<?php

if ( ! function_exists('libero_mikado_get_related_post_type')) {
    /**
     * Function for returning latest posts types
     *
     * @param $post_id
     * @param array $options
     * @return WP_Query
     */
    function libero_mikado_get_related_post_type($post_id, $options = array()) {

        $post_type = get_post_type($post_id);

        //Get tags
        $tags = ($post_type == 'portfolio-item') ? wp_get_object_terms($post_id, 'portfolio-tag') : get_the_tags($post_id);
        //Get categories
        $categories = ($post_type == 'portfolio-item') ? wp_get_object_terms($post_id, 'portfolio-category') : get_the_category($post_id);

        $tag_ids = array();
        if ($tags) {
            foreach ($tags as $tag) {
                $tag_ids[] = $tag->term_id;
            }
        }

        $category_ids = array();
        if ($categories) {
            foreach ($categories as $category) {
                $category_ids[] = $category->term_id;
            }
        }

        $hasRelatedByTag = false;
        $hasRelatedByCategory = false;

        if ($tag_ids) {

            if ($post_type == 'portfolio-item') {
                $related_by_tag = libero_mikado_get_related_custom_post_type_by_param($post_id, $tag_ids, 'portfolio-tag', $options); //For Custom Posts
            } else {
                $related_by_tag = libero_mikado_get_related_posts($post_id, $tag_ids, 'tag', $options);
            }

            if (!empty($related_by_tag->posts)) {
                $hasRelatedByTag = true;
                return $related_by_tag;
            }

            $hasRelatedByTag = false;
        }

        if ($categories && !$hasRelatedByTag) {

            if ($post_type == 'portfolio-item') {
                $related_by_category = libero_mikado_get_related_custom_post_type_by_param($post_id, $category_ids, 'portfolio-category', $options);
            } else {
                $related_by_category = libero_mikado_get_related_posts($post_id, $category_ids, 'category', $options);
            }

            if (!empty($related_by_category->posts)) {
                $hasRelatedByCategory = true;
                return $related_by_category;
            }

            $hasRelatedByCategory = false;
        }
    }
}

if ( ! function_exists('libero_mikado_get_related_posts') ) {
    /**
     * Function for related posts
     *
     * @param $post_id - Post ID
     * @param $term_ids - Category or Tag IDs
     * @param $slug - term slug for WP_Query
     * @param array $options
     * @return WP_Query
     */
    function libero_mikado_get_related_posts($post_id, $term_ids, $slug, $options = array()) {

        //Query options
        $posts_per_page = -1;

        //Override query options
        extract($options);

        $args = array(
            'post__not_in'   => array($post_id),
            $slug . '__in'   => $term_ids,
            'order'          => 'DESC',
            'orderby'        => 'date',
            'posts_per_page' => $posts_per_page
        );

        $related_posts = new WP_Query($args);
        wp_reset_postdata();

        return $related_posts;
    }
}

if ( ! function_exists('libero_mikado_get_related_custom_post_type_by_param') ) {
    /**
     * @param $post_id - Post ID
     * @param $term_ids - Category or Tag IDs
     * @param $taxonomy
     * @param array $options
     * @return WP_Query
     */
    function libero_mikado_get_related_custom_post_type_by_param($post_id, $term_ids, $taxonomy, $options = array()) {

        //Query options
        $posts_per_page = -1;

        //Override query options
        extract($options);

        $args = array(
            'post__not_in'  => array($post_id),
            'order'         => 'DESC',
            'orderby'       => 'date',
            'posts_per_page'=> $posts_per_page,
            'tax_query'     => array(
                array(
                    'taxonomy'  => $taxonomy,
                    'field'     => 'term_id',
                    'terms'     => $term_ids,
                ),
            )
        );

        $related_by_taxonomy = new WP_Query($args);

        return $related_by_taxonomy;
    }
}