fix: owner event bookings list and paid plan durations from plan_to_months.

Fixes EventHub/EventHubBack#51
Fixes EventHub/EventHubBack#52

Co-authored-by: Cursor <cursoragent@cursor.com>

test/unit/logic_subscription_tests.erl

@@ -11,6 +11,10 @@ logic_subscription_test_() ->
       {"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},
+      {"Activate quarterly duration", fun test_activate_quarterly_duration/0},
+      {"Activate monthly duration", fun test_activate_monthly_duration/0},
+      {"Activate biannual duration", fun test_activate_biannual_duration/0},
+      {"Activate annual duration", fun test_activate_annual_duration/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},
@@ -76,6 +80,38 @@ test_activate_subscription_after_trial() ->
   ?assertEqual(monthly, Sub#subscription.plan),
   ?assertEqual(true, Sub#subscription.trial_used).
 
+%% Длительность при активации (в т.ч. первой платной с trial_used=false) из Plan.
+assert_plan_duration(Sub, Months) ->
+  {{Y1, M1, D1}, _} = Sub#subscription.started_at,
+  {{Y2, M2, D2}, Time2} = Sub#subscription.expires_at,
+  StartDays = calendar:date_to_gregorian_days({Y1, M1, D1}),
+  EndDays = calendar:date_to_gregorian_days({Y2, M2, D2}),
+  ?assertEqual(Months * 30, EndDays - StartDays),
+  ?assertEqual({0, 0, 0}, Time2).
+
+test_activate_monthly_duration() ->
+  UserId = create_test_user(),
+  {ok, Sub} = logic_subscription:activate_subscription(UserId, monthly, #{card => "4242"}),
+  ?assertEqual(false, Sub#subscription.trial_used),
+  assert_plan_duration(Sub, 1).
+
+test_activate_quarterly_duration() ->
+  UserId = create_test_user(),
+  {ok, Sub} = logic_subscription:activate_subscription(UserId, quarterly, #{card => "4242"}),
+  ?assertEqual(quarterly, Sub#subscription.plan),
+  ?assertEqual(false, Sub#subscription.trial_used),
+  assert_plan_duration(Sub, 3).
+
+test_activate_biannual_duration() ->
+  UserId = create_test_user(),
+  {ok, Sub} = logic_subscription:activate_subscription(UserId, biannual, #{card => "4242"}),
+  assert_plan_duration(Sub, 6).
+
+test_activate_annual_duration() ->
+  UserId = create_test_user(),
+  {ok, Sub} = logic_subscription:activate_subscription(UserId, annual, #{card => "4242"}),
+  assert_plan_duration(Sub, 12).
+
 test_check_free() ->
   UserId = create_test_user(),
   {ok, free, free} = logic_subscription:check_user_subscription(UserId).