Variable mirroring other ones - go

Question

So I have created a simple chat bot, and I'm having trouble with one of it's commands, /resetall. It is supposed to change every users values to the values of the user "default". However, it seems that default is causing all values to change by 2.
"data": {
"user": {
"bob": {
"admin": "true",
"consecutiveCommands": "0",
"nickname": "",
"sentMessages": "2"
},
"default": {
"admin": "true",
"consecutiveCommands": "0",
"nickname": "",
"sentMessages": "2"
},
"me": {
"admin": "true",
"consecutiveCommands": "0",
"nickname": "",
"sentMessages": "2"
},
"total": {
"admin": "true",
"consecutiveCommands": "0",
"nickname": "",
"sentMessages": "2"
}
},
"chat": {
"commandSender": "me",
"lastImage": "",
"lastMessage": "/pong",
"lastSender": "me",
"lastTimestamp": "11:59",
"wasCommand": "true"
}
}
and my go code:
// each incoming message
type Message struct {
Message string
From string
Chat string
Timestamp string
IsCommand bool
}
//adds one to a string
func addOne(s string) string {
i, _ := strconv.Atoi(s)
return strconv.Itoa(i + 1)
}
//counts messages sent
func messageCounter(data map[string]Chat, event *Message) map[string]Chat {
//counts messages sent by user
data[event.Chat].Data.User[event.From]["sentMessages"] = addOne(data[event.Chat].Data.User[event.From]["sentMessages"])
data[event.Chat].Data.User["total"]["sentMessages"] = addOne(data[event.Chat].Data.User["total"]["sentMessages"])
return data
}
//sets variables for future use / other functions
func eventRecorder(data map[string]Chat, event *Message) map[string]Chat {
if !event.IsCommand {
data[event.Chat].Data.Chat["lastMessage"] = event.Message
data[event.Chat].Data.Chat["lastSender"] = event.From
data[event.Chat].Data.Chat["lastTimestamp"] = event.Timestamp
data[event.Chat].Data.Chat["wasCommand"] = "false"
} else {
data[event.Chat].Data.Chat["wasCommand"] = "true"
data[event.Chat].Data.Chat["commandSender"] = event.From
}
return data
}
//supposed to set all users data to the default user
func resetall(event *Message, data map[string]Chat) (error, map[string]Chat) {
default_user := data[event.Chat].Data.User["default"]
if data[event.Chat].Data.User[event.From]["admin"] == "true" {
for user, _ := range data[event.Chat].Data.User {
if user != "default" {
data[event.Chat].Data.User[user] = default_user
print(user + "\n")
}
}
return nil, data
}
return errors.New("don't have permission")), data
}
func main() {
processingFuncs := []func(map[string]Chat, *Message) map[string]Chat{
messageCounter,
eventRecorder,
}
data, _ := readsettings() //reads the data from a json file
event := &Message{"/resetall", "me", "chat123", "11:59", false}
if strings.Split(event.Message, " ")[0] == "/resetall" {
event.IsCommand = true
_, data = resetall(event, data)
fmt.Println("success")
}
for _, processingFunc := range processingFuncs {
processingFunc(data, event)
}
writesettings(data) //writes the data to a json file
}
So if I set everyone's message counter to 0 and run it, it sets every single user's message counter to 2 (including default). Each time I run it, the value increases by 2. Can anyone help explain why this is happening

Answer 1

this line to copy the user
data[event.Chat].Data.User[user] = default_user
made a reference to it, I don't know why I didn't spot it earlier. I replaced it with this code
for k, v := range data[event.Chat].Data.User["default"] {
data[event.Chat].Data.User[user][k] = v
}
and it worked perfectly.