wpproquiz-email-results.php

<?php
/**
 * Modifies WP Pro Quiz so I can get the dang answers in the results.
 *
 * @since   0.1.0
 * @package ME10
 */

// Don't load directly
if ( ! defined( 'ABSPATH' ) ) {
	die;
}

// Only fire on admin AJAX quiz complete
if ( defined( 'DOING_AJAX' ) &&
     DOING_AJAX &&
     isset( $_POST['data'] ) &&
     isset( $_POST['data']['quizId'] ) &&
     isset( $_POST['data']['results'] )
) {
	add_filter( 'init', 'me10_wpproquiz_email_results' );
}

function me10_wpproquiz_email_results() {

	$quiz_ID = $_POST['data']['quizId'];
	$results = $_POST['data']['results'];

	$quizMapper     = new WpProQuiz_Model_QuizMapper();
	$formMapper     = new WpProQuiz_Model_FormMapper();
	$questionMapper = new WpProQuiz_Model_QuestionMapper();

	$quiz = $quizMapper->fetch( $quiz_ID );

	if ( $quiz === null || $quiz->getId() <= 0 ) {
		return json_encode( array() );
	}

	$forms = $formMapper->fetch( $quiz->getId() );

	$forms_map = array();
	foreach ( $forms as $form ) {
		$forms_map[ $form->getFieldname() ] = $form->getFormId();
	}

	// Get form fields
	$instructor_email = $_POST['data']['forms'][ $forms_map['Instructor Email'] ];
	$student_email_s  = $_POST['data']['forms'][ $forms_map['Your Email'] ];
	$student_name     = $_POST['data']['forms'][ $forms_map['Your Name'] ];

	if ( ! $instructor_email || ! $student_name ) {
		return;
	}

	$to      = "$instructor_email,$student_email_s";
	$subject = 'Quiz Completed';

	ob_start(); ?>
	<h1>Quiz "<?php echo $quiz->getName(); ?>" has been completed by <?php echo esc_attr( $student_name ); ?></h1>

	<h2><strong>Score: </strong> <?php echo $results['comp']['correctQuestions']; ?> out
		of <?php echo count( $results ) - 1; ?></h2>

	<h3>Answers:</h3>

	<?php foreach ( $results as $result_ID => $result ) :

		if ( $result_ID == 'comp' ) {
			continue;
		}

		$question    = $questionMapper->fetch( $result_ID );
		$answer_data = $question->getAnswerData();
		$answered    = $answer_data[ array_search( '1', $result['data'] ) ];
		$correct     = false;

		foreach ( $answer_data as $answer ) {
			if ( $answer->isCorrect() ) {
				$correct = $answer;
				break;
			}
		}

		$was_correct = $answered->getAnswer() === $correct->getAnswer();
		?>
		<table
			style="padding: 0.5em; border: 1px solid #aaa; background: <?php echo $was_correct ? '#BEFFC2' : '#EEC0AF'; ?>; text-align: left;margin-bottom: 1em; width: 100%; max-width: 600px;">
			<tbody>
			<tr valign="top">
				<th scope="row" style="white-space: nowrap;">Question:</th>
				<td><?php echo $question->getQuestion(); ?></td>
			</tr>
			<tr valign="top">
				<th scope="row" style="white-space: nowrap;">Correct Answer:</th>
				<td><?php echo $correct->getAnswer(); ?></td>
			</tr>
			<tr valign="top">
				<th scope="row" style="white-space: nowrap;">Student Answered:</th>
				<td><?php echo $answered->getAnswer(); ?></td>
			</tr>
				<tr valign="top">
					<th scope="row" style="white-space: nowrap;"><?php echo $was_correct ? 'Correct' : 'Incorrect'; ?>:</th>
					<td><?php echo $question->getCorrectMsg(); ?></td>
				</tr>
			</tbody>
		</table>
	<?php endforeach; ?>
	<?php $message = ob_get_clean();

	add_filter( 'wp_mail_from', 'me10_email_from', 1000 );
	add_filter( 'wp_mail_from_name', 'me10_email_from_name', 1000 );
	add_filter( 'wp_mail_content_type', 'me10_html_email', 1000 );
	wp_mail( $to, $subject, $message );
	remove_filter( 'wp_mail_from', 'me10_html_email', 1000 );
	remove_filter( 'wp_mail_from_name', 'me10_html_email', 1000 );
	remove_filter( 'wp_mail_content_type', 'me10_html_email', 1000 );
}

function me10_html_email() {
	return 'text/html';
}

function me10_email_from() {
	return '[email protected]';
}

function me10_email_from_name() {
	return 'Media Ethics';
}