package gourmet

import (
	"context"
	"go_dreamfactory/comm"
	"go_dreamfactory/lego/core"
	"go_dreamfactory/pb"
	"go_dreamfactory/utils"

	"go.mongodb.org/mongo-driver/bson"
	"go.mongodb.org/mongo-driver/mongo/options"
	"google.golang.org/protobuf/proto"
)

//参数校验
func (this *apiComp) GetRandUserCheck(session comm.IUserSession, req *pb.GourmetGetRandUserReq) (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.GourmetGetRandUserReq) (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.CrossUserOnlineList()
	if err != nil {
		code = pb.ErrorCode_DBError
		return
	}

	var szUid []string
	for _, v := range onlineList {
		if v.Uid == session.GetUserId() || v.Uid == "" { // 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 onlineList[v].Uid != "" {
				randOnlineUsers = append(randOnlineUsers, onlineList[v].Uid)
			}
		}
	} else { // 数量不足 则有多少给多少
		for _, v := range szUid {
			randOnlineUsers = append(randOnlineUsers, v)
		}
		left := int(req.People) - len(randOnlineUsers)
		if left > 0 { // 一个人也没有 那就从db 中随机取
			//tag := session.GetServiecTag()
			//if conn, err := db.ServerDBConn(tag); err == nil {
			//dbModel := db.NewDBModel(comm.TableUser, time.Hour, conn)

			if _data, err1 := this.module.modelGourmet.DB.Find(core.SqlTable(comm.TableUser), bson.M{}, options.Find().SetSort(bson.M{"lv": -1}).SetLimit(int64(left))); err1 == nil {
				for _data.Next(context.TODO()) {
					temp := &pb.DBUser{}
					if err = _data.Decode(temp); err == nil {
						randOnlineUsers = append(randOnlineUsers, temp.Uid)

					}
				}
			}
			//}
		}
	}
	for _, v := range randOnlineUsers {
		user, _ := this.module.ModuleUser.GetCrossUser(v)
		szDbUser = append(szDbUser, user) // 转成user对象
	}
	session.SendMsg(string(this.module.GetType()), GourmetGetRandUserResp, &pb.GourmetGetRandUserResp{User: szDbUser})
	return
}