Add Slack support

1 files changed, 93 insertions, 0 deletions

diff --git a/vendor/github.com/nlopes/slack/websocket.go b/vendor/github.com/nlopes/slack/websocket.go
new file mode 100644
index 00000000..6eb09263
--- /dev/null
+++ b/vendor/github.com/nlopes/slack/websocket.go
@@ -0,0 +1,93 @@
+package slack
+
+import (
+	"encoding/json"
+	"errors"
+	"time"
+
+	"golang.org/x/net/websocket"
+)
+
+const (
+	// MaxMessageTextLength is the current maximum message length in number of characters as defined here
+	// https://api.slack.com/rtm#limits
+	MaxMessageTextLength = 4000
+)
+
+// RTM represents a managed websocket connection. It also supports
+// all the methods of the `Client` type.
+//
+// Create this element with Client's NewRTM().
+type RTM struct {
+	idGen IDGenerator
+	pings map[int]time.Time
+
+	// Connection life-cycle
+	conn             *websocket.Conn
+	IncomingEvents   chan RTMEvent
+	outgoingMessages chan OutgoingMessage
+	killChannel      chan bool
+	forcePing        chan bool
+	rawEvents        chan json.RawMessage
+	wasIntentional   bool
+	isConnected      bool
+
+	// Client is the main API, embedded
+	Client
+	websocketURL string
+
+	// UserDetails upon connection
+	info *Info
+}
+
+// NewRTM returns a RTM, which provides a fully managed connection to
+// Slack's websocket-based Real-Time Messaging protocol.
+func newRTM(api *Client) *RTM {
+	return &RTM{
+		Client:           *api,
+		IncomingEvents:   make(chan RTMEvent, 50),
+		outgoingMessages: make(chan OutgoingMessage, 20),
+		pings:            make(map[int]time.Time),
+		isConnected:      false,
+		wasIntentional:   true,
+		killChannel:      make(chan bool),
+		forcePing:        make(chan bool),
+		rawEvents:        make(chan json.RawMessage),
+		idGen:            NewSafeID(1),
+	}
+}
+
+// Disconnect and wait, blocking until a successful disconnection.
+func (rtm *RTM) Disconnect() error {
+	if !rtm.isConnected {
+		return errors.New("Invalid call to Disconnect - Slack API is already disconnected")
+	}
+	rtm.killChannel <- true
+	return nil
+}
+
+// Reconnect only makes sense if you've successfully disconnectd with Disconnect().
+func (rtm *RTM) Reconnect() error {
+	logger.Println("RTM::Reconnect not implemented!")
+	return nil
+}
+
+// GetInfo returns the info structure received when calling
+// "startrtm", holding all channels, groups and other metadata needed
+// to implement a full chat client. It will be non-nil after a call to
+// StartRTM().
+func (rtm *RTM) GetInfo() *Info {
+	return rtm.info
+}
+
+// SendMessage submits a simple message through the websocket.  For
+// more complicated messages, use `rtm.PostMessage` with a complete
+// struct describing your attachments and all.
+func (rtm *RTM) SendMessage(msg *OutgoingMessage) {
+	if msg == nil {
+		rtm.Debugln("Error: Attempted to SendMessage(nil)")
+		return
+	}
+
+	rtm.outgoingMessages <- *msg
+}