Make join events available to handlers

Signed-off-by: Knut Ahlers <knut@ahlers.me>

events.go

@@ -3,6 +3,7 @@ package main
 func ptrStr(s string) *string { return &s }
 
 var (
+	eventTypeJoin   = ptrStr("join")
 	eventTypeHost   = ptrStr("host")
 	eventTypePermit = ptrStr("permit")
 	eventTypeRaid   = ptrStr("raid")

irc.go

@@ -79,6 +79,12 @@ func (i ircHandler) Handle(c *irc.Client, m *irc.Message) {
 		})
 		i.ExecuteJoins(config.Channels)
 
+	case "JOIN":
+		// JOIN (Default IRC Command)
+		// User enters the channel, might be triggered multiple times
+		// should not be used to greet users
+		i.handleJoin(m)
+
 	case "NOTICE":
 		// NOTICE (Twitch Commands)
 		// General notices from the server.
@@ -110,6 +116,10 @@ func (i ircHandler) Handle(c *irc.Client, m *irc.Message) {
 
 func (i ircHandler) Run() error { return errors.Wrap(i.c.Run(), "running IRC client") }
 
+func (i ircHandler) handleJoin(m *irc.Message) {
+	go handleMessage(i.c, m, eventTypeJoin)
+}
+
 func (i ircHandler) handlePermit(m *irc.Message) {
 	badges := i.ParseBadgeLevels(m)
 	if !badges.Has(badgeBroadcaster) && (!config.PermitAllowModerator || !badges.Has(badgeModerator)) {