SIS Courses.php

<?php
/**
 * Template Name: SIS Courses
 *
 * @link https://developer.wordpress.org/themes/basics/template-hierarchy/
 *
 * @package KSAS_Academic_Department
 */

get_header(); ?>

<?php get_template_part( 'template-parts/featured-image' ); ?>

<?php

	// Load Zebra Curl.
	require get_template_directory() . '/library/Zebra_cURL.php';

	// Set query string variables.
	$theme_option       = flagship_sub_get_global_options();
	$department_unclean = $theme_option['flagship_sub_isis_name'];
	$department         = str_replace( ' ', '%20', $department_unclean );
	$department         = str_replace( '&', '%26', $department );
	$spring             = 'spring%202021';
	$open               = 'open';
	$approval           = 'approval%20required';
	$closed             = 'closed';
	$waitlist           = 'waitlist%20only';
	$reserved_open      = 'reserved%20open';
	$key                = 'Qrf9MQse2cdpgaYdPF23dkMaqrVKE5dP';

	// Create first Zebra Curl class.
	$course_curl = new Zebra_cURL();
	$course_curl->option(
		array(
			CURLOPT_TIMEOUT        => 60,
			CURLOPT_CONNECTTIMEOUT => 60,
		)
	);

	$course_curl->cache( get_template_directory() . '/sis-cache/', 2592000 );

	// Create API Url calls.
	$courses_spring_url  = 'https://sis.jhu.edu/api/classes?key=' . $key . '&School=Krieger%20School%20of%20Arts%20and%20Sciences&Term=' . $spring . '&Department=AS%20' . $department . '&status=' . $open . '&status=' . $approval . '&status=' . $waitlist . '&status=' . $reserved_open;

	$course_data = array();
	$output = '';

	// get the first set of data.
	$course_curl->get( $courses_spring_url, function( $result ) use ( &$course_data ) {

		$key = 'DZkN4QOJGaDKVg6Du1911u45d4TJNp6I';

		if ( ( ! is_array( $result ) && ! is_object( $result ) ) || ( is_array( $result ) || count( (array) $result ) == 0 ) || ( json_last_error() != JSON_ERROR_NONE ) ) {
			// log the error or warning here ...
			// $input  = $result->body;
			// $output = print_r($result, true);

			// Only for PHP >= 5.3.0!
			// json_last_error();
			// json_last_error_msg();
			return -1;
		}

		$result->body = json_decode( html_entity_decode( $result->body ) );

		foreach ( $result->body as $course ) {

			$section = $course->{'SectionName'};
			$level   = $course->{'Level'};
			$parent  = 'Undergraduate';

			if ( strpos( $level, $parent ) !== false || ( $level === '' ) !== false ) {
				$number        = $course->{'OfferingName'};
				$clean_number  = preg_replace( '/[^A-Za-z0-9\-]/', '', $number );
				$dirty_term    = $course->{'Term_IDR'};
				$clean_term    = str_replace( ' ', '%20', $dirty_term );
				$details_url   = 'https://sis.jhu.edu/api/classes/' . $clean_number . $section . '/' . $clean_term . '?key=' . $key;

				// add to array
				$course_data[] = $details_url;
			}
		}

	});

	// Now that we have the first set of data.
	$course_curl->get( $course_data, function( $result ) use (&$output) {

		$result->body = json_decode( html_entity_decode( $result->body ) );

		$title               = $result->body[0]->{'Title'};
		$term                = $result->body[0]->{'Term_IDR'};
		$clean_term          = str_replace( ' ', '-', $term );
		$meetings            = $result->body[0]->{'Meetings'};
		$status              = $result->body[0]->{'Status'};
		$seatsavailable      = $result->body[0]->{'SeatsAvailable'};
		$course_number       = $result->body[0]->{'OfferingName'};
		$clean_course_number = preg_replace( '/[^A-Za-z0-9\-]/', '', $course_number );
		$credits             = $result->body[0]->{'Credits'};
		$section_number      = $result->body[0]->{'SectionName'};
		$instructor          = $result->body[0]->{'InstructorsFullName'};
		$course_level        = $result->body[0]->{'Level'};
		$description         = $result->body[0]->{'SectionDetails'}[0]->{'Description'};
		$room                = $result->body[0]->{'SectionDetails'}[0]->{'Meetings'}[0]->{'Building'};
		$roomnumber          = $result->body[0]->{'SectionDetails'}[0]->{'Meetings'}[0]->{'Room'};
		$postag              = ' ';
		$sectiondetails      = $result->body[0]->{'SectionDetails'}[0];
		$tags                = [];

