feat: support more interactive types

message/interactive.go

@@ -0,0 +1,32 @@
+package message
+
+type InteractiveReplyButtonsOpts struct {
+	Header  InteractiveHeader
+	Body    string
+	Buttons []Reply
+}
+
+func NewInteractiveReplyButtons(to string, opts InteractiveReplyButtonsOpts) Envelope {
+	buttons := make([]Button, len(opts.Buttons))
+	for i, b := range opts.Buttons {
+		buttons[i] = Button{
+			Type:  "reply",
+			Reply: b,
+		}
+	}
+
+	return Envelope{
+		MessagingProduct: "whatsapp",
+		RecipientType:    "individual",
+		To:               to,
+		Type:             "interactive",
+		Interactive: &Interactive{
+			Header: opts.Header,
+			Body:   TextObject{Text: opts.Body},
+			Type:   "button",
+			Action: Action{
+				Buttons: &buttons,
+			},
+		},
+	}
+}

message/message.go

@@ -53,8 +53,19 @@ type InteractiveHeader struct {
 }
 
 type Action struct {
-	Name       string     `json:"name"`
-	Parameters Parameters `json:"parameters"`
+	Name       *string     `json:"name"`
+	Parameters *Parameters `json:"parameters,omitempty"`
+	Buttons    *[]Button   `json:"buttons,omitempty"`
+}
+
+type Button struct {
+	Type  string `json:"type"`
+	Reply Reply  `json:"reply"`
+}
+
+type Reply struct {
+	ID    string `json:"id"`
+	Title string `json:"title"`
 }
 
 type Parameters struct {
@@ -125,6 +136,7 @@ func NewImageLink(to string, opts NewImageLinkOpts) Envelope {
 }
 
 func NewInteractiveFlow(to string, opts NewFlowOpts) Envelope {
+	flow := "flow"
 	return Envelope{
 		MessagingProduct: "whatsapp",
 		RecipientType:    "individual",
@@ -136,8 +148,8 @@ func NewInteractiveFlow(to string, opts NewFlowOpts) Envelope {
 			Body:   opts.Body,
 			Footer: opts.Footer,
 			Action: Action{
-				Name: "flow",
-				Parameters: Parameters{
+				Name: &flow,
+				Parameters: &Parameters{
 					Mode:               opts.FlowMode,
 					FlowMessageVersion: "3",
 					FlowToken:          opts.FlowToken,