<?php

namespace App\Security\Voter;

use App\Entity\Disposition;
use App\Entity\Upload;
use App\Entity\User;
use Symfony\Bundle\SecurityBundle\Security;
use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
use Symfony\Component\Security\Core\Authorization\Voter\Vote;
use Symfony\Component\Security\Core\Authorization\Voter\Voter;

class DispositionVoter extends Voter
{
    public const VIEW = 'VIEW';
    public const EDIT = 'EDIT';
    public const DELETE = 'DELETE';
    public const CONTRACT = 'CONTRACT';
    public const CONTRACT_SUPPLEMENTARY = 'CONTRACT_SUPPLEMENTARY';
    public const ADMIN_DOCUMENT_UPLOAD = 'ADMIN_DOCUMENT_UPLOAD';
    public const INVOICE = 'INVOICE';
    public const FEEDBACK = 'FEEDBACK';
    public const CALL_OFF = 'CALL_OFF';
    public const MANAGE_RECEIPTS = 'MANAGE_RECEIPTS';

    public function __construct(private readonly Security $security)
    {
    }

    protected function supports(string $attribute, mixed $subject): bool
    {
        if (!$subject instanceof Disposition) {
            return false;
        }

        return in_array($attribute, [
            static::VIEW,
            static::EDIT,
            static::DELETE,
            static::CONTRACT,
            static::CONTRACT_SUPPLEMENTARY,
            static::ADMIN_DOCUMENT_UPLOAD,
            static::INVOICE,
            static::FEEDBACK,
            static::CALL_OFF,
            static::MANAGE_RECEIPTS,
        ]);
    }

    protected function voteOnAttribute(string $attribute, mixed $subject, TokenInterface $token, ?Vote $vote = null): bool
    {
        /** @var Disposition $disposition */
        $disposition = $subject;

        return match ($attribute) {
            static::VIEW, static::EDIT => $this->security->isGranted('ROLE_ADMINISTRATIVE')
                || $this->assertTeamerAccess($token, $disposition),
            // The documents themselves do not exist on a skip-formalities assignment, so neither
            // the blank PDFs nor the upload screens may be reachable for it.
            static::CONTRACT, static::INVOICE => false === $disposition->isSkipFormalities()
                && ($this->security->isGranted('ROLE_ADMINISTRATIVE')
                    || $this->assertTeamerAccess($token, $disposition)),
            static::DELETE => $this->security->isGranted('ROLE_ADMIN'),
            static::FEEDBACK => false === $disposition->isSkipFormalities()
                && ($this->security->isGranted('ROLE_ADMINISTRATIVE')
                    || $this->assertHouseManagerAccess($token, $disposition)),
            static::CONTRACT_SUPPLEMENTARY => $this->assertContractUploadAllowed($disposition),
            static::ADMIN_DOCUMENT_UPLOAD => $this->assertAdminDocumentUploadAllowed($disposition),
            static::CALL_OFF => $this->security->isGranted('ROLE_ADMINISTRATIVE')
                && Disposition::STATUS_CALLED_OFF !== $disposition->getStatus(),
            static::MANAGE_RECEIPTS => $this->assertManageReceiptsAllowed($token, $disposition),
            default => false,
        };
    }

    /**
     * Whether Belege backing the Honorarnote may be added, listed or deleted.
     *
     * This is deliberately a permission and not a workflow transition. The disposition state
     * machine offers upload_invoice only from "ended", so a teamer whose invoice is being checked
     * has no transition available at all - which is precisely the phase in which receipts must
     * stay manageable. Receipts also have to survive the ended -> checking_invoice -> ended
     * bouncing that upload_invoice and reject_invoice cause, so the window is expressed as the two
     * places themselves rather than as anything workflow_can() could answer. Do not "tidy" this
     * into a workflow check.
     *
     * Once the invoice is accepted the disposition leaves for "completed" and the receipts are
     * deleted (see Administrative\Document\CheckController), so the window closes on its own.
     */
    private function assertManageReceiptsAllowed(TokenInterface $token, Disposition $disposition): bool
    {
        if (true === $disposition->isSkipFormalities()) {
            return false;
        }

        if (false === $this->security->isGranted('ROLE_ADMINISTRATIVE')
            && false === $this->assertTeamerAccess($token, $disposition)) {
            return false;
        }

        return in_array($disposition->getStatus(), [
            Disposition::STATUS_ENDED,
            Disposition::STATUS_CHECKING_INVOICE,
        ], true);
    }

    private function assertHouseManagerAccess(TokenInterface $token, Disposition $disposition): bool
    {
        if (false === $this->security->isGranted('ROLE_HOUSE_MANAGER')) {
            return false;
        }

        if (Disposition::STATUS_CALLED_OFF === $disposition->getStatus()) {
            return false;
        }

        /** @var User $user */
        $user = $token->getUser();

        $destination = $disposition
            ->getAssignment()
            ->getDestination()
        ;

        $isMatchingHotel = $user->hasHotelCodeMatch($destination->getHotelCode());
        $isPast = $destination->getDateTo() < new \DateTimeImmutable();

        return $isMatchingHotel && $isPast;
    }

    private function assertTeamerAccess(TokenInterface $token, Disposition $disposition): bool
    {
        if (false === $this->security->isGranted('ROLE_TEAMER')) {
            return false;
        }

        /** @var User $user */
        $user = $token->getUser();

        return $user->getTeamer() === $disposition->getTeamer();
    }

    private function assertContractUploadAllowed(Disposition $disposition): bool
    {
        if (false === $this->security->isGranted('ROLE_ADMINISTRATIVE')) {
            return false;
        }

        if (true === $disposition->isSkipFormalities()) {
            return false;
        }

        if (Disposition::STATUS_CALLED_OFF === $disposition->getStatus()) {
            return false;
        }

        $existingContract = $disposition->getDocumentByType(Upload::TYPE_CONTRACT);

        return null === $existingContract || Upload::STATUS_REJECTED === $existingContract->getStatus();
    }

    private function assertAdminDocumentUploadAllowed(Disposition $disposition): bool
    {
        if (false === $this->security->isGranted('ROLE_ADMINISTRATIVE')
            && false === $this->security->isGranted('ROLE_ADMIN')) {
            return false;
        }

        if (true === $disposition->isSkipFormalities()) {
            return false;
        }

        return Disposition::STATUS_CALLED_OFF !== $disposition->getStatus();
    }
}