<?php

namespace App\Admin\Forms;

use App\Exceptions\BizException;
use App\Models\AfterSale;
use App\Services\AfterSaleService;
use Dcat\Admin\Contracts\LazyRenderable;
use Dcat\Admin\Traits\LazyWidget;
use Dcat\Admin\Widgets\Form;
use Illuminate\Support\Arr;
use Illuminate\Support\Facades\DB;
use Throwable;

class AfterSaleVerify extends Form implements LazyRenderable
{
    use LazyWidget;

    /**
     * 权限判断，如不需要可以删除此方法
     *
     * @param Model|Authenticatable|HasPermissions|null $user
     *
     * @return bool
     */
    protected function authorize($user): bool
    {
        return $user->can('dcat.admin.after_sales.verify');
    }

    /**
     * Handle the form request.
     *
     * @param array $input
     *
     * @return mixed
     */
    public function handle(array $input)
    {
        $afterSaleService = new AfterSaleService();
        try {
            DB::beginTransaction();
            $afterSale = AfterSale::where('state', AfterSale::STATE_VERIFY)->findOrFail($this->payload['id']);
            if ($input['state'] == 3) {//审核通过
                $amount = Arr::get($input, 'amount', 0);
                $afterSale->load(['order', 'order.afterSales']);
                $finishedAfterSale = $afterSale->order->afterSales->filter(function ($items) {
                    if ($items->state == AfterSale::STATE_FINISH && in_array($items->type, [AfterSale::TYPE_REFUND_AND_RETURN, AfterSale::TYPE_REFUND, Aftersale::TYPE_CHANGE])) {
                        return true;
                    } else {
                        return false;
                    }
                });
                if ($amount > ($afterSale->orderProduct->total_amount - $finishedAfterSale->sum('amount'))) {
                    throw new BizException('退款金额不能大于商品实付金额');
                }
                $afterSaleService->verify($afterSale, $input['remarks3'], (int) Arr::get($input, 'amount', 0));
            } elseif ($input['state'] == 1) {//需要补充资料
                $afterSaleService->backApply($afterSale, $input['remarks1']);
            }
            DB::commit();
        } catch (Throwable $th) {
            DB::rollBack();
            report($th);
            return $this->response()->error('操作失败：'.$th->getMessage());
        }

        return $this->response()
                    ->success(__('admin.update_succeeded'))
                    ->refresh();
    }

    /**
     * Build a form here.
     */
    public function form()
    {
        $id = $this->payload['id'] ?? 0;
        $afterSale = AfterSale::findOrFail($id);
        if (in_array($afterSale->type, [1, 2])) {
            $this->currency('amount')->customFormat(function () use ($afterSale) {
                return bcdiv($afterSale->amount, 100, 2);
            })->saving(function ($amount) {
                return bcmul($amount, 100);
            })->symbol('￥');
        }

        $this->radio('state')
            ->when(3, function (Form $form) use ($afterSale) {
                $defaultRemarks = '';
                switch ($afterSale->type) {
                    case 1:
                        $defaultRemarks = '同意退款退货, 请确认退款金额，并填入回寄单号';//需要用户确认并填入回寄单号
                        break;
                    case 2:
                        $defaultRemarks = '同意退款，请确认退款金额。';
                        break;
                    case 3:
                        $defaultRemarks = '同意换货，请填入回寄单号';//需要用户确认并填入回寄单号
                        break;
                    case 4:
                        $defaultRemarks = '同意补货';//需要用户收到补货后确认，可后台关闭
                }
                $this->text('remarks3')->value($defaultRemarks);
            })
            ->when(1, function (Form $form) {
                $this->text('remarks1')->value('需要补充资料');
            })->options([
                3=>'审核通过',
                1=>'需要补充资料',
            ])->default(3);
    }
}