package logic

import (
	"context"
	"strconv"

	"lone-services/pkg/modelbase"
	"lone-services/pkg/utils"
	"lone-services/pkg/validate"
	sale "lone-services/rpc/sale/pb"
	"lone-services/services/sale/internal/dao"
	"lone-services/services/sale/internal/model"
	"lone-services/services/sale/internal/svc"
	"lone-services/services/sale/validator"

	"github.com/zeromicro/go-zero/core/logx"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/status"
)

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

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

func (l *NamesByIdsLogic) NamesByIds(in *sale.NamesByIdsReq) (*sale.NamesByIdsData, error) {
	var req validator.NamesByIdsValidator
	if msg := validate.ValidateFromProto(in, &req); msg != utils.StringEmpty {
		return nil, status.Error(codes.InvalidArgument, msg)
	}
	if len(req.Ids) < utils.NumberOne {
		return &sale.NamesByIdsData{Items: []*sale.NamesByIdsItem{}}, nil
	}

	seen := make(map[int64]struct{}, len(req.Ids))
	ids := make([]string, 0, len(req.Ids))
	for _, id := range req.Ids {
		if id < utils.NumberOne {
			continue
		}
		if _, ok := seen[id]; ok {
			continue
		}
		seen[id] = struct{}{}
		ids = append(ids, strconv.FormatInt(id, utils.NumberTen))
	}
	if len(ids) < utils.NumberOne {
		return &sale.NamesByIdsData{Items: []*sale.NamesByIdsItem{}}, nil
	}

	var rows []dao.SaleNameItem
	if err := (model.SaleModel{}.Init().Items(modelbase.Params{
		In: map[string][]string{"id in ?": ids},
	}, &rows)); err != nil {
		l.Errorf("sale NamesByIds: %v", err)
		return nil, status.Error(codes.Internal, utils.Fail.Msg)
	}

	items := make([]*sale.NamesByIdsItem, 0, len(rows))
	for _, row := range rows {
		items = append(items, &sale.NamesByIdsItem{
			Id:   row.Id,
			Name: row.Name,
		})
	}
	return &sale.NamesByIdsData{Items: items}, nil
}