 	=> 'tab_close',
						'nodescription' => true
					),

				array(
						'type' 	=> 'tab',
						'name'  => __( 'Styling', 'avia_framework' ),
						'nodescription' => true
					),
				
					array(
							'type'			=> 'template',
							'template_id'	=> 'toggle_container',
							'templates_include'	=> array(
													$this->popup_key( 'styling_grid' ),
													$this->popup_key( 'styling_columns' ),
													$this->popup_key( 'styling_pagination' )
												),
							'nodescription' => true
						),
				
				array(
						'type' 	=> 'tab_close',
						'nodescription' => true
					),
				
				array(
						'type' 	=> 'tab',
						'name'  => __( 'Advanced', 'avia_framework' ),
						'nodescription' => true
					),
				
					array(
							'type' 	=> 'toggle_container',
							'nodescription' => true
						),
				
						array(	
								'type'			=> 'template',
								'template_id'	=> $this->popup_key( 'advanced_link' )
							),

						array(	
								'type'			=> 'template',
								'template_id'	=> 'screen_options_toggle'
							),
				
						array(	
								'type'			=> 'template',
								'template_id'	=> 'developer_options_toggle',
								'args'			=> array( 'sc' => $this )
							),
				
					array(
							'type' 	=> 'toggle_container_close',
							'nodescription' => true
						),
				
				array(
						'type' 	=> 'tab_close',
						'nodescription' => true
					),

				array(
						'type' 	=> 'tab_container_close',
						'nodescription' => true
					)

				);
		}
		
		/**
		 * Create and register templates for easier maintainance
		 * 
		 * @since 4.6.4
		 */
		protected function register_dynamic_templates()
		{
			
			/**
			 * Content Tab
			 * ===========
			 */
			
			if( ! current_theme_supports( 'avia_template_builder_custom_post_type_grid' ) )
			{
				$c = array(
						array(	
							'name' 		=> __( 'Which categories should be used for the portfolio?', 'avia_framework' ),
							'desc' 		=> __( 'You can select multiple categories here. The Page will then show posts from only those categories.', 'avia_framework' ),
							'id' 		=> 'categories',
							'type' 		=> 'select',
							'multiple'	=> 6,
							'taxonomy' 	=> 'portfolio_entries',
							'subtype' 	=> 'cat'
						)
				
				);
			}
			else
			{
				$c = array(
			            array(
							'name' 	=> __( 'Which Entries?', 'avia_framework' ),
							'desc' 	=> __( 'Select which entries should be displayed by selecting a taxonomy', 'avia_framework' ),
							'id' 	=> 'link',
							'fetchTMPL'	=> true,
							'type' 	=> 'linkpicker',
							'std' 	=> 'category',
							'multiple'	=> 6,
							'subtype'	=> array( __( 'Display Entries from:', 'avia_framework' ) => 'taxonomy' )
						)
					);


				if( current_theme_supports( 'add_avia_builder_post_type_option' ) )
				{
					$element = array(	
								'type'			=> 'template',
								'template_id'	=> 'avia_builder_post_type_option'
							);
						
					array_unshift( $c, $element );
				}
			}
			
			
			$template = array(
							array(	
								'type'			=> 'template',
								'template_id'	=> 'toggle',
								'title'			=> __( 'Select Entries', 'avia_framework' ),
								'content'		=> $c 
							),
					);
			
			AviaPopupTemplates()->register_dynamic_template( $this->popup_key( 'content_entries' ), $template );
			
			$c = array(
						array(	
							'type'			=> 'template',
							'template_id' 	=> 'date_query',
						),
				
				);
			
			$template = array(
							array(	
								'type'			=> 'template',
								'template_id'	=> 'toggle',
								'title'			=> __( 'Filter', 'avia_framework' ),
								'content'		=> $c 
							),
					);
			
			AviaPopupTemplates()->register_dynamic_template( $this->popup_key( 'content_filter' ), $template );
			
			$c = array(
						array(
							'name' 	=> __( 'Sortable?', 'avia_framework' ),
							'desc' 	=> __( 'Should the sorting options based on categories be displayed?', 'avia_framework' ),
							'id' 	=> 'sort',
							'type' 	=> 'select',
							'std' 	=> 'yes',
							'subtype'	=> array(
												__( 'Yes, display sort options', 'avia_framework' )			=> 'yes',
												__( 'Yes, display sort options and currently active categories', 'avia_framework' ) => 'yes-tax',
												__( 'No, do not display sort options', 'avia_framework' )	=> 'no'
											)
						),
				
						array(
							'name'	=> __( 'Order by', 'avia_framework' ),
							'desc'	=> __( 'You can order the result by various attributes like creation date, title, author etc', 'avia_framework' ),
							'id'	=> 'query_orderby',
							'type'	=> 'select',
							'std'	=> 'date',
							'subtype'	=> array(
												__( 'Date', 'avia_framework' )				=> 'date',
												__( 'Title', 'avia_framework' )				=> 'title',
												__( 'Random', 'avia_framework' )			=> 'rand',
												__( 'Author', 'avia_framework' )			=> 'author',
												__( 'Name (Post Slug)', 'avia_framework' )	=> 'name',
												__( 'Last modified', 'avia_framework' )		=> 'modified',
												__( 'Comment Count', 'avia_framework' )		=> 'comment_count',
												__( 'Page Order', 'avia_framework' )		=> 'menu_order'
											)
						),
            			
						array(
							'name'	=> __( 'Display order', 'avia_framework' ),
							'desc'	=> __( 'Display the results either in ascending or descending order', 'avia_framework' ),
							'id'	=> 'query_order',
							'type'	=> 'select',
							'std'	=> 'DESC',
							'subtype'	=> array(
												__( 'Ascending Order', 'avia_framework' )	=> 'ASC',
												__( 'Descending Order', 'avia_framework' )	=> 'DESC'
											)
						)
				);
			
