45 lines
1.5 KiB
Python
45 lines
1.5 KiB
Python
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from datetime import UTC, datetime
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from sqlalchemy import DateTime, Integer
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from sqlalchemy.orm import Mapped, mapped_column
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from database import Base
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class PricingConfig(Base):
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"""Pricing configuration for exchange trades.
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Singleton pattern: Only one record should exist in the database.
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Updates modify the existing record rather than creating new ones.
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"""
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__tablename__ = "pricing_config"
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id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
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# Premium settings
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premium_buy: Mapped[int] = mapped_column(Integer, nullable=False) # -100 to 100
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premium_sell: Mapped[int] = mapped_column(Integer, nullable=False) # -100 to 100
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small_trade_threshold_eur: Mapped[int] = mapped_column(
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Integer, nullable=False
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) # EUR cents, e.g., 20000 = €200
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small_trade_extra_premium: Mapped[int] = mapped_column(
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Integer, nullable=False
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) # -100 to 100
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# Trade amount limits (EUR cents)
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eur_min_buy: Mapped[int] = mapped_column(Integer, nullable=False)
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eur_max_buy: Mapped[int] = mapped_column(Integer, nullable=False)
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eur_min_sell: Mapped[int] = mapped_column(Integer, nullable=False)
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eur_max_sell: Mapped[int] = mapped_column(Integer, nullable=False)
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# Timestamps
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created_at: Mapped[datetime] = mapped_column(
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DateTime(timezone=True), default=lambda: datetime.now(UTC)
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)
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updated_at: Mapped[datetime] = mapped_column(
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DateTime(timezone=True),
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default=lambda: datetime.now(UTC),
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onupdate=lambda: datetime.now(UTC),
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)
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