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modules/m_room: Add prev_events generator.

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This commit is contained in:
Jason Volk 2018-06-01 16:10:54 -07:00
parent 76c716f0e9
commit b8267feaac
1 changed files with 77 additions and 0 deletions
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77
modules/m_room.cc
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@ -16,6 +16,83 @@ IRCD_MODULE
"Matrix state library; modular components."
};
extern "C" int64_t
make_prev(const m::room &room,
json::stack::array &out,
size_t limit,
bool need_tophead = true)
{
const auto top_head
{
need_tophead?
m::top(std::nothrow, room.room_id):
std::tuple<m::id::event::buf, int64_t, m::event::idx>{}
};
int64_t depth{-1};
m::event::fetch event;
const m::room::head head{room};
head.for_each(m::room::head::closure_bool{[&]
(const m::event::idx &idx, const m::event::id &event_id)
{
seek(event, idx, std::nothrow);
if(!event.valid)
return true;
if(need_tophead)
if(json::get<"event_id"_>(event) == std::get<0>(top_head))
need_tophead = false;
depth = std::max(json::get<"depth"_>(event), depth);
json::stack::array prev{out};
prev.append(event_id);
{
json::stack::object hash{prev};
json::stack::member will
{
hash, "willy", "nilly"
};
}
return --limit - need_tophead > 0;
}});
if(need_tophead)
{
depth = std::get<1>(top_head);
json::stack::array prev{out};
prev.append(std::get<0>(top_head));
{
json::stack::object hash{prev};
json::stack::member will
{
hash, "willy", "nilly"
};
}
}
return depth;
}
extern "C" std::pair<json::array, int64_t>
make_prev__buf(const m::room &room,
const mutable_buffer &buf,
const size_t &limit,
const bool &need_tophead)
{
int64_t depth;
json::stack ps{buf};
{
json::stack::array top{ps};
depth = make_prev(room, top, limit, need_tophead);
}
return
{
json::array{ps.completed()}, depth
};
}
extern "C" std::pair<bool, int64_t>
is_complete(const m::room &room)
{