			$template = array(
							array(	
								'type'			=> 'template',
								'template_id'	=> 'toggle',
								'title'			=> __( 'Sorting', 'avia_framework' ),
								'content'		=> $c 
							),
					);
			
			AviaPopupTemplates()->register_dynamic_template( $this->popup_key( 'content_sorting' ), $template );
			
			$c = array(
						array(
							'name' 	=> __('Excerpt', 'avia_framework' ),
							'desc' 	=> __('Display Excerpt and Title below the preview image?', 'avia_framework' ),
							'id' 	=> 'contents',
							'type' 	=> 'select',
							'std' 	=> 'yes',
							'subtype'	=> array(
												__( 'Title and Excerpt', 'avia_framework' )			=> 'excerpt',
												__( 'Only Title', 'avia_framework' )				=> 'title',
												__( 'Only excerpt', 'avia_framework' )				=> 'only_excerpt',
												__( 'No Title and no excerpt', 'avia_framework' )	=> 'no'
											)
						)

					);
			
			$template = array(
							array(	
								'type'			=> 'template',
								'template_id'	=> 'toggle',
								'title'			=> __( 'Excerpt', 'avia_framework' ),
								'content'		=> $c 
							),
					);
			
			AviaPopupTemplates()->register_dynamic_template( $this->popup_key( 'content_excerpt' ), $template );
			
			/**
			 * Styling Tab
			 * ===========
			 */
			
			$c = array(
				
//				    
//					array(
//						'name' 	=> __( 'Style?', 'avia_framework' ),
//						'desc' 	=> __( 'Choose the style of the entries here', 'avia_framework' ),
//						'id' 	=> 'style',
//						'type' 	=> 'select',
//						'std' 	=> '',
//						'subtype'	=> array( 
//											__( 'Default Style', 'avia_framework' )			=> '',
//											__( 'Circle Image Stlye', 'avia_framework' )	=> 'grid-circle'
//										)
//					),
//					
					array(
						'name' 	=> __( 'Portfolio Grid Image Size', 'avia_framework' ),
						'desc' 	=> __( 'Set the image size of the Portfolio Grid images', 'avia_framework' ),
						'id' 	=> 'preview_mode',
						'type' 	=> 'select',
						'std' 	=> 'auto',
						'subtype'	=> array(
											__( 'Set the Portfolio Grid image size automatically based on column or layout width', 'avia_framework' )	=> 'auto',
											__( 'Choose the Portfolio Grid image size manually (select thumbnail size)', 'avia_framework' )				=> 'custom'
										)
					),

					array(
						'name' 	=> __( 'Select custom image size', 'avia_framework' ),
						'desc' 	=> __( 'Choose image size for Portfolio Grid Images', 'avia_framework' ) . '<br/><small>' . __( '(Note: Images will be scaled to fit for the amount of columns chosen above)', 'avia_framework' ) . '</small>',
						'id' 	=> 'image_size',
						'type' 	=> 'select',
						'required' 	=> array( 'preview_mode', 'equals', 'custom' ),
						'std' 	=> 'portfolio',
						'subtype'	=>  AviaHelper::get_registered_image_sizes( array( 'logo', 'thumbnail', 'widget' ) )
                    ),
				
				);
			
			$template = array(
							array(	
								'type'			=> 'template',
								'template_id'	=> 'toggle',
								'title'			=> __( 'Grid Settings', 'avia_framework' ),
								'content'		=> $c 
							),
					);
			
			AviaPopupTemplates()->register_dynamic_template( $this->popup_key( 'styling_grid' ), $template );
			
			$responsive = array(
									__( 'Use Default', 'avia_framework' )	=> '',
									__( '1 Column', 'avia_framework' )		=> '1',
									__( '2 Columns', 'avia_framework' )		=> '2',
									__( '3 Columns', 'avia_framework' )		=> '3',
									__( '4 Columns', 'avia_framework' )		=> '4'
								);
			
			$subtype = array(
							'default'	=> array(
												__( '1 Column', 'avia_framework' )	=> '1',
												__( '2 Columns', 'avia_framework' )	=> '2',
												__( '3 Columns', 'avia_framework' )	=> '3',
												__( '4 Columns', 'avia_framework' )	=> '4',
												__( '5 Columns', 'avia_framework' )	=> '5',
												__( '6 Columns', 'avia_framework' )	=> '6'
											),
							'medium'	=> $responsive,		
							'small'		=> $responsive,	
							'mini'		=> $responsive
						);
			
			$c = array(

						array(	
								'type'			=> 'template',
								'template_id'	=> 'columns_count_icon_switcher',
								'subtype'		=> $subtype,
								'std'			=> array(
														'default'	=> '4',
														'medium'	=> '',
														'small'		=> '',
														'mini'		=> ''
													)
							),
				
						 array(
								'name' 	=> __( '1 Column layout', 'avia_framework' ),
								'desc' 	=> __( 'Choose the 1 column layout', 'avia_framework' ),
								'id' 	=> 'one_column_template',
								'type' 	=> 'select',
								'required'	=> array( 'columns', 'equals', '1' ),
								'std' 	=> 'special',
								'subtype'	=> array(
													__( 'Use special 1 column layout (side by side)', 'avia_framework' )	=> 'special',
													__( 'Use default portfolio layout', 'avia_framework' )					=> 'default'
												)
							),
				
				);
			
