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path: root/main.go
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package main

import (
	"flag"
	"log"

	irc "github.com/fluffle/goirc/client"
)

const maxLen = 500

func notify(conn *irc.Conn, target string) chan string {
	c := make(chan string)
	go func() {
		for msg := range c {
			log.Println("send", msg)
			if len(msg) > maxLen {
				msg = msg[:maxLen] + "..."
			}
			conn.Notice(target, msg)
		}
	}()
	return c
}

func kicker(conn *irc.Conn, channel string) chan string {
	c := make(chan string)
	go func() {
		for nick := range c {
			if nick != conn.Me().Nick {
				log.Println("kick", nick)
				conn.Kick(channel, nick)
			}
		}
	}()
	return c
}

func join(room string) irc.HandlerFunc {
	return func(conn *irc.Conn, _ *irc.Line) {
		conn.Join(room)
	}
}

func discon(c chan struct{}) irc.HandlerFunc {
	return func(_ *irc.Conn, _ *irc.Line) {
		close(c)
	}
}

func privmsg(n, k chan string, room string) irc.HandlerFunc {
	l := links(n)
	return func(conn *irc.Conn, line *irc.Line) {
		t := line.Text()
		l <- t
		if isFlood(t) {
			k <- line.Nick
		}
	}
}

func main() {
	node := flag.String("node", "irc.freenode.org:6667", "IRC Server")
	room := flag.String("room", "#lor", "IRC Channel")
	name := flag.String("name", "dim13", "Bots Name")
	flag.Parse()

	c := irc.SimpleClient(*name)
	//c.EnableStateTracking() // XXX
	done := make(chan struct{})
	n := notify(c, *room)
	k := kicker(c, *room)
	go Watch(n, Feeds) // TODO shall it be there?

	// setup event handler
	handler := []struct {
		ev string
		f  irc.HandlerFunc
	}{
		{irc.DISCONNECTED, discon(done)},
		{irc.CONNECTED, join(*room)},
		{irc.KICK, join(*room)},
		{irc.PRIVMSG, privmsg(n, k, *room)},
	}
	for _, h := range handler {
		c.HandleFunc(h.ev, h.f)
	}

	log.Println("Connect to", *node)
	if err := c.ConnectTo(*node); err != nil {
		log.Fatal(err)
	}

	<-done
	log.Println("Disconnected")
}