<?php

global $post, $wpdb;
$limit_tab  = $instance['tabs-options']['limit_tab'] ? $instance['tabs-options']['limit_tab'] : 4;
$cat_id_tab = $instance['tabs-options']['cat_id_tab'] ? $instance['tabs-options']['cat_id_tab'] : array();
$limit           = $instance['limit'];
$featured        = !empty( $instance['featured'] ) ? true : false ;
$sort = $instance['order'];

if ( !empty( $cat_id_tab ) ) {
	foreach ( $cat_id_tab as $value ) {
		$array[$value] = 1;
		$html[$value]  = '';

		$condition[$value]              = array(
			'post_type'           => 'lp_course',
			'posts_per_page'      => $limit_tab,
			'ignore_sticky_posts' => true,
		);
		$condition[$value]['tax_query'] = array(
			array(
				'taxonomy' => 'course_category',
				'field'    => 'term_id',
				'terms'    => $value
			),
		);

		if( $featured ) {
			$condition[$value]['meta_query'] = array(
				array(
					'key' => '_lp_featured',
					'value' =>  'yes',
				)
			);
		}

		if ( $sort == 'popular' ) {
			
			$query = $wpdb->prepare( "
	  SELECT ID, a+IF(b IS NULL, 0, b) AS students FROM(
		SELECT p.ID as ID, IF(pm.meta_value, pm.meta_value, 0) as a, (
	SELECT COUNT(*)
  FROM (SELECT COUNT(item_id), item_id, user_id FROM {$wpdb->prefix}learnpress_user_items GROUP BY item_id, user_id) AS Y
  GROUP BY item_id
  HAVING item_id = p.ID
) AS b
FROM {$wpdb->posts} p
LEFT JOIN {$wpdb->postmeta} AS pm ON p.ID = pm.post_id  AND pm.meta_key = %s
WHERE p.post_type = %s AND p.post_status = %s
GROUP BY ID
) AS Z
ORDER BY students DESC
 ", '_lp_students', 'lp_course', 'publish' );

			$post_in = $wpdb->get_col( $query );

			$condition[$value]['post__in'] = $post_in;
			$condition[$value]['orderby']  = 'post__in';
		}

		$the_query[$value] = new WP_Query( $condition[$value] );

		if ( $the_query[$value]->have_posts() ) :
			?>
			<?php
			ob_start();
			while ( $the_query[$value]->have_posts() ) : $the_query[$value]->the_post(); ?>
				<?php _learn_press_count_users_enrolled_courses( array( $post->ID ) ); ?>
				<div class="course-item lpr_course <?php echo 'course-grid-' . $limit_tab; ?>">
					<?php
					echo '<div class="course-thumbnail">';
					echo '<a href="' . esc_url( get_the_permalink() ) . '" >';
					echo thim_get_feature_image( get_post_thumbnail_id( $post->ID ), 'full', apply_filters( 'thim_course_thumbnail_width', 450 ), apply_filters( 'thim_course_thumbnail_height', 450 ), get_the_title() );
					echo '</a>';
					thim_course_wishlist_button( $post->ID );
					echo '<a class="course-readmore" href="' . esc_url( get_the_permalink() ) . '">' . esc_html__( 'Read More', 'eduma' ) . '</a>';
					echo '</div>';
					?>
					<div class="thim-course-content">
						<?php
						learn_press_course_instructor();
						?>
						<h2 class="course-title">
							<a href="<?php echo esc_url( get_the_permalink() ); ?>"> <?php echo get_the_title(); ?></a>
						</h2>

						<div class="course-meta">
							<?php learn_press_course_students(); ?>
							<?php thim_course_ratings_count(); ?>
							<?php learn_press_courses_loop_item_price(); ?>
						</div>
					</div>
				</div>
				<?php
			endwhile;
			$html[$value] .= ob_get_contents();
			ob_end_clean();
			?>

			<?php
		endif;
		wp_reset_postdata();
	}
} else {
	return;
}

if ( $instance['title'] ) {
	echo ent2ncr( $args['before_title'] . $instance['title'] . $args['after_title'] );
}

$list_tab = $content_tab = '';
if ( !empty( $cat_id_tab ) ) {
	foreach ( $cat_id_tab as $k => $tab ) {
		$term = get_term_by( 'id', $tab, 'course_category' );
		if ( $k == 0 ) {
			$list_tab .= '<li class="active"><a href="#tab-course-' . $tab . '" data-toggle="tab">' . $term->name . '</a></li>';
			$content_tab .= '<div role="tabpanel" class="tab-pane fade in active" id="tab-course-' . $tab . '">';
			$content_tab .= $html[$tab];
			$content_tab .= '</div>';
		} else {
			$list_tab .= '<li><a href="#tab-course-' . $tab . '" data-toggle="tab">' . $term->name . '</a></li>';
			$content_tab .= '<div role="tabpanel" class="tab-pane fade" id="tab-course-' . $tab . '">';
			$content_tab .= $html[$tab];
			$content_tab .= '</div>';
		}
	}
}

?>
<div class="thim-category-tabs thim-course-grid">
	<ul class="nav nav-tabs">
		<?php echo ent2ncr( $list_tab ); ?>
	</ul>
	<div class="tab-content thim-list-event">
		<?php echo ent2ncr( $content_tab ); ?>
	</div>
</div>

