added multiple event listen support.

client.go

@@ -19,30 +19,30 @@ type Client struct {
 	HTTP   *http.Client
 
 	// Event Functions
-	OnReadyFunction         func()
-	OnMessageFunction       func(message *Message)
-	OnMessageUpdateFunction func(channel_id, message_id string, payload map[string]interface{})
-	OnMessageDeleteFunction func(channel_id, message_id string)
+	OnReadyFunctions         []func()
+	OnMessageFunctions       []func(message *Message)
+	OnMessageUpdateFunctions []func(channel_id, message_id string, payload map[string]interface{})
+	OnMessageDeleteFunctions []func(channel_id, message_id string)
 }
 
 // On ready event will run when websocket connection is started and bot is ready to work.
 func (c *Client) OnReady(fn func()) {
-	c.OnReadyFunction = fn
+	c.OnReadyFunctions = append(c.OnReadyFunctions, fn)
 }
 
 // On message event will run when someone sends a message.
 func (c *Client) OnMessage(fn func(message *Message)) {
-	c.OnMessageFunction = fn
+	c.OnMessageFunctions = append(c.OnMessageFunctions, fn)
 }
 
 // On message update event will run when someone updates a message.
 func (c *Client) OnMessageUpdate(fn func(channel_id, message_id string, payload map[string]interface{})) {
-	c.OnMessageUpdateFunction = fn
+	c.OnMessageUpdateFunctions = append(c.OnMessageUpdateFunctions, fn)
 }
 
 // On message delete event will run when someone deletes a message.
 func (c *Client) OnMessageDelete(fn func(channel_id, message_id string)) {
-	c.OnMessageDeleteFunction = fn
+	c.OnMessageDeleteFunctions = append(c.OnMessageDeleteFunctions, fn)
 }
 
 // Fetch a channel by Id.