from fastapi import HTTPException
from pydantic import Field
from sqlalchemy import INTEGER, VARCHAR, ForeignKey, Text
from sqlalchemy.orm import Mapped, Session, mapped_column, relationship

from app.models.main import Base
from app.utils.schemas_utils import CustomModel


class BrandBase(CustomModel):
    __tablename__ = "tbl_brand"

    brand_id: int | None = Field(default=None)
    brand_name: str | None = Field(default=None)
    brand_image: str | None = Field(default=None)
    rationale: str | None = Field(default=None)
    group_id: int | None = Field(default=None)
   
class TblBrand(Base):
    __tablename__ = "tbl_brand"

    brand_id: Mapped[int] = mapped_column("brand_id", INTEGER, primary_key=True, autoincrement=True)
    brand_name: Mapped[str] = mapped_column("brand_name", VARCHAR(255), nullable=True)
    brand_image: Mapped[str] = mapped_column("brand_image", VARCHAR(255), nullable=True)
    rationale: Mapped[str] = mapped_column("rationale", Text, nullable=True)
    group_id: Mapped[int] = mapped_column("group_id", INTEGER, ForeignKey("tbl_group.group_id"), nullable=False)
    #group:Mapped["TblGroup"]=relationship
    
    group = relationship("TblGroup", back_populates="brands")

    @classmethod
    def create(cls, data: BrandBase, db: Session) -> "TblBrand":
        data_dict = data.model_dump()
        new_data = cls(**data_dict)
        db.add(new_data)
        db.flush()
        return new_data
    
    @classmethod
    def get_usr_id(cls, brand_id: int, db: Session) -> "TblBrand":
        get_data = db.query(cls).filter(cls.brand_id == brand_id).first()
        if not get_data:
            raise HTTPException(status_code=404, detail="User not found")
        return get_data

    @classmethod
    def update(cls, brand_id: int, data: BrandBase, db: Session) -> "TblBrand":
        get_data = db.query(cls).filter(cls.brand_id == brand_id).first()
        if not get_data:
            raise HTTPException(status_code=404, detail="User not found")
        data_dict = data.model_dump()
        for key, value in data_dict.items():
            setattr(get_data, key, value)
        db.add(get_data)
        db.flush()
        return get_data
    
    @classmethod
    def delete(cls, brand_id: int, db: Session) -> bool:
        obj = db.query(cls).filter(cls.brand_id == brand_id).first()
        if not obj:
            return False
        obj.brand_image = None
        # db.delete(obj)
        db.commit()
        return True