slackApp: create new connector for an app

* Using a library because I'm lazy.
* Fixed a few noisy things in Twitch and Untappd
* Moved connectors to a common place

bot/handlers.go

@@ -17,7 +17,7 @@ import (
 	"github.com/velour/catbase/bot/msg"
 )
 
-func (b *bot) Receive(kind Kind, msg msg.Message, args ...interface{}) {
+func (b *bot) Receive(kind Kind, msg msg.Message, args ...interface{}) bool {
 	log.Println("Received event: ", msg)
 
 	// msg := b.buildMessage(client, inMsg)
@@ -36,7 +36,7 @@ func (b *bot) Receive(kind Kind, msg msg.Message, args ...interface{}) {
 
 RET:
 	b.logIn <- msg
-	return
+	return true
 }
 
 func (b *bot) runCallback(plugin Plugin, evt Kind, message msg.Message, args ...interface{}) bool {

bot/interfaces.go

@@ -49,7 +49,7 @@ type Bot interface {
 	// First arg should be one of bot.Message/Reply/Action/etc
 	Send(Kind, ...interface{}) (string, error)
 	// First arg should be one of bot.Message/Reply/Action/etc
-	Receive(Kind, msg.Message, ...interface{})
+	Receive(Kind, msg.Message, ...interface{}) bool
 	// Register a callback
 	Register(Plugin, Kind, Callback)
 
@@ -63,7 +63,7 @@ type Bot interface {
 
 // Connector represents a server connection to a chat service
 type Connector interface {
-	RegisterEvent(func(Kind, msg.Message, ...interface{}))
+	RegisterEvent(Callback)
 
 	Send(Kind, ...interface{}) (string, error)
 

bot/mock.go

@@ -48,7 +48,7 @@ func (mb *MockBot) Send(kind Kind, args ...interface{}) (string, error) {
 }
 func (mb *MockBot) AddPlugin(f Plugin)                                           {}
 func (mb *MockBot) Register(p Plugin, kind Kind, cb Callback)                    {}
-func (mb *MockBot) Receive(kind Kind, msg msg.Message, args ...interface{}) {}
+func (mb *MockBot) Receive(kind Kind, msg msg.Message, args ...interface{}) bool { return false }
 func (mb *MockBot) Filter(msg msg.Message, s string) string                      { return s }
 func (mb *MockBot) LastMessage(ch string) (msg.Message, error)                   { return msg.Message{}, nil }
 func (mb *MockBot) CheckAdmin(nick string) bool                                  { return false }

connectors/irc/irc.go

@@ -0,0 +1,295 @@
+// © 2016 the CatBase Authors under the WTFPL license. See AUTHORS for the list of authors.
+
+package irc
+
+import (
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/velour/catbase/bot"
+	"github.com/velour/catbase/bot/msg"
+	"github.com/velour/catbase/bot/user"
+	"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
+
+	event bot.Callback
+}
+
+func New(c *config.Config) *Irc {
+	i := Irc{}
+	i.config = c
+
+	return &i
+}
+
+func (i *Irc) RegisterEvent(f bot.Callback) {
+	i.event = f
+}
+
+func (i *Irc) Send(kind bot.Kind, args ...interface{}) (string, error) {
+	switch kind {
+	case bot.Reply:
+	case bot.Message:
+		return i.sendMessage(args[0].(string), args[1].(string))
+	case bot.Action:
+		return i.sendAction(args[0].(string), args[1].(string))
+	default:
+	}
+	return "", nil
+}
+
+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) (string, error) {
+	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.GetInt("RatePerSec", 5)
+			throttle = time.Tick(time.Second / time.Duration(ratePerSec))
+		}
+
+		<-throttle
+
+		i.Client.Out <- m
+	}
+	return "NO_IRC_IDENTIFIERS", nil
+}
+
+// Sends action to channel
+func (i *Irc) sendAction(channel, message string) (string, error) {
+	message = actionPrefix + " " + message + "\x01"
+
+	return i.sendMessage(channel, message)
+}
+
+func (i *Irc) GetEmojiList() map[string]string {
+	//we're not going to do anything because it's IRC
+	return make(map[string]string)
+}
+
+func (i *Irc) Serve() error {
+	if i.event == nil {
+		return fmt.Errorf("Missing an event handler")
+	}
+
+	var err error
+	i.Client, err = irc.DialSSL(
+		i.config.Get("Irc.Server", "localhost"),
+		i.config.Get("Nick", "bot"),
+		i.config.Get("FullName", "bot"),
+		i.config.Get("Irc.Pass", ""),
+		true,
+	)
+	if err != nil {
+		return fmt.Errorf("%s", err)
+	}
+
+	for _, c := range i.config.GetArray("channels", []string{}) {
+		i.JoinChannel(c)
+	}
+
+	i.quit = make(chan bool)
+	go i.handleConnection()
+	<-i.quit
+	return nil
+}
+
+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:
+		fallthrough
+
+	case irc.ERR_NOSUCHCHANNEL:
+		fallthrough
+
+	case irc.RPL_MOTD:
+		fallthrough
+
+	case irc.RPL_NAMREPLY:
+		fallthrough
+
+	case irc.RPL_TOPIC:
+		fallthrough
+
+	case irc.KICK:
+		fallthrough
+
+	case irc.TOPIC:
+		fallthrough
+
+	case irc.MODE:
+		fallthrough
+
+	case irc.JOIN:
+		fallthrough
+
+	case irc.PART:
+		fallthrough
+
+	case irc.NOTICE:
+		fallthrough
+
+	case irc.NICK:
+		fallthrough
+
+	case irc.RPL_WHOREPLY:
+		fallthrough
+
+	case irc.RPL_ENDOFWHO:
+		i.event(bot.Event, botMsg)
+
+	case irc.PRIVMSG:
+		i.event(bot.Message, botMsg)
+
+	case irc.QUIT:
+		os.Exit(1)
+
+	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) msg.Message {
+	// Check for the user
+	u := user.User{
+		Name: inMsg.Origin,
+	}
+
+	channel := inMsg.Args[0]
+	if channel == i.config.Get("Nick", "bot") {
+		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 := msg.Message{
+		User:    &u,
+		Channel: channel,
+		Body:    filteredMessage,
+		Raw:     message,
+		Command: iscmd,
+		Action:  isAction,
+		Time:    time.Now(),
+		Host:    inMsg.Host,
+	}
+
+	return msg
+}
+
+func (i Irc) Who(channel string) []string {
+	return []string{}
+}

