mirror of
https://github.com/matrix-construct/construct
synced 2024-12-27 07:54:05 +01:00
146 lines
3.1 KiB
C++
146 lines
3.1 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2019 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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bool
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ircd::m::user::mitsein::has(const m::user &other,
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const string_view &membership)
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const
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{
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// Return true if broken out of loop.
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return !for_each(other, membership, []
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(const m::room &, const string_view &) noexcept
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{
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// Break out of loop at first shared room
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return false;
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});
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}
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size_t
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ircd::m::user::mitsein::count(const string_view &membership)
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const
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{
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size_t ret{0};
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for_each(membership, [&ret]
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(const m::user &) noexcept
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{
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++ret;
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return true;
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});
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return ret;
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}
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size_t
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ircd::m::user::mitsein::count(const m::user &user,
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const string_view &membership)
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const
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{
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size_t ret{0};
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for_each(user, membership, [&ret]
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(const m::room &, const string_view &) noexcept
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{
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++ret;
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return true;
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});
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return ret;
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}
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bool
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ircd::m::user::mitsein::for_each(const closure_bool &closure)
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const
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{
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return for_each(string_view{}, closure);
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}
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bool
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ircd::m::user::mitsein::for_each(const string_view &membership,
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const closure_bool &closure)
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const
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{
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const m::user::rooms rooms
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{
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user
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};
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// here we gooooooo :/
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///TODO: ideal: db schema
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///TODO: minimally: custom alloc?
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std::set<uint128_t, std::less<>> seen;
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return rooms.for_each(membership, rooms::closure_bool{[&membership, &closure, &seen]
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(const m::room &room, const string_view &_membership)
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{
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assert(_membership == membership);
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const m::room::members members
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{
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room
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};
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return members.for_each(membership, [&seen, &closure]
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(const user::id &other)
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{
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const auto hash
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{
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uint128_t(ircd::hash(other))
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| (uint128_t(ircd::hash(other.host())) << 64)
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};
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const bool inserted
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{
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seen.emplace(hash).second
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};
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return inserted?
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closure(m::user{other}):
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true;
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});
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}});
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}
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bool
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ircd::m::user::mitsein::for_each(const m::user &user,
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const rooms::closure_bool &closure)
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const
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{
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return for_each(user, string_view{}, closure);
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}
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bool
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ircd::m::user::mitsein::for_each(const m::user &user,
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const string_view &membership,
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const rooms::closure_bool &closure)
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const
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{
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const m::user::rooms our_rooms{this->user};
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const m::user::rooms their_rooms{user};
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const bool use_our
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{
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our_rooms.count() <= their_rooms.count()
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};
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const m::user::rooms &rooms
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{
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use_our? our_rooms : their_rooms
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};
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const string_view &test_key
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{
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use_our? user.user_id : this->user.user_id
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};
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return rooms.for_each(membership, rooms::closure_bool{[&membership, &closure, &test_key]
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(const m::room &room, const string_view &)
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{
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if(!room.has("m.room.member", test_key))
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return true;
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return closure(room, membership);
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}});
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}
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