Merge pull request #16 from x1um1n/patch-1

Add support for actions, to enable use of buttons

Author: ashwanthkumar

README.md

@@ -16,6 +16,8 @@ func main() {
 
     attachment1 := slack.Attachment {}
     attachment1.AddField(slack.Field { Title: "Author", Value: "Ashwanth Kumar" }).AddField(slack.Field { Title: "Status", Value: "Completed" })
+    attachment1.AddAction(slack.Action { Type: "button", Text: "Book flights 🛫", Url: "https://flights.example.com/book/r123456", Style: "primary" })
+    attachment1.AddAction(slack.Action { Type: "button", Text: "Cancel", Url: "https://flights.example.com/abandon/r123456", Style: "danger" })
     payload := slack.Payload {
       Text: "Hello from <https://github.com/ashwanthkumar/slack-go-webhook|slack-go-webhook>, a Go-Lang library to send slack webhook messages.\n<https://golangschool.com/wp-content/uploads/golang-teach.jpg|golang-img>",
       Username: "robot",

main.go

@@ -12,6 +12,13 @@ type Field struct {
 	Short bool   `json:"short"`
 }
 
+type Action struct {
+	Type	string   `json:"type"`
+	Text	string   `json:"text"`
+	Url 	string   `json:"url"`
+	Style 	string   `json:"style"`
+}
+
 type Attachment struct {
 	Fallback   *string   `json:"fallback"`
 	Color      *string   `json:"color"`
@@ -28,6 +35,8 @@ type Attachment struct {
 	FooterIcon *string   `json:"footer_icon"`
 	Timestamp  *int64    `json:"ts"`
 	MarkdownIn *[]string `json:"mrkdwn_in"`
+	Actions	   []*Action `json:"actions"`
+	CallbackID *string   `json:"callback_id"`
 }
 
 type Payload struct {
@@ -49,6 +58,11 @@ func (attachment *Attachment) AddField(field Field) *Attachment {
 	return attachment
 }
 
+func (attachment *Attachment) AddAction(action Action) *Attachment {
+	attachment.Actions = append(attachment.Actions, &action)
+	return attachment
+}
+
 func redirectPolicyFunc(req gorequest.Request, via []gorequest.Request) error {
 	return fmt.Errorf("Incorrect token (redirection)")
 }