from typing import List
from typing import Optional
from sqlalchemy import String
from sqlalchemy.orm import Mapped
from sqlalchemy.orm import mapped_column
from sqlalchemy.orm import relationship

from .base import Base

class Library(Base):
    __tablename__ = "library"
    id: Mapped[int] = mapped_column(primary_key=True)
    name: Mapped[str] = mapped_column(String(255), unique=True)
    notes: Mapped[Optional[str]] = mapped_column(String(65656))
    
    envs: Mapped[List["Env"]] = relationship(
        back_populates="library", cascade="all, delete-orphan"
    )

    paths: Mapped[List["Path"]] = relationship(
        back_populates="library", cascade="all, delete-orphan"
    )

    books: Mapped[List["Book"]] = relationship(
        back_populates="library", cascade="all, delete-orphan"
    )

    tags: Mapped[List["Tag"]] = relationship(
        back_populates="library", cascade="all, delete-orphan"
    )

    def to_dict(self) -> dict:
        return {
            "id": self.id,
            "name": self.name,
            "notes": self.notes
        }

    def __repr__(self) -> str:
        return f"Library(id={self.id!r}, name={self.name!r}, notes={self.notes!r})"