"""
Folder and SourceRoot model definitions
"""
from sqlalchemy import Column, String, Integer, Boolean, DateTime, ForeignKey, Index
from sqlalchemy.sql import func
from sqlalchemy.orm import relationship
import uuid

from app.database import Base

class SourceRoot(Base):
    __tablename__ = 'source_roots'
    
    id = Column(String, primary_key=True, default=lambda: str(uuid.uuid4()))
    name = Column(String, nullable=False)
    path = Column(String, unique=True, nullable=False)
    is_active = Column(Boolean, default=True)
    added_at = Column(DateTime, server_default=func.now())
    
    # Relationships
    folders = relationship("Folder", back_populates="source_root")

class Folder(Base):
    __tablename__ = 'folders'
    
    id = Column(String, primary_key=True, default=lambda: str(uuid.uuid4()))
    name = Column(String, nullable=False)
    path = Column(String, unique=True, nullable=False)
    parent_id = Column(String, ForeignKey('folders.id'))
    source_root_id = Column(String, ForeignKey('source_roots.id'))
    photo_count = Column(Integer, default=0)
    last_scanned = Column(DateTime)
    
    # Relationships
    source_root = relationship("SourceRoot", back_populates="folders")
    photos = relationship("Photo", backref="folder")
    
    # Indexes
    __table_args__ = (
        Index('ix_folders_path', 'path'),
        Index('ix_folders_parent_id', 'parent_id'),
        Index('ix_folders_source_root_id', 'source_root_id'),
    )