from fastapi import HTTPException
from sqlalchemy import Column, Integer, String, Float, Boolean, ForeignKey
from sqlalchemy.dialects.postgresql import ARRAY
from sqlalchemy.orm import Session, relationship, mapped_column, Mapped
from ..config import Base, get_session_db, user_collection, collection_item
from typing import TYPE_CHECKING

if TYPE_CHECKING:
    from ..auth.models import DBUser
    from ..items.models import Items




##### veri tabanı modelleri #####
class CollectionsDB(Base):
    __tablename__ = "collections_table"

    collection_id : Mapped[int] = mapped_column(Integer, primary_key=True)
    #user_id : Mapped[int] = mapped_column(Integer, ForeignKey("users_table.user_id"), nullable=False) # user_id ile ilişki
    #item_id : Mapped[list[int]] = mapped_column(Integer, ForeignKey("items_table.item_id"), nullable=False) # item_id ile ilişki
    visibility : Mapped[bool] = mapped_column(Boolean, default=True)
    collection_name : Mapped[str] = mapped_column(String, nullable=False)
    collection_description : Mapped[str] = mapped_column(String, default="No description")

    # ilişkiler
    users : Mapped['DBUser'] = relationship(
        "DBUser",
        secondary=user_collection, 
        back_populates="collections", 
        lazy='select'
    ) #back_populates karşı tarafın ismi

    items : Mapped[list['Items']] = relationship(
        "Items",
        secondary=collection_item,
        back_populates="collections" ,
        lazy='select'
    )


    #### collection bir item listesi birde kullanıcı listesi tutacak