-module(admin_handler_ticket_stats).
-behaviour(cowboy_handler).
-export([init/2]).

-include("records.hrl").   % ← добавлено

init(Req, _Opts) ->
  case cowboy_req:method(Req) of
    <<"GET">> -> get_stats(Req);
    _         -> send_error(Req, 405, <<"Method not allowed">>)
  end.

get_stats(Req) ->
  case auth_admin(Req) of
    {ok, _AdminId, Req1} ->
      Stats = core_ticket:stats(),
      send_json(Req1, 200, Stats);
    {error, Code, Message, Req1} ->
      send_error(Req1, Code, Message)
  end.

auth_admin(Req) ->
  case handler_auth:authenticate(Req) of
    {ok, AdminId, Req1} ->
      case admin_utils:is_admin(AdminId) of
        true  -> {ok, AdminId, Req1};
        false -> {error, 403, <<"Admin access required">>, Req1}
      end;
    {error, Code, Message, Req1} ->
      {error, Code, Message, Req1}
  end.

send_json(Req, Status, Data) ->
  Headers = #{
    <<"content-type">> => <<"application/json">>,
    <<"access-control-allow-origin">> => <<"*">>,
    <<"access-control-expose-headers">> => <<"Content-Range">>
  },
  Body = jsx:encode(Data),
  cowboy_req:reply(Status, Headers, Body, Req),
  {ok, Body, []}.

send_error(Req, Status, Message) ->
  Body = jsx:encode(#{error => Message}),
  cowboy_req:reply(Status, #{<<"content-type">> => <<"application/json">>}, Body, Req),
  {ok, Body, []}.