<?php
namespace ProVM\KI\Common\Implementation;

use PHPMailer\PHPMailer\PHPMailer as BaseMailer;
use PHPMailer\PHPMailer\SMTP;
use ProVM\KI\Common\Alias\Mailer as MailerInterface;
use ProVM\KI\Common\Alias\Message;

class Mailer implements MailerInterface {
  protected $host;
  protected $port;
  protected $user;
  protected $is_secure = false;
  public function __construct(array $settings) {
    if (!isset($settings['host'])) {
      throw new \Exception('Host is missing in ' . get_called_class());
    }
    $this->host = $settings['host'];
    if (!isset($settings['username'])) {
      throw new \Exception('User name is missing in ' . get_called_class());
    }
    $this->user = (object) ['name' => null, 'password' => null];
    $this->user->name = $settings['username'];
    if (!isset($settings['password'])) {
      throw new \Exception('User password is missing in ' . get_called_class());
    }
    $this->user->password = $settings['password'];
    $this->port = 25;
    if (isset($settings['secure']) and $settings['secure'] == 'ssl') {
      $this->is_secure = true;
      $this->port = 465;
    }
    if (isset($settings['port'])) {
      $this->port = $settings['port'];
    }
  }
  public function isSecure(): bool {
    return $this->is_secure;
  }
  public function send(Message $message): bool {
    $mailer = new BaseMailer();
    $mailer->isSMTP();
    //$mailer->SMTPDebug = SMTP::DEBUG_SERVER;
    $mailer->Host = $this->host;
    $mailer->SMTPAuth   = true;
    $mailer->Username = $this->user->name;
    $mailer->Password = $this->user->password;
    $mailer->Port = $this->port;
    if ($this->isSecure()) {
      $mailer->SMTPSecure = BaseMailer::ENCRYPTION_STARTTLS;
    }

    try {
      $from = $message->getFrom();
      if ($from->name !== null) {
        $mailer->setFrom($from->email, $from->name);
      } else {
        $mailer->setFrom($from->email);
      }
      foreach ($message->getTo() as $to) {
        if ($to->name !== null) {
          $mailer->addAddress($to->email, $to->name);
        } else {
          $mailer->addAddress($to->email);
        }
      }
      $ccs = $message->getCc();
      if (!empty($ccs)) {
        foreach ($ccs as $cc) {
          if ($cc->name !== null) {
            $mailer->addCC($cc->email, $cc->name);
          } else {
            $mailer->addCC($cc->email);
          }
        }
      }
      $bccs = $message->getBcc();
      if (!empty($bccs)) {
        foreach ($bccs as $bcc) {
          if ($bcc->name !== null) {
            $mailer->addBCC($bcc->email, $bcc->name);
          } else {
            $mailer->addBCC($bcc->email);
          }
        }
      }
      $mailer->Subject = $message->getSubject();
      if ($message->isHtml()) {
        $mailer->Body = $message->getHtmlBody();
        $mailer->isHTML();
        $mailer->AltBody = $message->getBody();
      } else {
        $mailer->Body = $message->getBody();
      }

      $mailer->send();
      return true;
    } catch (\Exception $e) {
      return false;
    }
  }
}