"""Group model for image grouping."""
import uuid
from datetime import datetime
from sqlalchemy import Column, DateTime, ForeignKey, String, Text
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import relationship

from app.database.base import Base


class Group(Base):
    """Group model for organizing images with annotations."""

    __tablename__ = "groups"

    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    board_id = Column(UUID(as_uuid=True), ForeignKey("boards.id", ondelete="CASCADE"), nullable=False, index=True)
    name = Column(String(255), nullable=False)
    color = Column(String(7), nullable=False)  # Hex color #RRGGBB
    annotation = Column(Text, nullable=True)
    created_at = Column(DateTime, nullable=False, default=datetime.utcnow)
    updated_at = Column(DateTime, nullable=False, default=datetime.utcnow, onupdate=datetime.utcnow)

    # Relationships
    board = relationship("Board", back_populates="groups")
    board_images = relationship("BoardImage", back_populates="group")

    def __repr__(self) -> str:
        return f"<Group(id={self.id}, name={self.name})>"