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<?php

namespace App\Notify;
use App\Notify\Notifiable;
use App\Notify\NotifyProcess;
use Mailjet\Client;
use Mailjet\Resources;
use PHPMailer\PHPMailer\Exception;
use PHPMailer\PHPMailer\PHPMailer;
use SendGrid;
use SendGrid\Mail\Mail;

class Email extends NotifyProcess implements Notifiable {

/**
     * Email of receiver
     *
     * @var string
     */
    public $email;

/**
     * Assign value to properties
     *
     * @return void
     */
    public function __construct() {
        $this->statusField    = 'email_status';
        $this->body           = 'email_body';
        $this->globalTemplate = 'email_template';
        $this->notifyConfig   = 'mail_config';
    }

/**
     * Send notification
     *
     * @return void|bool
     */
    public function send() {

if (!gs('en')) {
            return false;
        }
        //get message from parent
        $message = $this->getMessage();
        if ($message) {
            //Send mail
            $methodName = gs('mail_config')->name;
            $method     = $this->mailMethods($methodName);
            try {
                $this->$method();
                $this->createLog('email');
            } catch (\Exception $e) {
                $this->createErrorLog($e->getMessage());
                session()->flash('mail_error', $e->getMessage());
            }
        }

}

/**
     * Get the method name
     *
     * @return string
     */
    protected function mailMethods($name) {
        $methods = [
            'php'      => 'sendPhpMail',
            'smtp'     => 'sendSmtpMail',
            'sendgrid' => 'sendSendGridMail',
            'mailjet'  => 'sendMailjetMail',
        ];
        return $methods[$name];
    }

protected function sendPhpMail() {
        $sentFromName  = $this->getEmailFrom()['name'];
        $sentFromEmail = $this->getEmailFrom()['email'];
        $headers       = "From: $sentFromName <$sentFromEmail> \r\n";
        $headers .= "Reply-To: $sentFromName <$sentFromEmail> \r\n";
        $headers .= "MIME-Version: 1.0\r\n";
        $headers .= "Content-Type: text/html; charset=utf-8\r\n";
        @mail($this->email, $this->subject, $this->finalMessage, $headers);
    }

protected function sendSmtpMail() {
        $mail   = new PHPMailer(true);
        $config = gs('mail_config');
        //Server settings
        $mail->isSMTP();
        $mail->Host     = $config->host;
        $mail->SMTPAuth = true;
        $mail->Username = $config->username;
        $mail->Password = $config->password;
        if ($config->enc == 'ssl') {
            $mail->SMTPSecure = PHPMailer::ENCRYPTION_SMTPS;
        } else {
            $mail->SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS;
        }
        $mail->Port    = $config->port;
        $mail->CharSet = 'UTF-8';
        //Recipients
        $mail->setFrom($this->getEmailFrom()['email'], $this->getEmailFrom()['name']);
        $mail->addAddress($this->email, $this->receiverName);
        $mail->addReplyTo($this->getEmailFrom()['email'], $this->getEmailFrom()['name']);
        // Content
        $mail->isHTML(true);
        $mail->Subject = $this->subject;
        $mail->Body    = $this->finalMessage;
        $mail->send();
    }

protected function sendSendGridMail() {
        $sendgridMail = new Mail();
        $sendgridMail->setFrom($this->getEmailFrom()['email'], $this->getEmailFrom()['name']);
        $sendgridMail->setSubject($this->subject);
        $sendgridMail->addTo($this->email, $this->receiverName);
        $sendgridMail->addContent("text/html", $this->finalMessage);
        $sendgrid = new SendGrid(gs('mail_config')->appkey);
        $response = $sendgrid->send($sendgridMail);
        if ($response->statusCode() != 202) {
            throw new Exception(json_decode($response->body())->errors[0]->message);

}
    }

protected function sendMailjetMail() {
        $mj   = new Client(gs('mail_config')->public_key, gs('mail_config')->secret_key, true, ['version' => 'v3.1']);
        $body = [
            'Messages' => [
                [
                    'From'     => [
                        'Email' => $this->getEmailFrom()['email'],
                        'Name'  => $this->getEmailFrom()['name'],
                    ],
                    'To'       => [
                        [
                            'Email' => $this->email,
                            'Name'  => $this->receiverName,
                        ],
                    ],
                    'Subject'  => $this->subject,
                    'TextPart' => "",
                    'HTMLPart' => $this->finalMessage,
                ],
            ],
        ];
        $response = $mj->post(Resources::$Email, ['body' => $body]);
    }

/**
     * Configure some properties
     *
     * @return void
     */
    public function prevConfiguration() {
        if ($this->user) {
            $this->email        = $this->user->email;
            $this->receiverName = $this->user->fullname;
        }
        $this->toAddress = $this->email;
    }

private function getEmailFrom() {
        $this->sentFrom = $this->template->email_sent_from_address ?? gs('email_from');
        return [
            'email' => $this->sentFrom,
            'name'  => $this->replaceTemplateShortCode($this->template->email_sent_from_name ?? gs('site_name')),
        ];
    }
}