-module(admin_handler_health_tests).
-include_lib("eunit/include/eunit.hrl").

%% ------------------------------------------------------------------
%% Фикстуры
%% ------------------------------------------------------------------
setup() ->
  ok = meck:new(cowboy_req, [non_strict]),
  ok.

cleanup(_) ->
  meck:unload(cowboy_req).

%% ------------------------------------------------------------------
%% Тесты
%% ------------------------------------------------------------------
admin_handler_health_test_() ->
  {setup, fun setup/0, fun cleanup/1, [
    {"GET /admin/health returns 200 with status ok",
      fun test_health_get/0},
    {"POST /admin/health returns 405 Method not allowed",
      fun test_health_post/0}
  ]}.

%% ── Успешный GET ─────────────────────────────────────────────
test_health_get() ->
  % Мокаем method → <<"GET">>
  ok = meck:expect(cowboy_req, method, fun(_) -> <<"GET">> end),
  % reply/4 будем перехватывать
  ok = meck:expect(cowboy_req, reply,
    fun(Code, Headers, Body, Req) ->
      put(test_reply, {Code, Headers, Body, Req})
    end),
  {ok, _, _} = admin_handler_health:init(req, []),
  {Status, _, RespBody, _} = erase(test_reply),
  ?assertEqual(200, Status),
  ?assertEqual(#{<<"status">> => <<"ok">>}, jsx:decode(RespBody, [return_maps])).

%% ── Метод не разрешён ───────────────────────────────────────
test_health_post() ->
  ok = meck:expect(cowboy_req, method, fun(_) -> <<"POST">> end),
  ok = meck:expect(cowboy_req, reply,
    fun(Code, Headers, Body, Req) ->
      put(test_reply, {Code, Headers, Body, Req})
    end),
  {ok, _, _} = admin_handler_health:init(req, []),
  {Status, _, RespBody, _} = erase(test_reply),
  ?assertEqual(405, Status),
  ?assertEqual(#{<<"error">> => <<"Method not allowed">>}, jsx:decode(RespBody, [return_maps])).