update

alembic/env.py

@@ -59,11 +59,10 @@ def do_run_migrations(connection: Connection):
 
 
 async def run_async_migrations() -> None:
-    """In this scenario we need to create an Engine
+    connectable = create_async_engine(
-    and associate a connection with the context.
+        db_config.url,
-
+        connect_args={"server_settings": {"timezone": "UTC"}},
-    """
+    )
-    connectable = create_async_engine(db_config.url)
 
     async with connectable.connect() as connection:
         await connection.run_sync(do_run_migrations)

alembic/versions/2ba7282de7d9_set_timezone_to_utc.py

@@ -0,0 +1,25 @@
+"""set_timezone_to_utc
+
+Revision ID: 2ba7282de7d9
+Revises: c4d5e6f7a8b9
+Create Date: 2026-02-20 01:14:15.088425
+
+"""
+from collections.abc import Sequence
+
+from alembic import op
+import sqlalchemy as sa
+
+
+revision: str = '2ba7282de7d9'
+down_revision: str | None = 'c4d5e6f7a8b9'
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    op.execute("SET timezone = 'UTC'")
+
+
+def downgrade() -> None:
+    pass

src/quizzi/application/bot/shared_dialogs/create_test.py

@@ -1,4 +1,4 @@
-from datetime import date, datetime, time
+from datetime import date, datetime, time, timezone
 
 from aiogram.types import CallbackQuery, ContentType, Message
 from aiogram_dialog import Dialog, DialogManager, StartMode, Window
@@ -139,7 +139,8 @@ async def on_skip_time_limit(_callback: CallbackQuery, _button: Button, manager:
 
 
 async def on_date_selected(_callback, _widget, manager: DialogManager, selected_date: date):
-    manager.dialog_data["expires_at"] = datetime.combine(selected_date, time.min)
+    expires_at = datetime.combine(selected_date, time.min, tzinfo=timezone.utc).replace(tzinfo=None)
+    manager.dialog_data["expires_at"] = expires_at
     await manager.switch_to(SharedCreateTestSG.input_for_group)
 
 

src/quizzi/application/bot/shared_dialogs/tests.py

@@ -1,6 +1,6 @@
 import asyncio
 import functools
-from datetime import date, datetime, time
+from datetime import date, datetime, time, timezone
 
 from aiogram import Bot
 from aiogram.types import BufferedInputFile, CallbackQuery, Message
@@ -520,7 +520,7 @@ async def on_date_selected_for_test(
         await _callback.answer("❌ Тест не найден")
         return
     
-    expires_at = datetime.combine(selected_date, time.min)
+    expires_at = datetime.combine(selected_date, time.min, tzinfo=timezone.utc).replace(tzinfo=None)
     result = await test_service.update_expires(test_id, expires_at)
     await _callback.answer(result.message)
     await manager.switch_to(SharedTestsSG.test_detail)

src/quizzi/application/bot/user_dialogs/deeplink.py

@@ -12,7 +12,7 @@ from quizzi.infrastructure.database.models import QuestionType
 from quizzi.infrastructure.database.repo.test import TestRepository
 from quizzi.infrastructure.database.repo.test_attempt import TestAttemptRepository
 from quizzi.infrastructure.utils.rate_limiter import PasswordRateLimiter
-from quizzi.infrastructure.utils.timezone import now_msk_naive, to_msk
+from quizzi.infrastructure.utils.timezone import now_utc_naive, to_msk
 
 
 @inject
@@ -137,7 +137,7 @@ async def start_test_without_password(
         return
     
     attempt = await attempt_repo.attempt_dao.create(user_id=user_id, test_id=test_id)
-    started_at = now_msk_naive()
+    started_at = now_utc_naive()
     
     first_question, _ = await test_repo.get_question_with_options(questions[0].id)
     

src/quizzi/application/bot/user_dialogs/main_menu.py

@@ -20,7 +20,7 @@ from quizzi.infrastructure.database.repo.test_attempt import TestAttemptReposito
 from quizzi.infrastructure.utils.config import Config
 from quizzi.infrastructure.utils.qr_generator import generate_qr_bytes
 from quizzi.infrastructure.utils.test_id_to_hash import encode_id
-from quizzi.infrastructure.utils.timezone import now_msk, now_msk_naive, to_msk
+from quizzi.infrastructure.utils.timezone import now_utc, now_utc_naive, to_msk
 
 
 def can_edit_field(updated_at: datetime | None) -> bool:
@@ -28,13 +28,17 @@ def can_edit_field(updated_at: datetime | None) -> bool:
         return True
     updated_at_msk = to_msk(updated_at)
     assert updated_at_msk is not None
-    return now_msk() - updated_at_msk >= timedelta(hours=24)
+    now_msk = to_msk(now_utc())
+    assert now_msk is not None
+    return now_msk - updated_at_msk >= timedelta(hours=24)
 