connectors/slack/fix_text.go

@@ -0,0 +1,96 @@
+package slack
+
+import (
+	"unicode/utf8"
+)
+
+// fixText strips all of the Slack-specific annotations from message text,
+// replacing it with the equivalent display form.
+// Currently it:
+// • Replaces user mentions like <@U124356> with @ followed by the user's nick.
+// This uses the lookupUser function, which must map U1243456 to the nick.
+// • Replaces user mentions like <U123456|nick> with the user's nick.
+// • Strips < and > surrounding links.
+//
+// This was directly bogarted from velour/chat with emoji conversion removed.
+func fixText(findUser func(id string) (string, bool), text string) string {
+	var output []rune
+	for len(text) > 0 {
+		r, i := utf8.DecodeRuneInString(text)
+		text = text[i:]
+		switch {
+		case r == '<':
+			var tag []rune
+			for {
+				r, i := utf8.DecodeRuneInString(text)
+				text = text[i:]
+				switch {
+				case r == '>':
+					if t, ok := fixTag(findUser, tag); ok {
+						output = append(output, t...)
+						break
+					}
+					fallthrough
+				case len(text) == 0:
+					output = append(output, '<')
+					output = append(output, tag...)
+					output = append(output, r)
+				default:
+					tag = append(tag, r)
+					continue
+				}
+				break
+			}
+		default:
+			output = append(output, r)
+		}
+	}
+	return string(output)
+}
+
+func fixTag(findUser func(string) (string, bool), tag []rune) ([]rune, bool) {
+	switch {
+	case hasPrefix(tag, "@U"):
+		if i := indexRune(tag, '|'); i >= 0 {
+			return tag[i+1:], true
+		}
+		if findUser != nil {
+			if u, ok := findUser(string(tag[1:])); ok {
+				return []rune(u), true
+			}
+		}
+		return tag, true
+
+	case hasPrefix(tag, "#C"):
+		if i := indexRune(tag, '|'); i >= 0 {
+			return append([]rune{'#'}, tag[i+1:]...), true
+		}
+
+	case hasPrefix(tag, "http"):
+		if i := indexRune(tag, '|'); i >= 0 {
+			tag = tag[:i]
+		}
+		return tag, true
+	}
+
+	return nil, false
+}
+
+func hasPrefix(text []rune, prefix string) bool {
+	for _, r := range prefix {
+		if len(text) == 0 || text[0] != r {
+			return false
+		}
+		text = text[1:]
+	}
+	return true
+}
+
+func indexRune(text []rune, find rune) int {
+	for i, r := range text {
+		if r == find {
+			return i
+		}
+	}
+	return -1
+}

