<?php

namespace App\Service\Cron;

use App\Email\Mailer;
use App\Entity\Disposition;
use App\Entity\Upload;
use App\Repository\DispositionRepository;
use Doctrine\ORM\Query\Expr\Join;
use Psr\Log\LoggerInterface;
use Symfony\Component\Console\Style\SymfonyStyle;

class UploadReminderService
{
    public function __construct(
        private readonly DispositionRepository $dispositionRepository,
        private readonly Mailer $mailer,
        private readonly LoggerInterface $logger
    ) {
    }

    public function sendContractUploadReminders(): string
    {
        // Contracts have to be uploaded before assignment's begin date. Reminder is
        // sent 7 and 14 days after disposition has been created.
        $contractDueDateFirst = (new \DateTimeImmutable())->modify('-7 days');
        $contractDueDateSecond = (new \DateTimeImmutable())->modify('-14 days');

        // Find dispositions of assignments with due contract upload
        $qb = $this->dispositionRepository->createQueryBuilder('disposition');

        $dispositions = $qb
            ->select('disposition', 'assignment', 'destination')
            ->innerJoin('disposition.assignment', 'assignment')
            ->innerJoin('assignment.destination', 'destination')
            ->leftJoin('disposition.documents', 'document', Join::WITH, 'document.type = :documentType')
            ->where($qb->expr()->andX(
                $qb->expr()->isNull('document'),
                $qb->expr()->orX(
                    $qb->expr()->eq('document.createdAt', ':contractDueDateFirst'),
                    $qb->expr()->eq('document.createdAt', ':contractDueDateSecond'),
                )
            ))
            ->setParameters([
                'documentType' => Upload::TYPE_CONTRACT,
                'contractDueDateFirst' => $contractDueDateFirst,
                'contractDueDateSecond' => $contractDueDateSecond,
            ])
            ->getQuery()
            ->getResult()
        ;

        if (0 === $count = count($dispositions)) {
            $message = 'No due contract upload reminders to be sent to teamers';
            $this->logger->info($message);

            return $message;
        }

        foreach ($dispositions as $disposition) {
            $teamer = $disposition->getTeamer();

            $this->mailer->createAndSendEmail([
                'disposition' => $disposition,
            ], [
                'to' => $teamer->getCommunication()->getEmail(),
                'subject' => 'Reminder: Fehlende Dokumente',
                'template' => 'email/reminder_contract_upload.html.twig',
            ]);
        }

        $message = 'Sent '.$count.' due contract upload reminders to teamers';
        $this->logger->info($message);

        return $message;
    }

    public function sendInvoiceUploadReminders(): string
    {
        // Invoices have to be uploaded until 14 days after end of assignment. Reminder
        // is sent three days before end of this period thus on the 11th day after end of assignment.
        $invoiceDueDate = (new \DateTimeImmutable())->modify('-11 days');

        // Find dispositions of assignments with due invoice upload
        $qb = $this->dispositionRepository->createQueryBuilder('disposition');

        $dispositions = $qb
            ->select('disposition', 'assignment', 'destination')
            ->innerJoin('disposition.assignment', 'assignment')
            ->innerJoin('assignment.destination', 'destination')
            ->leftJoin('disposition.documents', 'document', Join::WITH, 'document.type = :documentType')
            ->where($qb->expr()->andX(
                $qb->expr()->isNull('document'),
                $qb->expr()->orX(
                // Due date can be determined by assignment's date which potentially overrides destination date
                    $qb->expr()->andX(
                        $qb->expr()->isNotNull('assignment.dateTo'),
                        $qb->expr()->eq('assignment.dateTo', ':dateTo')
                    ),
                    $qb->expr()->eq('destination.dateTo', ':dateTo'),
                )
            ))
            ->setParameters([
                'documentType' => Upload::TYPE_INVOICE,
                'dateTo' => $invoiceDueDate,
            ])
            ->getQuery()
            ->getResult()
        ;

        if (0 === $count = count($dispositions)) {
            $message = 'No due invoice upload reminders to be sent to teamers';
            $this->logger->info($message);

            return $message;
        }

        foreach ($dispositions as $disposition) {
            $teamer = $disposition->getTeamer();

            $this->mailer->createAndSendEmail([
                'disposition' => $disposition,
            ], [
                'to' => $teamer->getCommunication()->getEmail(),
                'subject' => 'Reminder: Fehlende Dokumente',
                'template' => 'email/reminder_invoice_upload.html.twig',
            ]);
        }

        $message = 'Sent '.$count.' due invoice upload reminders to teamers';
        $this->logger->info($message);

        return $message;
    }
}