 
 def get_remaining_time(updated_at: datetime) -> str:
     updated_at_msk = to_msk(updated_at)
     assert updated_at_msk is not None
-    remaining = timedelta(hours=24) - (now_msk() - updated_at_msk)
+    now_msk = to_msk(now_utc())
+    assert now_msk is not None
+    remaining = timedelta(hours=24) - (now_msk - updated_at_msk)
     hours = int(remaining.total_seconds() // 3600)
     minutes = int((remaining.total_seconds() % 3600) // 60)
     return f"{hours}ч {minutes}м"
@@ -149,7 +153,7 @@ async def on_name_input(
     result = await user_dao.update(
         user_id=message.from_user.id,
         name=name,
-        name_updated_at=now_msk_naive(),
+        name_updated_at=now_utc_naive(),
     )
     if result:
         await message.answer("✅ Имя обновлено")
@@ -176,7 +180,7 @@ async def on_group_selected(
     result = await user_dao.update(
         user_id=_callback.from_user.id,
         group=int(item_id),
-        group_updated_at=now_msk_naive(),
+        group_updated_at=now_utc_naive(),
     )
     if result:
         await _callback.answer("✅ Группа обновлена")

src/quizzi/application/bot/user_dialogs/registration.py

@@ -9,7 +9,7 @@ from dishka.integrations.aiogram_dialog import inject
 from quizzi.application.bot.user_dialogs.states import UserDeeplinkSG, UserMenuSG, UserRegistrationSG
 from quizzi.infrastructure.database.dao.group import GroupDAO
 from quizzi.infrastructure.database.dao.user import UserDAO
-from quizzi.infrastructure.utils.timezone import now_msk_naive
+from quizzi.infrastructure.utils.timezone import now_utc_naive
 
 
 @inject
@@ -40,7 +40,7 @@ async def on_name_input(
     pending_test_id = start_data.get("pending_test_id")
     
     if user_id:
-        await user_dao.update(user_id=user_id, name=name, name_updated_at=now_msk_naive())
+        await user_dao.update(user_id=user_id, name=name, name_updated_at=now_utc_naive())
     
     manager.dialog_data["name"] = name
     
@@ -80,7 +80,7 @@ async def on_group_selected(
     pending_test_id = start_data.get("pending_test_id")
     
     if user_id:
-        await user_dao.update(user_id=user_id, group=int(item_id), group_updated_at=now_msk_naive())
+        await user_dao.update(user_id=user_id, group=int(item_id), group_updated_at=now_utc_naive())
     
     if pending_test_id:
         await manager.start(

src/quizzi/application/bot/user_dialogs/take_test.py

@@ -196,7 +196,7 @@ async def on_start_test(
         await _callback.answer("❌ Тест деактивирован")
         return
     
-    if test.expires_at and test.expires_at < now_msk_naive():
+    if test.expires_at and test.expires_at < now_utc_naive():
         await _callback.answer("❌ Срок действия теста истек")
         return
     

src/quizzi/infrastructure/database/config.py

@@ -8,6 +8,7 @@ def new_session_maker(db_url: str) -> async_sessionmaker[AsyncSession]:
         max_overflow=15,
         connect_args={
             "timeout": 5,
+            "server_settings": {"timezone": "UTC"},
         },
     )
     return async_sessionmaker(engine, class_=AsyncSession, autoflush=False, expire_on_commit=False)

src/quizzi/infrastructure/database/dao/test_attempt.py

@@ -1,4 +1,4 @@
-from datetime import datetime
+from datetime import datetime, timezone
 
 from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
@@ -34,7 +34,7 @@ class TestAttemptDAO:
         attempt = TestAttempt(
             user_id=user_id,
             test_id=test_id,
-            started_at=datetime.utcnow(),
+            started_at=datetime.now(timezone.utc).replace(tzinfo=None),
             score=score,
             is_passed=is_passed,
         )

src/quizzi/infrastructure/database/repo/test_attempt.py

@@ -15,7 +15,7 @@ from quizzi.infrastructure.database.models import Test as TestModel
 from quizzi.infrastructure.database.models import TestAttempt as TestAttemptModel
 from quizzi.infrastructure.database.models import User as UserModel
 from quizzi.infrastructure.database.models import UserAnswer as UserAnswerModel
-from quizzi.infrastructure.utils.timezone import now_msk_naive
+from quizzi.infrastructure.utils.timezone import now_utc_naive
 
 
 @final
@@ -135,7 +135,7 @@ class TestAttemptRepository:
     async def finish_attempt(self, attempt_id: int, score: int, is_passed: bool) -> TestAttempt | None:
         return await self.attempt_dao.update(
             attempt_id=attempt_id,
-            finished_at=now_msk_naive(),
+            finished_at=now_utc_naive(),
             score=score,
             is_passed=is_passed
         )

src/quizzi/infrastructure/scheduling/tasks.py

@@ -9,7 +9,7 @@ from quizzi.infrastructure.database.dao.test import TestDAO
 from quizzi.infrastructure.database.dao.user_answer import UserAnswerDAO
 from quizzi.infrastructure.database.repo.test import TestRepository
 from quizzi.infrastructure.database.repo.test_attempt import TestAttemptRepository
-from quizzi.infrastructure.utils.timezone import now_msk_naive
+from quizzi.infrastructure.utils.timezone import now_utc_naive
 
 logger = logging.getLogger(__name__)
 