connectors/slack/slack.go

@@ -0,0 +1,736 @@
+// © 2016 the CatBase Authors under the WTFPL license. See AUTHORS for the list of authors.
+
+// Package slack connects to slack service
+package slack
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"html"
+	"io"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"net/url"
+	"regexp"
+	"strconv"
+	"strings"
+
+	// "sync/atomic"
+	"context"
+	"time"
+
+	"github.com/velour/catbase/bot"
+	"github.com/velour/catbase/bot/msg"
+	"github.com/velour/catbase/bot/user"
+	"github.com/velour/catbase/config"
+	"github.com/velour/chat/websocket"
+)
+
+type Slack struct {
+	config *config.Config
+
+	url   string
+	id    string
+	token string
+	ws    *websocket.Conn
+
+	lastRecieved time.Time
+
+	users map[string]string
+
+	myBotID string
+
+	emoji map[string]string
+
+	event bot.Callback
+}
+
+var idCounter uint64
+
+type slackUserInfoResp struct {
+	Ok   bool `json:"ok"`
+	User struct {
+		ID   string `json:"id"`
+		Name string `json:"name"`
+	} `json:"user"`
+}
+
+type slackChannelListItem struct {
+	ID             string   `json:"id"`
+	Name           string   `json:"name"`
+	IsChannel      bool     `json:"is_channel"`
+	Created        int      `json:"created"`
+	Creator        string   `json:"creator"`
+	IsArchived     bool     `json:"is_archived"`
+	IsGeneral      bool     `json:"is_general"`
+	NameNormalized string   `json:"name_normalized"`
+	IsShared       bool     `json:"is_shared"`
+	IsOrgShared    bool     `json:"is_org_shared"`
+	IsMember       bool     `json:"is_member"`
+	Members        []string `json:"members"`
+	Topic          struct {
+		Value   string `json:"value"`
+		Creator string `json:"creator"`
+		LastSet int    `json:"last_set"`
+	} `json:"topic"`
+	Purpose struct {
+		Value   string `json:"value"`
+		Creator string `json:"creator"`
+		LastSet int    `json:"last_set"`
+	} `json:"purpose"`
+	PreviousNames []interface{} `json:"previous_names"`
+	NumMembers    int           `json:"num_members"`
+}
+
+type slackChannelListResp struct {
+	Ok       bool                   `json:"ok"`
+	Channels []slackChannelListItem `json:"channels"`
+}
+
+type slackChannelInfoResp struct {
+	Ok      bool `json:"ok"`
+	Channel struct {
+		ID             string `json:"id"`
+		Name           string `json:"name"`
+		IsChannel      bool   `json:"is_channel"`
+		Created        int    `json:"created"`
+		Creator        string `json:"creator"`
+		IsArchived     bool   `json:"is_archived"`
+		IsGeneral      bool   `json:"is_general"`
+		NameNormalized string `json:"name_normalized"`
+		IsReadOnly     bool   `json:"is_read_only"`
+		IsShared       bool   `json:"is_shared"`
+		IsOrgShared    bool   `json:"is_org_shared"`
+		IsMember       bool   `json:"is_member"`
+		LastRead       string `json:"last_read"`
+		Latest         struct {
+			Type string `json:"type"`
+			User string `json:"user"`
+			Text string `json:"text"`
+			Ts   string `json:"ts"`
+		} `json:"latest"`
+		UnreadCount        int      `json:"unread_count"`
+		UnreadCountDisplay int      `json:"unread_count_display"`
+		Members            []string `json:"members"`
+		Topic              struct {
+			Value   string `json:"value"`
+			Creator string `json:"creator"`
+			LastSet int64  `json:"last_set"`
+		} `json:"topic"`
+		Purpose struct {
+			Value   string `json:"value"`
+			Creator string `json:"creator"`
+			LastSet int    `json:"last_set"`
+		} `json:"purpose"`
+		PreviousNames []string `json:"previous_names"`
+	} `json:"channel"`
+}
+
+type slackMessage struct {
+	ID       uint64 `json:"id"`
+	Type     string `json:"type"`
+	SubType  string `json:"subtype"`
+	Hidden   bool   `json:"hidden"`
+	Channel  string `json:"channel"`
+	Text     string `json:"text"`
+	User     string `json:"user"`
+	Username string `json:"username"`
+	BotID    string `json:"bot_id"`
+	Ts       string `json:"ts"`
+	ThreadTs string `json:"thread_ts"`
+	Error    struct {
+		Code uint64 `json:"code"`
+		Msg  string `json:"msg"`
+	} `json:"error"`
+}
+
+type slackReaction struct {
+	Reaction  string  `json:"name"`
+	Channel   string  `json:"channel"`
+	Timestamp float64 `json:"timestamp"`
+}
+
+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 {
+	token := c.Get("slack.token", "NONE")
+	if token == "NONE" {
+		log.Fatalf("No slack token found. Set SLACKTOKEN env.")
+	}
+	return &Slack{
+		config:       c,
+		token:        c.Get("slack.token", ""),
+		lastRecieved: time.Now(),
+		users:        make(map[string]string),
+		emoji:        make(map[string]string),
+	}
+}
+
+func (s *Slack) Send(kind bot.Kind, args ...interface{}) (string, error) {
+	switch kind {
+	case bot.Message:
+		return s.sendMessage(args[0].(string), args[1].(string))
+	case bot.Action:
+		return s.sendAction(args[0].(string), args[1].(string))
+	case bot.Edit:
+		return s.edit(args[0].(string), args[1].(string), args[2].(string))
+	case bot.Reply:
+		switch args[2].(type) {
+		case msg.Message:
+			return s.replyToMessage(args[0].(string), args[1].(string), args[2].(msg.Message))
+		case string:
+			return s.replyToMessageIdentifier(args[0].(string), args[1].(string), args[2].(string))
+		default:
+			return "", fmt.Errorf("Invalid types given to Reply")
+		}
+	case bot.Reaction:
+		return s.react(args[0].(string), args[1].(string), args[2].(msg.Message))
+	default:
+	}
+	return "", fmt.Errorf("No handler for message type %d", kind)
+}
+
+func checkReturnStatus(response *http.Response) error {
+	type Response struct {
+		OK bool `json:"ok"`
+	}
+
+	body, err := ioutil.ReadAll(response.Body)
+	response.Body.Close()
+	if err != nil {
+		err := fmt.Errorf("Error reading Slack API body: %s", err)
+		return err
+	}
+
+	var resp Response
+	err = json.Unmarshal(body, &resp)
+	if err != nil {
+		err := fmt.Errorf("Error parsing message response: %s", err)
+		return err
+	}
+	return nil
+}
+
+func (s *Slack) RegisterEvent(f bot.Callback) {
+	s.event = f
+}
+
+func (s *Slack) sendMessageType(channel, message string, meMessage bool) (string, error) {
+	postUrl := "https://slack.com/api/chat.postMessage"
+	if meMessage {
+		postUrl = "https://slack.com/api/chat.meMessage"
+	}
+
+	nick := s.config.Get("Nick", "bot")
+	icon := s.config.Get("IconURL", "https://placekitten.com/128/128")
