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

logic_subscription_test_() ->
  {foreach,
    fun setup/0,
    fun cleanup/1,
    [
      {"Start trial", fun test_start_trial/0},
      {"Start trial duplicate", fun test_start_trial_duplicate/0},
      {"Activate subscription (no trial)", fun test_activate_subscription_no_trial/0},
      {"Activate subscription (after trial)", fun test_activate_subscription_after_trial/0},
      {"Check subscription - free", fun test_check_free/0},
      {"Check subscription - trial", fun test_check_trial/0},
      {"Check subscription - paid", fun test_check_paid/0},
      {"Can create commercial - free (auto-trial)", fun test_can_create_commercial_free/0},
      {"Can create commercial - trial", fun test_can_create_commercial_trial/0},
      {"Can create commercial - paid", fun test_can_create_commercial_paid/0},
      {"Get user subscription - free", fun test_get_user_subscription_free/0},
      {"Get user subscription - trial", fun test_get_user_subscription_trial/0},
      {"Get user subscription - paid", fun test_get_user_subscription_paid/0}
    ]}.

setup() ->
  mnesia:start(),
  mnesia:create_table(user, [{attributes, record_info(fields, user)}, {ram_copies, [node()]}]),
  mnesia:create_table(calendar, [{attributes, record_info(fields, calendar)}, {ram_copies, [node()]}]),
  mnesia:create_table(subscription, [{attributes, record_info(fields, subscription)}, {ram_copies, [node()]}]),
  ok.

cleanup(_) ->
  mnesia:delete_table(subscription),
  mnesia:delete_table(calendar),
  mnesia:delete_table(user),
  mnesia:stop(),
  ok.

create_test_user() ->
  UserId = base64:encode(crypto:strong_rand_bytes(16), #{mode => urlsafe, padding => false}),
  User = #user{
    id = UserId,
    email = <<UserId/binary, "@test.com">>,
    password_hash = <<"hash">>,
    role = user,
    status = active,
    created_at = calendar:universal_time(),
    updated_at = calendar:universal_time()
  },
  mnesia:dirty_write(User),
  UserId.

%% ============ Тесты ============

test_start_trial() ->
  UserId = create_test_user(),
  {ok, Sub} = logic_subscription:start_trial(UserId),
  ?assertEqual(trial, Sub#subscription.plan),
  ?assertEqual(true, Sub#subscription.trial_used).

test_start_trial_duplicate() ->
  UserId = create_test_user(),
  {ok, _} = logic_subscription:start_trial(UserId),
  {error, already_has_subscription} = logic_subscription:start_trial(UserId).

test_activate_subscription_no_trial() ->
  UserId = create_test_user(),
  {ok, Sub} = logic_subscription:activate_subscription(UserId, monthly, #{card => "4242"}),
  ?assertEqual(monthly, Sub#subscription.plan),
  ?assertEqual(false, Sub#subscription.trial_used).

test_activate_subscription_after_trial() ->
  UserId = create_test_user(),
  {ok, _} = logic_subscription:start_trial(UserId),
  {ok, Sub} = logic_subscription:activate_subscription(UserId, monthly, #{card => "4242"}),
  ?assertEqual(monthly, Sub#subscription.plan),
  ?assertEqual(true, Sub#subscription.trial_used).

test_check_free() ->
  UserId = create_test_user(),
  {ok, free, free} = logic_subscription:check_user_subscription(UserId).

test_check_trial() ->
  UserId = create_test_user(),
  {ok, _} = logic_subscription:start_trial(UserId),
  {ok, active, trial} = logic_subscription:check_user_subscription(UserId).

test_check_paid() ->
  UserId = create_test_user(),
  {ok, _} = logic_subscription:activate_subscription(UserId, monthly, #{card => "4242"}),
  {ok, active, monthly} = logic_subscription:check_user_subscription(UserId).

test_can_create_commercial_free() ->
  % Новый пользователь автоматически получает пробный период при проверке
  UserId = create_test_user(),
  ?assert(logic_subscription:can_create_commercial_calendar(UserId)).

test_can_create_commercial_trial() ->
  UserId = create_test_user(),
  {ok, _} = logic_subscription:start_trial(UserId),
  ?assert(logic_subscription:can_create_commercial_calendar(UserId)).

test_can_create_commercial_paid() ->
  UserId = create_test_user(),
  {ok, _} = logic_subscription:activate_subscription(UserId, monthly, #{card => "4242"}),
  ?assert(logic_subscription:can_create_commercial_calendar(UserId)).

test_get_user_subscription_free() ->
  UserId = create_test_user(),
  {ok, #{status := free}} = logic_subscription:get_user_subscription(UserId).

test_get_user_subscription_trial() ->
  UserId = create_test_user(),
  {ok, _} = logic_subscription:start_trial(UserId),
  {ok, #{status := active, plan := trial}} = logic_subscription:get_user_subscription(UserId).

test_get_user_subscription_paid() ->
  UserId = create_test_user(),
  {ok, _} = logic_subscription:activate_subscription(UserId, annual, #{card => "4242"}),
  {ok, #{status := active, plan := annual}} = logic_subscription:get_user_subscription(UserId).