<?php

/**
 * Form Validator
 *
 * @author Ivaylo Ivanov
 */
class Validator {

    private $_errors = array();
    private $_data;

    /**
     *
     * @var \Database
     */
    private $_databseInstance;

    public function __construct() {

    }

    public function validate($data) {
        if (!empty($data)) {
            $this->_data = $data;
            foreach ($data as $field_params) {

                foreach ($field_params['rules'] as $rule => $rule_value) {
                    if ($rule == 'required' || $rule == 'email' || $rule == 'available') {
                        $this->{$rule}($field_params['name'], $field_params['data']);
                    } else {
                        $this->{$rule}($field_params['name'], $field_params['data'], $rule_value);
                    }
                }
            }
        }
    }

    private function required($field_name, $field_data) {
        ($field_data == '') ? $this->_errors[] = 'Полето <strong>' . $field_name . '</strong> не е въведено !' : '';
    }

    private function email($field_name, $field_data) {
        $field_name = '';
        (!filter_var($field_data, FILTER_VALIDATE_EMAIL)) ? $this->_errors[] = 'Невалиден имейл !' : '';
    }

    public function getErrors() {
        return $this->_errors;
    }

}

/**
 * Sending Mails
 *
 * @author Ivaylo Ivanov
 */
class Mailer {

    /**
     * This is destination email address
     * @var string
     */
    private $toEmail;

    /**
     *
     * @var string
     */
    private $toName;

    /**
     * This is source email address
     * @var string
     */
    private $fromEmail;

    /**
     *  This is from sender
     * @var string
     */
    private $fromName;

    /**
     * This is return path email address
     * @var string
     */
    private $return;

    /**
     * This is subject for email
     * @var string
     */
    private $subject;

    /**
     * This is header for email
     * @var string
     */
    private $header;

    /**
     * Pass Variable
     * @param   string  $from_email    Content from email address
     * @param   string  $from_name  Sender Name
     * @param   string  $to_email      Content to email address
     * @param   string  $subject Content subject email
     * @param   string  $return  Content return path email address
     * No return value. Pass variable into this class
     */
    function __construct() {

    }

    public function setToEmail($toEmail) {
        $this->toEmail = $toEmail;
        return $this;
    }

    public function setToName($toName) {
        $this->toName = $toName;
        return $this;
    }

    public function setFromEmail($fromEmail) {
        $this->fromEmail = $fromEmail;
        return $this;
    }

    public function setFromName($fromName) {
        $this->fromName = $fromName;
        return $this;
    }

    public function setReturn($return) {
        $this->return = $return;
        return $this;
    }

    public function setSubject($subject) {
        $this->subject = $subject;
        return $this;
    }

    /**
     * Изпраща обикновен Имейл
     * @param   string  $message    Content for this email
     * No return value. Send email
     * @access  public
     * @access  static
     */
    public function simpleMail($message) {
        $this->header = "From: " . $this->fromName . ' <' . $this->fromEmail . ">\n";
        $this->header .= "Reply-To: " . $this->fromEmail . "\n";
        $this->header .= "Return-Path: " . $this->return . "\n";
        $this->header .= "X-Mailer: PHP/" . phpversion() . "\n";
        $this->send($message);
    }

    /**
     * Изпраща HTML емаил
     * @param type $html
     * @param type $plainText
     */
    public function htmlMail($html) {
        // Уникално ид
        $boundary = md5(uniqid(time()));

        // Хедъри
        $this->header = "From: " . $this->fromName . ' <' . $this->fromEmail . ">" . "\r\n";
        $this->header .= "To: " . $this->toEmail . "\r\n";
        $this->header .= "Return-Path: " . $this->return . "\r\n";
        $this->header .= "MIME-Version: 1.0\n";
        $this->header .= 'Content-Type: multipart/alternative; boundary="' . $boundary . '"' . "\r\n";