+
+	resp, err := http.PostForm(postUrl,
+		url.Values{"token": {s.token},
+			"username": {nick},
+			"icon_url": {icon},
+			"channel":  {channel},
+			"text":     {message},
+		})
+
+	if err != nil {
+		log.Printf("Error sending Slack message: %s", err)
+	}
+
+	body, err := ioutil.ReadAll(resp.Body)
+	resp.Body.Close()
+	if err != nil {
+		log.Fatalf("Error reading Slack API body: %s", err)
+	}
+
+	log.Println(string(body))
+
+	type MessageResponse struct {
+		OK        bool   `json:"ok"`
+		Timestamp string `json:"ts"`
+		Message   struct {
+			BotID string `json:"bot_id"`
+		} `json:"message"`
+	}
+
+	var mr MessageResponse
+	err = json.Unmarshal(body, &mr)
+	if err != nil {
+		log.Fatalf("Error parsing message response: %s", err)
+	}
+
+	if !mr.OK {
+		return "", errors.New("failure response received")
+	}
+
+	s.myBotID = mr.Message.BotID
+
+	return mr.Timestamp, err
+}
+
+func (s *Slack) sendMessage(channel, message string) (string, error) {
+	log.Printf("Sending message to %s: %s", channel, message)
+	identifier, err := s.sendMessageType(channel, message, false)
+	return identifier, err
+}
+
+func (s *Slack) sendAction(channel, message string) (string, error) {
+	log.Printf("Sending action to %s: %s", channel, message)
+	identifier, err := s.sendMessageType(channel, "_"+message+"_", true)
+	return identifier, err
+}
+
+func (s *Slack) replyToMessageIdentifier(channel, message, identifier string) (string, error) {
+	nick := s.config.Get("Nick", "bot")
+	icon := s.config.Get("IconURL", "https://placekitten.com/128/128")
+
+	resp, err := http.PostForm("https://slack.com/api/chat.postMessage",
+		url.Values{"token": {s.token},
+			"username":  {nick},
+			"icon_url":  {icon},
+			"channel":   {channel},
+			"text":      {message},
+			"thread_ts": {identifier},
+		})
+
+	if err != nil {
+		err := fmt.Errorf("Error sending Slack reply: %s", err)
+		return "", err
+	}
+
+	body, err := ioutil.ReadAll(resp.Body)
+	resp.Body.Close()
+	if err != nil {
+		err := fmt.Errorf("Error reading Slack API body: %s", err)
+		return "", err
+	}
+
+	log.Println(string(body))
+
+	type MessageResponse struct {
+		OK        bool   `json:"ok"`
+		Timestamp string `json:"ts"`
+	}
+
+	var mr MessageResponse
+	err = json.Unmarshal(body, &mr)
+	if err != nil {
+		err := fmt.Errorf("Error parsing message response: %s", err)
+		return "", err
+	}
+
+	if !mr.OK {
+		return "", fmt.Errorf("Got !OK from slack message response")
+	}
+
+	return mr.Timestamp, err
+}
+
+func (s *Slack) replyToMessage(channel, message string, replyTo msg.Message) (string, error) {
+	return s.replyToMessageIdentifier(channel, message, replyTo.AdditionalData["RAW_SLACK_TIMESTAMP"])
+}
+
+func (s *Slack) react(channel, reaction string, message msg.Message) (string, error) {
+	log.Printf("Reacting in %s: %s", channel, reaction)
+	resp, err := http.PostForm("https://slack.com/api/reactions.add",
+		url.Values{"token": {s.token},
+			"name":      {reaction},
+			"channel":   {channel},
+			"timestamp": {message.AdditionalData["RAW_SLACK_TIMESTAMP"]}})
+	if err != nil {
+		err := fmt.Errorf("reaction failed: %s", err)
+		return "", err
+	}
+	return "", checkReturnStatus(resp)
+}
+
+func (s *Slack) edit(channel, newMessage, identifier string) (string, error) {
+	log.Printf("Editing in (%s) %s: %s", identifier, channel, newMessage)
+	resp, err := http.PostForm("https://slack.com/api/chat.update",
+		url.Values{"token": {s.token},
+			"channel": {channel},
+			"text":    {newMessage},
+			"ts":      {identifier}})
+	if err != nil {
+		err := fmt.Errorf("edit failed: %s", err)
+		return "", err
+	}
+	return "", checkReturnStatus(resp)
+}
+
+func (s *Slack) GetEmojiList() map[string]string {
+	return s.emoji
+}
+
+func (s *Slack) populateEmojiList() {
+	resp, err := http.PostForm("https://slack.com/api/emoji.list",
+		url.Values{"token": {s.token}})
+	if err != nil {
+		log.Printf("Error retrieving emoji list from Slack: %s", err)
+		return
+	}
+
+	body, err := ioutil.ReadAll(resp.Body)
+	resp.Body.Close()
+	if err != nil {
+		log.Fatalf("Error reading Slack API body: %s", err)
+	}
+
+	type EmojiListResponse struct {
+		OK    bool              `json:"ok"`
+		Emoji map[string]string `json:"emoji"`
+	}
+
+	var list EmojiListResponse
+	err = json.Unmarshal(body, &list)
+	if err != nil {
+		log.Fatalf("Error parsing emoji list: %s", err)
+	}
+	s.emoji = list.Emoji
+}
+
+func (s *Slack) ping(ctx context.Context) {
+	ticker := time.NewTicker(10 * time.Second)
+	defer ticker.Stop()
+	for {
+		select {
+		case <-ctx.Done():
+			return
+		case <-ticker.C:
+			ping := map[string]interface{}{"type": "ping", "time": time.Now().UnixNano()}
+			if err := s.ws.Send(context.TODO(), ping); err != nil {
+				panic(err)
+			}
+		}
+	}
+}
+
+func (s *Slack) receiveMessage() (slackMessage, error) {
+	m := slackMessage{}
+	err := s.ws.Recv(context.TODO(), &m)
+	if err != nil {
+		log.Println("Error decoding WS message")
+		panic(fmt.Errorf("%v\n%v", m, err))
+	}
+	return m, nil
+}
+
+// I think it's horseshit that I have to do this
+func slackTStoTime(t string) time.Time {
+	ts := strings.Split(t, ".")
+	sec, _ := strconv.ParseInt(ts[0], 10, 64)
+	nsec, _ := strconv.ParseInt(ts[1], 10, 64)
+	return time.Unix(sec, nsec)
+}
+
+func (s *Slack) Serve() error {
+	s.connect()
+	s.populateEmojiList()
+
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+	go s.ping(ctx)
+
+	for {
+		msg, err := s.receiveMessage()
+		if err != nil && err == io.EOF {
+			log.Fatalf("Slack API EOF")
+		} else if err != nil {
+			return fmt.Errorf("Slack API error: %s", err)
+		}
+		switch msg.Type {
+		case "message":
+			isItMe := msg.BotID != "" && msg.BotID == s.myBotID
+			if !isItMe && !msg.Hidden && msg.ThreadTs == "" {
+				m := s.buildMessage(msg)
+				if m.Time.Before(s.lastRecieved) {
+					log.Printf("Ignoring message: %+v\nlastRecieved: %v msg: %v", msg.ID, s.lastRecieved, m.Time)
+				} else {
+					s.lastRecieved = m.Time
+					s.event(bot.Message, m)
+				}
+			} else if msg.ThreadTs != "" {
+				//we're throwing away some information here by not parsing the correct reply object type, but that's okay
+				s.event(bot.Reply, s.buildLightReplyMessage(msg), msg.ThreadTs)
+			} else {
