<?php
namespace ProVM\Common\Service\Remote;

use DateTimeInterface;
use Ddeboer\Imap\Exception\MessageDoesNotExistException;
use Psr\Log\LoggerInterface;
use Ddeboer\Imap\ConnectionInterface;
use Ddeboer\Imap\MailboxInterface;
use Ddeboer\Imap\MessageInterface;
use Ddeboer\Imap\SearchExpression;
use Ddeboer\Imap\Search\Date\On;
use Ddeboer\Imap\Search\Email\From;
use Ddeboer\Imap\Search\Text\Subject;
use ProVM\Common\Exception\EmptyMailbox;

class Messages extends Base
{
    public function __construct(ConnectionInterface $connection, LoggerInterface $logger)
    {
        $this->setConnection($connection)
            ->setLogger($logger);
    }

    public function getAll(MailboxInterface $mailbox, int $start = 0, ?int $amount = null): array
    {
        if ($mailbox->count() === 0) {
            throw new EmptyMailbox($mailbox);
        }

        if ($amount === null) {
            $amount = $mailbox->count() - $start;
        }

        $it = $mailbox->getIterator();
        for ($i = 0; $i < $start; $i ++) {
            $it->next();
        }

        $messages = [];
        for ($i = $start; $i < $start + $amount; $i ++) {
            if (!$it->valid()) {
                break;
            }
            $messages[$i] = $it->current();
            $it->next();
        }
        return $messages;
    }
    public function get(MailboxInterface $mailbox, string $subject, string $from, DateTimeInterface $dateTime): MessageInterface
    {
        if ($mailbox->count() === 0) {
            $this->getLogger()->notice("Mailbox {$mailbox->getName()} is empty");
            throw new EmptyMailbox($mailbox);
        }

        $query = new SearchExpression();
        $query->addCondition(new Subject($subject));
        $query->addCondition(new From($from));
        $query->addCondition(new On($dateTime));

        $result = $mailbox->getMessages($query);
        if (count($result) === 0) {
            throw new MessageDoesNotExistException("{$mailbox->getName()}: {$subject} - {$from} [{$dateTime->format('Y-m-d H:i:s')}]");
        }
        return $result->current();
    }
}