import enum
import uuid
from datetime import datetime, timezone

from sqlalchemy import Boolean, DateTime, Enum, ForeignKey, Numeric, String, Text, func
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.db.base import Base


class LocationType(str, enum.Enum):
    SONNIG = "sonnig"
    HALBSCHATTEN = "halbschatten"
    SCHATTEN = "schatten"


class SoilType(str, enum.Enum):
    NORMAL = "normal"
    SANDIG = "sandig"
    LEHMIG = "lehmig"
    HUMUSREICH = "humusreich"


class Bed(Base):
    __tablename__ = "beds"

    id: Mapped[uuid.UUID] = mapped_column(
        primary_key=True, default=uuid.uuid4, index=True
    )
    tenant_id: Mapped[uuid.UUID] = mapped_column(
        ForeignKey("tenants.id", ondelete="CASCADE"),
        nullable=False,
        index=True,
    )
    name: Mapped[str] = mapped_column(String(255), nullable=False)
    width_m: Mapped[float] = mapped_column(Numeric(5, 2), nullable=False)
    length_m: Mapped[float] = mapped_column(Numeric(5, 2), nullable=False)
    location: Mapped[LocationType] = mapped_column(
        Enum(LocationType, name="location_type"),
        nullable=False,
    )
    soil_type: Mapped[SoilType] = mapped_column(
        Enum(SoilType, name="soil_type"),
        nullable=False,
        default=SoilType.NORMAL,
    )
    notes: Mapped[str | None] = mapped_column(Text, nullable=True)
    is_active: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)

    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True),
        server_default=func.now(),
        nullable=False,
    )
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True),
        server_default=func.now(),
        onupdate=lambda: datetime.now(timezone.utc),
        nullable=False,
    )

    # Relationships
    tenant: Mapped["Tenant"] = relationship("Tenant", back_populates="beds")  # noqa: F821
    plantings: Mapped[list["BedPlanting"]] = relationship(  # noqa: F821
        "BedPlanting", back_populates="bed", cascade="all, delete-orphan"
    )