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Merge pull request #12 from chrissexton/slack 

Slack integration
This commit is contained in:
Chris Sexton 2016-03-11 11:27:21 -05:00
parent 74e981eedf bafb87c0bb
commit c379087c7e
9 changed files with 623 additions and 321 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

88
bot/bot.go
View File

@ -11,15 +11,10 @@ import (
"time"
"github.com/velour/catbase/config"
"github.com/velour/velour/irc"
_ "github.com/mattn/go-sqlite3"
)
const actionPrefix = "\x01ACTION"
var throttle <-chan time.Time
// Bot type provides storage for bot-wide information, configs, and database connections
type Bot struct {
// Each plugin must be registered in our plugins handler. To come: a map so that this
@ -32,11 +27,10 @@ type Bot struct {
// Represents the bot
Me User
// Conn allows us to send messages and modify our connection state
Client *irc.Client
Config *config.Config
Conn Connector
// SQL DB
// TODO: I think it'd be nice to use https://github.com/jmoiron/sqlx so that
// the select/update/etc statements could be simplified with struct
@ -103,8 +97,8 @@ type Variable struct {
}
// NewBot creates a Bot for a given connection and set of handlers.
func NewBot(config *config.Config, c *irc.Client) *Bot {
sqlDB, err := sql.Open("sqlite3", config.DbFile)
func NewBot(config *config.Config, connector Connector) *Bot {
sqlDB, err := sql.Open("sqlite3", config.DB.File)
if err != nil {
log.Fatal(err)
}
@ -124,9 +118,9 @@ func NewBot(config *config.Config, c *irc.Client) *Bot {
Config: config,
Plugins: make(map[string]Handler),
PluginOrdering: make([]string, 0),
Conn: connector,
Users: users,
Me: users[0],
Client: c,
DB: sqlDB,
logIn: logIn,
logOut: logOut,
@ -142,6 +136,9 @@ func NewBot(config *config.Config, c *irc.Client) *Bot {
}
go http.ListenAndServe(config.HttpAddr, nil)
connector.RegisterMessageReceived(bot.MsgReceived)
connector.RegisterEventReceived(bot.EventReceived)
return bot
}
@ -197,45 +194,6 @@ func (b *Bot) AddHandler(name string, h Handler) {
}
}
func (b *Bot) SendMessage(channel, message string) {
if !strings.HasPrefix(message, actionPrefix) {
b.selfSaid(channel, message, false)
}
for len(message) > 0 {
m := irc.Msg{
Cmd: "PRIVMSG",
Args: []string{channel, message},
}
_, err := m.RawString()
if err != nil {
mtl := err.(irc.MsgTooLong)
m.Args[1] = message[:mtl.NTrunc]
message = message[mtl.NTrunc:]
} else {
message = ""
}
if throttle == nil {
ratePerSec := b.Config.RatePerSec
throttle = time.Tick(time.Second / time.Duration(ratePerSec))
}
<-throttle
b.Client.Out <- m
}
}
// Sends action to channel
func (b *Bot) SendAction(channel, message string) {
// Notify plugins that we've said something
b.selfSaid(channel, message, true)
message = actionPrefix + " " + message + "\x01"
b.SendMessage(channel, message)
}
func (b *Bot) Who(channel string) []User {
out := []User{}
for _, u := range b.Users {
@ -285,3 +243,33 @@ func (b *Bot) serveRoot(w http.ResponseWriter, r *http.Request) {
}
t.Execute(w, context)
}
// Checks if message is a command and returns its curtailed version
func IsCmd(c *config.Config, message string) (bool, string) {
cmdc := c.CommandChar
botnick := strings.ToLower(c.Nick)
iscmd := false
lowerMessage := strings.ToLower(message)
if strings.HasPrefix(lowerMessage, cmdc) && len(cmdc) > 0 {
iscmd = true
message = message[len(cmdc):]
// } else if match, _ := regexp.MatchString(rex, lowerMessage); match {
} else if strings.HasPrefix(lowerMessage, botnick) &&
len(lowerMessage) > len(botnick) &&
(lowerMessage[len(botnick)] == ',' || lowerMessage[len(botnick)] == ':') {
iscmd = true
message = message[len(botnick):]
// trim off the customary addressing punctuation
if message[0] == ':' || message[0] == ',' {
message = message[1:]
}
}
// trim off any whitespace left on the message
message = strings.TrimSpace(message)
return iscmd, message
}

