package logic

import (
	"context"
	"strconv"

	"lone-services/pkg/modelbase"
	"lone-services/pkg/utils"
	chore "lone-services/rpc/chore/pb"
	"lone-services/services/chore/internal/dao"
	"lone-services/services/chore/internal/model"
	"lone-services/services/chore/internal/svc"

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

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

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

// 服务间调用：按 id 批量查地区名称
func (l *RegionsByIdsLogic) RegionsByIds(in *chore.RegionsByIdsReq) (*chore.RegionsByIdsData, error) {
	if len(in.GetIds()) < utils.NumberOne {
		return nil, status.Error(codes.InvalidArgument, utils.ErrorParams.Msg)
	}

	seen := make(map[int64]struct{}, len(in.GetIds()))
	ids := make([]string, 0, len(in.GetIds()))
	for _, id := range in.GetIds() {
		if id < utils.NumberOne {
			continue
		}
		if _, ok := seen[id]; ok {
			continue
		}
		seen[id] = struct{}{}
		ids = append(ids, strconv.FormatInt(id, 10))
	}
	if len(ids) < utils.NumberOne {
		return nil, status.Error(codes.InvalidArgument, utils.ErrorParams.Msg)
	}

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

	items := make([]*chore.RegionItem, 0, len(list))
	for _, row := range list {
		items = append(items, &chore.RegionItem{
			Id:   int64(row.Id),
			Name: row.Name,
		})
	}
	return &chore.RegionsByIdsData{Items: items}, nil
}