BTCoinmt_php/app/Admin/Actions/ContractEntrust/cancel.php

<?php

namespace App\Admin\Actions\ContractEntrust;

use App\Exceptions\ApiException;
use App\Models\ContractEntrust;
use App\Models\ContractPosition;
use App\Models\SustainableAccount;
use App\Models\User;
use App\Models\UserWallet;
use Dcat\Admin\Actions\Action;
use Dcat\Admin\Actions\Response;
use Dcat\Admin\Grid\RowAction;
use Dcat\Admin\Traits\HasPermissions;
use Illuminate\Contracts\Auth\Authenticatable;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;

class cancel extends RowAction
{
    /**
     * @return string
     */
    protected $title = '撤单';

    /**
     * Handle the action request.
     *
     * @param Request $request
     *
     * @return Response
     */
    public function handle(Request $request)
    {
        $id = $this->getKey();
        if (blank($id)) {
            return $this->response()->error('Processed fail.');
        }

        $entrust = ContractEntrust::query()->where('id', $id)->first();
        if (blank($entrust)) {
            return $this->response()->error('委托不存在');
        }
        if (!$entrust->can_cancel()) return $this->response()->error('当前委托不可撤销');
        Log::info($entrust);
        DB::beginTransaction();
        try {
            //更新委托
            $res = $entrust->update([
                'status' => 0,
                'cancel_time' => time(),
            ]);

            $user = User::query()->findOrFail($entrust['user_id']);
            if ($entrust['order_type'] == 1) {
                // 开仓方向
                // 合约保证金账户
                $wallet = SustainableAccount::query()->where(['user_id' => $entrust['user_id']])->first();
                if (blank($wallet)) throw new ApiException('账户类型错误');
                $log_type = 'cancel_open_position'; // 撤销合约委托
                $log_type2 = 'cancel_open_position_fee'; // 撤销合约委托
                //退还用户可用资产 冻结保证金
                $user->update_wallet_and_log($wallet['coin_id'], 'usable_balance', $entrust['margin'], UserWallet::sustainable_account, $log_type, '', $entrust['contract_id']);
                $user->update_wallet_and_log($wallet['coin_id'], 'freeze_balance', -$entrust['margin'], UserWallet::sustainable_account, $log_type, '', $entrust['contract_id']);
                $user->update_wallet_and_log($wallet['coin_id'], 'usable_balance', $entrust['fee'], UserWallet::sustainable_account, $log_type2, '', $entrust['contract_id']);
                $user->update_wallet_and_log($wallet['coin_id'], 'freeze_balance', -$entrust['fee'], UserWallet::sustainable_account, $log_type2, '', $entrust['contract_id']);
            } else {
                // 平仓方向
                $position_side = $entrust['side'] == 1 ? 2 : 1;
                // 持仓信息
                $position = ContractPosition::getPosition(['user_id' => $user['user_id'], 'contract_id' => $entrust['contract_id'], 'side' => $position_side]);
                if (blank($position)) throw new ApiException();
                // 回退持仓数量
                $position->update([
                    'avail_position' => $position->avail_position + $entrust['amount'],
                    'freeze_position' => $position->freeze_position - $entrust['amount'],
                ]);
            }

            DB::commit();
        } catch (\Exception $e) {
            DB::rollBack();
            throw new ApiException($e->getMessage());
        }

        return $this->response()->success('Processed successfully.')->refresh();
    }

    /**
     * @return string|array|void
     */
    public function confirm()
    {
        return ['确认' . $this->title . '?'];
    }

    /**
     * @param Model|Authenticatable|HasPermissions|null $user
     *
     * @return bool
     */
    protected function authorize($user): bool
    {
        return true;
    }

    /**
     * @return array
     */
    protected function parameters()
    {
        return [];
    }
}