3a29a346a9
* Created FastAPI application structure * Added database models for assets, exchanges, markets, and rates * Integrated with CoinCap API * Implemented REST API endpoints * Setup SQLite persistence with Alembic migrations * Added comprehensive documentation Generated with BackendIM... (backend.im)
46 lines
1.5 KiB
Python
46 lines
1.5 KiB
Python
from sqlalchemy import Column, String, Float, Integer, DateTime, ForeignKey
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from sqlalchemy.orm import relationship
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from datetime import datetime
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from app.core.database import Base
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class Asset(Base):
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__tablename__ = "assets"
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id = Column(String, primary_key=True, index=True) # Slug (e.g., "bitcoin")
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rank = Column(Integer)
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symbol = Column(String, index=True)
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name = Column(String, index=True)
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supply = Column(Float)
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max_supply = Column(Float, nullable=True)
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market_cap_usd = Column(Float)
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volume_usd_24hr = Column(Float)
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price_usd = Column(Float)
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change_percent_24hr = Column(Float, nullable=True)
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vwap_24hr = Column(Float, nullable=True)
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explorer = Column(String, nullable=True)
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# Last updated timestamp
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last_updated = Column(DateTime, default=datetime.utcnow)
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# Relationships
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price_history = relationship("AssetPriceHistory", back_populates="asset", cascade="all, delete-orphan")
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def __repr__(self):
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return f"<Asset {self.symbol}: {self.name}>"
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class AssetPriceHistory(Base):
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__tablename__ = "asset_price_history"
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id = Column(Integer, primary_key=True, index=True)
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asset_id = Column(String, ForeignKey("assets.id", ondelete="CASCADE"), index=True)
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price_usd = Column(Float)
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timestamp = Column(DateTime, index=True)
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# Relationships
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asset = relationship("Asset", back_populates="price_history")
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def __repr__(self):
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return f"<AssetPriceHistory {self.asset_id}: {self.price_usd} at {self.timestamp}>" |