[core] Add "bits" event

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

events.go

@@ -3,6 +3,7 @@ package main
 func ptrStr(s string) *string { return &s }
 
 var (
+	eventTypeBits           = ptrStr("bits")
 	eventTypeJoin           = ptrStr("join")
 	eventTypeHost           = ptrStr("host")
 	eventTypePart           = ptrStr("part")

irc.go

@@ -3,6 +3,7 @@ package main
 import (
 	"crypto/tls"
 	"fmt"
+	"strconv"
 	"strings"
 	"sync"
 
@@ -251,6 +252,12 @@ func (i ircHandler) handleTwitchPrivmsg(m *irc.Message) {
 		return
 	}
 
+	if bits, err := strconv.ParseInt(string(m.Tags["bits"]), 10, 64); err == nil {
+		go handleMessage(i.c, m, eventTypeBits, plugins.FieldCollection{
+			"bits": bits,
+		})
+	}
+
 	go handleMessage(i.c, m, nil, nil)
 }
 

wiki/Events.md

@@ -1,5 +1,15 @@
 # Available Events
 
+## `bits`
+
+User spent bits in the channel. The full message is available like in a normal chat message, additionally the `{{ .bits }}` field is added with the total amount of bits spent.
+
+Fields:
+
+- `bits` - Total amount of bits spent in the message
+- `channel` - The channel the event occurred in
+- `username` - The login-name of the user who spent the bits
+
 ## `category_update`
 
 The current category for the channel was changed. (This event has some delay to the real category change!)