111
bot/handlers.go
View File

@ -12,18 +12,14 @@ import (
"strconv"
"strings"
"time"
"github.com/velour/velour/irc"
)
// Handles incomming PRIVMSG requests
func (b *Bot) MsgRecieved(client *irc.Client, inMsg irc.Msg) {
log.Println("Recieved message: ", inMsg)
if inMsg.User == "" {
return
}
func (b *Bot) MsgReceived(msg Message) {
log.Println("Received message: ", msg)
msg := b.buildMessage(client, inMsg)
// msg := b.buildMessage(client, inMsg)
// do need to look up user and fix it
if strings.HasPrefix(msg.Body, "help") && msg.Command {
parts := strings.Fields(strings.ToLower(msg.Body))
@ -44,27 +40,23 @@ RET:
}
// Handle incoming events
func (b *Bot) EventRecieved(conn *irc.Client, inMsg irc.Msg) {
log.Println("Recieved event: ", inMsg)
if inMsg.User == "" {
return
}
msg := b.buildMessage(conn, inMsg)
func (b *Bot) EventReceived(msg Message) {
log.Println("Received event: ", msg)
//msg := b.buildMessage(conn, inMsg)
for _, name := range b.PluginOrdering {
p := b.Plugins[name]
if p.Event(inMsg.Cmd, msg) {
if p.Event(msg.Body, msg) { // TODO: could get rid of msg.Body
break
}
}
}
// Interface used for compatibility with the Plugin interface
type Handler interface {
Message(message Message) bool
Event(kind string, message Message) bool
BotMessage(message Message) bool
Help(channel string, parts []string)
RegisterWeb() *string
func (b *Bot) SendMessage(channel, message string) {
b.Conn.SendMessage(channel, message)
}
func (b *Bot) SendAction(channel, message string) {
b.Conn.SendAction(channel, message)
}
// Checks to see if the user is asking for help, returns true if so and handles the situation.
@ -96,79 +88,6 @@ func (b *Bot) checkHelp(channel string, parts []string) {
}
}
// Checks if message is a command and returns its curtailed version
func (b *Bot) isCmd(message string) (bool, string) {
cmdc := b.Config.CommandChar
botnick := strings.ToLower(b.Config.Nick)
iscmd := false
lowerMessage := strings.ToLower(message)
if strings.HasPrefix(lowerMessage, cmdc) && len(cmdc) > 0 {
iscmd = true
message = message[len(cmdc):]
// } else if match, _ := regexp.MatchString(rex, lowerMessage); match {
} else if strings.HasPrefix(lowerMessage, botnick) &&
len(lowerMessage) > len(botnick) &&
(lowerMessage[len(botnick)] == ',' || lowerMessage[len(botnick)] == ':') {
iscmd = true
message = message[len(botnick):]
// trim off the customary addressing punctuation
if message[0] == ':' || message[0] == ',' {
message = message[1:]
}
}
// trim off any whitespace left on the message
message = strings.TrimSpace(message)
return iscmd, message
}
// Builds our internal message type out of a Conn & Line from irc
func (b *Bot) buildMessage(conn *irc.Client, inMsg irc.Msg) Message {
// Check for the user
user := b.GetUser(inMsg.Origin)
channel := inMsg.Args[0]
if channel == b.Config.Nick {
channel = inMsg.Args[0]
}
isAction := false
var message string
if len(inMsg.Args) > 1 {
message = inMsg.Args[1]
isAction = strings.HasPrefix(message, actionPrefix)
if isAction {
message = strings.TrimRight(message[len(actionPrefix):], "\x01")
message = strings.TrimSpace(message)
}
}
iscmd := false
filteredMessage := message
if !isAction {
iscmd, filteredMessage = b.isCmd(message)
}
msg := Message{
User: user,
Channel: channel,
Body: filteredMessage,
Raw: message,
Command: iscmd,
Action: isAction,
Time: time.Now(),
Host: inMsg.Host,
}
return msg
}
func (b *Bot) LastMessage(channel string) (Message, error) {
log := <-b.logOut
if len(log) == 0 {
@ -238,7 +157,7 @@ func (b *Bot) Filter(message Message, input string) string {
func (b *Bot) getVar(varName string) (string, error) {
var text string
err := b.DB.QueryRow("select v.value from variables as va inner join values as v on va.id = va.id = v.varId order by random() limit 1").Scan(&text)
err := b.DB.QueryRow(`select v.value from variables as va inner join "values" as v on va.id = va.id = v.varId order by random() limit 1`).Scan(&text)
switch {
case err == sql.ErrNoRows:
return "", fmt.Errorf("No factoid found")

