Add a separate dispatcher for PRIVMSG

We're going to use that one a lot more than the others…

bot/dispatcher.go

@@ -2,6 +2,7 @@ package bot
 
 import (
 	"log"
+	"strings"
 
 	"github.com/arachnist/gorepost/irc"
 )
@@ -16,11 +17,27 @@ func RemoveCallback(command string) {
 	delete(Callbacks, command)
 }
 
+var MSGCallbacks = make(map[string]func(chan irc.Message, irc.Message))
+
+func AddMSGCallback(command string, callback func(chan irc.Message, irc.Message)) {
+	MSGCallbacks[command] = callback
+}
+
+func RemoveMSGCallback(command string) {
+	delete(MSGCallbacks, command)
+}
+
 func Dispatcher(quit chan struct{}, output chan irc.Message, input chan irc.Message) {
 	log.Println("spawned Dispatcher")
 	for {
 		select {
 		case msg := <-input:
+			if msg.Command == "PRIVMSG" {
+				cmd := strings.Split(msg.Trailing, " ")[0]
+				if MSGCallbacks[cmd] != nil {
+					go MSGCallbacks[cmd](output, msg)
+				}
+			}
 			if Callbacks[msg.Command] != nil {
 				go Callbacks[msg.Command](output, msg)
 			}

bot/msgping.go

@@ -0,0 +1,17 @@
+package bot
+
+import (
+	"github.com/arachnist/gorepost/irc"
+)
+
+func papiez(output chan irc.Message, msg irc.Message) {
+	output <- irc.Message{
+		Command:  "PRIVMSG",
+		Params:   []string{msg.Prefix.Name},
+		Trailing: "pingity pong",
+	}
+}
+
+func init() {
+	AddMSGCallback(":ping", papiez)
+}