		if ( isset( $sectiondetails->{'PosTags'} ) ) {
			if ( ! empty( $sectiondetails->{'PosTags'} ) ) {
					$postag = $sectiondetails->{'PosTags'};
				foreach ( $postag as $tag ) {
					$tags[] = $tag->{'Tag'};
				}
			}
		}

		$print_tags = empty( $tags ) ? 'n/a' : implode( ', ', $tags );

		$output .= '<tr><td>' . $course_number . '&nbsp;(' . $section_number . ')</td><td>' . $title . '</td><td class="show-for-medium">' . $meetings . '</td><td class="show-for-medium">' . $instructor . '</td><td class="show-for-medium">' . $room . '&nbsp;' . $roomnumber . '</td><td class="show-for-large">' . implode( ', ', $tags ) . '</td>';

		$output .= '<td><button class="button course-details" data-open="course-' . $clean_course_number . $section_number . $clean_term . '">More Info<span class="show-for-sr">-' . $title . '-' . $section_number . '</span></button></td></tr>';

		$output .= '<div class="reveal course-description" id="course-' . $clean_course_number . $section_number . $clean_term . '" aria-labelledby="' . $clean_term . $course_number . '-' . $section_number . '" data-reveal><h1 id="' . $clean_term . $course_number . '-' . $section_number . '">' . $title . '<br><small>' . $course_number . '&nbsp;(' . $section_number . ')</small></h1><p>' . $description . '<ul><li><strong>Credits:</strong> ' . $credits . '</li><li><strong>Level:</strong> ' . $course_level . ' </li><li><strong>Days/Times:</strong> ' . $meetings . ' </li><li><strong>Instructor:</strong> ' . $instructor . ' </li><li><strong>Room:</strong> ' . $room . '&nbsp;' . $roomnumber . '  </li><li><strong>Status:</strong> ' . $status . '</li><li><strong>Seats Available:</strong> ' . $seatsavailable . '</li><li><strong>PosTag(s):</strong> ' . $print_tags . '</li></ul></p><button class="close-button" data-close aria-label="Close reveal" type="button"><span aria-hidden="true">&times;</span></button></div>';

	});

?>

<div class="main-container" id="page">
	<div class="main-grid">
			<main class="main-content">
				<?php
				while ( have_posts() ) :
					the_post();
					?>
						<?php get_template_part( 'template-parts/content', 'page' ); ?>
				<?php endwhile; ?>
				<ul class="tabs" data-tabs id="courses-tabs">
					<li class="tabs-title is-active"><a href="#Spring">Spring 2021</a></li>
				</ul>
				<div class="tabs-content course-listings" data-tabs-content="courses-tabs">
					<div class="tabs-panel is-active" id="Spring">
						<p class="show-for-sr" id="tblDescSpring">Column one has the course number and section. Other columns show the course title, days offered, instructor's name, room number, if the course is cross-referenced with another program, and a option to view additional course information in a pop-up window.</p>
						<table aria-describedby="tblDescSpring" class="course-table">
							<thead>
								<tr>
									<th>Course # (Section)</th>
									<th>Title</th>
									<th class="show-for-medium">Day/Times</th>
									<th class="show-for-medium">Instructor</th>
									<th class="show-for-medium">Room</th>
									<th class="show-for-large">PosTag(s)</th>
									<th>Info</th>
								</tr>
							</thead>
							<tbody>
								<?php echo $output; ?>
							</tbody>
						</table>
					</div>
				</div>
			</main>
		<?php get_sidebar(); ?>
	</div>
</div>

<?php
get_footer();