From 9327333813cbcb538f6757934be42d59c34f86d6 Mon Sep 17 00:00:00 2001
From: Přemysl Eric Janouch <p@janouch.name>
Date: Tue, 20 Sep 2022 17:14:55 +0200
Subject: xC/xP: show own user's info in frontends

---
 xC-proto        | 16 ++++++++++++++--
 xC.c            | 37 ++++++++++++++++++++++++++++---------
 xP/public/xP.js | 15 +++++++++++----
 3 files changed, 53 insertions(+), 15 deletions(-)

diff --git a/xC-proto b/xC-proto
index 03c40d7..ea39b86 100644
--- a/xC-proto
+++ b/xC-proto
@@ -155,13 +155,25 @@ struct EventMessage {
 
 	case SERVER_UPDATE:
 		string server_name;
-		enum ServerState {
+		union ServerData switch (enum ServerState {
 			DISCONNECTED,
 			CONNECTING,
 			CONNECTED,
 			REGISTERED,
 			DISCONNECTING,
-		} state;
+		} state) {
+		case DISCONNECTED:
+		case CONNECTING:
+		case CONNECTED:
+			void;
+		case REGISTERED:
+			string user;
+			string user_mode;
+		// Theoretically, we could also send user information in this state,
+		// but we'd have to duplicate both fields.
+		case DISCONNECTING:
+			void;
+		} data;
 	case SERVER_RENAME:
 		// Buffers aren't sent updates for in this circumstance,
 		// as that wouldn't be sufficiently atomic anyway.
diff --git a/xC.c b/xC.c
index 22252ff..ecb3c2d 100644
--- a/xC.c
+++ b/xC.c
@@ -3067,6 +3067,9 @@ relay_server_state_for_server (struct server *s)
 	return 0;
 }
 
+// TODO: Consider pushing this whole block of code further down.
+static char *irc_to_utf8 (const char *text);
+
 static void
 relay_prepare_server_update (struct app_context *ctx, struct server *s)
 {
@@ -3074,7 +3077,17 @@ relay_prepare_server_update (struct app_context *ctx, struct server *s)
 	struct relay_event_data_server_update *e = &m->data.server_update;
 	e->event = RELAY_EVENT_SERVER_UPDATE;
 	e->server_name = str_from_cstr (s->name);
-	e->state = relay_server_state_for_server (s);
+	e->data.state = relay_server_state_for_server (s);
+	if (s->state == IRC_REGISTERED)
+	{
+		char *user_utf8 = irc_to_utf8 (s->irc_user->nickname);
+		e->data.registered.user = str_from_cstr (user_utf8);
+		free (user_utf8);
+
+		char *user_mode_utf8 = irc_to_utf8 (s->irc_user_mode.str);
+		e->data.registered.user_mode = str_from_cstr (user_mode_utf8);
+		free (user_mode_utf8);
+	}
 }
 
 static void
@@ -7071,6 +7084,9 @@ irc_handle_mode_user (struct server *s, char **params)
 {
 	struct mode_processor p = { .s = s };
 	mode_processor_run (&p, params, mode_processor_apply_user);
+
+	relay_prepare_server_update (s->ctx, s);
+	relay_broadcast (s->ctx);
 }
 
 // --- Output processing -------------------------------------------------------
@@ -7681,7 +7697,7 @@ irc_handle_nick (struct server *s, const struct irc_message *msg)
 	if (lexicographically_different)
 		hard_assert (!str_map_find (&s->irc_users, new_nickname));
 
-	// Now we can rename the PM buffer to reflect the new nickname
+	// Now we can rename everything to reflect the new nickname
 	if (pm_buffer)
 	{
 		str_map_set (&s->irc_buffer_map, user->nickname, NULL);
@@ -7692,8 +7708,17 @@ irc_handle_nick (struct server *s, const struct irc_message *msg)
 		free (x);
 	}
 
-	if (irc_is_this_us (s, msg->prefix))
+	str_map_set (&s->irc_users, user->nickname, NULL);
+	str_map_set (&s->irc_users, new_nickname, user);
+
+	cstr_set (&user->nickname, xstrdup (new_nickname));
+
+	// Finally broadcast the event to relay clients and secondary buffers
+	if (irc_is_this_us (s, new_nickname))
 	{
+		relay_prepare_server_update (s->ctx, s);
+		relay_broadcast (s->ctx);
+
 		log_nick_self (s, s->buffer, new_nickname);
 
 		// Log a message in all open buffers on this server
@@ -7717,12 +7742,6 @@ irc_handle_nick (struct server *s, const struct irc_message *msg)
 			log_nick (s, buffer, msg->prefix, new_nickname);
 		}
 	}
-
-	// Finally rename the user as it should be safe now
-	str_map_set (&s->irc_users, user->nickname, NULL);
-	str_map_set (&s->irc_users, new_nickname, user);
-
-	cstr_set (&user->nickname, xstrdup (new_nickname));
 }
 
 static void
diff --git a/xP/public/xP.js b/xP/public/xP.js
index 93fe642..144647e 100644
--- a/xP/public/xP.js
+++ b/xP/public/xP.js
@@ -388,7 +388,7 @@ rpcEventHandlers.set(Relay.Event.ServerUpdate, e => {
 	let s = servers.get(e.serverName)
 	if (s === undefined)
 		servers.set(e.serverName, (s = {}))
-	s.state = e.state
+	s.data = e.data
 })
 
 rpcEventHandlers.set(Relay.Event.ServerRename, e => {
@@ -693,14 +693,21 @@ let Status = {
 
 let Prompt = {
 	view: vnode => {
-		// This should be handled differently, so don't mind the lookup.
 		let b = buffers.get(bufferCurrent)
 		if (b === undefined || b.server === undefined)
 			return
 
-		let state = b.server.state
+		if (b.server.data.user !== undefined) {
+			let user = b.server.data.user
+			if (b.server.data.userMode)
+				user += `(${b.server.data.userMode})`
+			return m('.prompt', {}, `${user}`)
+		}
+
+		// This might certainly be done more systematically.
+		let state = b.server.data.state
 		for (const s in Relay.ServerState)
-			if (Relay.ServerState[s] == b.server.state) {
+			if (Relay.ServerState[s] == state) {
 				state = s
 				break
 			}
-- 
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