19
bot/interfaces.go Normal file
View File

@ -0,0 +1,19 @@
package bot
type Connector interface {
RegisterEventReceived(func(message Message))
RegisterMessageReceived(func(message Message))
SendMessage(channel, message string)
SendAction(channel, message string)
Serve()
}
// Interface used for compatibility with the Plugin interface
type Handler interface {
Message(message Message) bool
Event(kind string, message Message) bool
BotMessage(message Message) bool
Help(channel string, parts []string)
RegisterWeb() *string
}

21
config/config.go
View File

@ -9,13 +9,22 @@ import "io/ioutil"
// Config stores any system-wide startup information that cannot be easily configured via
// the database
type Config struct {
DbFile string
DbName string
DbServer string
DB struct {
File string
Name string
Server string
}
Channels []string
MainChannel string
Plugins []string
Nick, Server, Pass string
Type string
Irc struct {
Server, Pass string
}
Slack struct {
Token string
}
Nick string
FullName string
Version string
CommandChar string
@ -58,6 +67,10 @@ func Readconfig(version, cfile string) *Config {
}
c.Version = version
if c.Type == "" {
c.Type = "irc"
}
fmt.Printf("godeepintir version %s running.\n", c.Version)
return &c

16
example_config.json
View File

@ -1,12 +1,20 @@
{
"DFile": "catbase.db",
"Dbserver": "127.0.0.1",
"DB": {
"File": "catbase.db",
"Server": "127.0.0.1"
},
"Channels": ["#CatBaseTest"],
"MainChannel": "#CatBaseTest",
"Plugins": [],
"Server": "127.0.0.1:6666",
"Type": "slack",
"Irc": {
"Server": "ircserver:6697",
"Pass": "CatBaseTest:test"
},
"Slack": {
"Token": "<your slack token>"
},
"Nick": "CatBaseTest",
"Pass": "CatBaseTest:test",
"FullName": "CatBase",
"CommandChar": "!",
"RatePerSec": 10.0,

