Refactor promo code handling in admin panel and clean up unused methods

- Replaced the promo_codes module with a new promo management structure, enhancing organization and clarity in the admin panel.
- Updated admin panel handlers to utilize the new promo management methods, improving the flow of promo code creation and management.
- Removed deprecated methods from payment and subscription data access layers, streamlining the codebase and improving maintainability.
- Ensured localization files are updated to reflect changes in promo management messaging, enhancing user experience.

db/dal/user_dal.py

@@ -81,18 +81,6 @@ async def update_user_language(
     return result.rowcount > 0
 
 
-async def set_user_ban_status(
-    session: AsyncSession, user_id: int, is_banned: bool
-) -> bool:
-    user = await get_user_by_id(session, user_id)
-    if user:
-        user.is_banned = is_banned
-        await session.flush()
-        await session.refresh(user)
-        return True
-    return False
-
-
 async def get_banned_users(session: AsyncSession) -> List[User]:
     """Get all banned users"""
     stmt = (
@@ -104,58 +92,12 @@ async def get_banned_users(session: AsyncSession) -> List[User]:
     return result.scalars().all()
 
 
-async def get_banned_users_paginated(
-    session: AsyncSession, limit: int, offset: int
-) -> Tuple[List[User], int]:
-    stmt_users = (
-        select(User)
-        .where(User.is_banned == True)
-        .order_by(User.registration_date.desc())
-        .limit(limit)
-        .offset(offset)
-    )
-    result_users = await session.execute(stmt_users)
-    users_list = result_users.scalars().all()
-
-    stmt_count = select(func.count()).select_from(User).where(User.is_banned == True)
-    result_count = await session.execute(stmt_count)
-    total_banned = result_count.scalar_one()
-
-    return users_list, total_banned
-
-
 async def get_all_active_user_ids_for_broadcast(session: AsyncSession) -> List[int]:
     stmt = select(User.user_id).where(User.is_banned == False)
     result = await session.execute(stmt)
     return result.scalars().all()
 
 
-async def get_user_count_stats_dal(session: AsyncSession) -> Dict[str, int]:
-    total_users_stmt = select(func.count(User.user_id)).select_from(User)
-    banned_users_stmt = (
-        select(func.count(User.user_id)).select_from(User).where(User.is_banned == True)
-    )
-
-    active_subs_stmt = (
-        select(func.count(func.distinct(Subscription.user_id)))
-        .join(User, Subscription.user_id == User.user_id)
-        .where(Subscription.is_active == True)
-        .where(Subscription.end_date > datetime.now())
-    )
-
-    total_users = (await session.execute(total_users_stmt)).scalar_one_or_none() or 0
-    banned_users = (await session.execute(banned_users_stmt)).scalar_one_or_none() or 0
-    active_subs_users = (
-        await session.execute(active_subs_stmt)
-    ).scalar_one_or_none() or 0
-
-    return {
-        "total_users": total_users,
-        "banned_users": banned_users,
-        "users_with_active_subscriptions": active_subs_users,
-    }
-
-
 async def get_all_users_with_panel_uuid(session: AsyncSession) -> List[User]:
     stmt = select(User).where(User.panel_user_uuid.is_not(None))
     result = await session.execute(stmt)