			$template = array(
							array(	
								'type'			=> 'template',
								'template_id'	=> 'toggle',
								'title'			=> __( 'Columns', 'avia_framework' ),
								'content'		=> $c 
							),
					);
			
			AviaPopupTemplates()->register_dynamic_template( $this->popup_key( 'styling_columns' ), $template );
			
			$c = array(
						array(
							'name' 	=> __( 'Post Number', 'avia_framework' ),
							'desc' 	=> __( 'How many items should be displayed per page?', 'avia_framework' ),
							'id' 	=> 'items',
							'type' 	=> 'select',
							'std' 	=> '16',
							'subtype' => AviaHtmlHelper::number_array( 1, 100, 1, array( 'All' => '-1' ) )
						),

						array(
							'name' 	=> __( 'Pagination', 'avia_framework' ),
							'desc' 	=> __( 'Should a pagination be displayed?', 'avia_framework' ),
							'id' 	=> 'paginate',
							'type' 	=> 'select',
							'std' 	=> 'yes',
							'subtype'	=> array(
												__( 'yes', 'avia_framework' )	=> 'yes',
												__( 'no', 'avia_framework' )	=> 'no'
											)
						),

				);
			
			$template = array(
							array(	
								'type'			=> 'template',
								'template_id'	=> 'toggle',
								'title'			=> __( 'Pagination', 'avia_framework' ),
								'content'		=> $c 
							),
					);
			
			AviaPopupTemplates()->register_dynamic_template( $this->popup_key( 'styling_pagination' ), $template );
			
			/**
			 * Advanced Tab
			 * ============
			 */
			
			$c = array(
						array(
							'name' 	=> __( 'Link Handling', 'avia_framework' ),
							'desc' 	=> __( 'When clicking on a portfolio item you can choose to open the link to the single entry, open a preview (aka AJAX Portfolio) or show a bigger version of the image in a lightbox overlay', 'avia_framework' ),
							'id' 	=> 'linking',
							'type' 	=> 'select',
							'std' 	=> '',
							'subtype'	=> array(
												__( 'Open the entry on a new page', 'avia_framework' )							=> '',
												__( 'Open a preview of the entry (known as AJAX Portfolio)', 'avia_framework' )	=> 'ajax',
												__( 'Display the big image in a lightbox', 'avia_framework' )					=> 'lightbox'
											)
						),

				);
			
			$template = array(
							array(	
								'type'			=> 'template',
								'template_id'	=> 'toggle',
								'title'			=> __( 'Link Setting', 'avia_framework' ),
								'content'		=> $c 
							),
					);
			
			AviaPopupTemplates()->register_dynamic_template( $this->popup_key( 'advanced_link' ), $template );
		}


		/**
		 * Editor Element - this function defines the visual appearance of an element on the AviaBuilder Canvas
		 * Most common usage is to define some markup in the $params['innerHtml'] which is then inserted into the drag and drop container
		 * Less often used: $params['data'] to add data attributes, $params['class'] to modify the className
		 *
		 *
		 * @param array $params this array holds the default values for $content and $args.
		 * @return $params the return array usually holds an innerHtml key that holds item specific markup.
		 */
		function editor_element( $params )
		{
			
			$params = parent::editor_element( $params );
			$params['innerHtml'] .=	AviaPopupTemplates()->get_html_template( 'alb_element_fullwidth_stretch' );

			$params['content'] 	 = null; //remove to allow content elements

			return $params;
		}



		/**
		 * Frontend Shortcode Handler
		 *
		 * @param array $atts array of attributes
		 * @param string $content text within enclosing form of shortcode element
		 * @param string $shortcodename the shortcode found, when == callback name
		 * @return string $output returns the modified html string
		 */
		function shortcode_handler( $atts, $content = '', $shortcodename = '', $meta = '' )
		{
			extract( AviaHelper::av_mobile_sizes( $atts ) ); //return $av_font_classes, $av_title_font_classes and $av_display_classes 

			if( current_theme_supports( 'avia_template_builder_custom_post_type_grid' ) )
			{
				$defaults = array(
								'categories'	=> '',
								'taxonomy'		=> '',
								'post_type'		=> ''
							);
			}
			else
			{
				$defaults = array(
								'categories'	=> ''
							);
			}
			
			$atts = array_merge( $defaults, $atts );
			
			if( current_theme_supports( 'avia_template_builder_custom_post_type_grid' ) )
			{
				if( isset( $atts['link'] ) )
				{
					$atts['link'] = explode( ',', $atts['link'], 2 );
					$atts['taxonomy'] = $atts['link'][0];

					if( isset( $atts['link'][1] ) )
					{
						$atts['categories'] = $atts['link'][1];
					}
				}

				if( empty( $atts['post_type'] ) || ! current_theme_supports( 'add_avia_builder_post_type_option' ) )
				{
					$atts['post_type'] = get_post_types();
				}

				if( is_string( $atts['post_type'] ) ) 
				{
					$atts['post_type'] = explode( ',', $atts['post_type'] );
				}
			}
			else
			{
				/**
				 * @used_by				config-wpml\config.php		avia_translate_object_ids()
				 * @since 4.6.4
				 * @param string
				 * @param string
				 * @param avia_sc_portfolio $this
				 * @return string
				 */
				$atts['categories'] = apply_filters( 'avf_alb_taxonomy_values', $atts['categories'], 'portfolio_entries' );
			}
				
			self::$portfolio_count ++;

