package ads

import (
	"context"

	"bsm/full/module/ec/mall/internal/impl"
	"bsm/full/module/ec/mall/internal/models"
	pb "bsm/full/module/ec/mall/pb"
	"git.apinb.com/bsm-sdk/core/errcode"
	"git.apinb.com/bsm-sdk/core/printer"
)

// 广告列表
func Fetch(ctx context.Context, in *pb.FetchRequest) (reply *pb.AdsListReply, err error) {
	if in.GetStoreIdentity() == "" {
		return nil, errcode.ErrInvalidArgument
	}

	var (
		cnt      int64 = 0
		pageNo   int64 = in.GetPageNo()
		pageSize int64 = in.GetPageSize()
		offset   int64 = (pageNo - 1) * pageSize
		params         = map[string]string{
			"store_identity": in.GetStoreIdentity(),
		}
	)

	// vlidate request page_no,page_size.
	if pageNo < 1 {
		pageNo = 1
		offset = 0
	}
	if pageSize < 50 {
		pageSize = 50
		offset = (pageNo - 1) * pageSize
	}

	var data []*models.MallAds
	if err := impl.DBService.Model(&models.MallAds{}).Where(params).Order("created_at desc").Count(&cnt).Offset(int(offset)).
		Limit(int(pageSize)).Find(&data).Error; err != nil {
		printer.Error(err.Error())
		return nil, errcode.ErrDB
	}

	return &pb.AdsListReply{
		Count: cnt,
		Data:  ref(data),
	}, nil
}