272
irc/irc.go Normal file
View File

@ -0,0 +1,272 @@
package irc
import (
"io"
"log"
"os"
"strings"
"time"
"github.com/velour/catbase/bot"
"github.com/velour/catbase/config"
"github.com/velour/velour/irc"
)
const (
// DefaultPort is the port used to connect to
// the server if one is not specified.
defaultPort = "6667"
// InitialTimeout is the initial amount of time
// to delay before reconnecting. Each failed
// reconnection doubles the timout until
// a connection is made successfully.
initialTimeout = 2 * time.Second
// PingTime is the amount of inactive time
// to wait before sending a ping to the server.
pingTime = 120 * time.Second
actionPrefix = "\x01ACTION"
)
var throttle <-chan time.Time
type Irc struct {
Client *irc.Client
config *config.Config
quit chan bool
eventReceived func(bot.Message)
messageReceived func(bot.Message)
}
func New(c *config.Config) *Irc {
i := Irc{}
i.config = c
return &i
}
func (i *Irc) RegisterEventReceived(f func(bot.Message)) {
i.eventReceived = f
}
func (i *Irc) RegisterMessageReceived(f func(bot.Message)) {
i.messageReceived = f
}
func (i *Irc) JoinChannel(channel string) {
log.Printf("Joining channel: %s", channel)
i.Client.Out <- irc.Msg{Cmd: irc.JOIN, Args: []string{channel}}
}
func (i *Irc) SendMessage(channel, message string) {
for len(message) > 0 {
m := irc.Msg{
Cmd: "PRIVMSG",
Args: []string{channel, message},
}
_, err := m.RawString()
if err != nil {
mtl := err.(irc.MsgTooLong)
m.Args[1] = message[:mtl.NTrunc]
message = message[mtl.NTrunc:]
} else {
message = ""
}
if throttle == nil {
ratePerSec := i.config.RatePerSec
throttle = time.Tick(time.Second / time.Duration(ratePerSec))
}
<-throttle
i.Client.Out <- m
}
}
// Sends action to channel
func (i *Irc) SendAction(channel, message string) {
message = actionPrefix + " " + message + "\x01"
i.SendMessage(channel, message)
}
func (i *Irc) Serve() {
if i.eventReceived == nil || i.messageReceived == nil {
log.Fatal("Missing an event handler")
}
var err error
i.Client, err = irc.DialSSL(
i.config.Irc.Server,
i.config.Nick,
i.config.FullName,
i.config.Irc.Pass,
true,
)
if err != nil {
log.Fatal(err)
}
for _, c := range i.config.Channels {
i.JoinChannel(c)
}
i.quit = make(chan bool)
go i.handleConnection()
<-i.quit
}
func (i *Irc) handleConnection() {
t := time.NewTimer(pingTime)
defer func() {
t.Stop()
close(i.Client.Out)
for err := range i.Client.Errors {
if err != io.EOF {
log.Println(err)
}
}
}()
for {
select {
case msg, ok := <-i.Client.In:
if !ok { // disconnect
i.quit <- true
return
}
t.Stop()
t = time.NewTimer(pingTime)
i.handleMsg(msg)
case <-t.C:
i.Client.Out <- irc.Msg{Cmd: irc.PING, Args: []string{i.Client.Server}}
t = time.NewTimer(pingTime)
case err, ok := <-i.Client.Errors:
if ok && err != io.EOF {
log.Println(err)
i.quit <- true
return
}
}
}
}
// HandleMsg handles IRC messages from the server.
func (i *Irc) handleMsg(msg irc.Msg) {
botMsg := i.buildMessage(msg)
switch msg.Cmd {
case irc.ERROR:
log.Println(1, "Received error: "+msg.Raw)
case irc.PING:
i.Client.Out <- irc.Msg{Cmd: irc.PONG}
case irc.PONG:
// OK, ignore
case irc.ERR_NOSUCHNICK:
i.eventReceived(botMsg)
case irc.ERR_NOSUCHCHANNEL:
i.eventReceived(botMsg)
case irc.RPL_MOTD:
i.eventReceived(botMsg)
case irc.RPL_NAMREPLY:
i.eventReceived(botMsg)
case irc.RPL_TOPIC:
i.eventReceived(botMsg)
case irc.KICK:
i.eventReceived(botMsg)
case irc.TOPIC:
i.eventReceived(botMsg)
case irc.MODE:
i.eventReceived(botMsg)
case irc.JOIN:
i.eventReceived(botMsg)
case irc.PART:
i.eventReceived(botMsg)
case irc.QUIT:
os.Exit(1)
case irc.NOTICE:
i.eventReceived(botMsg)
case irc.PRIVMSG:
i.messageReceived(botMsg)
case irc.NICK:
i.eventReceived(botMsg)
case irc.RPL_WHOREPLY:
i.eventReceived(botMsg)
case irc.RPL_ENDOFWHO:
i.eventReceived(botMsg)
default:
cmd := irc.CmdNames[msg.Cmd]
log.Println("(" + cmd + ") " + msg.Raw)
}
}
// Builds our internal message type out of a Conn & Line from irc
func (i *Irc) buildMessage(inMsg irc.Msg) bot.Message {
// Check for the user
user := bot.User{
Name: inMsg.Origin,
}
channel := inMsg.Args[0]
if channel == i.config.Nick {
channel = inMsg.Args[0]
}
isAction := false
var message string
if len(inMsg.Args) > 1 {
message = inMsg.Args[1]
isAction = strings.HasPrefix(message, actionPrefix)
if isAction {
message = strings.TrimRight(message[len(actionPrefix):], "\x01")
message = strings.TrimSpace(message)
}
}
iscmd := false
filteredMessage := message
if !isAction {
iscmd, filteredMessage = bot.IsCmd(i.config, message)
}
msg := bot.Message{
User: &user,
Channel: channel,
Body: filteredMessage,
Raw: message,
Command: iscmd,
Action: isAction,
Time: time.Now(),
Host: inMsg.Host,
}
return msg
}

