<?php

namespace App\Http\Controllers\Goods;

use App\Http\Controllers\Controller;
use App\Http\Resources\GoodsResource;
use App\Http\Resources\GoodsSkuResource;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Validator;
use Illuminate\Validation\Rule;
use App\Models\Goods;
use App\Models\GoodsSku;

class GoodsController extends Controller
{
    public function index(Request $request)
    {
        $goods = GoodsSku::query()
            ->with(['goods' => function($query) {

            }])
            ->paginate();

        return GoodsSkuResource::collection($goods);
    }

    public function store(Request $request)
    {
        $validator = Validator::make($request->all(), [
            'title' => ['required', 'string', 'max:255'],
            'img_url' => ['required', 'string', 'max:255'],
            'type_id' => ['required', 'integer', 'exists:goods_types,id'],
            'brand_id' => ['integer', 'exists:goods_brands,id'],
            'goods_code' => ['required', 'alpha_dash', 'max:32', 'unique:goods,goods_code'],
            'skus' => ['required', 'array'],
            'skus.*.title' => ['required', 'string', 'max:255'],
            'skus.*.sku_code' => ['required', 'distinct', 'alpha_dash', 'max:32'],
            'skus.*.status' => ['required', 'integer', Rule::in([0, 1, 2])],
            'skus.*.num' => ['required', 'integer', 'max:10'],
            'skus.*.cost' => ['required', 'numeric', 'max:10'],
        ]);
        if ($validator->fails()) {
            $this->res = [
                'httpCode' => 400,
                'errorCode' => 400416,
                'errorMessage' => $validator->getMessageBag()->getMessages(),
            ];
            goto end;
        }
        DB::beginTransaction();
        try {
            $goods = new Goods();
            $goods->title = $request->title;
            $goods->img_url = $request->img_url;
            $goods->type_id = $request->type_id;
            $goods->brand_id = $request->brand_id;
            $goods->goods_code = $request->goods_code;
            $goods->save();
            $goodsSkus = [];
            foreach ($request->skus as $item) {
                $item['goods_id'] = $goods->id;
                $goodsSkus[] = $item;
            }
            $goods->skus()->createMany($goodsSkus);
            DB::commit();
        } catch (\Exception $exception) {
            DB::rollBack();
            $this->res = [
                'httpCode' => 400,
                'errorCode' => 400416,
                'errorMessage' => $exception->getMessage(),
            ];
        }
        end:

        return response($this->res, $this->res['httpCode']);
    }
}