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local next = next;
local pairs = pairs;
local setmetatable = setmetatable;
local st = require "util.stanza";
local util = module:require "muc/util";
local function get_filtered_presence(stanza)
return util.filter_muc_x(st.clone(stanza));
end
local occupant_mt = {};
occupant_mt.__index = occupant_mt;
local function new_occupant(bare_real_jid, nick)
return setmetatable({
bare_jid = bare_real_jid;
nick = nick; -- in-room jid
sessions = {}; -- hash from real_jid to presence stanzas. stanzas should not be modified
role = nil;
jid = nil; -- Primary session
}, occupant_mt);
end
-- Deep copy an occupant
local function copy_occupant(occupant)
local sessions = {};
for full_jid, presence_stanza in pairs(occupant.sessions) do
-- Don't keep unavailable presences, as they'll accumulate; unless they're the primary session
if presence_stanza.attr.type ~= "unavailable" or full_jid == occupant.jid then
sessions[full_jid] = presence_stanza;
end
end
return setmetatable({
bare_jid = occupant.bare_jid;
nick = occupant.nick;
sessions = sessions;
role = occupant.role;
jid = occupant.jid;
}, occupant_mt);
end
-- finds another session to be the primary (there might not be one)
function occupant_mt:choose_new_primary()
for jid, pr in self:each_session() do
if pr.attr.type == nil then
return jid;
end
end
return nil;
end
function occupant_mt:set_session(real_jid, presence_stanza, replace_primary)
local pr = get_filtered_presence(presence_stanza);
pr.attr.from = self.nick;
pr.attr.to = real_jid;
self.sessions[real_jid] = pr;
if replace_primary then
self.jid = real_jid;
elseif self.jid == nil or (pr.attr.type == "unavailable" and self.jid == real_jid) then
-- Only leave an unavailable presence as primary when there are no other options
self.jid = self:choose_new_primary() or real_jid;
end
end
function occupant_mt:remove_session(real_jid)
-- Delete original session
self.sessions[real_jid] = nil;
if self.jid == real_jid then
self.jid = self:choose_new_primary();
end
end
function occupant_mt:each_session()
return pairs(self.sessions)
end
function occupant_mt:get_presence(real_jid)
return self.sessions[real_jid or self.jid]
end
return {
new = new_occupant;
copy = copy_occupant;
mt = occupant_mt;
}
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