Custom archive virtual page for CoursePress

cp-custom-archive-list.php

<?php
/*
Plugin Name: Custom archive virtual page for CoursePress
Plugin URI: https://premium.wpmudev.org/
Description: Requires CoursePress 2.0 Pro
Author: Panos Lyrakis @ WPMUDEV
Author URI: https://premium.wpmudev.org/
License: GPLv2 or later
*/
if( ! class_exists( 'WPMUDEV_CP_Custom_Archive' ) ){

	class WPMUDEV_CP_Custom_Archive{

		private static $_instance = null;

		public static function get_instance() {

			if ( is_null( self::$_instance ) ) {
				self::$_instance = new WPMUDEV_CP_Custom_Archive();
			}
			return self::$_instance;

		}

		private function __construct(){

			add_action( 'coursepress_template_course_archive', array( $this, 'coursepress_template_course_archive' ), 10, 2 );

			add_shortcode( 'custom_course_list_box', array( $this, 'course_list_box' ) );
			add_shortcode( 'custom_course_thumbnail', array( $this, 'custom_course_thumbnail' ) );
			add_shortcode( 'custom_course_media', array( $this, 'custom_course_media' ) );
			
		}

		public function coursepress_template_course_archive( $template, $atts ){

			

			if( $template == '[course_list_box]' ){
				$template = '[custom_course_list_box]';
			}

			return $template;

		}


		public static function course_list_box( $a ) {

			$a = shortcode_atts( array(
				'course_id' => CoursePress_Helper_Utility::the_course( true ),
				'clickable' => false,
				'clickable_label' => __( 'Course Details', 'cp' ),
				'override_button_text' => '',
				'override_button_link' => '',
				'button_label' => __( 'Details', 'cp' ),
				'echo' => false,
				'show_withdraw_link' => false,
			), $a, 'course_list_box' );

			$course_id = (int) $a['course_id'];
			$clickable_label = sanitize_text_field( $a['clickable_label'] );
			$echo = cp_is_true( $a['echo'] );
			$clickable = cp_is_true( $a['clickable'] );
			$url = CoursePress_Data_Course::get_course_url( $course_id );

			$course_image = CoursePress_Data_Course::get_setting( $course_id, 'listing_image' );
			$has_thumbnail = ! empty( $course_image );

			$clickable_link = $clickable ? 'data-link="' . esc_url( $url ) . '"' : '';
			$clickable_class = $clickable ? 'clickable' : '';
			$clickable_text = $clickable ? '<div class="clickable-label">' . $clickable_label . '</div>' : '';
			$button_label = $a['button_label'];
			$button_link = $url;
			$withdraw_from_course = '';

			if ( ! empty( $a['override_button_link'] ) ) {
				$button_link = $a['override_button_link'];
			}

			$button_text = sprintf( '<a href="%s" rel="bookmark" class="button apply-button apply-button-details">%s</a>', esc_url( $button_link ), $button_label );
			$instructor_link = $clickable ? 'no' : 'yes';
			$thumbnail_class = $has_thumbnail ? 'has-thumbnail' : '';

			$completed = false;
			$student_progress = false;
			if ( is_user_logged_in() ) {
				$student_progress = CoursePress_Data_Student::get_completion_data( get_current_user_id(), $course_id );
				$completed = isset( $student_progress['completion']['completed'] ) && ! empty( $student_progress['completion']['completed'] );
				/**
				 * Withdraw from course
				 */
				$show_withdraw_link = cp_is_true( $a['show_withdraw_link'] );
				if ( $show_withdraw_link && ! $completed ) {
					$withdraw_link = add_query_arg(
						array(
							'_wpnonce' => wp_create_nonce( 'coursepress_student_withdraw' ),
							'course_id' => $course_id,
							'student_id' => get_current_user_id(),
						)
					);
					$withdraw_from_course = sprintf( '<a href="%s" class="cp-withdraw-student">%s</a>', esc_url( $withdraw_link ), __( 'Withdraw', 'cp' ) );
				}
			}
			$completion_class = CoursePress_Data_Course::course_class( $course_id );
			$completion_class = implode( ' ', $completion_class );

