service backend

api/proto/envelope.proto

@@ -0,0 +1,22 @@
+syntax = "proto3";
+
+import "google/protobuf/timestamp.proto";
+
+option go_package = "github.com/tech/sendico/pkg/generated/gmessaging";
+
+message NotificationEvent {
+    string type = 1;   // NotificationType
+    string action = 2; // NotificationAction
+}
+
+message EventMetadata {
+    string sender = 1;
+    string message_id = 2;          
+    google.protobuf.Timestamp timestamp = 3;
+}
+
+message Envelope {
+    NotificationEvent event = 2;    // Notification event with type and action
+    bytes message_data = 3;         // Serialized Protobuf message data
+    EventMetadata metadata = 4;     // Metadata about the event
+}