v2board/app/Services/MailService.php

<?php

namespace App\Services;

use App\Jobs\SendEmailJob;
use App\Models\User;
use App\Utils\CacheKey;
use Illuminate\Support\Facades\Cache;

class MailService
{
    public function remindTraffic (User $user)
    {
        if (!$user->remind_traffic) return;
        if (!$this->remindTrafficIsWarnValue(($user->u + $user->d), $user->transfer_enable)) return;
        $flag = CacheKey::get('LAST_SEND_EMAIL_REMIND_TRAFFIC', $user->id);
        if (Cache::get($flag)) return;
        if (!Cache::put($flag, 1, 24 * 3600)) return;
        SendEmailJob::dispatch([
            'email' => $user->email,
            'subject' => '在' . config('v2board.app_name', 'V2board') . '的流量使用已达到80%',
            'template_name' => 'remindTraffic',
            'template_value' => [
                'name' => config('v2board.app_name', 'V2Board'),
                'url' => config('v2board.app_url')
            ]
        ]);
    }

    private function remindTrafficIsWarnValue($ud, $transfer_enable)
    {
        if ($ud <= 0) return false;
        $percentage = $ud / $transfer_enable * 100;
        if ($percentage < 80) return false;
        if ($percentage >= 100) return false;
        return true;
    }
}