Add firebase support

server/message.go

@@ -1,18 +1,27 @@
 package server
 
-import "time"
+import (
+	"heckel.io/ntfy/util"
+	"time"
+)
 
 // List of possible events
 const (
 	openEvent      = "open"
 	keepaliveEvent = "keepalive"
-	messageEvent = "message"
+	messageEvent   = "message"
+)
+
+const (
+	messageIDLength = 10
 )
 
 // message represents a message published to a topic
 type message struct {
-	Time    int64  `json:"time"`            // Unix time in seconds
-	Event   string `json:"event,omitempty"` // One of the above
+	ID      string `json:"id"`    // Random message ID
+	Time    int64  `json:"time"`  // Unix time in seconds
+	Event   string `json:"event"` // One of the above
+	Topic   string `json:"topic"`
 	Message string `json:"message,omitempty"`
 }
 
@@ -20,25 +29,27 @@ type message struct {
 type messageEncoder func(msg *message) (string, error)
 
 // newMessage creates a new message with the current timestamp
-func newMessage(event string, msg string) *message {
+func newMessage(event, topic, msg string) *message {
 	return &message{
+		ID:      util.RandomString(messageIDLength),
 		Time:    time.Now().Unix(),
 		Event:   event,
+		Topic:   topic,
 		Message: msg,
 	}
 }
 
 // newOpenMessage is a convenience method to create an open message
-func newOpenMessage() *message {
-	return newMessage(openEvent, "")
+func newOpenMessage(topic string) *message {
+	return newMessage(openEvent, topic, "")
 }
 
 // newKeepaliveMessage is a convenience method to create a keepalive message
-func newKeepaliveMessage() *message {
-	return newMessage(keepaliveEvent, "")
+func newKeepaliveMessage(topic string) *message {
+	return newMessage(keepaliveEvent, topic, "")
 }
 
 // newDefaultMessage is a convenience method to create a notification message
-func newDefaultMessage(msg string) *message {
-	return newMessage(messageEvent, msg)
+func newDefaultMessage(topic, msg string) *message {
+	return newMessage(messageEvent, topic, msg)
 }