How to get to a specifec node in firebase database real-time - swift

Question

I got some messages key that was created by ChildByAutoID i am trying to access them or make the code read this keys to use this key somewhere else to get the some data from using this keys from firebase database
I tried to observe the UID of user to get keys but i can't get access to them as in code it show me the snap is the UID of user while iam trying to read nodes under the UID
in chat Controller
func sendMessage() {
let currentUserID = Auth.auth().currentUser?.uid
let databaseRef = Database.database().reference().child("messages")
let timestamp = Date.timeIntervalSinceReferenceDate
let text = typingMessageText.text as AnyObject
let receiverid = user?.userid as AnyObject
let senderid = currentUserID as AnyObject
let time = timestamp as AnyObject
let value: [String:AnyObject] = ["text": text, "receiverid": receiverid, "senderid": senderid, "timestamp": time]
let childref = databaseRef.childByAutoId()
childref.updateChildValues(value) { (error, myRef) in
print(myRef.key as Any)
let messageID = myRef.key
let mnm = [messageID : 1]
let userMessageRef = Database.database().reference().child("usersmesssages").child(currentUserID!)
userMessageRef.updateChildValues(mnm)
}
}
Observe function in tableview controller
func observeMessages(){
let currentUserID = Auth.auth().currentUser?.uid
let newDB = Database.database().reference().child("usersmesssages").child(currentUserID!)
newDB.observe(.value) { (DataSnapshot) in
let key = DataSnapshot.key
print("the Key is \(DataSnapshot)")
let dbRef = Database.database().reference().child("messages").child(key)
dbRef.observe(.childAdded, with: { (snap) in
print("thesnap is \(snap)")
if let dictinoary = snap.value as? [String: AnyObject] {
guard let receiverid = dictinoary["receiverid"] ,let senderid = dictinoary["senderid"], let text = dictinoary["text"], let time = dictinoary["timestamp"] else {
return
}
let messageValues = Message.init(text: text as? String, receiverid: receiverid as? String, senderid: senderid as? String, timestamp: time as? TimeInterval)
self.messages.append(messageValues)
dbRef.keepSynced(true)
self.ChatRoomTable.reloadData()
}
})
}
}
UPDATE
print("the data is \(DataSnapshot)")
Result from it
the data is Snap (KxTbutCjzGQmIIb2OCGHrCyLNS53) {
"-LVx10-pBVxXTN-p88pT" = 1;
"-LVx10rtB0SL0y_mn4FU" = 1;
"-LVx4XosKZhkUDPgq0TI" = 1;
"-LVx4YT3NqYi1Tj12QFj" = 1;
"-LVx4_e8_OKwUrpAR_BM" = 1;
"-LVy2TEHGZD99ALhutbX" = 1;
"-LVy2dZB_mSIicC-qcSA" = 1;
"-LVy2xkg0oTT6bLbdC4T" = 1;
"-LVy3H6a__Tm_DKnM639" = 1;
}
How to access this nodes that (= 1) it self or save it to variables to use it.