        // Текст версия
        $msgPlainText = "--" . $boundary . "\r\n";
        $msgPlainText .= 'Content-Type: text/plain; charset="iso-8589-1"' . "\r\n";
        $msgPlainText .= "Content-Transfer-Encoding: 8bit" . "\r\n";
        $msgPlainText .= "If you are seeing this is because you may need to change your" . "\r\n";
        $msgPlainText .= "preferred message format from HTML to plain text." . "\r\n" . "\r\n";


        // HTML Версия
        $msgHtml = "--" . $boundary . "\r\n";
        $msgHtml .= 'Content-Type: text/html; charset="iso-8589-1"' . "\r\n";
        $msgHtml .= "Content-Transfer-Encoding: 8bit" . "\r\n" . "\r\n";
        $msgHtml .= $html;

        // Събиране
        $message = $msgPlainText . $msgHtml . PHP_EOL;

        // Изпращане
        $this->send($message);
    }

    /**
     * Send simple email with attachment
     * @param   string  $file       File for attachment (file name or path of file)
     * @param   string  $plainText  Message in plain text format
     * No return value. Send simple email with attachment
     * @access  public
     * @access  static
     */
    public function simpleAttachment($file, $plainText = '') {
        $handle = fopen($file, 'rb');
        $data = fread($handle, filesize($file));
        $data = chunk_split(base64_encode($data));
        $filetype = mime_content_type($file);

        $boundary = md5(uniqid(time()));
        $this->header = "From: " . $this->fromEmail . "\r\n";
        $this->header .= "To: " . $this->toEmail . "\r\n";
        $this->header .= "Return-Path: " . $this->return . "\r\n";
        $this->header .= "MIME-Version: 1.0\r\n";
        $this->header .= 'Content-Type: multipart/mixed; boundary="' . $boundary . '"';

        // Text Version
        $msgPlainText = "--" . $boundary . "\n";
        $msgPlainText .= "Content-Type: text/plain; charset=utf-8\r\n";
        $msgPlainText .= "Content-Transfer-Encoding: 8bit\r\n";
        if ($plainText != '') {
            $msgPlainText .= $plainText . "\r\n";
        }

        // Attachment Version
        $attach = "--" . $boundary . "\r\n";
        $attach .= "Content-Type: " . $filetype . "; name=\"" . $file . "\"\r\n";
        $attach .= "Content-Transfer-Encoding: base64 \r\n";
        // Need two end of lines
        $attach .= "Content-Disposition: attachment; filename=\"" . $file . "\"\r\n\r\n";
        $attach .= $data . "\r\n\r\n";

        $message = $msgPlainText . $attach;
        // Send Email
        $this->send($message);
    }

    /**
     * Изпраща HTML емаил с прикачен файл
     * @param type $file
     * @param type $html
     * @param type $plainText
     */
    public function htmlAttachment($file, $html, $plainText = '') {
        $handle = fopen($file, 'rb');
        $data = fread($handle, filesize($file));
        $data = chunk_split(base64_encode($data));
        $filetype = mime_content_type($file);

        $boundary = md5(uniqid(time()));
        $this->header = "From: " . $this->fromEmail . "\n";
        $this->header .= "To: " . $this->toEmail . "\n";
        $this->header .= "Return-Path: " . $this->return . "\n";
        $this->header .= "MIME-Version: 1.0\n";
        $this->header .= "Content-Type: multipart/related; boundary=\"" . $boundary . "\"\n";

        // Text Version
        $msgPlainText = "--" . $boundary . "\n";
        $msgPlainText .= "Content-Type: text/plain; charset=iso-8589-1\n";
        $msgPlainText .= "Content-Transfer-Encoding: 8bit\n";
        $msgPlainText .= "If you are seeing this is because you may need to change your\n";
        $msgPlainText .= "preferred message format from HTML to plain text.\n\n";
        if ($plainText == '') {
            $plainText = strip_tags($html);
        }
        $msgPlainText .= $plainText . "\n";

        // HTML Version
        $msgHtml = "--" . $boundary . "\n";
        $msgHtml .= "Content-Type: text/html; charset=iso-8589-1\n";
        $msgHtml .= "Content-Transfer-Encoding: 8bit\n";
        $msgHtml .= $html . "\n";