190
main.go
View File

@ -4,181 +4,47 @@ package main
import (
"flag"
"io"
"log"
"os"
"time"
"github.com/velour/catbase/bot"
"github.com/velour/catbase/config"
"github.com/velour/catbase/irc"
"github.com/velour/catbase/plugins"
"github.com/velour/velour/irc"
)
const (
// DefaultPort is the port used to connect to
// the server if one is not specified.
defaultPort = "6667"
// InitialTimeout is the initial amount of time
// to delay before reconnecting. Each failed
// reconnection doubles the timout until
// a connection is made successfully.
initialTimeout = 2 * time.Second
// PingTime is the amount of inactive time
// to wait before sending a ping to the server.
pingTime = 120 * time.Second
)
var (
Client *irc.Client
Bot *bot.Bot
Config *config.Config
"github.com/velour/catbase/slack"
)
func main() {
var err error
var cfile = flag.String("config", "config.json",
"Config file to load. (Defaults to config.json)")
flag.Parse() // parses the logging flags.
Config = config.Readconfig(Version, *cfile)
Client, err = irc.DialSSL(
Config.Server,
Config.Nick,
Config.FullName,
Config.Pass,
true,
)
if err != nil {
log.Fatal(err)
}
Bot = bot.NewBot(Config, Client)
// Bot.AddHandler(plugins.NewTestPlugin(Bot))
Bot.AddHandler("admin", plugins.NewAdminPlugin(Bot))
Bot.AddHandler("first", plugins.NewFirstPlugin(Bot))
Bot.AddHandler("downtime", plugins.NewDowntimePlugin(Bot))
Bot.AddHandler("talker", plugins.NewTalkerPlugin(Bot))
Bot.AddHandler("dice", plugins.NewDicePlugin(Bot))
Bot.AddHandler("beers", plugins.NewBeersPlugin(Bot))
Bot.AddHandler("counter", plugins.NewCounterPlugin(Bot))
Bot.AddHandler("remember", plugins.NewRememberPlugin(Bot))
Bot.AddHandler("skeleton", plugins.NewSkeletonPlugin(Bot))
Bot.AddHandler("your", plugins.NewYourPlugin(Bot))
// catches anything left, will always return true
Bot.AddHandler("factoid", plugins.NewFactoidPlugin(Bot))
handleConnection()
// And a signal on disconnect
quit := make(chan bool)
// Wait for disconnect
<-quit
}
func handleConnection() {
t := time.NewTimer(pingTime)
defer func() {
t.Stop()
close(Client.Out)
for err := range Client.Errors {
if err != io.EOF {
log.Println(err)
}
}
}()
for {
select {
case msg, ok := <-Client.In:
if !ok { // disconnect
return
}
t.Stop()
t = time.NewTimer(pingTime)
handleMsg(msg)
case <-t.C:
Client.Out <- irc.Msg{Cmd: irc.PING, Args: []string{Client.Server}}
t = time.NewTimer(pingTime)
case err, ok := <-Client.Errors:
if ok && err != io.EOF {
log.Println(err)
return
}
}
}
}
// HandleMsg handles IRC messages from the server.
func handleMsg(msg irc.Msg) {
switch msg.Cmd {
case irc.ERROR:
log.Println(1, "Received error: "+msg.Raw)
case irc.PING:
Client.Out <- irc.Msg{Cmd: irc.PONG}
case irc.PONG:
// OK, ignore
case irc.ERR_NOSUCHNICK:
Bot.EventRecieved(Client, msg)
case irc.ERR_NOSUCHCHANNEL:
Bot.EventRecieved(Client, msg)
case irc.RPL_MOTD:
Bot.EventRecieved(Client, msg)
case irc.RPL_NAMREPLY:
Bot.EventRecieved(Client, msg)
case irc.RPL_TOPIC:
Bot.EventRecieved(Client, msg)
case irc.KICK:
Bot.EventRecieved(Client, msg)
case irc.TOPIC:
Bot.EventRecieved(Client, msg)
case irc.MODE:
Bot.EventRecieved(Client, msg)
case irc.JOIN:
Bot.EventRecieved(Client, msg)
case irc.PART:
Bot.EventRecieved(Client, msg)
case irc.QUIT:
os.Exit(1)
case irc.NOTICE:
Bot.EventRecieved(Client, msg)
case irc.PRIVMSG:
Bot.MsgRecieved(Client, msg)
case irc.NICK:
Bot.EventRecieved(Client, msg)
case irc.RPL_WHOREPLY:
Bot.EventRecieved(Client, msg)
case irc.RPL_ENDOFWHO:
Bot.EventRecieved(Client, msg)
c := config.Readconfig(Version, *cfile)
var client bot.Connector
switch c.Type {
case "irc":
client = irc.New(c)
case "slack":
client = slack.New(c)
default:
cmd := irc.CmdNames[msg.Cmd]
log.Println("(" + cmd + ") " + msg.Raw)
log.Fatalf("Unknown connection type: %s", c.Type)
}
b := bot.NewBot(c, client)
// b.AddHandler(plugins.NewTestPlugin(b))
b.AddHandler("admin", plugins.NewAdminPlugin(b))
// b.AddHandler("first", plugins.NewFirstPlugin(b))
b.AddHandler("downtime", plugins.NewDowntimePlugin(b))
b.AddHandler("talker", plugins.NewTalkerPlugin(b))
b.AddHandler("dice", plugins.NewDicePlugin(b))
b.AddHandler("beers", plugins.NewBeersPlugin(b))
b.AddHandler("counter", plugins.NewCounterPlugin(b))
b.AddHandler("remember", plugins.NewRememberPlugin(b))
b.AddHandler("skeleton", plugins.NewSkeletonPlugin(b))
b.AddHandler("your", plugins.NewYourPlugin(b))
// catches anything left, will always return true
b.AddHandler("factoid", plugins.NewFactoidPlugin(b))
client.Serve()
}

