from pydantic import BaseModel, Field
from sqlalchemy.orm import Mapped, mapped_column, relationship, Session
from sqlalchemy import Integer, Enum, ForeignKey, Text
from app.models.base_class import Base
from enum import Enum as PyEnum

class BrandingAttributesBase(BaseModel):
    brand_id : int | None = Field(default=None)
    attributes : str | None = Field(default=None)
    reference_retailer_1 : str | None = Field(default=None)
    reference_retailer_2 : str | None = Field(default=None)
    own_brand : str | None = Field(default=None)
    group_id : int | None = Field(default=None)

class CategoryEnum(str, PyEnum):
    GROCERIES = "Groceries"
    ELECTRONICS = "Electronics"
    CLOTHING = "Clothing"
    HOME_GOODS = "Home Goods"
    TOYS = "Toys"
    SPORTS_EQUIPMENT = "Sports Equipment"
    BEAUTY_PRODUCTS = "Beauty Products"
    PHARMACY = "Pharmacy"
    PET_SUPPLIES = "Pet Supplies"

class TblBrandingAttributes(Base):
    __tablename__ = "tbl_branding attributes"
    brand_id : Mapped[int] = mapped_column("brand_id", Integer, primary_key=True, autoincrement=True)
    attributes : Mapped[str] = mapped_column("attributes", Enum(CategoryEnum))
    reference_retailer_1 : Mapped[str] = mapped_column("reference_retailer_1", Text, nullable=True, server_default=None)
    reference_retailer_2 : Mapped[str] = mapped_column("reference_retailer_2", Text, nullable=True, server_default=None)
    own_brand : Mapped[str] = mapped_column("own_brand", Text, nullable=True, server_default=None)
    group_id : Mapped[str] = mapped_column("group_id", ForeignKey("tbl_group.group_id"))
    
    group = relationship("TblGroup", back_populates="brand_attributes")
    
    @classmethod
    def create_branding_attributes(cls, data:BrandingAttributesBase, db:Session) ->"TblBrandingAttributes":
        data_dict = cls(**data.model_dump())
        db.add(data_dict)
        db.flush()
        return data_dict
    
    @classmethod
    def get_branding_attributes(cls, group_id:int, db:Session) ->"TblBrandingAttributes":
        get_data = db.query(cls).filter(cls.group_id == group_id).all()
        return get_data
    
    @classmethod
    def update_branding_attributes(cls, update_id:int, data:BrandingAttributesBase, db:Session) ->"TblBrandingAttributes":
        update_data = db.query(cls).filter(cls.brand_id == update_id).first()
        data_dict = data.model_dump()
        for key, value in data_dict.items():
            if value is not None:
                setattr(update_data, key, value)
        db.commit()
        db.refresh(update_data)
        return update_data
    
    @classmethod
    def delete_branding_attributes(cls, brand_id:int, db:Session) ->"TblBrandingAttributes":
        delete_data = db.query(cls).filter(cls.brand_id == brand_id).first()
        if not delete_data:
            return False
        db.delete(delete_data)
        db.commit()
        return True