<?php

namespace App\Services\Frontdesk;

use App\Models\AuditLog;
use App\Models\Organization;
use App\Models\Visit;

class VisitCheckOutService
{
    public function __construct(
        protected NotificationDispatcher $notifications,
        protected \App\Services\Integrations\WebhookDispatcher $webhooks,
    ) {}

    public function checkOut(Visit $visit, ?string $actorRef = null): Visit
    {
        abort_unless($visit->isInside(), 422, 'Visitor is not currently checked in.');

        $visit->update([
            'status' => Visit::STATUS_CHECKED_OUT,
            'checked_out_at' => now(),
            'checked_out_by' => $actorRef,
        ]);

        AuditLog::record(
            $visit->owner_ref,
            'visit.checked_out',
            $visit->organization_id,
            $actorRef,
            Visit::class,
            $visit->id,
            ['visitor' => $visit->visitor->full_name],
        );

        $this->notifications->visitorCheckedOut($visit);
        $this->webhooks->dispatch('visit.checked_out', $visit->fresh(['visitor', 'host']));

        return $visit->fresh(['visitor', 'host']);
    }

    public function checkOutByQrToken(string $ownerRef, string $qrToken, ?string $actorRef = null): Visit
    {
        $visit = Visit::owned($ownerRef)
            ->where('qr_token', $qrToken)
            ->currentlyInside()
            ->firstOrFail();

        return $this->checkOut($visit, $actorRef);
    }

    public function checkOutFromKiosk(
        string $ownerRef,
        Organization $organization,
        ?string $badgeCode = null,
        ?string $qrInput = null,
        ?int $branchId = null,
    ): Visit {
        $visit = $this->resolveCheckedInVisitForKiosk($ownerRef, $organization, $badgeCode, $qrInput, $branchId);

        return $this->checkOut($visit);
    }

    protected function resolveCheckedInVisitForKiosk(
        string $ownerRef,
        Organization $organization,
        ?string $badgeCode,
        ?string $qrInput,
        ?int $branchId,
    ): Visit {
        $query = Visit::owned($ownerRef)
            ->where('organization_id', $organization->id)
            ->currentlyInside()
            ->with('visitor');

        if ($branchId !== null) {
            $query->where(function ($q) use ($branchId) {
                $q->whereNull('branch_id')->orWhere('branch_id', $branchId);
            });
        }

        $badgeCode = strtoupper(trim((string) $badgeCode));
        if ($badgeCode !== '') {
            return (clone $query)->where('badge_code', $badgeCode)->firstOrFail();
        }

        $qrToken = $this->parseVisitQrToken((string) $qrInput);
        abort_unless($qrToken !== null, 422, 'Invalid badge scan.');

        return (clone $query)->where('qr_token', $qrToken)->firstOrFail();
    }

    protected function parseVisitQrToken(string $input): ?string
    {
        $trimmed = trim($input);
        if ($trimmed === '') {
            return null;
        }

        if (preg_match('#/q/([A-Za-z0-9]+)#', $trimmed, $matches)) {
            return $matches[1];
        }

        if (preg_match('/^[A-Za-z0-9]{16,64}$/', $trimmed)) {
            return $trimmed;
        }

        return null;
    }
}