			$el_id = ! empty( $meta['custom_el_id'] ) ? $meta['custom_el_id'] : ' id="av-sc-portfolio-' . self::$portfolio_count . '" ';
			$atts['class'] = ! empty( $meta['custom_class'] ) ? $meta['custom_class'] : '';
			$atts['el_id'] = '';
			$atts['fullscreen'] = ShortcodeHelper::is_top_level();
			if( ! $atts['fullscreen'] )
			{
				$atts['el_id'] = $el_id;
			}

			$grid = new avia_post_grid( $atts );
			$grid->query_entries();
			$portfolio_html = $grid->html();

			if( ! ShortcodeHelper::is_top_level() ) 
			{
				return $portfolio_html;
			}
				
			$params['class'] = "main_color avia-no-border-styling avia-fullwidth-portfolio {$av_display_classes} {$meta['el_class']}";
			$params['open_structure'] = false;
			$params['id'] = AviaHelper::save_string( $meta['custom_id_val'] , '-', 'av-sc-portfolio-' . self::$portfolio_count );
			$params['custom_markup'] = $meta['custom_markup'];

			//we dont need a closing structure if the element is the first one or if a previous fullwidth element was displayed before
			if(isset($meta['index']) && $meta['index'] == 0) $params['close'] = false;
			if(!empty($meta['siblings']['prev']['tag']) && in_array($meta['siblings']['prev']['tag'], AviaBuilder::$full_el_no_section )) $params['close'] = false;

			$output  = avia_new_section( $params );
			$output .= $portfolio_html;
			$output .= avia_section_after_element_content( $meta , 'after_portfolio' );

			return $output;
		}
	}
}




if ( ! class_exists( 'avia_post_grid' ) )
{
	class avia_post_grid
	{
		/**
		 *
		 * @var int 
		 */
		static protected $grid = 0;
		
		/**
		 *
		 * @var array 
		 */
		static protected $preview_template = array();
		
		/**
		 *
		 * @var array 
		 */
		protected $atts;
		
		/**
		 *
		 * @var WP_Query 
		 */
		protected $entries;
		
		/**
		 *
		 * @var array 
		 */
		protected $screen_options;

		/**
		 * 
		 * @param type $atts
		 */
		public function __construct( $atts = array() )
		{
			$this->entries = null;
			$this->screen_options = AviaHelper::av_mobile_sizes( $atts );
			
			$this->atts = shortcode_atts( array(	
							'style'					=> '',
							'linking'				=> '',
							'columns'				=> '4',
							'items'					=> '16',
							'contents'				=> 'title',
							'sort'					=> 'yes',
							'paginate'				=> 'yes',
							'categories'			=> '',
							'preview_mode'			=> 'auto',
							'image_size'			=> 'portfolio',
							'post_type'				=> 'portfolio',
							'taxonomy'				=> 'portfolio_entries',
							'one_column_template'	=> 'special',
							'set_breadcrumb'		=> true, //no shortcode option for this, modifies the breadcrumb nav, must be false on taxonomy overview
							'class'					=> '',
							'el_id'					=> '',
							'custom_markup'			=> '',
							'fullscreen'			=> false,
							'query_orderby'			=> 'date',
							'query_order'			=> 'DESC',
							'date_filter'			=> '',	
							'date_filter_start'		=> '',
							'date_filter_end'		=> '',
							'date_filter_format'	=> 'yy/mm/dd',		//	'yy/mm/dd' | 'dd-mm-yy'	| yyyymmdd

						), $atts, 'av_portfolio' );



		    if( $this->atts['linking'] == 'ajax' )
			{
				add_action( 'wp_footer' , array( $this, 'print_preview_templates' ) );
			}
		}
		
		/**
		 * 
		 * @since 4.5.7.2
		 */
		public function __destruct() 
		{
			unset( $this->atts );
			unset( $this->screen_options );
			unset( $this->entries );
		}

		/**
		 * enerates the html of the post grid
		 * 
		 * @since < 4.0
		 * @return string
		 */
		public function html()
		{
			if( empty( $this->entries ) || empty( $this->entries->posts ) ) 
			{
				return '';
			}
			
			avia_post_grid::$grid ++;
			
			extract( $this->screen_options ); //return $av_font_classes, $av_title_font_classes and $av_display_classes
			extract( $this->atts );
			 
			
			$container_id 		= avia_post_grid::$grid;
			$extraClass 		= 'first';
			$grid 				= 'one_fourth';
			if( $preview_mode == 'auto' ) 
			{
				$image_size = 'portfolio';
			}
			$post_loop_count 	= 1;
			$loop_counter		= 1;
			$output				= '';
			$style_class		= empty( $style ) ? 'no_margin' : $style;
			$total				= $this->entries->post_count % 2 ? 'odd' : 'even';
			$post_type_paginate = array();

			if( $set_breadcrumb && is_page() )
			{
				if( ! is_array( $post_type ) )
				{
					$_SESSION["avia_{$post_type}"] = get_the_ID();
					$post_type_paginate[] = $post_type;
				}
				else
				{
					$filtered = array();
					foreach( $this->entries->posts as $entry )
					{
						if( ! $entry instanceof WP_Post )
						{
							continue;
						}
						
						if( ! in_array( $entry->post_type, $filtered ) )
						{
							$filtered[] = $entry->post_type;
						}
					}
					
					foreach( $filtered as $pt ) 
					{
						$_SESSION["avia_{$pt}"] = get_the_ID();
						$post_type_paginate[] = $pt;
					}
				}
			}

