<?php

class JoyFeaturedContent {
	
	public static $max_posts = 4;
	public static $post_types = array( 'post' );
	public static $tag;
	public static $tag_name = '';
	public static $post_order = '';
	
	public static function setup($settings = array()) {
		if (isset($settings['tag_name'])) {
			self::$tag_name = $settings['tag_name'];
		}
		if (isset($settings['max_posts'])) {
			self::$max_posts = $settings['max_posts'];
		}
		if (isset($settings['post_order'])) {
			self::$post_order = $settings['post_order'];
		}
	}
	
	public static function get_featured_posts() {
		
		
		$post_ids = self::get_featured_post_ids();	
	
		// No need to query if there is are no featured posts.
		if ( empty( $post_ids ) ) {
			return array();
		}
	
		if (self::$post_order == 'custom') {
			$joy_featured_posts = get_posts( array(
					'include'        => $post_ids,
					'posts_per_page' => count( $post_ids ),
					'post_type'      => self::$post_types,
					'orderby' => 'meta_value_num',
					'order' => 'ASC',
					'meta_key' => 'pb_feature_index',
			) );				
		}
		else {
			$joy_featured_posts = get_posts( array(
					'include'        => $post_ids,
					'posts_per_page' => count( $post_ids ),
					'post_type'      => self::$post_types,
			) );
		}
	
		return $joy_featured_posts;
	}
	
	/**
	 * Get featured post IDs
	 *
	 * This function will return the an array containing the post IDs of all
	 * featured posts.
	 *
	 * Sets the "featured_content_ids" transient.
	 *
	 * @return array Array of post IDs.
	 */
	public static function get_featured_post_ids() {
		// Return array of cached results if they exist.
		//$featured_ids = get_transient( 'pb_featured_content_ids' );
		if ( ! empty( $featured_ids ) ) {
			return array_map(
					'absint',
					/**
					 * Filter the list of Featured Posts IDs.
			*
			* @module theme-tools
			*
			* @since 2.7.0
			*
			* @param array $featured_ids Array of post IDs.
			*/
					apply_filters( 'joy_featured_content_post_ids', (array) $featured_ids )
			);
		}
	
		// Return empty array if no tag name is set.
		$term = get_term_by( 'name', self::$tag_name, 'post_tag' );
		if ( ! $term ) {
			$term = get_term_by( 'id', self::$tag_name, 'post_tag' );
		}
		if ( $term ) {
			$tag = $term->term_id;
		} else {
			return apply_filters( 'joy_featured_content_post_ids', array() );
		}
	
		// Back compat for installs that have the quantity option still set.
		$quantity = self::$max_posts;
	
		// Query for featured posts.
		
		if (self::$post_order == 'custom') {
			$featured = get_posts( array(
					'numberposts' => $quantity,
					'post_type'   => self::$post_types,
					'tax_query'   => array(
							array(
									'field'    => 'term_id',
									'taxonomy' => 'post_tag',
									'terms'    => $tag,
							),
					),
					'orderby' => 'meta_value_num',
					'order' => 'ASC',
					'meta_key' => 'pb_feature_index',
			) );	

		}	
		else {	
			$featured = get_posts( array(
					'numberposts' => $quantity,
					'post_type'   => self::$post_types,
					'tax_query'   => array(
							array(
									'field'    => 'term_id',
									'taxonomy' => 'post_tag',
									'terms'    => $tag,
							),
					),
			) );
		}
	
		// Return empty array if no featured content exists.
		if ( ! $featured ) {
			return apply_filters( 'joy_featured_content_post_ids', array() );
		}
	
		// Ensure correct format before save/return.
		$featured_ids = wp_list_pluck( (array) $featured, 'ID' );
		$featured_ids = array_map( 'absint', $featured_ids );
	
		set_transient( 'joy_featured_content_ids', $featured_ids );
	
		return apply_filters( 'joy_featured_content_post_ids', $featured_ids );
	}
	
}