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%% @doc Provide an interface for frontends (like graphql or ctl) to manage last activity. |
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-module(mod_last_api). |
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-export([get_last/1, set_last/3, count_active_users/2]). |
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-export([list_old_users/1, list_old_users/2, |
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remove_old_users/1, remove_old_users/2]). |
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-include("jlib.hrl"). |
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-include("mongoose.hrl"). |
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-type old_user() :: {jid:jid(), null | timestamp()}. |
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-type info() :: #{timestamp := mod_last:timestamp(), status := mod_last:status()}. |
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-type timestamp() :: mod_last:timestamp(). |
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-type status() :: mod_last:status(). |
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-type host_type() :: mongooseim:host_type(). |
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-define(USER_NOT_FOUND_RESULT(User, Server), |
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{user_does_not_exist, io_lib:format("User ~s@~s does not exist", [User, Server])}). |
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-define(DOMAIN_NOT_FOUND_RESULT, {domain_not_found, <<"Domain not found">>}). |
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-spec set_last(jid:jid(), timestamp(), status()) -> {ok, info()} | {user_does_not_exist, iolist()}. |
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set_last(#jid{luser = User, lserver = Server} = JID, Timestamp, Status) -> |
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case ejabberd_auth:does_user_exist(JID) of |
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true -> |
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{ok, HostType} = mongoose_domain_api:get_host_type(Server), |
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ok = mod_last:store_last_info(HostType, User, Server, Timestamp, Status), |
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{ok, #{timestamp => Timestamp, status => Status}}; |
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false -> |
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?USER_NOT_FOUND_RESULT(User, Server) |
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end. |
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-spec get_last(jid:jid()) -> |
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{ok, info()} | {last_not_found | user_does_not_exist, iodata()}. |
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get_last(#jid{luser = User, lserver = Server} = JID) -> |
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case ejabberd_auth:does_user_exist(JID) of |
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true -> |
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{ok, HostType} = mongoose_domain_api:get_host_type(Server), |
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case mod_last:get_last_info(HostType, User, Server) of |
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{ok, Timestamp, Status} -> |
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{ok, #{timestamp => Timestamp, status => Status}}; |
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not_found -> |
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{last_not_found, <<"Given user's last info not found">>} |
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end; |
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false -> |
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?USER_NOT_FOUND_RESULT(User, Server) |
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end. |
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-spec count_active_users(jid:server(), timestamp()) -> |
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{ok, non_neg_integer()} | {domain_not_found, binary()}. |
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count_active_users(Domain, Timestamp) -> |
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LDomain = jid:nameprep(Domain), |
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case mongoose_domain_api:get_host_type(LDomain) of |
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{ok, HostType} -> |
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{ok, mod_last:count_active_users(HostType, LDomain, Timestamp)}; |
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{error, not_found} -> |
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?DOMAIN_NOT_FOUND_RESULT |
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end. |
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-spec list_old_users(timestamp()) -> {ok, [old_user()]}. |
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list_old_users(Timestamp) -> |
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:-( |
OldUsers = lists:append([list_old_users(HostType, Domain, Timestamp) || |
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:-( |
HostType <- ?ALL_HOST_TYPES, |
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Domain <- mongoose_domain_api:get_domains_by_host_type(HostType)]), |
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{ok, OldUsers}. |
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-spec list_old_users(jid:server(), timestamp()) -> |
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{ok, [old_user()]} | {domain_not_found, binary()}. |
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list_old_users(Domain, Timestamp) -> |
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:-( |
LDomain = jid:nameprep(Domain), |
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case mongoose_domain_api:get_host_type(LDomain) of |
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{ok, HostType} -> |
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{ok, list_old_users(HostType, LDomain, Timestamp)}; |
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{error, not_found} -> |
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?DOMAIN_NOT_FOUND_RESULT |
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end. |
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-spec remove_old_users(timestamp()) -> {ok, [old_user()]}. |
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remove_old_users(Timestamp) -> |
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:-( |
{ok, OldUsers} = list_old_users(Timestamp), |
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ok = remove_users(OldUsers), |
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{ok, OldUsers}. |
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-spec remove_old_users(jid:server(), timestamp()) -> |
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{ok, [old_user()]} | {domain_not_found, binary()}. |
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remove_old_users(Domain, Timestamp) -> |
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:-( |
case list_old_users(Domain, Timestamp) of |
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{ok, OldUsers} -> |
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ok = remove_users(OldUsers), |
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{ok, OldUsers}; |
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Error -> |
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:-( |
Error |
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end. |
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%% Internal |
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-spec list_old_users(host_type(), jid:lserver(), timestamp()) -> [old_user()]. |
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list_old_users(HostType, Domain, Timestamp) -> |
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Users = ejabberd_auth:get_vh_registered_users(Domain), |
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lists:filtermap(fun(U) -> prepare_old_user(HostType, U, Timestamp) end, Users). |
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-spec prepare_old_user(host_type(), jid:simple_bare_jid(), timestamp()) -> |
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false | {true, old_user()}. |
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prepare_old_user(HostType, {LU, LS}, Timestamp) -> |
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JID = jid:make_bare(LU, LS), |
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case ejabberd_sm:get_user_resources(JID) of |
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[] -> |
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case mod_last:get_last_info(HostType, LU, LS) of |
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{ok, UserTimestamp, _} when UserTimestamp < Timestamp -> |
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{true, {JID, UserTimestamp}}; |
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not_found -> |
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{true, {JID, null}}; |
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_ -> |
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false |
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end; |
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_ -> |
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:-( |
false |
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end. |
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-spec remove_users([old_user()]) -> ok. |
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remove_users(Users) -> |
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lists:foreach(fun({JID, _}) -> ok = ejabberd_auth:remove_user(JID) end, Users). |