			// Add filter to post classes

			// Override button
			if ( ! empty( $a['override_button_text'] ) && ! empty( $a['override_button_link'] ) ) {
				$button_text = '<button class="coursepress-course-link" data-link="' . esc_url( $a['override_button_link'] ) . '">' . esc_attr( $a['override_button_text'] ) . '</button>';
			}

			/**
			 * schema.org
			 */
			$schema = apply_filters( 'coursepress_schema', '', 'itemscope' );
			$course_title = do_shortcode( sprintf( '[course_title course_id="%s"]', $course_id ) );
			$course_title = sprintf( '<a href="%s" rel="bookmark">%s</a>', esc_url( $url ), $course_title );

			$content = '<div class="course course_list_box_item course_' . $course_id . ' ' . $clickable_class . ' ' . $completion_class . ' ' . $thumbnail_class . '" ' . $clickable_link . ' ' . $schema .'>
				
				<div class="course-information">

					' . $course_title . '

					[custom_course_thumbnail course_id="' . $course_id . '"]

					[course_summary course_id="' . $course_id . '"]
					[course_instructors style="list-flat" link="' . $instructor_link . '" course_id="' . $course_id . '"]
					<div class="course-meta-information">
						[course_start label="" course_id="' . $course_id . '"]
						[course_language label="" course_id="' . $course_id . '"]
						[course_cost label="" course_id="' . $course_id . '"]
	                    [course_categories course_id="' . $course_id . '"]
	'.$withdraw_from_course.'
					</div>' .
						$button_text . $clickable_text . '
				</div>
			</div>
			';


			if ( $echo ) {
				echo $content;
			}

			return $content;
		}

		public static function custom_course_thumbnail( $atts ) {
			extract( shortcode_atts( array(
				'course_id' => CoursePress_Helper_Utility::the_course( true ),
				'wrapper' => 'figure',
				'class' => '',
			), $atts, 'course_thumbnail' ) );

			$course_id = (int) $course_id;
			if ( empty( $course_id ) ) { return ''; }

			$wrapper = sanitize_html_class( $wrapper );
			$class = sanitize_html_class( $class );

			return do_shortcode( '[custom_course_media course_id="' . $course_id . '" wrapper="' . $wrapper . '" class="' . $class . '" type="thumbnail"]' );
		}

		
		public static function custom_course_media( $atts ) {
			extract( shortcode_atts( array(
				'course_id' => CoursePress_Helper_Utility::the_course( true ),
				'class' => '',
				'height' => CoursePress_Core::get_setting( 'course/image_height' ),
				'list_page' => 'no',
				'priority' => '', // Gives priority to video (or image).
				'type' => '', // Default, video, image.
				'width' => CoursePress_Core::get_setting( 'course/image_width' ),
				'wrapper' => '',
			), $atts, 'course_media' ) );

			$course_id = (int) $course_id;
			if ( empty( $course_id ) ) { return ''; }

			$type = sanitize_text_field( $type );
			$priority = sanitize_text_field( $priority );
			$list_page = cp_is_true( sanitize_html_class( $list_page ) );
			$class = sanitize_html_class( $class );
			$wrapper = sanitize_html_class( $wrapper );
			$height = sanitize_text_field( $height );
			$width = sanitize_text_field( $width );

			// We'll use pixel if none is set
			if ( ! empty( $width ) && (int) $width == $width ) {
				$width .= 'px';
			}
			if ( ! empty( $height ) && (int) $height == $height ) {
				$height .= 'px';
			}

			if ( ! $list_page ) {
				$type = empty( $type ) ? CoursePress_Core::get_setting( 'course/details_media_type', 'default' ) : $type;
				$priority = empty( $priority ) ? CoursePress_Core::get_setting( 'course/details_media_priority', 'video' ) : $priority;
			} else {
				$type = empty( $type ) ? CoursePress_Core::get_setting( 'course/listing_media_type', 'default' ) : $type;
				$priority = empty( $priority ) ? CoursePress_Core::get_setting( 'course/listing_media_priority', 'image' ) : $priority;
			}

			$priority = 'default' != $type ? false : $priority;

			// Saves some overhead by not loading the post again if we don't need to.
			$class = sanitize_html_class( $class );

