<?php
$patterns = [
    "name" => "/^[a-z ,.'-]+$/i",
    "email" => "/^[\w&]([\w\-\.'&]*)@([\w\-\.]*)(\.[a-z]{2,6}(\.[a-z]{2}){0,2})$/i",
    "subject" => "/^(?!\s*$).+/",
    "message" => "/^(?!\s*$).+/"
];
$values = [
    "name" => "",
    "email" => "",
    "subject" => "",
    "message" => ""
];
$errors = [];
$title = "Contact Us";

if ( $_SERVER['REQUEST_METHOD'] == "POST" ) {
    foreach ( $values as $key => $value ) {
        $values[$key] = trim($_POST[$key]);
        if ( !preg_match($patterns[$key], $values[$key]) ) {
            $errors[] = $key;
        }
    }

    if ( empty( $errors ) ) {
        $from = "From: ".$values['name'];
        $to = "black-owling@outlook.com";

        $subjectMessage = $values['name'] . " writes about: " . $values['subject'];

        $mailMessage =  "Message from contact form of ShopifyWizz webpage. \n".
                    "Sent by ".$values['name']." (".$values['email'].") \n".
                    "User writes following: \n".
                    $values['message'];

        $mailSent = mail($to, $subjectMessage, $mailMessage, $from);

        if ( $mailSent ) {
            $title = "Thank you!";
        } else {
            $title = "Sorry, we couldn't send your letter.";
        }

    }

}

include 'header.php';

?>

    <main class="contact">
        <p>Whether you want to enquire about a quote, find out more about a package or simply say hello – we’d love to hear from you. Fill out the form below and we’ll do our best to get back to you as soon as we can!</p>

        <?php if ( !empty($errors) ) { ?>
            <p class="notification">Specified fields are invalid. Please ensure that information is correct and try again.</p>
        <?php } ?>

        <?php if ( $mailSent == true ) { ?>
            <p class="notification">Thank you for your message. We will contact you as soon as possible!</p>
        <?php } ?>

        <form action="contact.php" id="contact-form" method="POST" novalidate>

            <div class="form-part <?php if(in_array( "name", $errors ) ) echo "ui-state-invalid" ?>">
                <label for="name">Name</label>
                <input type="text"
                        id="name"
                        name="name"
                        required="required"
                        data-pattern="plainText"
                        value="<?= $values["name"] ?>">
            </div>
            <div class="form-part <?php if(in_array( "email", $errors ) ) echo "ui-state-invalid" ?>">
                <label for="email">E-mail</label>
                <input type="email"
                        id="email"
                        name="email"
                        required="required"
                        data-pattern="email"
                        value="<?= $values["email"] ?>">
            </div>

            <div class="form-part <?php if(in_array( "subject", $errors ) ) echo "ui-state-invalid" ?>">
                <label for="theme">Subject</label>
                <input type="text"
                        id="theme"
                        name="subject"
                        required="required"
                        data-pattern="anyString"
                        value="<?= $values["subject"] ?>">
            </div>
            <div class="form-part msg-container <?php if(in_array( "message", $errors ) ) echo "ui-state-invalid" ?>">
                <label for="message">message</label>
                <textarea name="message"
                            id="message"
                            placeholder="Drop us a message"
                            required="required"
                            data-pattern="anyString"><?= $values["message"] ?></textarea>
            </div>

            <input type="submit" class='button'>
        </form>
    </main>

    <?php
        include 'footer.php';
    ?>

    <script src='js/jquery.min.js'></script>
    <script src='js/misc.js'></script>
    <script src="js/jquery.guardian.min.js"></script>
    <script src="js/ajaxform.js"></script>
</body>
</html>