			switch( $columns )
			{
				case '1': 
					$grid = 'av_fullwidth';  
					if( $preview_mode == 'auto' ) 
					{
						$image_size = 'featured';
					}
					break;
				case '2': 
					$grid = 'av_one_half';   
					break;
				case '3': 
					$grid = 'av_one_third';  
					break;
				case '4': 
					$grid = 'av_one_fourth'; 
					if( $preview_mode == 'auto' ) 
					{
						$image_size = 'portfolio_small';
					}
					break;
				case '5': 
					$grid = 'av_one_fifth';  
					if( $preview_mode == 'auto' ) 
					{
						$image_size = 'portfolio_small';
					}
					break;
				case '6': 
					$grid = 'av_one_sixth';  
					if( $preview_mode == 'auto' ) 
					{
						$image_size = 'portfolio_small';
					}
					break;
			}
			
			if( $fullscreen && $preview_mode =='auto' && $image_size == 'portfolio_small' ) 
			{
				$image_size = 'portfolio';
			}

			if( $sort != 'no' )
			{
				$output .= '<div ' . $el_id . ' class="av-portfolio-grid-sorting-container">';
				$el_id = '';
			}
			
			$output .= $sort != 'no' ? $this->sort_buttons($this->entries->posts, $this->atts) : '';

			if( $linking == 'ajax' )
			{
				global $avia_config;
				
				$container_class = $fullscreen ? 'container' : '';
				
				$output .= "<div class='portfolio_preview_container {$container_class}' data-portfolio-id='{$container_id}'>
								<div class='ajax_controlls iconfont'>
									<a href='#prev' class='ajax_previous' 	" . av_icon_string('prev') . "></a>
									<a href='#next' class='ajax_next'		" . av_icon_string('next') . "></a>
									<a class='avia_close' href='#close'		" . av_icon_string('close') . "></a>
								</div>
								<div class='portfolio-details-inner'></div>
							</div>";
			}
			
			$output .= "<div {$el_id} class='{$class} grid-sort-container isotope {$av_display_classes} {$av_column_classes} {$style_class}-container with-{$contents}-container grid-total-{$total} grid-col-{$columns} grid-links-{$linking}' data-portfolio-id='{$container_id}'>";

			foreach( $this->entries->posts as $index => $entry )
			{
				$the_id 	= $entry->ID;
				$parity		= $post_loop_count % 2 ? 'odd' : 'even';
				$last       = $this->entries->post_count == $post_loop_count ? ' post-entry-last ' : '';
				$post_class = "post-entry post-entry-{$the_id} grid-entry-overview grid-loop-{$post_loop_count} grid-parity-{$parity} {$last}";
				$sort_class = $this->sort_cat_string( $the_id, $this->atts );

				switch( $linking )
				{
					case 'lightbox':  $link = aviaHelper::get_url('lightbox', get_post_thumbnail_id($the_id));	break;
					default: 		  $link = get_permalink($the_id); break;
				}

				$title_link  = get_permalink( $the_id );
				$custom_link = get_post_meta( $the_id, '_portfolio_custom_link', true ) != '' ? get_post_meta( $the_id, '_portfolio_custom_link_url', true ) : false;

				if( $custom_link )
				{
					$title_link = '';
					$link = $custom_link;
				}

				$excerpt 	= '';
				$title 		= '';

				switch($contents)
				{
					case 'excerpt': $excerpt = $entry->post_excerpt; $title = $entry->post_title; break;
					case 'title': $excerpt = ''; $title = $entry->post_title;  break;
					case 'only_excerpt': $excerpt = $entry->post_excerpt; $title = ''; break;
					case 'no': $excerpt = ''; $title = ''; break;
				}

				$custom_overlay = apply_filters('avf_portfolio_custom_overlay', '', $entry);
				$link_markup 	= apply_filters('avf_portfolio_custom_image_container', array( "a href='{$link}' title='" . esc_attr( strip_tags( $title ) ) . "' ",'a'), $entry );

				$title 			= apply_filters('avf_portfolio_title', $title, $entry);
				$title_link    	= apply_filters('avf_portfolio_title_link', $title_link, $entry);
				$image_attrs    = apply_filters('avf_portfolio_image_attrs', array(), $entry);
				
				
				
                if( $columns == '1' && $one_column_template == 'special' )
                {
                    $extraClass .= ' special_av_fullwidth ';

                    $output .= "<div data-ajax-id='{$the_id}' class=' grid-entry flex_column isotope-item all_sort {$style_class} {$post_class} {$sort_class} {$grid} {$extraClass}'>";
                    $output .= "<article class='main_color inner-entry' ".avia_markup_helper(array('context' => 'entry','echo'=>false, 'id'=>$the_id, 'custom_markup'=>$custom_markup)).">";
                    $output .= apply_filters('avf_portfolio_extra', '', $entry);

                    $output .= "<div class='av_table_col first portfolio-entry grid-content'>";

                    if( ! empty( $title ) )
                    {
                        $markup = avia_markup_helper(array('context' => 'entry_title','echo'=>false, 'id'=>$the_id, 'custom_markup'=>$custom_markup));
						
						$default_heading = 'h2';
						$args = array(
									'heading'		=> $default_heading,
									'extra_class'	=> ''
								);
						
						$extra_args = array( $this, $index, 'one_column_template_special' );

						/**
						 * @since 4.5.5
						 * @return array
						 */
						$args = apply_filters( 'avf_customize_heading_settings', $args, __CLASS__, $extra_args );

						$heading = ! empty( $args['heading'] ) ? $args['heading'] : $default_heading;
						$css = ! empty( $args['extra_class'] ) ? $args['extra_class'] : '';
						
                        $output .= '<header class="entry-content-header">';
						$output .= "<{$heading} class='portfolio-grid-title entry-title {$css}' {$markup}>";
                        