+				log.Printf("THAT MESSAGE WAS HIDDEN: %+v", msg.ID)
+			}
+		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":
+		case "desktop_notification":
+		case "pong":
+			// squeltch this stuff
+			continue
+		default:
+			log.Printf("Unhandled Slack message type: '%s'", msg.Type)
+		}
+	}
+}
+
+var urlDetector = regexp.MustCompile(`<(.+)://([^|^>]+).*>`)
+
+// Convert a slackMessage to a msg.Message
+func (s *Slack) buildMessage(m slackMessage) msg.Message {
+	text := html.UnescapeString(m.Text)
+
+	text = fixText(s.getUser, text)
+
+	isCmd, text := bot.IsCmd(s.config, text)
+
+	isAction := m.SubType == "me_message"
+
+	u, _ := s.getUser(m.User)
+	if m.Username != "" {
+		u = m.Username
+	}
+
+	tstamp := slackTStoTime(m.Ts)
+
+	return msg.Message{
+		User: &user.User{
+			ID:   m.User,
+			Name: u,
+		},
+		Body:    text,
+		Raw:     m.Text,
+		Channel: m.Channel,
+		Command: isCmd,
+		Action:  isAction,
+		Host:    string(m.ID),
+		Time:    tstamp,
+		AdditionalData: map[string]string{
+			"RAW_SLACK_TIMESTAMP": m.Ts,
+		},
+	}
+}
+
+func (s *Slack) buildLightReplyMessage(m slackMessage) msg.Message {
+	text := html.UnescapeString(m.Text)
+
+	text = fixText(s.getUser, text)
+
+	isCmd, text := bot.IsCmd(s.config, text)
+
+	isAction := m.SubType == "me_message"
+
+	u, _ := s.getUser(m.User)
+	if m.Username != "" {
+		u = m.Username
+	}
+
+	tstamp := slackTStoTime(m.Ts)
+
+	return msg.Message{
+		User: &user.User{
+			ID:   m.User,
+			Name: u,
+		},
+		Body:    text,
+		Raw:     m.Text,
+		Channel: m.Channel,
+		Command: isCmd,
+		Action:  isAction,
+		Host:    string(m.ID),
+		Time:    tstamp,
+		AdditionalData: map[string]string{
+			"RAW_SLACK_TIMESTAMP": m.Ts,
+		},
+	}
+}
+
+// markAllChannelsRead gets a list of all channels and marks each as read
+func (s *Slack) markAllChannelsRead() {
+	chs := s.getAllChannels()
+	log.Printf("Got list of channels to mark read: %+v", chs)
+	for _, ch := range chs {
+		s.markChannelAsRead(ch.ID)
+	}
+	log.Printf("Finished marking channels read")
+}
+
+// getAllChannels returns info for all channels joined
+func (s *Slack) getAllChannels() []slackChannelListItem {
+	u := s.url + "channels.list"
+	resp, err := http.PostForm(u,
+		url.Values{"token": {s.token}})
+	if err != nil {
+		log.Printf("Error posting user info request: %s",
+			err)
+		return nil
+	}
+	if resp.StatusCode != 200 {
+		log.Printf("Error posting user info request: %d",
+			resp.StatusCode)
+		return nil
+	}
+	defer resp.Body.Close()
+	var chanInfo slackChannelListResp
+	err = json.NewDecoder(resp.Body).Decode(&chanInfo)
+	if err != nil || !chanInfo.Ok {
+		log.Println("Error decoding response: ", err)
+		return nil
+	}
+	return chanInfo.Channels
+}
+
+// markAsRead marks a channel read
+func (s *Slack) markChannelAsRead(slackChanId string) error {
+	u := s.url + "channels.info"
+	resp, err := http.PostForm(u,
+		url.Values{"token": {s.token}, "channel": {slackChanId}})
+	if err != nil {
+		log.Printf("Error posting user info request: %s",
+			err)
+		return err
+	}
+	if resp.StatusCode != 200 {
+		log.Printf("Error posting user info request: %d",
+			resp.StatusCode)
+		return err
+	}
+	defer resp.Body.Close()
+	var chanInfo slackChannelInfoResp
+	err = json.NewDecoder(resp.Body).Decode(&chanInfo)
+	log.Printf("%+v, %+v", err, chanInfo)
+	if err != nil || !chanInfo.Ok {
+		log.Println("Error decoding response: ", err)
+		return err
+	}
+
+	u = s.url + "channels.mark"
+	resp, err = http.PostForm(u,
+		url.Values{"token": {s.token}, "channel": {slackChanId}, "ts": {chanInfo.Channel.Latest.Ts}})
+	if err != nil {
+		log.Printf("Error posting user info request: %s",
+			err)
+		return err
+	}
+	if resp.StatusCode != 200 {
+		log.Printf("Error posting user info request: %d",
+			resp.StatusCode)
+		return err
+	}
+	defer resp.Body.Close()
+	var markInfo map[string]interface{}
+	err = json.NewDecoder(resp.Body).Decode(&markInfo)
+	log.Printf("%+v, %+v", err, markInfo)
+	if err != nil {
+		log.Println("Error decoding response: ", err)
+		return err
+	}
+
+	log.Printf("Marked %s as read", slackChanId)
+	return nil
+}
+
+func (s *Slack) connect() {
+	token := s.token
+	u := fmt.Sprintf("https://slack.com/api/rtm.connect?token=%s", token)
+	resp, err := http.Get(u)
+	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
+
+	// This is hitting the rate limit, and it may not be needed
+	//s.markAllChannelsRead()
+
+	rtmURL, _ := url.Parse(rtm.URL)
+	s.ws, err = websocket.Dial(context.TODO(), rtmURL)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+// Get username for Slack user ID
+func (s *Slack) getUser(id string) (string, bool) {
+	if name, ok := s.users[id]; ok {
+		return name, true
+	}
+
+	log.Printf("User %s not already found, requesting info", id)
+	u := s.url + "users.info"
+	resp, err := http.PostForm(u,
+		url.Values{"token": {s.token}, "user": {id}})
+	if err != nil || resp.StatusCode != 200 {
+		log.Printf("Error posting user info request: %d %s",
+			resp.StatusCode, err)
+		return "UNKNOWN", false
+	}
+	defer resp.Body.Close()
+	var userInfo slackUserInfoResp
+	err = json.NewDecoder(resp.Body).Decode(&userInfo)
+	if err != nil {
+		log.Println("Error decoding response: ", err)
+		return "UNKNOWN", false
+	}
+	s.users[id] = userInfo.User.Name
+	return s.users[id], true
+}
+
+// Who gets usernames out of a channel
+func (s *Slack) Who(id string) []string {
+	log.Println("Who is queried for ", id)
+	u := s.url + "channels.info"
+	resp, err := http.PostForm(u,
+		url.Values{"token": {s.token}, "channel": {id}})
+	if err != nil {
+		log.Printf("Error posting user info request: %s",
+			err)
+		return []string{}
+	}
+	if resp.StatusCode != 200 {
+		log.Printf("Error posting user info request: %d",
+			resp.StatusCode)
+		return []string{}
+	}
+	defer resp.Body.Close()
+	var chanInfo slackChannelInfoResp
+	err = json.NewDecoder(resp.Body).Decode(&chanInfo)
+	if err != nil || !chanInfo.Ok {
+		log.Println("Error decoding response: ", err)
+		return []string{}
+	}
+
+	log.Printf("%#v", chanInfo.Channel)
+
+	handles := []string{}
+	for _, member := range chanInfo.Channel.Members {
+		u, _ := s.getUser(member)
+		handles = append(handles, u)
+	}
+	log.Printf("Returning %d handles", len(handles))
+	return handles
+}

