%%
%% %CopyrightBegin%
%%
%% SPDX-License-Identifier: Apache-2.0
%%
%% Copyright Ericsson AB 1996-2025. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%%     http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
-module(ch_sup).
-behaviour(supervisor).

%% External exports
-export([start/2, start_phase/3, stop/1, config_change/3]).

%% Internal exports
-export([init/1]).

start(_Type, {_AppN, Low, High}) ->
    Name = list_to_atom(lists:concat([ch_sup, Low])),
    {ok, P} = supervisor:start_link({local, Name}, ch_sup,
				    lists:seq(Low, High)),
    {ok, P, []}.

stop(State) ->
    case whereis(test_application_stop_called) of
        undefined ->
            ok;
        Pid ->
            Pid ! {stop_called, State}
    end.
 
start_phase(_Phase, _Type, _Args) ->
    ok.

init(Nos) ->
    SupFlags = {one_for_one, 12, 60},
    Chs = lists:map(fun(No) ->
			   {list_to_atom(lists:concat([ch,No])),
			    {ch, start_link, [{ch, No}]},
			    permanent, 2000, worker, [ch]}
		    end,
		    Nos),
    {ok, {SupFlags, Chs}}.

config_change(Changed, New, Removed) ->
    (catch global:send(conf_change,{cc, [{Changed, New, Removed}]})),
    ok.