4
plugins/admin.go
View File

@ -64,10 +64,10 @@ func (p *AdminPlugin) handleVariables(message bot.Message) bool {
var count int64
var varId int64
err := p.DB.QueryRow(`select count(*), varId from variables vs inner join values v on vs.id = v.varId where vs.name = ? and v.value = ?`, variable, value).Scan(&count)
err := p.DB.QueryRow(`select count(*), varId from variables vs inner join "values" v on vs.id = v.varId where vs.name = ? and v.value = ?`, variable, value).Scan(&count)
switch {
case err == sql.ErrNoRows:
_, err := p.DB.Exec(`insert into values (varId, value) values (?, ?)`, varId, value)
_, err := p.DB.Exec(`insert into "values" (varId, value) values (?, ?)`, varId, value)
if err != nil {
log.Println(err)
}

217
slack/slack.go Normal file
View File

@ -0,0 +1,217 @@
// Package to connect to slack service
package slack
import (
"encoding/json"
"fmt"
"html"
"io/ioutil"
"log"
"net/http"
"net/url"
"strings"
"sync/atomic"
"github.com/velour/catbase/bot"
"github.com/velour/catbase/config"
"golang.org/x/net/websocket"
)
type Slack struct {
config *config.Config
url string
id string
ws *websocket.Conn
users map[string]string
eventReceived func(bot.Message)
messageReceived func(bot.Message)
}
var idCounter uint64
type slackUserInfoResp struct {
Ok bool `json:"ok"`
User struct {
Id string `json:"id"`
Name string `json:"name"`
} `json:"user"`
}
type slackMessage struct {
Id uint64 `json:"id"`
Type string `json:"type"`
SubType string `json:"subtype"`
Channel string `json:"channel"`
Text string `json:"text"`
User string `json:"user"`
Error struct {
Code uint64 `json:"code"`
Msg string `json:"msg"`
} `json:"error"`
}
type rtmStart struct {
Ok bool `json:"ok"`
Error string `json:"error"`
Url string `json:"url"`
Self struct {
Id string `json:"id"`
} `json:"self"`
}
func New(c *config.Config) *Slack {
return &Slack{
config: c,
users: make(map[string]string),
}
}
func (s *Slack) RegisterEventReceived(f func(bot.Message)) {
s.eventReceived = f
}
func (s *Slack) RegisterMessageReceived(f func(bot.Message)) {
s.messageReceived = f
}
func (s *Slack) SendMessageType(channel, messageType, subType, message string) error {
m := slackMessage{
Id: atomic.AddUint64(&idCounter, 1),
Type: messageType,
SubType: subType,
Channel: channel,
Text: message,
}
err := websocket.JSON.Send(s.ws, m)
if err != nil {
log.Printf("Error sending Slack message: %s", err)
}
return err
}
func (s *Slack) SendMessage(channel, message string) {
s.SendMessageType(channel, "message", "", message)
}
func (s *Slack) SendAction(channel, message string) {