@@ -18,7 +18,7 @@ async def deactivate_expired_tests(container: AsyncContainer) -> None:
     async with container() as request_container:
         test_dao = await request_container.get(TestDAO)
         
-        expired_tests = await test_dao.get_expired_active_tests(now_msk_naive())
+        expired_tests = await test_dao.get_expired_active_tests(now_utc_naive())
         
         for test in expired_tests:
             await test_dao.update(test.id, is_active=False)
@@ -31,7 +31,7 @@ async def finish_expired_test_attempts(container: AsyncContainer, bot: Bot) -> N
         test_repo = await request_container.get(TestRepository)
         answer_dao = await request_container.get(UserAnswerDAO)
         
-        now = now_msk_naive()
+        now = now_utc_naive()
         expired_attempts = await attempt_repo.get_expired_active_attempts(now)
         
         for attempt, _ in expired_attempts:
@@ -91,7 +91,7 @@ async def send_time_warning_notifications(container: AsyncContainer, bot: Bot) -
         attempt_repo = await request_container.get(TestAttemptRepository)
         test_repo = await request_container.get(TestRepository)
         
-        now = now_msk_naive()
+        now = now_utc_naive()
         attempts_needing_warning = await attempt_repo.get_attempts_needing_warning(now)
         
         for attempt, time_limit, questions_count in attempts_needing_warning:

src/quizzi/infrastructure/utils/timezone.py

@@ -1,24 +1,19 @@
-from datetime import datetime
+from datetime import datetime, timedelta, timezone
-from zoneinfo import ZoneInfo
 
-MSK_TZ = ZoneInfo("Europe/Moscow")
+MSK_TZ = timezone(timedelta(hours=3))
 
 
-def now_msk() -> datetime:
+def now_utc() -> datetime:
-    return datetime.now(MSK_TZ)
+    return datetime.now(timezone.utc)
-
-
-def now_msk_naive() -> datetime:
-    return datetime.now(MSK_TZ).replace(tzinfo=None)
 
 
 def now_utc_naive() -> datetime:
-    return datetime.utcnow()
+    return datetime.now(timezone.utc).replace(tzinfo=None)
 
 
 def to_msk(dt: datetime | None) -> datetime | None:
     if dt is None:
         return None
     if dt.tzinfo is None:
-        return dt.replace(tzinfo=MSK_TZ)
+        dt = dt.replace(tzinfo=timezone.utc)
     return dt.astimezone(MSK_TZ)

src/quizzi/service/test.py

@@ -8,7 +8,7 @@ from quizzi.infrastructure.database.repo.test import TestRepository
 from quizzi.infrastructure.database.repo.test_attempt import TestAttemptRepository
 from quizzi.infrastructure.utils.config import Config
 from quizzi.infrastructure.utils.test_id_to_hash import decode_id, encode_id
-from quizzi.infrastructure.utils.timezone import now_msk_naive
+from quizzi.infrastructure.utils.timezone import now_utc_naive
 
 
 @dataclass
@@ -68,7 +68,7 @@ class TestService:
         if not test.is_active:
             return TestValidationResult(is_valid=False, error="❌ Тест деактивирован", test=test)
         
-        if test.expires_at and test.expires_at < now_msk_naive():
+        if test.expires_at and test.expires_at < now_utc_naive():
             return TestValidationResult(is_valid=False, error="❌ Срок действия теста истек", test=test)
         
         user = await self._user_dao.get_by_id(user_id)
@@ -90,7 +90,7 @@ class TestService:
         if not test.is_active:
             return TestAccessResult(can_access=False, error="❌ Тест деактивирован")
         
-        if test.expires_at and test.expires_at < now_msk_naive():
+        if test.expires_at and test.expires_at < now_utc_naive():
             return TestAccessResult(can_access=False, error="❌ Срок действия теста истек")
         
         if test.attempts:

src/quizzi/service/test_attempt.py

@@ -6,7 +6,7 @@ from quizzi.infrastructure.database.dao.test import TestDAO
 from quizzi.infrastructure.database.dao.user_answer import UserAnswerDAO
 from quizzi.infrastructure.database.repo.test import TestRepository
 from quizzi.infrastructure.database.repo.test_attempt import TestAttemptRepository
-from quizzi.infrastructure.utils.timezone import now_msk_naive
+from quizzi.infrastructure.utils.timezone import now_utc_naive
 
 
 @dataclass
@@ -56,7 +56,7 @@ class TestAttemptService:
             return AttemptStartResult(success=False, error="❌ В тесте нет вопросов")
         
         attempt = await self._attempt_repo.attempt_dao.create(user_id=user_id, test_id=test_id)
-        started_at = now_msk_naive()
+        started_at = now_utc_naive()
         
         return AttemptStartResult(
             success=True,