connectors/slackapp/fix_text.go

@@ -0,0 +1,96 @@
+package slackapp
+
+import (
+	"unicode/utf8"
+)
+
+// fixText strips all of the Slack-specific annotations from message text,
+// replacing it with the equivalent display form.
+// Currently it:
+// • Replaces user mentions like <@U124356> with @ followed by the user's nick.
+// This uses the lookupUser function, which must map U1243456 to the nick.
+// • Replaces user mentions like <U123456|nick> with the user's nick.
+// • Strips < and > surrounding links.
+//
+// This was directly bogarted from velour/chat with emoji conversion removed.
+func fixText(findUser func(id string) (string, bool), text string) string {
+	var output []rune
+	for len(text) > 0 {
+		r, i := utf8.DecodeRuneInString(text)
+		text = text[i:]
+		switch {
+		case r == '<':
+			var tag []rune
+			for {
+				r, i := utf8.DecodeRuneInString(text)
+				text = text[i:]
+				switch {
+				case r == '>':
+					if t, ok := fixTag(findUser, tag); ok {
+						output = append(output, t...)
+						break
+					}
+					fallthrough
+				case len(text) == 0:
+					output = append(output, '<')
+					output = append(output, tag...)
+					output = append(output, r)
+				default:
+					tag = append(tag, r)
+					continue
+				}
+				break
+			}
+		default:
+			output = append(output, r)
+		}
+	}
+	return string(output)
+}
+
+func fixTag(findUser func(string) (string, bool), tag []rune) ([]rune, bool) {
+	switch {
+	case hasPrefix(tag, "@U"):
+		if i := indexRune(tag, '|'); i >= 0 {
+			return tag[i+1:], true
+		}
+		if findUser != nil {
+			if u, ok := findUser(string(tag[1:])); ok {
+				return []rune(u), true
+			}
+		}
+		return tag, true
+
+	case hasPrefix(tag, "#C"):
+		if i := indexRune(tag, '|'); i >= 0 {
+			return append([]rune{'#'}, tag[i+1:]...), true
+		}
+
+	case hasPrefix(tag, "http"):
+		if i := indexRune(tag, '|'); i >= 0 {
+			tag = tag[:i]
+		}
+		return tag, true
+	}
+
+	return nil, false
+}
+
+func hasPrefix(text []rune, prefix string) bool {
+	for _, r := range prefix {
+		if len(text) == 0 || text[0] != r {
+			return false
+		}
+		text = text[1:]
+	}
+	return true
+}
+
+func indexRune(text []rune, find rune) int {
+	for i, r := range text {
+		if r == find {
+			return i
+		}
+	}
+	return -1
+}

