hainan/app/AdminAgent/Forms/IndustryProductBuy.php

<?php

namespace App\AdminAgent\Forms;

use App\AdminAgent\Renderable\SelectIndustryProductSpec;
use App\Common\OrderStatus;
use App\Common\PayType;
use App\Common\ProductStatus;
use App\Models\IndustryOrder;
use App\Models\IndustryProduct;
use App\Models\IndustryProductSpec;
use Dcat\Admin\Admin;
use Dcat\Admin\Widgets\Alert;
use Dcat\Admin\Widgets\Form;
use Illuminate\Support\Facades\DB;

class IndustryProductBuy extends Form
{
    /**
     * Handle the form request.
     *
     * @param array $input
     *
     * @return mixed
     */
    public function handle(array $input)
    {
		$pid = request()->input('pid');

		$industry = IndustryProduct::where([
			['status', '=', ProductStatus::ON_SALE],
			['stock', '>', 0],
		])->find($pid);
		if (!$industry) {
			return $this->response()->error('产品不存在或已下架');
		}

		//最小起购数
		if ($input['num'] < $industry->min_sale) {
			return $this->response()->error('购买数量不能小于最低起购数：' . $industry->min_sale);
		}

		//产品规格
		$spec = IndustryProductSpec::where([
			['industry_product_id', '=', $industry->id],
			['stock', '>=', $input['num']],
		])->find($input['industry_product_spec_id']);
		if (!$spec) {
			return $this->response()->error('产品规格不存在或库存不足');
		}

		//生成订单号
		list($micro, $sec) = explode(' ', microtime());
		$micro = str_pad(floor($micro * 1000000), 6, 0, STR_PAD_LEFT);
		$order_no = date('ymdHis', $sec) . $micro . mt_rand(1000, 9999);

		DB::beginTransaction();
		try {
			//规格减库存
			$allow_row = IndustryProductSpec::where([
				['id', '=', $spec->id],
				['stock', '>=', $input['num']],
			])->decrement('stock', $input['num']);
			if (!$allow_row) {
				throw new \Exception('产品规格库存不足！');
			}

			//产品表减库存
			$industry->stock = $industry->stock - $input['num'];
			$industry->save();

			if ($input['pay_type'] == PayType::DEPOSIT_PAY) {
				$prepay_price = $industry->deposit * $input['num'];
			} else if ($input['pay_type'] == PayType::EARNEST_PAY) {
				$prepay_price = $industry->earnest * $input['num'];
			} else {
				$prepay_price = 0;
			}

			$order = IndustryOrder::create([
				'agent_id' => Admin::user()->id,
				'supplier_id' => $industry->supplier_id,
				'order_no' => $order_no,
				'industry_product_id' => $industry->id,
				'industry_product_spec_id' => $input['industry_product_spec_id'],
				'num' => $input['num'],
				'price' => $input['num'] * $spec['price'],
				'name' => $input['name'],
				'mobile' => $input['mobile'],
				'title' => $industry->title,
				'picture' => $industry->pictures[0] ?? '',
				'status' => $input['pay_type'] == PayType::OFFLINE ? OrderStatus::OFFLINE_UNPAID : OrderStatus::UNPAID,
				'pay_type' => $input['pay_type'],
				'paid_money' => 0,
				'paid_at' => null,
				'trade_deposit' => $industry->single_deposit * $input['num'],
				'timeout' => null,
				'created_at' => now(),
				'prepay_price' => $prepay_price,
				'single_price' => $industry->single_deposit,
				'info' => json_encode($input['info']),
			]);

			DB::commit();
			return $this->response()->success('购买成功！')->redirect('industry_order/list/' . $order->id);
		} catch (\Exception $e) {
			DB::rollBack();
			return $this->response()->error($e->getMessage());
		}
    }

    /**
     * Build a form here.
     */
    public function form()
    {
    	//处理图片上传
		$_file = request()->file('_file_');
		if ($_file && $_file->isValid()) {
			$this->image(request()->input('upload_column'))->uniqueName()->saveFullUrl();
			return true;
		}

		$pid = request()->input('pid');
		$industry = IndustryProduct::with('diyForm.fields')
			->where([
				['status', '=', ProductStatus::ON_SALE],
				['stock', '>', 0],
			])->find($pid);

		if (!$industry) {
			return $this->response()->error('产品不存在或已下架');
		}
		Admin::translation('industry-order');

		$this->selectTable('industry_product_spec_id', '选择产品规格')
			->required()
			->title('选择产品规格')
			->dialogWidth('80%;min-width:825px;')
			->from(SelectIndustryProductSpec::make(['industry_product_id' => $pid]))
			->model(IndustryProductSpec::class);

		//购买人信息
		$this->hidden('pid')->value($industry->id); //pid要跟上面的request中的一样，否则提交出错
		$this->number('num')->min($industry->min_sale)->required()->default($industry->min_sale);
		$this->text('name', '您的姓名')->default(Admin::user()->director)->required();
		$this->mobile('mobile', '您的手机号')->default(Admin::user()->contact_phone)->required();

		//支付信息
		$pay_type = [PayType::ONLINE, PayType::OFFLINE];
		if ((float)$industry->deposit) { //订金支付
			$pay_type = [...$pay_type, PayType::DEPOSIT_PAY];
		}
		if ((float)$industry->earnest) { //定金支付
			$pay_type = [...$pay_type, PayType::EARNEST_PAY];
		}
		$options = array_filter(PayType::array(), fn($k) => in_array($k, $pay_type), ARRAY_FILTER_USE_KEY);
		$this->select('pay_type')
			->options($options)->default(PayType::ONLINE)->required()
			->when(PayType::DEPOSIT_PAY, function () use ($industry) {
				$this->display('deposit', '订金')->customFormat(fn() => $industry->deposit);
			})->when(PayType::EARNEST_PAY, function () use ($industry) {
				$this->display('earnest', '定金')->customFormat(fn() => $industry->earnest);
			});

		//信息收集表单
		if (!empty($industry->diyForm->fields)) {
			$this->html(Alert::make(null, '客户信息收集表单')->warning())->width(12);
			$fields = $industry->diyForm->fields->toArray();
			foreach ($fields as $v) {
				if ($v['type'] == 'radio' || $v['type'] == 'checkbox') {
					$this->{$v['type']}('info.' . $v['field'])->options(array_combine($v['options'], $v['options']))->required((bool)$v['required']);
				} else if ($v['type'] == 'image') {
					$this->image('info.' . $v['field'])->uniqueName()->saveFullUrl()->required((bool)$v['required']);
				} else {
					$this->{$v['type']}('info.' . $v['field'])->required((bool)$v['required']);
				}
			}
		}

		$this->html(Alert::make(null, '产品信息')->info())->width(12);
		$this->text('', '购买产品')->default($industry->title)->disable();
		$this->text('', '单价')->default($industry->price)->disable();
		$this->text('', '库存')->default($industry->stock)->disable();
		$this->text('', '起购数量')->default($industry->min_sale)->disable();
		$this->image('picture', '产品图')->default($industry->pictures)->disable();
		$this->display('', '旅游须知')->default(fn() => preg_replace('/<script.*?>.*?<\/script>/is', '', $industry->know))->disable();
		$this->display('', '产品详情')->default(fn() => preg_replace('/<script.*?>.*?<\/script>/is', '', $industry->content))->disable();
    }

    /**
     * The data of the form.
     *
     * @return array
     */
    public function default()
    {
        return [];
    }
}