daemon: implements post office

kordophoned/src/daemon/events.rs

@@ -1,4 +1,6 @@
 use tokio::sync::oneshot;
+use uuid::Uuid;
+
 use kordophone_db::models::{Conversation, Message};
 use crate::daemon::settings::Settings;
 
@@ -33,6 +35,13 @@ pub enum Event {
     /// - last_message_id: (optional) The ID of the last message to get. If None, all messages are returned.
     GetMessages(String, Option<String>, Reply<Vec<Message>>),
 
+    /// Enqueues a message to be sent to the server.
+    /// Parameters: 
+    /// - conversation_id: The ID of the conversation to send the message to.
+    /// - text: The text of the message to send.
+    /// - reply: The outgoing message ID (not the server-assigned message ID).
+    SendMessage(String, String, Reply<Uuid>),
+
     /// Delete all conversations from the database.
     DeleteAllConversations(Reply<()>),
 }