From 4e209855defc243f5eedf9668f64eb8c29bb64be Mon Sep 17 00:00:00 2001
From: Jason Volk <jason@zemos.net>
Date: Fri, 17 Feb 2023 14:26:14 -0800
Subject: [PATCH] modules/m_room_member: Add configurable to delist public room
 after last local user leaves.

---
 modules/m_room_member.cc | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/modules/m_room_member.cc b/modules/m_room_member.cc
index 4f67b1fc9..0c6778e5f 100644
--- a/modules/m_room_member.cc
+++ b/modules/m_room_member.cc
@@ -10,6 +10,7 @@
 
 namespace ircd::m
 {
+	extern conf::item<bool> room_member_leave_delist_enable;
 	extern conf::item<bool> room_member_leave_purge_enable;
 	static void room_member_leave_purge(const event &, vm::eval &);
 	extern m::hookfn<vm::eval &> room_member_leave_purge_hookfn;
@@ -658,6 +659,17 @@ ircd::m::room_member_leave_purge_enable
 	{ "help",     "Erase the room after the last local users leaves."  },
 };
 
+decltype(ircd::m::room_member_leave_delist_enable)
+ircd::m::room_member_leave_delist_enable
+{
+	{ "name",     "ircd.m.room.member.leave.delist.enable" },
+	{ "default",  true                                     },
+	{ "help",
+		"Remove the room from the directory after the last "
+		"local users leaves."
+	},
+};
+
 void
 ircd::m::room_member_leave_purge(const event &event,
                                  vm::eval &eval)
@@ -666,6 +678,7 @@ ircd::m::room_member_leave_purge(const event &event,
 	{
 		false
 		|| room_member_leave_purge_enable
+		|| room_member_leave_delist_enable
 	};
 
 	if(!enabled)
@@ -687,6 +700,19 @@ ircd::m::room_member_leave_purge(const event &event,
 	if(local_joined(room) > 0)
 		return;
 
+	if(room_member_leave_delist_enable && rooms::summary::has(room, origin(my())))
+	{
+		log::logf
+		{
+			log, log::level::DEBUG,
+			"Delisting %s after %s has left the room.",
+			string_view{room.room_id},
+			string_view{target},
+		};
+
+		m::rooms::summary::del(room, origin(my()));
+	}
+
 	if(room_member_leave_purge_enable)
 	{
 		log::logf