import uuid
from datetime import datetime
from decimal import Decimal

from sqlalchemy import Boolean, DateTime, Integer, Numeric, String, Text
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import Mapped, mapped_column

from app.db.base import Base


class Currency(Base):
    __tablename__ = "currencies"

    code: Mapped[str] = mapped_column(String(10), primary_key=True)
    name: Mapped[str] = mapped_column(Text, nullable=False)
    symbol: Mapped[str] = mapped_column(String(5), nullable=False)
    is_crypto: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False)
    decimal_places: Mapped[int] = mapped_column(Integer, default=2, nullable=False)
    is_active: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)


class ExchangeRate(Base):
    __tablename__ = "exchange_rates"

    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    base_currency: Mapped[str] = mapped_column(String(10), nullable=False, index=True)
    quote_currency: Mapped[str] = mapped_column(String(10), nullable=False, index=True)
    rate: Mapped[Decimal] = mapped_column(Numeric(20, 10), nullable=False)
    source: Mapped[str] = mapped_column(String(50), nullable=False)
    fetched_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False, index=True)