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construct/matrix/room_messages.cc

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// The Construct
//
// Copyright (C) The Construct Developers, Authors & Contributors
// Copyright (C) 2016-2022 Jason Volk <jason@zemos.net>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice is present in all copies. The
// full license for this software is available in the LICENSE file.
decltype(ircd::m::room::messages::fopts)
ircd::m::room::messages::fopts
{
event::keys::include
{
"content",
},
};
bool
ircd::m::room::messages::for_each(const closure &closure)
const
{
event::fetch event{fopts}, replace{fopts};
return events.for_each([this, &closure, &event, &replace]
(const string_view &type, const uint64_t &depth, event::idx event_idx)
{
assert(type == "m.room.message");
if(!redacted && m::redacted(event_idx))
return true;
if(!seek(std::nothrow, event, event_idx))
return true;
room::message msg
{
json::get<"content"_>(event)
};
// Don't show messages which edit other messages, since we will or
// already have rendered it at the edited message, if we have it,
// otherwise ignored.
if(msg.replace_event())
return true;
m::replace(msg, replace, event_idx);
return closure(msg, depth, event_idx);
});
}
bool
ircd::m::replace(room::message &msg,
event::fetch &replace,
const event::idx &event_idx)
{
// Find the latest edit of this; otherwise stick with the original.
const m::relates relates
{
.refs = event_idx,
.match_sender = true,
};
const event::idx replace_idx
{
relates.latest("m.replace")
};
if(!replace_idx)
return false;
if(!seek(std::nothrow, replace, replace_idx))
return false;
const json::object replace_content
{
json::get<"content"_>(replace)
};
const json::object new_content
{
replace_content.get("m.new_content")
};
// XXX When m.new_content is undefined the edit does not take place.
if(!new_content && !replace_content.has("m.new_content"))
return false;
// If the content was replaced msg has to be updated.
msg = new_content;
return true;
}