%%%-------------------------------------------------------------------
%%% @doc Тесты административного API для управления отзывами.
%%% Покрывает эндпоинты:
%%%   GET    /v1/admin/reviews
%%%   PATCH  /v1/admin/reviews
%%%   GET    /v1/admin/reviews/:id
%%%   PUT    /v1/admin/reviews/:id
%%% @end
%%%-------------------------------------------------------------------
-module(admin_reviews_tests).
-include_lib("eunit/include/eunit.hrl").

-export([test/0]).

%%%===================================================================
%%% EUnit test generator
%%%===================================================================

test() ->
  ct:pal("=== Admin Reviews Tests ==="),
  Token = api_test_runner:get_admin_token(),
  UserToken = api_test_runner:get_user_token(),

  %% Создаём тестовые данные: календарь, событие
  CalId = api_test_runner:create_calendar(UserToken, #{title => <<"ReviewsTestCal">>}),
  EventId = api_test_runner:create_event(UserToken, CalId, #{
    title => <<"Event for review testing">>,
    start_time => api_test_runner:future_date(),
    duration => 60
  }),

  %% Создаём двух пользователей для отзывов
  User1Email = api_test_runner:unique_email(<<"rev1">>),
  User1Token = api_test_runner:register_and_login(User1Email, <<"pass1">>),
  User2Email = api_test_runner:unique_email(<<"rev2">>),
  User2Token = api_test_runner:register_and_login(User2Email, <<"pass2">>),

  %% Записываем пользователей на событие и подтверждаем бронирования
  #{<<"id">> := Booking1Id} = api_test_runner:client_post(
    <<"/v1/events/", EventId/binary, "/bookings">>, User1Token, #{}),
  #{<<"id">> := Booking2Id} = api_test_runner:client_post(
    <<"/v1/events/", EventId/binary, "/bookings">>, User2Token, #{}),

  ct:pal("  Confirming bookings as calendar owner..."),
  api_test_runner:client_put(<<"/v1/bookings/", Booking1Id/binary>>, UserToken,
    #{action => <<"confirm">>}),
  api_test_runner:client_put(<<"/v1/bookings/", Booking2Id/binary>>, UserToken,
    #{action => <<"confirm">>}),

  %% Оставляем отзывы от имени участников
  #{<<"id">> := Review1Id} = api_test_runner:client_post(<<"/v1/reviews">>, User1Token, #{
    target_type => <<"event">>,
    target_id => EventId,
    rating => 5,
    comment => <<"Great!">>
  }),
  #{<<"id">> := Review2Id} = api_test_runner:client_post(<<"/v1/reviews">>, User2Token, #{
    target_type => <<"event">>,
    target_id => EventId,
    rating => 4,
    comment => <<"Good">>
  }),

  %% Запускаем тесты
  test_list_reviews(Token),
  test_filter_reviews(Token, EventId),
  test_bulk_update_status(Token, Review1Id, Review2Id),
  test_get_review(Token, Review1Id),
  test_update_review(Token, Review1Id),
  test_review_pagination(Token),

  ct:pal("=== All admin reviews tests passed ==="),
  ok.

%%%===================================================================
%%% Тестовые функции
%%%===================================================================

%% @doc GET /v1/admin/reviews – список отзывов.
test_list_reviews(Token) ->
  ct:pal("  TEST: List all reviews"),
  Reviews = api_test_runner:admin_get(<<"/v1/admin/reviews">>, Token),
  ?assert(is_list(Reviews)),
  ?assert(length(Reviews) >= 2),
  ct:pal("    OK: ~p reviews", [length(Reviews)]).

%% @doc GET /v1/admin/reviews?target_type=event&target_id=... – фильтрация по цели.
test_filter_reviews(Token, EventId) ->
  ct:pal("  TEST: Filter reviews by target"),
  Path = <<"/v1/admin/reviews?target_type=event&target_id=", EventId/binary>>,
  Reviews = api_test_runner:admin_get(Path, Token),
  ?assert(is_list(Reviews)),
  ?assert(length(Reviews) >= 2),
  [?assertEqual(EventId, maps:get(<<"target_id">>, R)) || R <- Reviews],
  ct:pal("    OK: ~p reviews for event", [length(Reviews)]).

%% @doc PATCH /v1/admin/reviews – массовое обновление статусов.
test_bulk_update_status(Token, Review1Id, Review2Id) ->
  ct:pal("  TEST: Bulk update review statuses"),
  Body = [
    #{<<"id">> => Review1Id, <<"status">> => <<"visible">>},
    #{<<"id">> => Review2Id, <<"status">> => <<"hidden">>}
  ],
  #{<<"updated_count">> := Count} = api_test_runner:admin_patch(<<"/v1/admin/reviews">>, Token, Body),
  ?assertEqual(2, Count),
  ct:pal("    OK: updated ~p reviews", [Count]).

%% @doc GET /v1/admin/reviews/:id – получение отзыва по ID.
test_get_review(Token, ReviewId) ->
  ct:pal("  TEST: Get review by ID"),
  Path = <<"/v1/admin/reviews/", ReviewId/binary>>,
  Review = api_test_runner:admin_get(Path, Token),
  ?assertEqual(ReviewId, maps:get(<<"id">>, Review)),
  ?assertEqual(<<"visible">>, maps:get(<<"status">>, Review)),
  ct:pal("    OK: ~s", [maps:get(<<"comment">>, Review)]).

%% @doc PUT /v1/admin/reviews/:id – обновление отзыва.
test_update_review(Token, ReviewId) ->
  ct:pal("  TEST: Update review"),
  Path = <<"/v1/admin/reviews/", ReviewId/binary>>,
  Updates = #{<<"comment">> => <<"Updated by admin">>},
  Updated = api_test_runner:admin_put(Path, Token, Updates),
  ?assertEqual(<<"Updated by admin">>, maps:get(<<"comment">>, Updated)),
  ct:pal("    OK").

%% @doc GET /v1/admin/reviews?limit=...&offset=... – пагинация.
test_review_pagination(Token) ->
  ct:pal("  TEST: Review pagination"),
  Page1 = api_test_runner:admin_get(<<"/v1/admin/reviews?limit=1&offset=0">>, Token),
  ?assertEqual(1, length(Page1)),
  Page2 = api_test_runner:admin_get(<<"/v1/admin/reviews?limit=1&offset=1">>, Token),
  ?assert(length(Page2) >= 1),
  Id1 = maps:get(<<"id">>, hd(Page1)),
  Id2 = maps:get(<<"id">>, hd(Page2)),
  ?assertNotEqual(Id1, Id2),
  ct:pal("    OK").