feat: implement billing system with Pally integration

- Added billing models and repository for handling bills.
- Introduced BillingService to manage payment initiation and bill creation.
- Updated user service to remove ticket-related functionality.
- Refactored settings to include new billing-related fields.
- Removed ticket-related handlers and schemas.
- Added new billing handlers for processing payments.
- Updated database schema with new bills table and status enum.
- Enhanced utility functions to calculate prices considering discounts.
- Introduced prehandling for non-private messages.
- Updated main application to initialize new billing services and repositories.

handlers/referals.py

@@ -1,23 +1,14 @@
 from aiogram import F, Router
-from aiogram.filters import Command, CommandObject
 from aiogram.fsm.context import FSMContext
-from aiogram.types import CallbackQuery, Message
+from aiogram.types import CallbackQuery
 from aiogram.utils.deep_linking import create_start_link
 from sqlalchemy.ext.asyncio import AsyncSession
 
-from config import settings
-from keyboards.client import close_kb, referals_kb
+from keyboards.client import referals_kb
 from misc.utils import format_share_deep_link
-from schemas.common import GeneralMessageContext
 from schemas.di import DependenciesDTO
-from states.admins import AdminStorage
 from texts import (
-    GENERAL_PROCESSING,
-    INVALID_ARGUMENT_REFPAY,
     REFERALS_MENU,
-    SPECIFY_REFERAL_PAYMENT_AMOUNT,
-    SUCCESSFUL_REFPAY,
-    USER_NO_REFERAL,
 )
 
 router = Router()
@@ -37,85 +28,3 @@ async def referal_menu(
         REFERALS_MENU.format(balance=user.balance, link=referal_link),
         reply_markup=referals_kb(share_link),
     )
-
-
-@router.message(F.chat.id == settings.admin_group_id, Command("refpay"))
-async def refpay(
-    msg: Message,
-    command: CommandObject,
-    state: FSMContext,
-    session: AsyncSession,
-    deps: DependenciesDTO,
-):
-    await state.clear()
-
-    await msg.delete()
-    status_msg = await msg.answer(GENERAL_PROCESSING)
-    user = await deps.user_service.fetch_user_by_thread(session, msg.message_thread_id)
-    referal = await deps.user_repository.get_user_by_id(session, user.referal_id)
-    if not referal:
-        await status_msg.edit_text(USER_NO_REFERAL)
-        return
-
-    amount = command.args
-
-    if not amount.isdigit():
-        await status_msg.edit_text(INVALID_ARGUMENT_REFPAY)
-        return
-
-    amount = int(amount)
-    await deps.user_repository.increase_user_balance(session, referal.id, amount)
-    await status_msg.edit_text(SUCCESSFUL_REFPAY.format(referal_id=referal.id, amount=amount))
-
-
-@router.callback_query(F.message.chat.id == settings.admin_group_id, F.data == "refpay")
-async def refpay_cb(
-    cb: CallbackQuery,
-    state: FSMContext,
-    session: AsyncSession,
-    deps: DependenciesDTO,
-):
-    await state.clear()
-
-    user = await deps.user_service.fetch_user_by_thread(session, cb.message.message_thread_id)
-    referal = await deps.user_repository.get_user_by_id(session, user.referal_id)
-
-    if not referal:
-        await cb.message.answer(USER_NO_REFERAL, reply_markup=close_kb)
-        return
-
-    msg = await cb.message.answer(SPECIFY_REFERAL_PAYMENT_AMOUNT, reply_markup=close_kb)
-    ctx = GeneralMessageContext(msg=msg)
-    await state.set_state(AdminStorage.refpay_amount)
-    await state.set_data({"ctx": ctx})
-
-
-@router.message(
-    AdminStorage.refpay_amount,
-    F.chat.id == settings.admin_group_id,
-    F.from_user.is_bot == False,  # noqa: E712
-)
-async def refpay_execute(
-    msg: Message, state: FSMContext, session: AsyncSession, deps: DependenciesDTO
-):
-    data = await state.get_data()
-    await state.clear()
-    await msg.delete()
-
-    ctx: GeneralMessageContext | None = data.get("ctx")
-    if ctx:
-        status_msg = ctx.msg
-    else:
-        status_msg = await msg.answer(GENERAL_PROCESSING)
-
-    amount = msg.text
-    if not amount.isdigit():
-        await status_msg.edit_text(INVALID_ARGUMENT_REFPAY, reply_markup=close_kb)
-        return
-
-    user = await deps.user_service.fetch_user_by_thread(session, msg.message_thread_id)
-    referal = await deps.user_repository.get_user_by_id(session, user.referal_id)
-
-    amount = int(amount)
-    await deps.user_repository.increase_user_balance(session, referal.id, amount)
-    await status_msg.edit_text(SUCCESSFUL_REFPAY.format(referal_id=referal.id, amount=amount))