                        if(!empty($title_link))
                        {
                        	$output .= "<a href='{$title_link}'>" . $title . "</a>";
                        }
                        else
                        {
                        	$output .= $title;
                        }
                        $output .= "</{$heading}></header>";
                    }

                    if(!empty($excerpt))
                    {
                        $markup = avia_markup_helper(array('context' => 'entry_content','echo'=>false, 'id'=>$the_id, 'custom_markup'=>$custom_markup));

                        $output .= "<div class='entry-content-wrapper'>";
                        $output .= "<div class='grid-entry-excerpt entry-content' $markup>".$excerpt."</div>";
                        $output .= '</div>';
                    }
                    $output .= '<div class="avia-arrow"></div>';
                    $output .= '</div>';

                    $image = get_the_post_thumbnail( $the_id, $image_size, $image_attrs );
                    if(!empty($image))
                    {
                        $output .= "<div class='av_table_col portfolio-grid-image'>";
                        $output .= "<".$link_markup[0]." data-rel='grid-".avia_post_grid::$grid."' class='grid-image avia-hover-fx'>".$custom_overlay.$image."</".$link_markup[1].">";
                        $output .= '</div>';
                    }
                    $output .= '<footer class="entry-footer"></footer>';
                    $output .= '</article>';
                    $output .= '</div>';
                }
                else
                {
                    $extraClass .= ' default_av_fullwidth ';

                    $output .= "<div data-ajax-id='{$the_id}' class=' grid-entry flex_column isotope-item all_sort {$style_class} {$post_class} {$sort_class} {$grid} {$extraClass}'>";
                    $output .= "<article class='main_color inner-entry' ".avia_markup_helper(array('context' => 'entry','echo'=>false, 'id'=>$the_id, 'custom_markup'=>$custom_markup)).">";
                    $output .= apply_filters('avf_portfolio_extra', '', $entry);
                    $output .= "<".$link_markup[0]." data-rel='grid-".avia_post_grid::$grid."' class='grid-image avia-hover-fx'>".$custom_overlay.get_the_post_thumbnail( $the_id, $image_size, $image_attrs )."</".$link_markup[1].">";
                    $output .= !empty($title) || !empty($excerpt) ? "<div class='grid-content'><div class='avia-arrow'></div>" : '';

                    if( ! empty( $title ) )
                    {
                        $markup = avia_markup_helper(array('context' => 'entry_title','echo'=>false, 'id'=>$the_id, 'custom_markup'=>$custom_markup));
						
						$default_heading = 'h3';
						$args = array(
									'heading'		=> $default_heading,
									'extra_class'	=> ''
								);
						
						$extra_args = array( $this, $index, 'not_one_column_template_special' );

						/**
						 * @since 4.5.5
						 * @return array
						 */
						$args = apply_filters( 'avf_customize_heading_settings', $args, __CLASS__, $extra_args );

						$heading = ! empty( $args['heading'] ) ? $args['heading'] : $default_heading;
						$css = ! empty( $args['extra_class'] ) ? $args['extra_class'] : '';
						
                        $output .= '<header class="entry-content-header">';
                        $output .= "<{$heading} class='grid-entry-title entry-title {$css}' $markup>";
                        
                        if(!empty($title_link))
                        {
                        	$output .= "<a href='{$title_link}' title='".esc_attr(strip_tags($title))."'>".$title."</a>";
                        }
                        else
                        {
                        	$output .= $title;
                        }
                        
                        $output .= "</{$heading}></header>";
                    }
                    $output .= !empty($excerpt) ? "<div class='grid-entry-excerpt entry-content' ".avia_markup_helper(array('context'=>'entry_content','echo'=>false, 'id'=>$the_id, 'custom_markup'=>$custom_markup)).">".$excerpt."</div>" : '';
                    $output .= !empty($title) || !empty($excerpt) ? "</div>" : '';
                    $output .= '<footer class="entry-footer"></footer>';
                    $output .= '</article>';
                    $output .= '</div>';
                }


				$loop_counter ++;
				$post_loop_count ++;
				$extraClass = '';

				if($loop_counter > $columns)
				{
					$loop_counter = 1;
					$extraClass = 'first';
				}
			}

			$output .= '</div>';
			
			if( $sort != 'no' )
			{
				$output .= '</div>   <!--   class="av-portfolio-grid-sorting-container"  -->';
			}

			//append pagination
			if( $paginate == 'yes' && $avia_pagination = avia_pagination( $this->entries->max_num_pages, 'nav' ) ) 
			{
				$post_type_paginate = array_map( function( $value ) { return 'pagination-' . $value; }, $post_type_paginate );
				$post_type_paginate = implode( ' ', $post_type_paginate );
				$output .= "<div class='pagination-wrap {$post_type_paginate} {$av_display_classes}'>{$avia_pagination}</div>";
			}

			return $output;
		}


		/**
		 * Generates the html for the sort buttons
		 * 
		 * @param array $entries
		 * @param array $params
		 * @return string
		 */
		protected function sort_buttons( $entries, $params )
		{
			//get all categories that are actually listed on the page
			$categories = get_categories( array(
								'taxonomy'		=> $params['taxonomy'],
								'hide_empty'	=> 0
							) );

			$current_page_cats 	= array();
			$cat_count 			= array();
			$display_cats 		= is_array( $params['categories'] ) ? $params['categories'] : array_filter( explode( ',', $params['categories'] ) );

			foreach( $entries as $entry )
			{
				$current_item_cats = get_the_terms( $entry->ID, $params['taxonomy'] );
				
				if( is_array( $current_item_cats ) && ! empty( $current_item_cats ) )
				{
					foreach( $current_item_cats as $current_item_cat )
					{
						if(empty($display_cats) || in_array($current_item_cat->term_id, $display_cats))
						{
							$current_page_cats[$current_item_cat->term_id] = $current_item_cat->term_id;

							if(!isset($cat_count[$current_item_cat->term_id] ))
							{
								$cat_count[$current_item_cat->term_id] = 0;
							}

