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VPN SaaS Dev
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app/db/__init__.py
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app/db/__init__.py
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app/db/base.py
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app/db/base.py
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from sqlalchemy.orm import DeclarativeBase
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class Base(DeclarativeBase):
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pass
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app/db/seed.py
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app/db/seed.py
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import asyncio
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from datetime import date
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from decimal import Decimal
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from sqlalchemy import delete, select
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from sqlalchemy.ext.asyncio import AsyncSession
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from sqlalchemy.orm import selectinload
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from app.db.session import async_session_factory
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from app.models.car import Car, CarMake, CarModel
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from app.models.expense import FuelEntry, ServiceEntry, ServiceType
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from app.models.user import User
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from app.services.catalog_data import CAR_CATALOG
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MOCK_PLATE_PREFIX = "MOCK"
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MOCK_CARS = [
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("KIA Sportage", "KIA", "Sportage", 2021, "gasoline", 36200, Decimal("2450000")),
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("Toyota Camry", "Toyota", "Camry", 2020, "gasoline", 58400, Decimal("2850000")),
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("Hyundai Tucson", "Hyundai", "Tucson", 2022, "gasoline", 27100, Decimal("2750000")),
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("Volkswagen Tiguan", "Volkswagen", "Tiguan", 2019, "gasoline", 73400, Decimal("2300000")),
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("BMW X3", "BMW", "X3", 2021, "diesel", 48900, Decimal("4350000")),
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("Mercedes GLC", "Mercedes", "GLC", 2020, "gasoline", 52200, Decimal("4500000")),
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("Nissan X-Trail", "Nissan", "X-Trail", 2018, "gasoline", 91400, Decimal("1850000")),
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("Skoda Octavia", "Skoda", "Octavia", 2021, "gasoline", 46800, Decimal("2050000")),
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("Tesla Model 3", "Tesla", "Model 3", 2022, "electric", 33800, Decimal("3900000")),
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("Haval Jolion", "Haval", "Jolion", 2023, "gasoline", 19600, Decimal("2150000")),
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]
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def month_shift(base: date, months_back: int) -> date:
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month_index = base.year * 12 + base.month - 1 - months_back
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year = month_index // 12
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month = month_index % 12 + 1
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return date(year, month, min(base.day, 24))
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async def seed_catalog(session: AsyncSession) -> None:
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result = await session.execute(select(CarMake).options(selectinload(CarMake.models)))
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existing = {make.name: make for make in result.scalars()}
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for make_name, model_names in CAR_CATALOG.items():
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make = existing.get(make_name)
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if make is None:
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make = CarMake(name=make_name)
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session.add(make)
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await session.flush()
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existing_models = set()
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else:
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existing_models = {model.name for model in make.models}
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for model_name in model_names:
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if model_name not in existing_models:
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session.add(CarModel(make_id=make.id, name=model_name))
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async def pick_owner(session: AsyncSession) -> User:
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result = await session.execute(select(User).where(User.telegram_id == 1))
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user = result.scalar_one_or_none()
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if user:
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return user
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user = User(telegram_id=1, username="demo", first_name="Demo")
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session.add(user)
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await session.flush()
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return user
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async def clear_previous_mock(session: AsyncSession) -> None:
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result = await session.execute(
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select(Car.id).where(Car.plate_number.like(f"{MOCK_PLATE_PREFIX}-%"))
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)
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car_ids = list(result.scalars())
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if not car_ids:
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return
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await session.execute(delete(ServiceEntry).where(ServiceEntry.car_id.in_(car_ids)))
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await session.execute(delete(FuelEntry).where(FuelEntry.car_id.in_(car_ids)))
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await session.execute(delete(Car).where(Car.id.in_(car_ids)))
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async def seed_mock_usage(session: AsyncSession, owner: User) -> None:
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await clear_previous_mock(session)
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today = date.today()
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for index, (name, make, model, year, fuel_type, start_odo, price) in enumerate(MOCK_CARS, start=1):
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car = Car(
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owner_id=owner.id,
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name=name,
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make=make,
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model=model,
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year=year,
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plate_number=f"{MOCK_PLATE_PREFIX}-{index:02d}",
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fuel_type=fuel_type,
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purchase_date=date(year, min(index, 12), 10),
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purchase_price=price,
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current_odometer=start_odo,
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)
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session.add(car)
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await session.flush()
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odometer = start_odo
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monthly_km = 820 + index * 95
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consumption = Decimal("7.2") + Decimal(index % 5) * Decimal("0.45")
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if fuel_type == "electric":
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consumption = Decimal("0")
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for months_back in range(11, -1, -1):
