package member

import (
	"context"

	"perms-system-server/internal/svc"
	"perms-system-server/internal/types"
	"perms-system-server/internal/util"

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

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

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

func (l *MemberListLogic) MemberList(req *types.MemberListReq) (resp *types.PageResp, err error) {
	page, pageSize := util.NormalizePage(req.Page, req.PageSize)

	list, total, err := l.svcCtx.SysProductMemberModel.FindListByProductCode(l.ctx, req.ProductCode, page, pageSize)
	if err != nil {
		return nil, err
	}

	userIds := make([]int64, 0, len(list))
	for _, m := range list {
		userIds = append(userIds, m.UserId)
	}

	users, err := l.svcCtx.SysUserModel.FindByIds(l.ctx, userIds)
	if err != nil {
		return nil, err
	}
	userMap := make(map[int64]struct{ Username, Nickname string }, len(users))
	for _, u := range users {
		userMap[u.Id] = struct{ Username, Nickname string }{u.Username, u.Nickname}
	}

	items := make([]types.MemberItem, 0, len(list))
	for _, m := range list {
		var username, nickname string
		if u, ok := userMap[m.UserId]; ok {
			username = u.Username
			nickname = u.Nickname
		}

		items = append(items, types.MemberItem{
			Id:          m.Id,
			ProductCode: m.ProductCode,
			UserId:      m.UserId,
			Username:    username,
			Nickname:    nickname,
			MemberType:  m.MemberType,
			Status:      m.Status,
			CreateTime:  m.CreateTime,
		})
	}

	return &types.PageResp{
		Total: total,
		List:  items,
	}, nil
}