MessageReactionRemove returns a 404?

[eslindsey]

I'm trying to remove a reaction as soon as it is added, so I am trying this:

func messageReactionAdd(s *discordgo.Session, m *discordgo.MessageReactionAdd) {
    err = s.MessageReactionRemove(m.ChannelID, m.MessageID, m.Emoji.ID, m.UserID)
    if err != nil {
        log.WithFields(log.Fields{"err": err}).Warning("Couldn't remove reaction from message")
    }
}

but it returns this:

WARN[Sep 14 06:20:54.821] Couldn't remove reaction from message         err="HTTP 404 Not Found, {\"message\": \"404: Not Found\", \"code\": 0}"

Is this normal behavior?

[CarsonHoffman]

(*Emoji).ID doesn’t have a valid value on Unicode emojis. See (*Emoji).APIName, which exists specifically for this use case.

[eslindsey]

In that case might I suggest changing the signature of:

func (s *Session) MessageReactionRemove(channelID, messageID, emojiID, userID string) error

to:

func (s *Session) MessageReactionRemove(channelID, messageID, emojiAPIName, userID string) error

to make things a bit easier on the uninitiated?

Thank you for the reply, by the way; changing to use .APIName() worked!