from datetime import datetime
from decimal import Decimal
from sqlalchemy import String, Text, Numeric, ForeignKey, DateTime, func
from sqlalchemy.orm import Mapped, mapped_column, relationship
from app.database import Base


class Location(Base):
    __tablename__ = "locations"

    id: Mapped[int] = mapped_column(primary_key=True)
    user_id: Mapped[int | None] = mapped_column(ForeignKey("users.id"), nullable=True)  # None = system location
    name: Mapped[str] = mapped_column(String(200), nullable=False)
    type: Mapped[str | None] = mapped_column(String(50))   # store, bank, atm, online, other
    address: Mapped[str | None] = mapped_column(Text)
    city: Mapped[str | None] = mapped_column(String(100))
    country: Mapped[str | None] = mapped_column(String(100))
    latitude: Mapped[Decimal | None] = mapped_column(Numeric(9, 6))
    longitude: Mapped[Decimal | None] = mapped_column(Numeric(9, 6))
    parent_id: Mapped[int | None] = mapped_column(ForeignKey("locations.id"), nullable=True)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())

    user: Mapped["User | None"] = relationship("User", back_populates="locations")
    parent: Mapped["Location | None"] = relationship("Location", remote_side="Location.id", back_populates="children")
    children: Mapped[list["Location"]] = relationship("Location", back_populates="parent")
    operations: Mapped[list] = relationship("Operation", back_populates="location")