-module(admin_handler_reports_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_report, [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_report),
  meck:unload(core_user),
  meck:unload(handler_auth),
  meck:unload(cowboy_req).

admin_reports_test_() ->
  {setup, fun setup/0, fun cleanup/1, [
    {"GET /admin/reports – success",             fun test_list_reports/0},
    {"GET /admin/reports – forbidden",           fun test_list_reports_forbidden/0},
    {"PUT /admin/reports/:id – success",         fun test_update_report/0},
    {"PUT /admin/reports/:id – missing status",  fun test_update_report_bad_json/0},
    {"PUT /admin/reports/:id – not found",       fun test_update_report_not_found/0},
    {"POST /admin/reports – method not allowed", fun test_wrong_method/0}
  ]}.

test_list_reports() ->
  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),
  Report = #report{
    id = <<"r1">>,
    reporter_id = <<"u1">>,
    target_type = <<"event">>,
    target_id = <<"e1">>,
    reason = <<"spam">>,
    status = <<"new">>,
    created_at = {{2026,4,26},{12,0,0}},
    resolved_at = undefined
  },
  ok = meck:expect(core_report, list_reports, fun() -> [Report] end),
  {ok, _, _} = admin_handler_reports:init(req, []),
  {Status, _, RespBody, _} = erase(test_reply),
  ?assertEqual(200, Status),
  [#{<<"id">> := <<"r1">>, <<"target_type">> := <<"event">>, <<"status">> := <<"new">>}]
    = jsx:decode(RespBody, [return_maps]).

test_list_reports_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_reports:init(req, []),
  {Status, _, RespBody, _} = erase(test_reply),
  ?assertEqual(403, Status),
  #{<<"error">> := <<"Admin access required">>} = jsx:decode(RespBody, [return_maps]).

test_update_report() ->
  ok = meck:expect(cowboy_req, method, fun(_) -> <<"PUT">> 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),
  ok = meck:expect(cowboy_req, binding,
    fun(id, _) -> <<"r1">> end),
  ok = meck:expect(cowboy_req, read_body,
    fun(Req) -> {ok, jsx:encode(#{<<"status">> => <<"reviewed">>}), Req} end),
  Updated = #report{id = <<"r1">>, status = <<"reviewed">>},
  ok = meck:expect(core_report, update_status,
    fun(<<"r1">>, <<"reviewed">>) -> {ok, Updated} end),
  {ok, _, _} = admin_handler_reports:init(req, []),
  {Status, _, RespBody, _} = erase(test_reply),
  ?assertEqual(200, Status),
  #{<<"status">> := <<"reviewed">>} = jsx:decode(RespBody, [return_maps]).

test_update_report_bad_json() ->
  ok = meck:expect(cowboy_req, method, fun(_) -> <<"PUT">> 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),
  ok = meck:expect(cowboy_req, binding,
    fun(id, _) -> <<"r1">> end),
  ok = meck:expect(cowboy_req, read_body,
    fun(Req) -> {ok, <<"bad json">>, Req} end),
  {ok, _, _} = admin_handler_reports:init(req, []),
  {Status, _, _, _} = erase(test_reply),   %% исправлено: четыре элемента
  ?assertEqual(400, Status).

test_update_report_not_found() ->
  ok = meck:expect(cowboy_req, method, fun(_) -> <<"PUT">> 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),
  ok = meck:expect(cowboy_req, binding,
    fun(id, _) -> <<"r99">> end),
  ok = meck:expect(cowboy_req, read_body,
    fun(Req) -> {ok, jsx:encode(#{<<"status">> => <<"reviewed">>}), Req} end),
  ok = meck:expect(core_report, update_status,
    fun(_, _) -> {error, not_found} end),
  {ok, _, _} = admin_handler_reports:init(req, []),
  {Status, _, _, _} = erase(test_reply),   %% исправлено: четыре элемента
  ?assertEqual(404, Status).

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