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package bridge
import (
//"fmt"
"github.com/42wim/matterbridge/bridge/config"
"github.com/42wim/matterbridge/bridge/gitter"
"github.com/42wim/matterbridge/bridge/irc"
"github.com/42wim/matterbridge/bridge/mattermost"
"github.com/42wim/matterbridge/bridge/xmpp"
log "github.com/Sirupsen/logrus"
"strings"
)
type Bridge struct {
*config.Config
Source string
Bridges []Bridger
Channels []map[string]string
ignoreNicks map[string][]string
}
type Bridger interface {
Send(msg config.Message) error
Name() string
Connect() error
//Command(cmd string) string
}
func NewBridge(cfg *config.Config) error {
c := make(chan config.Message)
b := &Bridge{}
b.Config = cfg
if cfg.IRC.Enable {
b.Bridges = append(b.Bridges, birc.New(cfg, c))
}
if cfg.Mattermost.Enable {
b.Bridges = append(b.Bridges, bmattermost.New(cfg, c))
}
if cfg.Xmpp.Enable {
b.Bridges = append(b.Bridges, bxmpp.New(cfg, c))
}
if cfg.Gitter.Enable {
b.Bridges = append(b.Bridges, bgitter.New(cfg, c))
}
if len(b.Bridges) < 2 {
log.Fatalf("only %d sections enabled. Need at least 2 sections enabled (eg [IRC] and [mattermost]", len(b.Bridges))
}
for _, br := range b.Bridges {
br.Connect()
}
b.mapChannels()
b.mapIgnores()
b.handleReceive(c)
return nil
}
func (b *Bridge) handleReceive(c chan config.Message) {
for {
select {
case msg := <-c:
for _, br := range b.Bridges {
b.handleMessage(msg, br)
}
}
}
}
func (b *Bridge) mapChannels() error {
for _, val := range b.Config.Channel {
m := make(map[string]string)
m["irc"] = val.IRC
m["mattermost"] = val.Mattermost
m["xmpp"] = val.Xmpp
m["gitter"] = val.Gitter
b.Channels = append(b.Channels, m)
}
return nil
}
func (b *Bridge) mapIgnores() {
m := make(map[string][]string)
m["irc"] = strings.Fields(b.Config.IRC.IgnoreNicks)
m["mattermost"] = strings.Fields(b.Config.Mattermost.IgnoreNicks)
m["xmpp"] = strings.Fields(b.Config.Xmpp.IgnoreNicks)
m["gitter"] = strings.Fields(b.Config.Gitter.IgnoreNicks)
b.ignoreNicks = m
}
func (b *Bridge) getDestChannel(msg *config.Message, dest string) string {
for _, v := range b.Channels {
if v[msg.Origin] == msg.Channel {
return v[dest]
}
}
return ""
}
func (b *Bridge) handleMessage(msg config.Message, dest Bridger) {
if b.ignoreMessage(&msg) {
return
}
if dest.Name() != msg.Origin {
msg.Channel = b.getDestChannel(&msg, dest.Name())
if msg.Channel == "" {
return
}
b.modifyMessage(&msg, dest.Name())
dest.Send(msg)
}
}
func (b *Bridge) ignoreMessage(msg *config.Message) bool {
// should we discard messages ?
for _, entry := range b.ignoreNicks[msg.Origin] {
if msg.Username == entry {
return true
}
}
return false
}
func setNickFormat(msg *config.Message, format string) {
if format == "" {
msg.Username = msg.Origin + "-" + msg.Username + ": "
return
}
msg.Username = strings.Replace(format, "{NICK}", msg.Username, -1)
msg.Username = strings.Replace(msg.Username, "{BRIDGE}", msg.Origin, -1)
}
func (b *Bridge) modifyMessage(msg *config.Message, dest string) {
switch dest {
case "irc":
setNickFormat(msg, b.Config.IRC.RemoteNickFormat)
case "gitter":
setNickFormat(msg, b.Config.Gitter.RemoteNickFormat)
case "xmpp":
setNickFormat(msg, b.Config.Xmpp.RemoteNickFormat)
case "mattermost":
setNickFormat(msg, b.Config.Mattermost.RemoteNickFormat)
}
}
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