							$cat_count[$current_item_cat->term_id] ++;
						}
					}
				}
				
			}
			
			extract( $this->screen_options ); //return $av_font_classes, $av_title_font_classes and $av_display_classes 

			$output = "<div class='sort_width_container {$av_display_classes} av-sort-".$this->atts['sort']."' data-portfolio-id='".avia_post_grid::$grid."' ><div id='js_sort_items' >";
			$hide 	= count($current_page_cats) <= 1 ? 'hidden' : '';


			$first_item_name = apply_filters('avf_portfolio_sort_first_label', __('All','avia_framework' ), $params);
			$first_item_html = '<span class="inner_sort_button"><span>'.$first_item_name.'</span><small class="av-cat-count"> '.count($entries).' </small></span>';
			$output .= apply_filters('avf_portfolio_sort_heading', '', $params);
			
			
			if(strpos($this->atts['sort'], 'tax') !== false) $output .= "<div class='av-current-sort-title'>{$first_item_html}</div>";
			$output .= "<div class='sort_by_cat {$hide} '>";
			$output .= '<a href="#" data-filter="all_sort" class="all_sort_button active_sort">'.$first_item_html.'</a>';


			foreach($categories as $category)
			{
				if(in_array($category->term_id, $current_page_cats))
				{
					//fix for cyrillic, etc. characters - isotope does not support the % char
					$category->category_nicename = str_replace('%', '', $category->category_nicename);

					$output .= 	"<span class='text-sep ".$category->category_nicename."_sort_sep'>/</span>";
					$output .= 		'<a href="#" data-filter="'.$category->category_nicename.'_sort" class="'.$category->category_nicename.'_sort_button" ><span class="inner_sort_button">';
					$output .= 			"<span>".esc_html(trim($category->cat_name))."</span>";
					$output .= 			"<small class='av-cat-count'> ".$cat_count[$category->term_id]." </small></span>";
					$output .= 		'</a>';
				}
			}

			$output .= '</div></div></div>';

			return $output;
		}


		//get the categories for each post and create a string that serves as classes so the javascript can sort by those classes
		protected function sort_cat_string($the_id, $params)
		{
			$sort_classes = '';
			$item_categories = get_the_terms( $the_id, $params['taxonomy']);

			if(is_object($item_categories) || is_array($item_categories))
			{
				foreach ($item_categories as $cat)
				{
					//fix for cyrillic, etc. characters - isotope does not support the % char
					$cat->slug = str_replace('%', '', $cat->slug);
					
					$sort_classes .= $cat->slug.'_sort ';
				}
			}

			return $sort_classes;
		}

		protected function build_preview_template( $entry )
		{
			if(isset(avia_post_grid::$preview_template[$entry->ID])) return;
			avia_post_grid::$preview_template[$entry->ID] = true;

			$id 					= $entry->ID;
			$output 				= '';
			$defaults 				= array( 'ids' => get_post_thumbnail_id( $id ), 'text' => apply_filters( 'get_the_excerpt', $entry->post_excerpt) , "method" => 'gallery' , "auto" => '', "columns" => 5);
			$params['ids'] 			= get_post_meta( $id ,'_preview_ids', true);
			$params['text']		  	= get_post_meta( $id ,'_preview_text', true);
			$params['method']	  	= get_post_meta( $id ,'_preview_display', true);
			$params['interval']		= get_post_meta( $id ,'_preview_autorotation', true);
			$params['columns']      = get_post_meta( $id ,'_preview_columns', true);
			$params['preview_size'] = apply_filters('avf_ajax_preview_image_size','gallery');
			$params['autoplay']		= is_numeric($params['interval']) ? 'true' : 'false';

			$link = get_post_meta( $id ,'_portfolio_custom_link', true) != '' ? get_post_meta( $id ,'_portfolio_custom_link_url', true) : get_permalink($id);


			//merge default and params array. remove empty params with array_filter
			$params = array_merge($defaults, array_filter($params));
			
			$params = apply_filters('avf_portfolio_preview_template_params', $params, $entry);

			//set the content
			$content = str_replace(']]>', ']]&gt;', apply_filters('the_content', $params['text'] )); unset($params['text']);

			//set images
			$string = '';

			//set first class if preview images are deactivated
			$nogalleryclass = '';
			$params['ajax_request'] = true;
			switch($params['method'])
			{
				case 'gallery':

					$params['style'] =  'big_thumb';
					$params['thumb_size'] =  'square';
					foreach($params as $key => $param) $string .= $key."='".$param."' ";
					$images = do_shortcode("[av_gallery {$string}]");
				break;

				case 'slideshow':
					$params['size'] = $params['preview_size'];
					foreach($params as $key => $param) $string .= $key."='".$param."' ";
					$images = do_shortcode("[av_slideshow {$string}]");
				break;

				case 'list':
					$images = $this->post_images($params['ids']);
				break;

				case 'no':
					$images = false;
					$nogalleryclass = ' no_portfolio_preview_gallery ';
				break;
			}

			$output .= "<div class='ajax_slide ajax_slide_{$id}' data-slide-id='{$id}' >";

