ladill-transfer/app/Services/Transfer/TransferOwnerMailService.php

<?php

namespace App\Services\Transfer;

use App\Models\Transfer;
use App\Notifications\TransferOwnerGraceNotification;
use Carbon\CarbonInterface;

/** Owner emails when transfers enter grace and before files are deleted. */
class TransferOwnerMailService
{
    /** @return list<string> */
    public function graceMilestones(): array
    {
        return array_values(array_map(
            'strval',
            (array) config('transfer.owner_grace_email_milestones', ['grace_entered', '7', '3', '1']),
        ));
    }

    public function notifyGraceEntered(Transfer $transfer): bool
    {
        return $this->notifyOwner($transfer, 'grace_entered');
    }

    public function processGraceReminders(): int
    {
        $sent = 0;

        Transfer::query()
            ->where('status', Transfer::STATUS_GRACE)
            ->whereNotNull('grace_ends_at')
            ->where('grace_ends_at', '>', now())
            ->with('user')
            ->chunkById(100, function ($transfers) use (&$sent) {
                foreach ($transfers as $transfer) {
                    foreach ($this->dueGraceDayMilestones($transfer) as $milestone) {
                        if ($this->notifyOwner($transfer, $milestone)) {
                            $sent++;
                        }
                    }
                }
            });

        return $sent;
    }

    /** @return list<string> */
    private function dueGraceDayMilestones(Transfer $transfer): array
    {
        if (! $transfer->grace_ends_at instanceof CarbonInterface) {
            return [];
        }

        $daysRemaining = (int) now()->startOfDay()->diffInDays(
            $transfer->grace_ends_at->copy()->startOfDay(),
            false,
        );

        $due = [];
        foreach (['7', '3', '1'] as $milestone) {
            if ($daysRemaining === (int) $milestone && in_array($milestone, $this->graceMilestones(), true)) {
                $due[] = $milestone;
            }
        }

        return $due;
    }

    private function notifyOwner(Transfer $transfer, string $milestone): bool
    {
        if (! in_array($milestone, $this->graceMilestones(), true)) {
            return false;
        }

        if ($transfer->ownerMilestoneSent($milestone)) {
            return false;
        }

        $user = $transfer->user;
        if ($user === null) {
            return false;
        }

        $user->notify(new TransferOwnerGraceNotification(
            $transfer->loadMissing(['files', 'qrCode']),
            $milestone,
        ));

        $transfer->markOwnerMilestoneSent($milestone);

        return true;
    }
}