add call reject

Author: fengshunli

call.go

@@ -83,6 +83,11 @@ func (cli *Client) handleCallEvent(node *waBinary.Node) {
 			Reason:        cag.String("reason"),
 			Data:          &child,
 		})
+	case "reject":
+		cli.dispatchEvent(&events.CallReject{
+			BasicCallMeta: basicMeta,
+			Data:          &child,
+		})
 	default:
 		cli.dispatchEvent(&events.UnknownCallEvent{Node: node})
 	}

types/events/call.go

@@ -65,6 +65,12 @@ type CallTerminate struct {
 	Data   *waBinary.Node
 }
 
+// CallReject is sent when the other party rejects the call on WhatsApp.
+type CallReject struct {
+	types.BasicCallMeta
+	Data *waBinary.Node
+}
+
 // UnknownCallEvent is emitted when a call element with unknown content is received.
 type UnknownCallEvent struct {
 	Node *waBinary.Node