				$output .= "<article class='inner_slide $nogalleryclass' ".avia_markup_helper(array('context' => 'entry','echo'=>false, 'id'=>$id, 'custom_markup'=>$this->atts['custom_markup'])).">";

				if(!empty($images))
				{
					$output .= "<div class='av_table_col first portfolio-preview-image'>";
					$output .=		$images;
					$output .= '</div>';
				}

				if( ! empty( $nogalleryclass ) ) 
				{
					$nogalleryclass .= ' first ';
				}
				
				$markup = avia_markup_helper(array('context' => 'entry_title','echo'=>false, 'id'=>$id, 'custom_markup'=>$this->atts['custom_markup']));
				
				$default_heading = 'h2';
				$args = array(
							'heading'		=> $default_heading,
							'extra_class'	=> ''
						);

				$extra_args = array( $this, $entry, __METHOD__ );

				/**
				 * @since 4.5.5
				 * @return array
				 */
				$args = apply_filters( 'avf_customize_heading_settings', $args, __CLASS__, $extra_args );

				$heading = ! empty( $args['heading'] ) ? $args['heading'] : $default_heading;
				$css = ! empty( $args['extra_class'] ) ? $args['extra_class'] : '';
						

				$output .=	"<div class='av_table_col $nogalleryclass portfolio-entry portfolio-preview-content'>";

				$output .=		'<header class="entry-content-header">';
				$output .=			"<{$heading} class='portfolio-preview-title entry-title {$css}' {$markup}><a href='{$link}'>".$entry->post_title."</a></{$heading}>";
				$output .=		'</header>';

				$output .=		"<div class='entry-content-wrapper entry-content' ".avia_markup_helper(array('context' => 'entry_content','echo'=>false, 'id'=>$id, 'custom_markup'=>$this->atts['custom_markup'])).">";
				$output .=			$content;
				$output .=		'</div>';
				$output .=		"<span class='avia-arrow'></span>";
				
				$output .=	'</div>';

                $output .=	'<footer class="entry-footer"></footer>';
				$output .= '</article>';

			$output .= '</div>';

			return "<script type='text/html' id='avia-tmpl-portfolio-preview-{$id}'>\n{$output}\n</script>\n\n";

		}

		protected function post_images($ids)
		{
			if(empty($ids)) return;

			$attachments = get_posts(array(
				'include' => $ids,
				'post_status' => 'inherit',
				'post_type' => 'attachment',
				'post_mime_type' => 'image',
				'order' => 'ASC',
				'orderby' => 'post__in')
				);

			$output = '';

			foreach($attachments as $attachment)
			{
				$img	 = wp_get_attachment_image_src($attachment->ID, 'large');

                $alt = get_post_meta($attachment->ID, '_wp_attachment_image_alt', true);
                $alt = !empty($alt) ? esc_attr($alt) : '';
                $title = trim($attachment->post_title) ? esc_attr($attachment->post_title) : '';
                $description = trim($attachment->post_content) ? esc_attr($attachment->post_content) : '';

				$output .= " <a href='".$img[0]."' class='portolio-preview-list-image' title='".$description."' ><img src='".$img[0]."' title='".$title."' alt='".$alt."' /></a>";
			}

			return $output;
		}




		public function print_preview_templates()
		{
			foreach ($this->entries->posts as $entry)
			{
				echo $this->build_preview_template( $entry );
			}
		}



		//fetch new entries
		public function query_entries( $params = array() )
		{
			
			$query = array();
			if( empty( $params ) ) 
			{
				$params = $this->atts;
			}

			if( ! empty( $params['categories'] ) )
			{
				//get the portfolio categories
				$terms = explode( ',', $params['categories'] );
			}

			$page = get_query_var( 'paged' ) ? get_query_var( 'paged' ) : get_query_var( 'page' );
			if( ! $page || $params['paginate'] == 'no' ) 
			{
				$page = 1;
			}
			
			$date_query = array();
			if( 'date_filter' == $params['date_filter'] )
			{
				$date_query = AviaHelper::add_date_query( $date_query, $params['date_filter_start'], $params['date_filter_end'], $params['date_filter_format'] );
			}

			//if we find categories perform complex query, otherwise simple one
			if( isset( $terms[0] ) && ! empty( $terms[0] ) && ! is_null( $terms[0] ) && $terms[0] != 'null' )
			{
				$query = array(	
								'orderby'		=> $params['query_orderby'],
								'order'			=> $params['query_order'],
								'paged'			=> $page,
								'posts_per_page' => $params['items'],
								'post_type'		=> $params['post_type'],
								'date_query'	=> $date_query,
								'tax_query'		=> array( 	
														array( 	
																'taxonomy' 	=> $params['taxonomy'],
																'field' 	=> 'id',
																'terms' 	=> $terms,
																'operator' 	=> 'IN'
															)
													)
							);
			}
			else
			{
				$query = array(	
								'orderby'		=> $params['query_orderby'],
								'order'			=> $params['query_order'],
								'paged'			=> $page, 
								'posts_per_page' => $params['items'], 
								'post_type'		=> $params['post_type'],
								'date_query'	=> $date_query,
							);
			}

			/**
			 * 
			 * @since < 4.0
			 * @param array $query
			 * @param array $params
			 * @return array
			 */
			$query = apply_filters( 'avia_post_grid_query', $query, $params );

			$this->entries = new WP_Query( $query );

		}


		//function that allows to set the query to an existing post query. usually only needed on pages that already did a query for the entries, like taxonomy archive pages.
		//Shortcode uses the query_entries function above
		public function use_global_query()
		{
			global $wp_query;
			$this->entries = $wp_query;
		}



	}
}


/*
Example: how to order posts randomly on page load. put this into functions.php

add_filter('avia_post_grid_query','avia_order_by_random');
function avia_order_by_random($query)
{
	$query['orderby'] = 'rand';
	return $query;
}
*/
