import uuid

from app.extensions import db

# Association table N:N between Property and Amenity — no model class needed
property_amenity = db.Table(
    "property_amenity",
    db.Column(
        "property_id",
        db.UUID(as_uuid=True),
        db.ForeignKey("properties.id", ondelete="CASCADE"),
        primary_key=True,
    ),
    db.Column(
        "amenity_id",
        db.Integer,
        db.ForeignKey("amenities.id", ondelete="CASCADE"),
        primary_key=True,
    ),
)


class PropertyType(db.Model):
    """Hierarchical property type: Residencial > Apartamento"""

    __tablename__ = "property_types"

    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
    name = db.Column(db.String(100), nullable=False)
    slug = db.Column(db.String(120), unique=True, nullable=False, index=True)
    parent_id = db.Column(
        db.Integer,
        db.ForeignKey("property_types.id", ondelete="SET NULL"),
        nullable=True,
        index=True,
    )

    # Self-referential relationship
    subtypes = db.relationship(
        "PropertyType",
        backref=db.backref("parent", remote_side=[id]),
        lazy="select",
    )

    def __repr__(self) -> str:
        return f"<PropertyType {self.slug!r}>"


class Amenity(db.Model):
    """Tagged feature/amenity for a property (characteristic, leisure, condo, security)"""

    __tablename__ = "amenities"

    GROUPS = ("caracteristica", "lazer", "condominio", "seguranca")

    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
    name = db.Column(db.String(100), nullable=False)
    slug = db.Column(db.String(120), unique=True, nullable=False, index=True)
    group = db.Column(
        db.Enum(
            "caracteristica", "lazer", "condominio", "seguranca", name="amenity_group"
        ),
        nullable=False,
    )

    def __repr__(self) -> str:
        return f"<Amenity {self.slug!r} group={self.group!r}>"