package smithy

import (
	"go_dreamfactory/comm"
	"go_dreamfactory/pb"
	"go_dreamfactory/utils"

	"google.golang.org/protobuf/proto"
)

//参数校验
func (this *apiComp) GetRandUserCheck(session comm.IUserSession, req *pb.SmithyGetRandUserReq) (code pb.ErrorCode) {
	if req.People <= 0 {
		code = pb.ErrorCode_ReqParameterError
		return
	}
	return
}

/// 获取一些玩家数据
func (this *apiComp) GetRandUser(session comm.IUserSession, req *pb.SmithyGetRandUserReq) (code pb.ErrorCode, data proto.Message) {
	var (
		szDbUser        []*pb.DBUser
		randOnlineUsers []string
	)
	code = this.GetRandUserCheck(session, req)
	if code != pb.ErrorCode_Success {
		return // 参数校验失败直接返回
	}
	// 获取在线玩家信息
	onlineList, err := this.module.ModuleUser.UserOnlineList()
	if err != nil {
		code = pb.ErrorCode_DBError
		return
	}

	var szUid []string
	for _, v := range onlineList {
		if v.Uid == session.GetUserId() { // 过滤自己信息
			continue
		}

		szUid = append(szUid, v.Uid)
	}
	// 随机在线玩家信息
	if len(onlineList) > int(req.People) {
		randArr := utils.Numbers(0, len(onlineList), int(req.People))
		for _, v := range randArr {
			if szUid[v] != "" {
				randOnlineUsers = append(randOnlineUsers, szUid[v])
			}
		}
	} else { // 数量不足 则有多少给多少
		for _, v := range szUid {
			randOnlineUsers = append(randOnlineUsers, v)
		}
	}
	for _, v := range randOnlineUsers {
		szDbUser = append(szDbUser, this.module.ModuleUser.GetUser(v)) // 转成user对象
	}
	session.SendMsg(string(this.module.GetType()), SmithyGetRandUserResp, &pb.SmithyGetRandUserResp{User: szDbUser})
	return
}