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base_day = month_shift(today.replace(day=15), months_back)
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odometer += monthly_km
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if fuel_type == "electric":
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energy_cost = Decimal(110 + index * 8 + months_back % 3 * 15)
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session.add(
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ServiceEntry(
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car_id=car.id,
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entry_date=base_day,
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odometer=odometer,
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service_type=ServiceType.other,
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title="Зарядка и парковка",
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category="charging",
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vendor="EV network",
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total_cost=energy_cost,
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)
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)
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else:
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liters_per_month = Decimal(monthly_km) * consumption / Decimal(100)
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price_per_liter = Decimal("58.50") + Decimal(index % 4) * Decimal("2.10")
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for fill in range(2):
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fill_date = date(base_day.year, base_day.month, 8 if fill == 0 else 22)
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liters = (liters_per_month / 2).quantize(Decimal("0.001"))
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session.add(
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FuelEntry(
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car_id=car.id,
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entry_date=fill_date,
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odometer=odometer - (monthly_km // 2 if fill == 0 else 0),
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liters=liters,
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price_per_liter=price_per_liter,
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total_cost=(liters * price_per_liter).quantize(Decimal("0.01")),
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station=["Shell", "Lukoil", "Gazprom", "Rosneft", "Neste"][index % 5],
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is_full_tank=True,
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)
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)
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if months_back in {11, 5}:
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session.add(
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ServiceEntry(
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car_id=car.id,
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entry_date=date(base_day.year, base_day.month, 12),
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odometer=odometer,
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service_type=ServiceType.maintenance,
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title="Плановое ТО",
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category="regular",
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vendor="Service center",
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total_cost=Decimal(12500 + index * 950),
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next_due_odometer=odometer + 10000,
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)
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)
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if months_back in {8, 2}:
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session.add(
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ServiceEntry(
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car_id=car.id,
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entry_date=date(base_day.year, base_day.month, 18),
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odometer=odometer,
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service_type=ServiceType.tire,
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title="Сезонная замена шин",
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category="tires",
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vendor="Tire shop",
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total_cost=Decimal(4200 + index * 180),
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)
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)
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if months_back == 6:
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session.add(
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ServiceEntry(
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car_id=car.id,
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entry_date=date(base_day.year, base_day.month, 20),
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odometer=odometer,
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service_type=ServiceType.insurance,
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title="ОСАГО / страховка",
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category="insurance",
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vendor="Insurance",
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total_cost=Decimal(18200 + index * 1150),
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)
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)
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if months_back == index % 10:
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session.add(
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ServiceEntry(
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car_id=car.id,
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entry_date=date(base_day.year, base_day.month, 25),
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odometer=odometer,
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service_type=ServiceType.repair,
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title=["Тормозные колодки", "Диагностика подвески", "Замена АКБ", "Ремонт кондиционера"][index % 4],
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category="repair",
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vendor="Garage",
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total_cost=Decimal(7200 + index * 1350),
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)
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)
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car.current_odometer = odometer
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async def main() -> None:
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async with async_session_factory() as session:
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await seed_catalog(session)
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owner = await pick_owner(session)
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await seed_mock_usage(session, owner)
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await session.commit()
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print(f"Seeded catalog and mock usage for owner_id={owner.id}")
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if __name__ == "__main__":
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asyncio.run(main())
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13
app/db/session.py
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app/db/session.py
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@@ -0,0 +1,13 @@
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from collections.abc import AsyncGenerator
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from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
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from app.core.config import settings
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engine = create_async_engine(settings.database_url, pool_pre_ping=True)
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async_session_factory = async_sessionmaker(engine, expire_on_commit=False)
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async def get_session() -> AsyncGenerator[AsyncSession, None]:
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async with async_session_factory() as session:
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yield session
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