			$course_video = CoursePress_Data_Course::get_setting( $course_id, 'featured_video' );
			$course_image = CoursePress_Data_Course::get_setting( $course_id, 'listing_image' );

			$content = '';

			if ( 'thumbnail' == $type ) {
				$type = 'image';
				$priority = 'image';
			}

			// If no wrapper and we're specifying a width and height, we need one, so will use div.
			if ( empty( $wrapper ) && ( ! empty( $width ) || ! empty( $height ) ) ) {
				$wrapper = 'div';
			}

			$wrapper_style = '';
			$wrapper_style .= ! empty( $width ) ? 'width:' . $width . ';' : '';
			$wrapper_style .= ! empty( $width ) ? 'height:' . $height . ';' : '';

			if ( is_singular( 'course' ) ) {
				$wrapper_style = '';
			}

			if ( ( ( 'default' == $type && 'video' == $priority ) || 'video' == $type || ( 'default' == $type && 'image' == $priority && empty( $course_image ) ) ) && ! empty( $course_video ) ) {

				$content = '<div class="video_player course-featured-media course-featured-media-' . $course_id . ' ' . $class . '">';

				$content .= ! empty( $wrapper ) ? '<' . $wrapper . ' style="' . $wrapper_style . '">' : '';

				$video_extension = pathinfo( $course_video, PATHINFO_EXTENSION );

				if ( ! empty( $video_extension ) ) {
					$attr = array(
						'src' => $course_video,
					);
					$content .= wp_video_shortcode( $attr );
				} else {
					$embed_args = array();

					// Add YouTube filter.
					if ( preg_match( '/youtube.com|youtu.be/', $course_video ) ) {
						add_filter( 'oembed_result', array(
							'CoursePress_Helper_Utility',
							'remove_related_videos',
						), 10, 3 );
					}

					$content .= wp_oembed_get( $course_video, $embed_args );
				}

				$content .= ! empty( $wrapper ) ? '</' . $wrapper . '>' : '';
				$content .= '</div>';
			}

			if ( ( ( 'default' == $type && 'image' == $priority ) || 'image' == $type || ( 'default' == $type && 'video' == $priority && empty( $course_video ) ) ) && ! empty( $course_image ) ) {

				$content .= '<div class="course-thumbnail course-featured-media course-featured-media-' . $course_id . ' ' . $class . '">';
				//$content .= ! empty( $wrapper ) ? '<' . $wrapper . ' style="' . $wrapper_style . '">' : '';


				$attachment_id = $this->_get_image_id_by_url( $course_image );

				$src = wp_get_attachment_image_src( $attachment_id, 'full' );
				$srcset = wp_get_attachment_image_srcset( $attachment_id, 'full' );
				$sizes = wp_get_attachment_image_sizes( $attachment_id, 'full' );
				$alt = get_post_meta( $attachment_id, '_wp_attachment_image_alt', true);

				ob_start();
				?>
			  	<img src="<?php echo esc_attr( $src );?>"
			  		srcset="<?php echo esc_attr( $srcset ); ?>"
					sizes="<?php echo esc_attr( $sizes );?>"
					alt="<?php echo esc_attr( $alt );?>" />

				<?php
				$content .= ob_get_clean();

				//$content .= ! empty( $wrapper ) ? '</' . $wrapper . '>' : '';
				$content .= '</div>';
			}

			return $content;
		}


		private function _get_attachment_by_url( $image_url ) {
			global $wpdb;
			$attachment = $wpdb->get_row($wpdb->prepare("SELECT * FROM $wpdb->posts WHERE guid='%s';", $image_url )); 
		        return $attachment; 
		}

		private function _get_image_id_by_url( $image_url ) {
			global $wpdb;
			$attachment = $wpdb->get_col($wpdb->prepare("SELECT ID FROM $wpdb->posts WHERE guid='%s';", $image_url )); 
		        return $attachment[0]; 
		}

			


	}

	add_action( 'plugins_loaded', function(){

        $GLOBALS['WPMUDEV_CP_Custom_Archive'] = WPMUDEV_CP_Custom_Archive::get_instance();

    }, 10 );

}