App\Http\Controllers\BotController::validateEmail PHP Method

    private function validateEmail($email, $botUserId)
    {
        if (!$email || !$botUserId) {
            return false;
        }
        // delete any expired codes
        SecurityCode::whereBotUserId($botUserId)->where('created_at', '<', DB::raw('now() - INTERVAL 10 MINUTE'))->delete();
        if (SecurityCode::whereBotUserId($botUserId)->first()) {
            return false;
        }
        $user = User::whereEmail($email)->whereNull('bot_user_id')->first();
        if (!$user) {
            return false;
        }
        $code = new SecurityCode();
        $code->user_id = $user->id;
        $code->account_id = $user->account_id;
        $code->code = mt_rand(100000, 999999);
        $code->bot_user_id = $botUserId;
        $code->save();
        $this->userMailer->sendSecurityCode($user, $code->code);
        return $code->code;
    }