LearnDash Category Progress shortcode

functions.php

add_shortcode( 'learndash_category_progress', 'learndash_category_progress', 10, 3 );
function learndash_category_progress( $atts = array(), $content = '', $shortcode_slug = 'learndash_category_progress' ) {
	global $learndash_shortcode_used;
	$learndash_shortcode_used = true;

	$atts = shortcode_atts(
		array(
			'course_category_id' => 0,
			'user_id'            => 0,
			'array'              => false,
		),
		$atts
	);

	if ( empty( $atts['user_id'] ) ) {
		if ( is_user_logged_in() ) {
			$atts['user_id'] = get_current_user_id();
		}
	}

	if ( empty( $atts['course_category_id'] ) ) {
		return '';
	}

	// Get all courses in the specified category.
	$courses = get_posts( array(
		'post_type'   => 'sfwd-courses',
		'numberposts' => -1,
		'tax_query'   => array(
			array(
				'taxonomy' => 'ld_course_category',
				'field'    => 'term_id',
				'terms'    => $atts['course_category_id'],
			),
		),
	) );

	if ( empty( $courses ) ) {
		return '';
	}

	$total_completed = 0;
	$total_steps = 0;

	foreach ( $courses as $course ) {
		$course_progress = learndash_user_get_course_progress( $atts['user_id'], $course->ID );

		if ( isset( $course_progress['completed'] ) ) {
			$total_completed += absint( $course_progress['completed'] );
		}

		if ( isset( $course_progress['total'] ) ) {
			$total_steps += absint( $course_progress['total'] );
		}
	}

	$percentage = 0;

	if ( $total_steps > 0 ) {
		$percentage = intval( $total_completed * 100 / $total_steps );
		$percentage = ( $percentage > 100 ) ? 100 : $percentage;
	}

	$message = sprintf( esc_html_x( '%1$d out of %2$d steps completed', 'placeholders: completed steps, total steps', 'learndash' ), $total_completed, $total_steps );

	if ( $atts['array'] ) {
		return array(
			'percentage' => $percentage,
			'completed'  => $total_completed,
			'total'      => $total_steps,
		);
	}

	ob_start();
	?>
	<div class="learndash-wrapper learndash-widget">
		<div class="ld-progress ld-progress-inline">
			<div class="ld-progress-heading">
				<div class="ld-progress-stats">
					<div class="ld-progress-percentage ld-secondary-color">
						<?php
						echo sprintf(
							esc_html_x( '%s%% Complete', 'placeholder: Progress percentage', 'learndash' ),
							esc_html( $percentage )
						);
						?>
					</div>
					<div class="ld-progress-steps">
						<?php
						echo sprintf(
							esc_html_x( '%1$d/%2$d Steps', 'placeholders: completed steps, total steps', 'learndash' ),
							esc_html( $total_completed ),
							esc_html( $total_steps )
						);
						?>
					</div>
				</div> <!--/.ld-progress-stats-->
			</div>

			<div class="ld-progress-bar">
				<div class="ld-progress-bar-percentage ld-secondary-background" style="<?php echo esc_attr( 'width:' . $percentage . '%' ); ?>"></div>
			</div>
		</div> <!--/.ld-progress-->
	</div>
	<?php
	return ob_get_clean();
}

This shortcode shows a single progress bar for ALL courses in a specific Course Category.
Example usage:
[learndash_category_progress course_category_id="123" user_id="456"]