connectors/slackapp/slackApp.go

@@ -0,0 +1,447 @@
+package slackapp
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"html"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"net/url"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/nlopes/slack"
+	"github.com/nlopes/slack/slackevents"
+
+	"github.com/velour/catbase/bot"
+	"github.com/velour/catbase/bot/msg"
+	"github.com/velour/catbase/bot/user"
+	"github.com/velour/catbase/config"
+)
+
+type SlackApp struct {
+	bot    bot.Bot
+	config *config.Config
+	api    *slack.Client
+
+	token        string
+	verification string
+	id           string
+
+	lastRecieved time.Time
+
+	myBotID string
+	users   map[string]string
+	emoji   map[string]string
+
+	event bot.Callback
+}
+
+func New(c *config.Config) *SlackApp {
+	token := c.Get("slack.token", "NONE")
+	if token == "NONE" {
+		log.Fatalf("No slack token found. Set SLACKTOKEN env.")
+	}
+
+	dbg := slack.OptionDebug(true)
+	api := slack.New(token)
+	dbg(api)
+
+	return &SlackApp{
+		api:          api,
+		config:       c,
+		token:        token,
+		verification: c.Get("slack.verification", "NONE"),
+		lastRecieved: time.Now(),
+		users:        make(map[string]string),
+		emoji:        make(map[string]string),
+	}
+}
+
+func (s *SlackApp) RegisterEvent(f bot.Callback) {
+	s.event = f
+}
+
+func (s *SlackApp) Serve() error {
+	s.populateEmojiList()
+	http.HandleFunc("/evt", func(w http.ResponseWriter, r *http.Request) {
+		buf := new(bytes.Buffer)
+		buf.ReadFrom(r.Body)
+		body := buf.String()
+		eventsAPIEvent, e := slackevents.ParseEvent(json.RawMessage(body), slackevents.OptionVerifyToken(&slackevents.TokenComparator{VerificationToken: s.verification}))
+		if e != nil {
+			log.Println(e)
+			w.WriteHeader(http.StatusInternalServerError)
+		}
+
+		if eventsAPIEvent.Type == slackevents.URLVerification {
+			var r *slackevents.ChallengeResponse
+			err := json.Unmarshal([]byte(body), &r)
+			if err != nil {
+				log.Println(err)
+				w.WriteHeader(http.StatusInternalServerError)
+			}
+			w.Header().Set("Content-Type", "text")
+			w.Write([]byte(r.Challenge))
+		} else if eventsAPIEvent.Type == slackevents.CallbackEvent {
+			innerEvent := eventsAPIEvent.InnerEvent
+			switch ev := innerEvent.Data.(type) {
+			case *slackevents.AppMentionEvent:
+				// This is a bit of a problem. AppMentionEvent also needs to
+				// End up in msgReceived
+				//s.msgReceivd(ev)
+			case *slackevents.MessageEvent:
+				s.msgReceivd(ev)
+			}
+		}
+	})
+	log.Println("[INFO] Server listening")
+	log.Fatal(http.ListenAndServe("0.0.0.0:1337", nil))
+	return nil
+}
+
+func (s *SlackApp) msgReceivd(msg *slackevents.MessageEvent) {
+	isItMe := msg.BotID != "" && msg.BotID == s.myBotID
+	if !isItMe && msg.ThreadTimeStamp == "" {
+		m := s.buildMessage(msg)
+		if m.Time.Before(s.lastRecieved) {
+			log.Printf("Ignoring message: lastRecieved: %v msg: %v", s.lastRecieved, m.Time)
+		} else {
+			s.lastRecieved = m.Time
+			s.event(bot.Message, m)
+		}
+	} else if msg.ThreadTimeStamp != "" {
+		//we're throwing away some information here by not parsing the correct reply object type, but that's okay
+		s.event(bot.Reply, s.buildLightReplyMessage(msg), msg.ThreadTimeStamp)
+	} else {
+		log.Printf("THAT MESSAGE WAS HIDDEN: %+v", msg.Text)
+	}
+}
+
+func (s *SlackApp) Send(kind bot.Kind, args ...interface{}) (string, error) {
+	// TODO: All of these local calls to slack should get routed through the library
+	switch kind {
+	case bot.Message:
+		return s.sendMessage(args[0].(string), args[1].(string))
+	case bot.Action:
+		return s.sendAction(args[0].(string), args[1].(string))
+	case bot.Edit:
+		return s.edit(args[0].(string), args[1].(string), args[2].(string))
+	case bot.Reply:
+		switch args[2].(type) {
+		case msg.Message:
+			return s.replyToMessage(args[0].(string), args[1].(string), args[2].(msg.Message))
+		case string:
+			return s.replyToMessageIdentifier(args[0].(string), args[1].(string), args[2].(string))
+		default:
+			return "", fmt.Errorf("Invalid types given to Reply")
+		}
+	case bot.Reaction:
+		return s.react(args[0].(string), args[1].(string), args[2].(msg.Message))
+	default:
+	}
+	return "", fmt.Errorf("No handler for message type %d", kind)
+}
+
+func (s *SlackApp) sendMessageType(channel, message string, meMessage bool) (string, error) {
+	postUrl := "https://slack.com/api/chat.postMessage"
+	if meMessage {
+		postUrl = "https://slack.com/api/chat.meMessage"
+	}
+
+	nick := s.config.Get("Nick", "bot")
+	icon := s.config.Get("IconURL", "https://placekitten.com/128/128")
+
+	resp, err := http.PostForm(postUrl,
+		url.Values{"token": {s.token},
+			"username": {nick},
+			"icon_url": {icon},
+			"channel":  {channel},
+			"text":     {message},
+		})
+
+	if err != nil {
+		log.Printf("Error sending Slack message: %s", err)
+	}
+
+	body, err := ioutil.ReadAll(resp.Body)
+	resp.Body.Close()
+	if err != nil {
+		log.Fatalf("Error reading Slack API body: %s", err)
+	}
+
+	log.Println(string(body))
+
+	type MessageResponse struct {
+		OK        bool   `json:"ok"`
+		Timestamp string `json:"ts"`
+		Message   struct {
+			BotID string `json:"bot_id"`
+		} `json:"message"`
+	}
+
+	var mr MessageResponse
+	err = json.Unmarshal(body, &mr)
+	if err != nil {
+		log.Fatalf("Error parsing message response: %s", err)
+	}
+
+	if !mr.OK {
+		return "", errors.New("failure response received")
+	}
+
+	s.myBotID = mr.Message.BotID
+
+	return mr.Timestamp, err
+}
+
+func (s *SlackApp) sendMessage(channel, message string) (string, error) {
+	log.Printf("Sending message to %s: %s", channel, message)
+	identifier, err := s.sendMessageType(channel, message, false)
+	return identifier, err
+}
+
+func (s *SlackApp) sendAction(channel, message string) (string, error) {
+	log.Printf("Sending action to %s: %s", channel, message)
+	identifier, err := s.sendMessageType(channel, "_"+message+"_", true)
+	return identifier, err
+}
+
+func (s *SlackApp) replyToMessageIdentifier(channel, message, identifier string) (string, error) {
+	nick := s.config.Get("Nick", "bot")
+	icon := s.config.Get("IconURL", "https://placekitten.com/128/128")
+
+	resp, err := http.PostForm("https://slack.com/api/chat.postMessage",
+		url.Values{"token": {s.token},
+			"username":  {nick},
+			"icon_url":  {icon},
+			"channel":   {channel},
+			"text":      {message},
+			"thread_ts": {identifier},
+		})
+
+	if err != nil {
+		err := fmt.Errorf("Error sending Slack reply: %s", err)
+		return "", err
+	}
+
+	body, err := ioutil.ReadAll(resp.Body)
+	resp.Body.Close()
+	if err != nil {
+		err := fmt.Errorf("Error reading Slack API body: %s", err)
+		return "", err
+	}
+
+	log.Println(string(body))
+
+	type MessageResponse struct {
+		OK        bool   `json:"ok"`
+		Timestamp string `json:"ts"`
+	}
+
+	var mr MessageResponse
+	err = json.Unmarshal(body, &mr)
+	if err != nil {
+		err := fmt.Errorf("Error parsing message response: %s", err)
+		return "", err
+	}
+
+	if !mr.OK {
+		return "", fmt.Errorf("Got !OK from slack message response")
+	}
+
+	return mr.Timestamp, err
+}
+
+func (s *SlackApp) replyToMessage(channel, message string, replyTo msg.Message) (string, error) {
+	return s.replyToMessageIdentifier(channel, message, replyTo.AdditionalData["RAW_SLACK_TIMESTAMP"])
+}
+
+func (s *SlackApp) react(channel, reaction string, message msg.Message) (string, error) {
+	log.Printf("Reacting in %s: %s", channel, reaction)
+	resp, err := http.PostForm("https://slack.com/api/reactions.add",
+		url.Values{"token": {s.token},
+			"name":      {reaction},
+			"channel":   {channel},
+			"timestamp": {message.AdditionalData["RAW_SLACK_TIMESTAMP"]}})
+	if err != nil {
+		err := fmt.Errorf("reaction failed: %s", err)
+		return "", err
+	}
+	return "", checkReturnStatus(resp)
+}
+
+func (s *SlackApp) edit(channel, newMessage, identifier string) (string, error) {
+	log.Printf("Editing in (%s) %s: %s", identifier, channel, newMessage)
+	resp, err := http.PostForm("https://slack.com/api/chat.update",
+		url.Values{"token": {s.token},
+			"channel": {channel},
+			"text":    {newMessage},
+			"ts":      {identifier}})
+	if err != nil {
+		err := fmt.Errorf("edit failed: %s", err)
+		return "", err
+	}
+	return "", checkReturnStatus(resp)
+}
+
+func (s *SlackApp) GetEmojiList() map[string]string {
+	return s.emoji
+}
+
+func (s *SlackApp) populateEmojiList() {
+	resp, err := http.PostForm("https://slack.com/api/emoji.list",
+		url.Values{"token": {s.token}})
+	if err != nil {
+		log.Printf("Error retrieving emoji list from Slack: %s", err)
+		return
+	}
+
+	body, err := ioutil.ReadAll(resp.Body)
+	resp.Body.Close()
+	if err != nil {
+		log.Fatalf("Error reading Slack API body: %s", err)
+	}
+
+	type EmojiListResponse struct {
+		OK    bool              `json:"ok"`
+		Emoji map[string]string `json:"emoji"`
+	}
+
+	var list EmojiListResponse
+	err = json.Unmarshal(body, &list)
+	if err != nil {
+		log.Fatalf("Error parsing emoji list: %s", err)
+	}
+	s.emoji = list.Emoji
+}
+
+// I think it's horseshit that I have to do this
+func slackTStoTime(t string) time.Time {
+	ts := strings.Split(t, ".")
+	sec, _ := strconv.ParseInt(ts[0], 10, 64)
+	nsec, _ := strconv.ParseInt(ts[1], 10, 64)
+	return time.Unix(sec, nsec)
+}
+
+func checkReturnStatus(response *http.Response) error {
+	type Response struct {
+		OK bool `json:"ok"`
+	}
+
+	body, err := ioutil.ReadAll(response.Body)
+	response.Body.Close()
+	if err != nil {
+		err := fmt.Errorf("Error reading Slack API body: %s", err)
+		return err
+	}
+
+	var resp Response
+	err = json.Unmarshal(body, &resp)
+	if err != nil {
+		err := fmt.Errorf("Error parsing message response: %s", err)
+		return err
+	}
+	return nil
+}
+
+var urlDetector = regexp.MustCompile(`<(.+)://([^|^>]+).*>`)
+
+// Convert a slackMessage to a msg.Message
+func (s *SlackApp) buildMessage(m *slackevents.MessageEvent) msg.Message {
+	text := html.UnescapeString(m.Text)
+
+	text = fixText(s.getUser, text)
+
+	isCmd, text := bot.IsCmd(s.config, text)
+
+	isAction := m.SubType == "me_message"
+
+	u, _ := s.getUser(m.User)
+	if m.Username != "" {
+		u = m.Username
+	}
+
+	tstamp := slackTStoTime(m.TimeStamp)
+
+	return msg.Message{
+		User: &user.User{
+			ID:   m.User,
+			Name: u,
+		},
+		Body:    text,
+		Raw:     m.Text,
+		Channel: m.Channel,
+		Command: isCmd,
+		Action:  isAction,
+		Time:    tstamp,
+		AdditionalData: map[string]string{
+			"RAW_SLACK_TIMESTAMP": m.TimeStamp,
+		},
+	}
+}
+
+func (s *SlackApp) buildLightReplyMessage(m *slackevents.MessageEvent) msg.Message {
+	text := html.UnescapeString(m.Text)
+
+	text = fixText(s.getUser, text)
+
+	isCmd, text := bot.IsCmd(s.config, text)
+
+	isAction := m.SubType == "me_message"
+
+	u, _ := s.getUser(m.User)
+	if m.Username != "" {
+		u = m.Username
+	}
+
+	tstamp := slackTStoTime(m.TimeStamp)
+
+	return msg.Message{
+		User: &user.User{
+			ID:   m.User,
+			Name: u,
+		},
+		Body:    text,
+		Raw:     m.Text,
+		Channel: m.Channel,
+		Command: isCmd,
+		Action:  isAction,
+		Time:    tstamp,
+		AdditionalData: map[string]string{
+			"RAW_SLACK_TIMESTAMP": m.TimeStamp,
+		},
+	}
+}
+
+// Get username for Slack user ID
+func (s *SlackApp) getUser(id string) (string, bool) {
+	if name, ok := s.users[id]; ok {
+		return name, true
+	}
+
+	log.Printf("User %s not already found, requesting info", id)
+	u, err := s.api.GetUserInfo(id)
+	if err != nil {
+		return "UNKNOWN", false
+	}
+	s.users[id] = u.Name
+	return s.users[id], true
+}
+
+// Who gets usernames out of a channel
+func (s *SlackApp) Who(id string) []string {
+	log.Println("Who is queried for ", id)
+	// Not super sure this is the correct call
+	members, err := s.api.GetUserGroupMembers(id)
+	if err != nil {
+		log.Println(err)
+		return []string{}
+	}
+	return members
+}

