Moderation delay WIP (#132):

* mod_muc_moderation_delay, first shot.

prosody-modules/mod_muc_moderation_delay/mod_muc_moderation_delay.lua

@@ -0,0 +1,30 @@
+-- mod_muc_moderation_delay
+--
+-- SPDX-FileCopyrightText: 2024 John Livingston <https://www.john-livingston.fr/>
+-- SPDX-License-Identifier: AGPL-3.0-only
+--
+-- This file is AGPL-v3 licensed.
+-- Please see the Peertube livechat plugin copyright information.
+-- https://livingston.frama.io/peertube-plugin-livechat/credits/
+--
+
+local add_disco_form = module:require("config").add_disco_form;
+local config_submitted = module:require("config").config_submitted;
+local add_form_option = module:require("config").add_form_option;
+local handle_broadcast_message = module:require("delay").handle_broadcast_message;
+
+-- form_position: the position in the room config form (this value will be passed as priority for the "muc-config-form" hook).
+-- By default, field will be between muc#roomconfig_changesubject and muc#roomconfig_moderatedroom
+local form_position = module:get_option_number("moderation_delay_form_position") or 80-2;
+
+-- Plugin dependencies
+local mod_muc = module:depends "muc";
+
+-- muc-disco and muc-config to configure the feature:
+module:hook("muc-disco#info", add_disco_form);
+module:hook("muc-config-submitted/muc#roomconfig_moderation_delay", config_submitted);
+module:hook("muc-config-form", add_form_option, form_position);
+
+-- intercept muc-broadcast-message, and broadcast with delay if required.
+-- Priority is negative, as we want it to be the last handler.
+module:hook("muc-broadcast-message", handle_broadcast_message, -1000);