hainan/app/Http/Controllers/Api/OrderController.php

<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Models\AgentProduct;
use App\Models\Order;
use Illuminate\Http\Request;

/**
 * 订单
 * Class OrderController
 * @package App\Http\Controllers\Api
 */
class OrderController extends Controller
{
	//订单列表
    public function index(Request $request)
	{
		$formData = $request->only(['page', 'status']);
		$request->validate([
			'page' => 'regex:/^\d+$/',
			'status' => 'integer'
		], [
			'page.regex' => '页码错误',
			'status.integer' => '未指定订单状态'
		]);

		if (array_key_exists('status', $formData) && $formData['status'] !== null) {
			$where['status'] = $formData['status'];
		}
		$where['user_id'] = $this->user_id;

		$list = Order::where($where)
			->with(['product' => fn($query) => $query->select('id', 'title', 'pictures')])
			->select('id', 'product_id', 'price', 'num', 'created_at')
			->orderBy('id', 'DESC')
			->simplePaginate(15);
		return $this->success($list);
	}

	public function create(Request $request)
	{
		$formData = $request->only(['id', 'name', 'mobile', 'pay_type', 'num']);
		$formData = array_map(fn($v) => trim($v), $formData); //过滤，删除首尾空

		//表单验证
		$request->validate([
			'id' => ['required', 'regex:/^\d+$/'],
			'name' => ['required', 'between:2,20'],
			'mobile' => ['required', 'regex:/^1[3-9]\d{9}$/'],
			'pay_type' => ['required', 'in:0,1,2'],
			'num' => ['required', 'min:1'],
		], [
			'id.required' => '未指定产品ID',
			'name.required' => '请输入联系人姓名',
			'mobile.required' => '请输入联系手机号',
			'id.regex' => '产品ID错误',
			'name.between' => '联系人姓名在2~20字符之间',
			'mobile.regex' => '请输入11位手机号',
			'pay_type.required' => '请选择支付方式',
			'pay_type.in' => '不存在此支付方式',
			'num.required' => '请输入购买数量',
			'num.min' => '购买数量输入错误',
		]);

		$product = AgentProduct::where('id', $formData['id'])->with('product')->first();
		if (!$product) {
			$this->error('产品不存在');
		}

		$price = $product->price; //TODO 1、成交价格还要扣除优惠券；2、产品表加库存；3、生成资金流水；4、开启事务；
		Order::create([
			'user_id' => $this->user_id,
			'order_no' => $this->getOrderNo(),
			'num' => $formData['num'],
			'price' => $price,
			'name' => $formData['name'],
			'mobile' => $formData['mobile'],
			'title' => $product->product->title,
			'agent_product_id' => $product->id,
			'product_id' => $product->product_id,
			'status' => 0,
			'pay_type' => $formData['pay_type'],
		]);
		return $this->success();
	}

	//获取应付金额
	public function getPrice(Request $request)
	{
		$id = $request->input('id');
		if (!$id || !ctype_digit($id)) {
			return $this->error('未指定ID');
		}

		$num = (float)$request->input('num');
		if (!$num || $num < 1) {
			return $this->error('未指定产品数量');
		}

		return $this->success(['price' => $this->calc($id, $num)]);
	}

	//计算价格
	private function calc($agent_id, $num)
	{
		return 2888.99; // TODO 此处需要详细计算，并扣除优惠价等之后的价格
	}

	// 生成订单号
	private function getOrderNo()
	{
		list($micro, $sec) = explode(' ', microtime());
		return date('YmdHis', $sec) . str_pad(floor($micro * 1000000), 6, 0, STR_PAD_LEFT) . mt_rand(100, 999);
	}
}