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construct/include/ircd/m/rooms.h

109 lines
3.5 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 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.
#pragma once
#define HAVE_IRCD_M_ROOMS_H
/// Convenience iterface for rooms; utilities for the server's collection of
/// rooms and some rooms list related linkages.
///
namespace ircd::m::rooms
{
struct each_opts;
bool is_public(const room::id &);
size_t count_public(const string_view &server = {});
bool for_each(const each_opts &);
template<class... args> bool for_each(args&&...);
// Linkage to utils that build a publicrooms summary from room state.
void summary_chunk(const m::room &, json::stack::object &chunk);
json::object summary_chunk(const m::room &, const mutable_buffer &out);
event::id::buf summary_set(const m::room::id &, const json::object &summary);
event::id::buf summary_set(const m::room &);
event::id::buf summary_del(const m::room &);
}
/// Arguments structure to rooms::for_each(). This reduces the API surface to
/// handle a rich set of ways to iterate over the rooms. Several convenience
/// constructors based on common usage are provided; note that these are not
/// the only options patterns.
struct ircd::m::rooms::each_opts
{
/// If set: select rooms for this user.
m::user user;
/// If user is set, and this is set: select the membership that user
/// has in the room.
string_view membership;
/// If set, seek to this room_id or lower-bound to the closest room_id.
string_view key;
/// All public rooms only; key may be a server hostname or room_id.
/// - for server hostname: iterates known rooms from that server.
/// - for room_id: starts iteration from that (or closest) room_id
/// which can be used as a since/pagination token.
bool public_rooms {false};
/// Principal closure for results; invoked synchronously during the call;
/// for-each protocol: return true to continue, false to break.
room::id::closure_bool closure;
/// Alternative closure when selecting a user.
user::rooms::closure_bool user_closure;
each_opts(room::id::closure_bool);
each_opts(const string_view &key, room::id::closure_bool);
each_opts(const m::user &user, user::rooms::closure_bool);
each_opts(const m::user &user, const string_view &membership, user::rooms::closure_bool);
each_opts() = default;
};
inline
ircd::m::rooms::each_opts::each_opts(room::id::closure_bool closure)
:closure{std::move(closure)}
{}
inline
ircd::m::rooms::each_opts::each_opts(const string_view &key,
room::id::closure_bool closure)
:key{key}
,closure{std::move(closure)}
{}
inline
ircd::m::rooms::each_opts::each_opts(const m::user &user,
user::rooms::closure_bool user_closure)
:user{user}
,user_closure{std::move(user_closure)}
{}
inline
ircd::m::rooms::each_opts::each_opts(const m::user &user,
const string_view &membership,
user::rooms::closure_bool user_closure)
:user{user}
,membership{membership}
,user_closure{std::move(user_closure)}
{}
template<class... args>
bool
ircd::m::rooms::for_each(args&&... a)
{
const each_opts opts
{
std::forward<args>(a)...
};
return for_each(opts);
}