go.mod

@@ -12,6 +12,8 @@ require (
 	github.com/mitchellh/mapstructure v1.1.2 // indirect
 	github.com/mmcdole/gofeed v1.0.0-beta2
 	github.com/mmcdole/goxpp v0.0.0-20181012175147-0068e33feabf // indirect
+	github.com/nlopes/slack v0.5.0
+	github.com/pkg/errors v0.8.1 // indirect
 	github.com/robertkrimen/otto v0.0.0-20180617131154-15f95af6e78d // indirect
 	github.com/stretchr/objx v0.1.1 // indirect
 	github.com/stretchr/testify v1.3.0

go.sum

@@ -26,6 +26,10 @@ github.com/mmcdole/gofeed v1.0.0-beta2 h1:CjQ0ADhAwNSb08zknAkGOEYqr8zfZKfrzgk9Bx
 github.com/mmcdole/gofeed v1.0.0-beta2/go.mod h1:/BF9JneEL2/flujm8XHoxUcghdTV6vvb3xx/vKyChFU=
 github.com/mmcdole/goxpp v0.0.0-20181012175147-0068e33feabf h1:sWGE2v+hO0Nd4yFU/S/mDBM5plIU8v/Qhfz41hkDIAI=
 github.com/mmcdole/goxpp v0.0.0-20181012175147-0068e33feabf/go.mod h1:pasqhqstspkosTneA62Nc+2p9SOBBYAPbnmRRWPQ0V8=
+github.com/nlopes/slack v0.5.0 h1:NbIae8Kd0NpqaEI3iUrsuS0KbcEDhzhc939jLW5fNm0=
+github.com/nlopes/slack v0.5.0/go.mod h1:jVI4BBK3lSktibKahxBF74txcK2vyvkza1z/+rRnVAM=
+github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
+github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/robertkrimen/otto v0.0.0-20180617131154-15f95af6e78d h1:1VUlQbCfkoSGv7qP7Y+ro3ap1P1pPZxgdGVqiTVy5C4=

main.go

@@ -10,7 +10,9 @@ import (
 
 	"github.com/velour/catbase/bot"
 	"github.com/velour/catbase/config"
-	"github.com/velour/catbase/irc"
+	"github.com/velour/catbase/connectors/irc"
+	"github.com/velour/catbase/connectors/slack"
+	"github.com/velour/catbase/connectors/slackapp"
 	"github.com/velour/catbase/plugins/admin"
 	"github.com/velour/catbase/plugins/babbler"
 	"github.com/velour/catbase/plugins/beers"
@@ -35,7 +37,6 @@ import (
 	"github.com/velour/catbase/plugins/twitch"
 	"github.com/velour/catbase/plugins/your"
 	"github.com/velour/catbase/plugins/zork"
-	"github.com/velour/catbase/slack"
 )
 
 var (
@@ -67,11 +68,13 @@ func main() {
 
 	var client bot.Connector
 
-	switch c.Get("type", "slack") {
+	switch c.Get("type", "slackapp") {
 	case "irc":
 		client = irc.New(c)
 	case "slack":
 		client = slack.New(c)
+	case "slackapp":
+		client = slackapp.New(c)
 	default:
 		log.Fatalf("Unknown connection type: %s", c.Get("type", "UNSET"))
 	}

plugins/twitch/twitch.go

@@ -135,6 +135,10 @@ func (p *TwitchPlugin) help(kind bot.Kind, message msg.Message, args ...interfac
 
 func (p *TwitchPlugin) twitchLoop(channel string) {
 	frequency := p.config.GetInt("Twitch.Freq", 60)
+	if p.config.Get("twitch.clientid", "") == "" || p.config.Get("twitch.authorization", "") == "" {
+		log.Println("Disabling twitch autochecking.")
+		return
+	}
 
 	log.Println("Checking every ", frequency, " seconds")