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


class CategoryPricingStrategisBase(BaseModel):
    category_id : int | None = Field(default=None)
    category : str | None = Field(default=None)
    pricing_strategis : str | None = Field(default=None)
    rational : str | None = Field(default=None)
    specify_other_strategy : str | None = Field(default=None)
    # is_deleted : int | None = Field(default=None)
    group_id : int | None = Field(default=None)
    

class PricingStrategisEnum(str, PyEnum):
    EVERYDAY_LOW_PRICE = "Everyday Low Price"
    HIGH_LOW = "High-Low"
    OTHERS = "Others"

class TblCategoryPricingStrategis(Base):
    __tablename__ = "tbl_category_pricing_strategis"
    category_id : Mapped[int] = mapped_column("category_id", Integer, primary_key=True, autoincrement=True)
    category : Mapped[str] = mapped_column("category", VARCHAR(255), nullable=True, server_default=None)
    pricing_strategis : Mapped[str] = mapped_column("pricing_strategis",Enum(PricingStrategisEnum))
    rational : Mapped[str] = mapped_column("rational", VARCHAR(255), nullable=True, server_default=None)
    specify_other_strategy : Mapped[str] = mapped_column("specify_other_strategy", VARCHAR(255), nullable=True, server_default=None)
    # is_deleted : Mapped[int] = mapped_column("is_deleted", Integer, default=0)
    group_id : Mapped[int] = mapped_column("group_id", Integer, ForeignKey("tbl_group.group_id"))
     
    group = relationship("TblGroup", back_populates="category_pricing_strategis")
    
    @classmethod
    def create_category_pricing_strategis(cls, data:CategoryPricingStrategisBase, db:Session) ->"TblCategoryPricingStrategis":
        data_dict = cls(**data.model_dump())
        db.add(data_dict)
        db.flush()
        return data_dict
    
    @classmethod
    def get_category_pricing_strategis(cls, group_id:int, db:Session) ->"TblCategoryPricingStrategis":
        get_data = db.query(cls).filter(cls.group_id == group_id).all()
        return get_data
    
    @classmethod
    def update_category_pricing_strategis(cls, update_id:int, data:CategoryPricingStrategisBase, db:Session) ->"TblCategoryPricingStrategis":
        update_data = db.query(cls).filter(cls.category_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_category_pricing_strategis(cls, category_id:int, db:Session) ->"TblCategoryPricingStrategis":
        delete_data = db.query(cls).filter(cls.category_id == category_id).first()
        if not delete_data:
            return False
        db.delete(delete_data)
        db.commit()
        return True