-module(admin_handler_ticket_stats_tests).
-include_lib("eunit/include/eunit.hrl").
-include("records.hrl").

setup() ->
  ok = meck:new(cowboy_req, [non_strict]),
  ok = meck:new(handler_auth, [non_strict]),
  ok = meck:new(core_user, [non_strict]),
  ok = meck:new(core_ticket, [non_strict]),
  ok = meck:expect(cowboy_req, reply,
    fun(Code, Headers, Body, Req) ->
      put(test_reply, {Code, Headers, Body, Req})
    end),
  ok.

cleanup(_) ->
  meck:unload(core_ticket),
  meck:unload(core_user),
  meck:unload(handler_auth),
  meck:unload(cowboy_req).

admin_ticket_stats_test_() ->
  {setup, fun setup/0, fun cleanup/1, [
    {"GET /admin/tickets/stats – success", fun test_stats/0},
    {"GET /admin/tickets/stats – forbidden", fun test_stats_forbidden/0},
    {"POST /admin/tickets/stats – method not allowed", fun test_wrong_method/0}
  ]}.

test_stats() ->
  ok = meck:expect(cowboy_req, method, fun(_) -> <<"GET">> end),
  ok = meck:expect(handler_auth, authenticate,
    fun(Req) -> {ok, <<"adm1">>, Req} end),
  AdminUser = #user{id = <<"adm1">>, role = admin},
  ok = meck:expect(core_user, get_by_id,
    fun(<<"adm1">>) -> {ok, AdminUser} end),
  StatsData = #{
    open => 5,
    in_progress => 3,
    resolved => 12,
    closed => 20
  },
  ok = meck:expect(core_ticket, stats, fun() -> StatsData end),
  {ok, _, _} = admin_handler_ticket_stats:init(req, []),
  {Status, _, RespBody, _} = erase(test_reply),
  ?assertEqual(200, Status),
  #{<<"open">> := 5, <<"resolved">> := 12} = jsx:decode(RespBody, [return_maps]).

test_stats_forbidden() ->
  ok = meck:expect(cowboy_req, method, fun(_) -> <<"GET">> end),
  ok = meck:expect(handler_auth, authenticate,
    fun(Req) -> {error, 403, <<"Admin access required">>, Req} end),
  {ok, _, _} = admin_handler_ticket_stats:init(req, []),
  {Status, _, _, _} = erase(test_reply),
  ?assertEqual(403, Status).

test_wrong_method() ->
  ok = meck:expect(cowboy_req, method, fun(_) -> <<"POST">> end),
  {ok, _, _} = admin_handler_ticket_stats:init(req, []),
  {Status, _, RespBody, _} = erase(test_reply),
  ?assertEqual(405, Status),
  #{<<"error">> := <<"Method not allowed">>} = jsx:decode(RespBody, [return_maps]).