gocodebox/lifterlms

<?php
/**
 * Course Completions analytics widget
 *
 * @package LifterLMS/Admin/Reporting/Widgets/Classes
 *
 * @since 3.5.0
 * @version 3.5.3
 */

defined( 'ABSPATH' ) || exit;

/**
 * Course Completions analytics widget class
 *
 * @since 3.5.0
 * @version 3.5.3
 */
class LLMS_Analytics_Coursecompletions_Widget extends LLMS_Analytics_Widget {

    public $charts = true;

    protected function get_chart_data() {
        return array(
            'type'   => 'count', // Type of field.
            'header' => array(
                'id'    => 'coursecompletions',
                'label' => __( '# of Courses Completed', 'lifterlms' ),
                'type'  => 'number',
            ),
        );
    }

    public function set_query() {

        global $wpdb;

        $dates = $this->get_posted_dates();

        $student_ids = '';
        $students    = $this->get_posted_students();
        if ( $students ) {
            $student_ids .= 'AND user_id IN ( ' . implode( ', ', $students ) . ' )';
        }

        $lesson_ids = '';
        $products   = $this->get_posted_posts();

        if ( $products ) {
            $lesson_ids .= 'AND post_id IN ( ' . implode( ', ', $products ) . ' )';
        }

        $this->query_function = 'get_results';
        $this->output_type    = OBJECT;

        $this->query = "SELECT updated_date AS date
                        FROM {$wpdb->prefix}lifterlms_user_postmeta AS upm
                        JOIN {$wpdb->posts} AS p ON p.ID = upm.post_id
                        WHERE
                                upm.meta_key = '_is_complete'
                            AND p.post_type = 'course'
                            AND upm.meta_value = 'yes'
                            AND upm.updated_date BETWEEN CAST( %s AS DATETIME ) AND CAST( %s AS  DATETIME )
                            {$student_ids}
                            {$lesson_ids}
                        ;";

        $this->query_vars = array(
            $this->format_date( $dates['start'], 'start' ),
            $this->format_date( $dates['end'], 'end' ),
        );

    }

    protected function format_response() {

        if ( ! $this->is_error() ) {

            return count( $this->get_results() );

        }

    }

}