s.SendMessageType(channel, "message", "me_message", "_"+message+"_")
}
func (s *Slack) receiveMessage() (slackMessage, error) {
m := slackMessage{}
err := websocket.JSON.Receive(s.ws, &m)
return m, err
}
func (s *Slack) Serve() {
s.connect()
for {
msg, err := s.receiveMessage()
if err != nil {
log.Printf("Slack API error: ", err)
}
switch msg.Type {
case "message":
s.messageReceived(s.buildMessage(msg))
case "error":
log.Printf("Slack error, code: %d, message: %s", msg.Error.Code, msg.Error.Msg)
case "": // what even is this?
case "hello":
case "presence_change":
case "user_typing":
case "reconnect_url":
// squeltch this stuff
default:
log.Printf("Unhandled Slack message type: '%s'", msg.Type)
}
}
}
// Convert a slackMessage to a bot.Message
func (s *Slack) buildMessage(msg slackMessage) bot.Message {
log.Println("DEBUG: msg: %%#v", msg)
text := html.UnescapeString(msg.Text)
isCmd, text := bot.IsCmd(s.config, text)
isAction := strings.HasPrefix(text, "/me ")
if isAction {
text = text[3:]
}
user := s.getUser(msg.User)
return bot.Message{
User: &bot.User{
Name: user,
},
Body: text,
Raw: msg.Text,
Channel: msg.Channel,
Command: isCmd,
Action: isAction,
Host: string(msg.Id),
}
}
func (s *Slack) connect() {
token := s.config.Slack.Token
url := fmt.Sprintf("https://slack.com/api/rtm.start?token=%s", token)
resp, err := http.Get(url)
if err != nil {
return
}
if resp.StatusCode != 200 {
log.Fatalf("Slack API failed. Code: %d", resp.StatusCode)
}
body, err := ioutil.ReadAll(resp.Body)
resp.Body.Close()
if err != nil {
log.Fatalf("Error reading Slack API body: %s", err)
}
var rtm rtmStart
err = json.Unmarshal(body, &rtm)
if err != nil {
return
}
if !rtm.Ok {
log.Fatalf("Slack error: %s", rtm.Error)
}
s.url = "https://slack.com/api/"
s.id = rtm.Self.Id
s.ws, err = websocket.Dial(rtm.Url, "", s.url)
if err != nil {
log.Fatal(err)
}
}
// Get username for Slack user ID
func (s *Slack) getUser(id string) string {
if name, ok := s.users[id]; ok {
return name
}
log.Printf("User %s not already found, requesting info", id)
u := s.url + "users.info"
resp, err := http.PostForm(u,
url.Values{"token": {s.config.Slack.Token}, "user": {id}})
if err != nil || resp.StatusCode != 200 {
log.Printf("Error posting user info request: %d %s",
resp.StatusCode, err)
return "UNKNOWN"
}
var userInfo slackUserInfoResp
err = json.NewDecoder(resp.Body).Decode(&userInfo)
if err != nil {
log.Println("Error decoding response: ", err)
return "UNKNOWN"
}
s.users[id] = userInfo.User.Name
return s.users[id]
}