        // Attachment Version
        $attach = "--" . $boundary . "\n";
        $attach .= "Content-Type: " . $filetype . "; name=\"" . $file . "\"\n";
        $attach .= "Content-Transfer-Encoding: base64 \n";
        // Need two end of lines
        $attach .= "Content-Disposition: attachment; filename=\"" . $file . "\"\n\n";
        $attach .= $data . "\n\n";

        $message = "Content-Type: multipart/alternative; boundary=\"" . $boundary . "\"";
        $message .= $msgPlainText . $msgHtml . $attach;
        // Send Email

        $this->send($message);
    }

    /**
     * return function mail()
     * @param   string  $message    Content for this email
     * return function mail()
     * @access  private
     * @access  static
     */
    private function send($message) {

        return mail($this->toEmail, $this->subject, $message, $this->header, '-f' . $this->return);
    }

}

if (!empty($_POST)) {
    $fromEmail = 'mail@mail.com';
    $fromName = 'Име на фирмата';
    $subject = '';
    header('Content-Type: application/json; charset=utf-8');
    $return = [];
    $validate = new Validator();
    $postData = [
        'name' => ['name' => 'Име', 'data' => filter_input(INPUT_POST, 'name'), 'rules' => ['required' => true]],
        'family' => ['name' => 'Фамилия', 'data' => filter_input(INPUT_POSTt, 'family'), 'rules' => ['required' => true]],
        'address' => ['name' => 'Адрес', 'data' => filter_input(INPUT_POST, 'address'), 'rules' => ['required' => true]],
        'email' => ['name' => 'Емейл', 'data' => filter_input(INPUT_POST, 'email'), 'rules' => ['required' => true, 'email' => true]],
        'total' => ['name' => 'Тотал', 'data' => filter_input(INPUT_POST, 'total'), 'rules' => ['required' => true]],
        'selectedItems' => ['name' => 'Избрани продукти', 'data' => filter_input(INPUT_POST, 'selectedItems'), 'rules' => ['required' => true]],
        'phone' => ['name' => 'Телефон', 'data' => filter_input(INPUT_POST, 'phone'), 'rules' => ['required' => true]],
        'text' => ['name' => 'Допълнителна информация', 'data' => filter_input(INPUT_POST, 'text'), 'rules' => []]
    ];

    $validate->validate($postData);
    $errors = $validate->getErrors();
    if (!empty($errors)) {
        $return['success'] = false;
        foreach ($errors as $error) {
            $return['errors'][] = $error;
        }
        echo json_encode($return);
        die();
    } else {
        $html = '<table>';
        $html .= "<tr><td colspan='2'>Вашата заявка бе приета успешно.</td></tr>";
        $html .= "<tr><td>Име и фамилия</td><td>{$postData['name']['data']} {$postData['family']['data']}</td></tr>";
        $html .= "<tr><td>Телефон:/td><td>{$postData['phone']['data']}</td></tr>";
        $html .= "<tr><td>Имейл:/td><td>{$postData['email']['data']}</td></tr>";
        $html .= "<tr><td>Адрес:/td><td>{$postData['address']['data']}</td></tr>";
        $html .= "<tr><td>Избрани продукти:td><td>{$postData['selectedItems']['data']}</td></tr>";
        $html .= "<tr><td>Допълнителна Информация:<br/>{$postData['text']['data']}</td></tr>";
        $html .= "<tr><td>Цена:<br/>{$postData['total']['data']}</td></tr>";
        $html .= '</table';
        $mailer = new Mailer();
        $mailer->setFromEmail($fromEmail)
                ->setFromName($fromName)
                ->setSubject($subject)
                ->setToEmail($postData['email']['data'])
                ->setToName($postData['email']['data'])
                ->htmlMail($html);
        $mailer->setFromEmail($fromEmail)
                ->setFromName($fromName)
                ->setSubject($subject)
                ->setToEmail($fromEmail)
                ->setToName($fromName)
                ->htmlMail($html);

        $return = [
            'success' => true,
            'message' => 'Вашата заявка бе приета успешно !'
        ];
        echo json_encode($return);
        die();
    }
}