<?php

namespace App\Http\Controllers\Goods;

use App\Http\Controllers\Controller;
use App\Http\Resources\GoodsResource;
use App\Http\Resources\GoodsSkuResource;
use App\Models\Log as LogModel;
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 __construct(Request $request)
    {
        $this->log = new LogModel([
            'module' => 'goods',
            'action' => $request->getMethod(),
            'target_type' => 'goods_sku',
        ]);
    }

    public function index(Request $request)
    {
        $goods = Goods::query()->get(['id', 'title', 'img_url', 'type_id', 'brand_id', 'goods_code']);

        return GoodsResource::collection($goods);
    }

    public function store(Request $request)
    {
        $goodsRules = [
            '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'],
        ];

        if ($useGoods = !empty($request->goods_id)) {
            $goodsRules = [
                'goods_id' => ['required', 'integer', 'exists:goods,id'],
            ];
        }
        $skuRules = [
            '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'],
            'skus.*.cost' => ['required', 'numeric'],
        ];
        $validator = Validator::make($request->all(), array_merge($goodsRules, $skuRules));
        if ($validator->fails()) {
            $this->setValidatorFailResponse($validator->getMessageBag()->getMessages());

            return response($this->res, $this->res['httpCode']);
        }
        DB::beginTransaction();
        try {
            if ($useGoods) {
                $goods = Goods::query()->find($request->goods_id);
            } else {
                $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;
            }
            $collection = $goods->skus()->createMany($goodsSkus);
            DB::commit();
            $this->setAfterUpdate($collection->toArray());
            $this->addLog(0, 'add');
        } catch (\Exception $exception) {
            DB::rollBack();
            $this->res = [
                'httpCode' => 400,
                'errorCode' => 400416,
                'errorMessage' => $exception->getMessage(),
            ];
        }

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