import uuid
from datetime import datetime
from sqlalchemy import String, DateTime, Float, Boolean, Text, ForeignKey, Date, func
from sqlalchemy.orm import Mapped, mapped_column, relationship
from app.database import Base


class Farm(Base):
    __tablename__ = "farms"
    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()))
    farmer_id: Mapped[str] = mapped_column(String(36), ForeignKey("farmer_profiles.id"))
    name: Mapped[str] = mapped_column(String(100))
    area: Mapped[float | None] = mapped_column(Float, nullable=True)
    address: Mapped[str | None] = mapped_column(Text, nullable=True)
    latitude: Mapped[float | None] = mapped_column(Float, nullable=True)
    longitude: Mapped[float | None] = mapped_column(Float, nullable=True)
    soil_type: Mapped[str | None] = mapped_column(String(50), nullable=True)
    irrigation_type: Mapped[str | None] = mapped_column(String(50), nullable=True)
    farming_type: Mapped[str | None] = mapped_column(String(50), nullable=True)
    notes: Mapped[str | None] = mapped_column(Text, nullable=True)
    is_active: Mapped[bool] = mapped_column(default=True)
    created_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now())
    updated_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now(), onupdate=func.now())

    farmer = relationship("FarmerProfile", back_populates="farms")
    fields = relationship("FarmField", back_populates="farm", cascade="all, delete-orphan")


class FarmField(Base):
    __tablename__ = "farm_fields"
    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()))
    farm_id: Mapped[str] = mapped_column(String(36), ForeignKey("farms.id"))
    name: Mapped[str] = mapped_column(String(100))
    area: Mapped[float | None] = mapped_column(Float, nullable=True)
    crop_type: Mapped[str | None] = mapped_column(String(100), nullable=True)
    plant_count: Mapped[int] = mapped_column(default=0)
    latitude: Mapped[float | None] = mapped_column(Float, nullable=True)
    longitude: Mapped[float | None] = mapped_column(Float, nullable=True)
    soil_type: Mapped[str | None] = mapped_column(String(50), nullable=True)
    irrigation_type: Mapped[str | None] = mapped_column(String(50), nullable=True)
    planting_date: Mapped[datetime | None] = mapped_column(Date, nullable=True)
    status: Mapped[str] = mapped_column(String(20), default="active")
    created_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now())
    updated_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now(), onupdate=func.now())

    farm = relationship("Farm", back_populates="fields")