add other FCM features

fcm.go

@@ -22,13 +22,90 @@ func newFCM(app *App) *FCM {
 	}
 }
 
-// SendToDevice Send Message to individual devices
+// SendToDevice Send Message to individual device
 // see https://firebase.google.com/docs/cloud-messaging/admin/send-messages#send_to_individual_devices
 func (fcm *FCM) SendToDevice(registrationToken string, payload Message) (*Response, error) {
 
-	// assign recipient with registrationToken
+	// assign recipient
 	payload.To = registrationToken
 
+	// flush other recipients
+	payload.RegistrationIDs = nil
+	payload.Condition = ""
+
+	// send request to Firebase
+	return fcm.sendFirebaseRequest(payload)
+}
+
+// SendToDevices Send multicast Message to devices
+// see https://firebase.google.com/docs/cloud-messaging/admin/send-messages#send_to_individual_devices
+func (fcm *FCM) SendToDevices(registrationTokens []string, payload Message) (*Response, error) {
+
+	// assign recipient
+	payload.RegistrationIDs = registrationTokens
+
+	// flush other recipients
+	payload.To = ""
+	payload.Condition = ""
+
+	// send request to Firebase
+	return fcm.sendFirebaseRequest(payload)
+}
+
+// SendToDeviceGroup Send Message to a device group
+// see https://firebase.google.com/docs/cloud-messaging/admin/send-messages#send_to_a_device_group
+func (fcm *FCM) SendToDeviceGroup(notificationKey string, payload Message) (*Response, error) {
+	return fcm.SendToDevice(notificationKey, payload)
+}
+
+// SendToTopic TODO NOT IMPLEMENTED
+// see https://firebase.google.com/docs/cloud-messaging/admin/send-messages#send_to_a_topic
+func (fcm *FCM) SendToTopic(notificationKey string, payload Message) (*Response, error) {
+	return fcm.SendToDevice(fmt.Sprint("/topic/", notificationKey), payload)
+}
+
+// SendToCondition Send a message to devices subscribed to the combination of topics
+// specified by the provided condition.
+// see https://firebase.google.com/docs/cloud-messaging/admin/send-messages#send_to_a_condition
+func (fcm *FCM) SendToCondition(condition string, payload Message) (*Response, error) {
+
+	// assign recipient
+	payload.Condition = condition
+
+	// flush other recipients
+	payload.To = ""
+	payload.RegistrationIDs = nil
+
+	// send request to Firebase
+	return fcm.sendFirebaseRequest(payload)
+}
+
+// SubscribeDeviceToTopic TODO NOT IMPLEMENTED
+// see https://firebase.google.com/docs/cloud-messaging/admin/manage-topic-subscriptions#subscribe_to_a_topic
+func (fcm *FCM) SubscribeDeviceToTopic(registrationToken string, topic string) (*Response, error) {
+	return nil, ErrNotImplemented
+}
+
+// SubscribeDevicesToTopic TODO NOT IMPLEMENTED
+// see https://firebase.google.com/docs/cloud-messaging/admin/manage-topic-subscriptions#subscribe_to_a_topic
+func (fcm *FCM) SubscribeDevicesToTopic(registrationTokens []string, topic string) (*Response, error) {
+	return nil, ErrNotImplemented
+}
+
+// UnSubscribeDeviceFromTopic TODO NOT IMPLEMENTED
+// see https://firebase.google.com/docs/cloud-messaging/admin/manage-topic-subscriptions#unsubscribe_from_a_topic
+func (fcm *FCM) UnSubscribeDeviceFromTopic(registrationToken string, topic string) (*Response, error) {
+	return nil, ErrNotImplemented
+}
+
+// UnSubscribeDevicesFromTopic TODO NOT IMPLEMENTED
+// see https://firebase.google.com/docs/cloud-messaging/admin/manage-topic-subscriptions#unsubscribe_from_a_topic
+func (fcm *FCM) UnSubscribeDevicesFromTopic(registrationTokens []string, topic string) (*Response, error) {
+	return nil, ErrNotImplemented
+}
+
+func (fcm *FCM) sendFirebaseRequest(payload Message) (*Response, error) {
+
 	// validate Message
 	if err := payload.Validate(); err != nil {
 		return nil, err
@@ -85,33 +162,3 @@ func (fcm *FCM) SendToDevice(registrationToken string, payload Message) (*Respon
 
 	return response, nil
 }
-
-// SendToDeviceGroup Send Message to a device group
-// see https://firebase.google.com/docs/cloud-messaging/admin/send-messages#send_to_a_device_group
-func (fcm *FCM) SendToDeviceGroup(notificationKey string, payload Message) (*Response, error) {
-	return nil, ErrNotImplemented
-}
-
-// SendToTopic TODO NOT IMPLEMENTED
-// see https://firebase.google.com/docs/cloud-messaging/admin/send-messages#send_to_a_topic
-func (fcm *FCM) SendToTopic(notificationKey string, payload Message) (*Response, error) {
-	return nil, ErrNotImplemented
-}
-
-// SendToCondition TODO NOT IMPLEMENTED
-// see https://firebase.google.com/docs/cloud-messaging/admin/send-messages#send_to_a_condition
-func (fcm *FCM) SendToCondition(condition string, payload Message) (*Response, error) {
-	return nil, ErrNotImplemented
-}
-
-// SubscribeDeviceToTopic TODO NOT IMPLEMENTED
-// see https://firebase.google.com/docs/cloud-messaging/admin/manage-topic-subscriptions#subscribe_to_a_topic
-func (fcm *FCM) SubscribeDeviceToTopic(registrationToken string, topic string) (*Response, error) {
-	return nil, ErrNotImplemented
-}
-
-// SubscribeDevicesToTopic TODO NOT IMPLEMENTED
-// see https://firebase.google.com/docs/cloud-messaging/admin/manage-topic-subscriptions#subscribe_to_a_topic
-func (fcm *FCM) SubscribeDevicesToTopic(registrationTokens []string, topic string) (*Response, error) {
-	return nil, ErrNotImplemented
-}