package logic

import (
	"context"

	"product/internal/dao"
	"product/internal/model"
	"product/internal/svc"
	"product/product"
	"product/validator"

	"pkg.local/log"
	"pkg.local/modelbase"
	"pkg.local/utils"
	validateService "pkg.local/validate"

	"github.com/zeromicro/go-zero/core/logx"
)

type ItemsLogic struct {
	ctx    context.Context
	svcCtx *svc.ServiceContext
	logx.Logger
}

func NewItemsLogic(ctx context.Context, svcCtx *svc.ServiceContext) *ItemsLogic {
	return &ItemsLogic{
		ctx:    ctx,
		svcCtx: svcCtx,
		Logger: logx.WithContext(ctx),
	}
}

func (l *ItemsLogic) Items(in *product.ItemsReq) (*product.Response, error) {
	var req validator.ProductItemsValidator
	if msg := validateService.ValidateFromProto(in, &req); msg != utils.StringEmpty {
		return outResponse(utils.ErrorParams, msg), nil
	}

	page := int(req.Page)
	size := int(req.PageSize)
	if page < modelbase.DefaultPage {
		page = modelbase.DefaultPage
	}
	if size < modelbase.DefaultPage {
		size = modelbase.DefaultSize
	}

	w := modelbase.Params{
		Page:  page,
		Size:  size,
		Order: "sort DESC, id DESC",
	}
	if len(req.Name) > utils.NumberZero {
		w.Like = map[string]string{
			"name LIKE ? ": "%%" + req.Name + "%%",
		}
	}

	var info []dao.ProductInfo
	result, err := model.ProductModel{}.Init().Page(w, &info)
	if err != nil {
		log.Errorf("product items: %v", err)
		return failResponse(utils.Fail), nil
	}

	items := make([]*product.Item, 0, len(info))
	for _, row := range info {
		items = append(items, toProductItem(row))
	}

	return okResponse(utils.StructToJson(&product.ItemsData{
		Count: result.Count,
		Items: items,
	})), nil
}