from typing import Optional
from pydantic import BaseModel, Field
from sqlalchemy.orm import Mapped, mapped_column, Session, relationship
from sqlalchemy import Integer, VARCHAR, ForeignKey
from app.models.base_class import Base

class MarginandSalesContributionAnalysisBase(BaseModel):
    margin_id : Optional[int] = None
    which_category_do_you_think_contributes_more_to_sales : str | None = Field(default=None)
    which_category_do_you_think_contributes_more_to_gross_margins : str | None = Field(default=None)
    which_category_do_you_think_represents_your_store : str | None = Field(default=None)
    group_id : int | None = Field(defualt=None)

class TblMarginandSalesContributionAnalysis(Base):
    __tablename__ = "tbl_margin_and_sales_contribution_analysis"
    margin_id : Mapped[int] = mapped_column("margin_id", Integer, primary_key=True, autoincrement=True)
    which_category_do_you_think_contributes_more_to_sales : Mapped[str] = mapped_column("which_category_do_you_think_contributes_more_to_sales", VARCHAR(255), nullable=True, server_default=None)
    which_category_do_you_think_contributes_more_to_gross_margins: Mapped[str] = mapped_column("which_category_do_you_think_contributes_more_to_gross_margins", VARCHAR(255), nullable=True, server_default=None)
    which_category_do_you_think_represents_your_store: Mapped[str] = mapped_column("which_category_do_you_think_represents_your_store", VARCHAR(255), nullable=True, server_default=None)
    group_id : Mapped[int] = mapped_column("group_id", Integer, ForeignKey("tbl_group.group_id"))
    
    group = relationship("TblGroup", back_populates="margin_and_sales_contribution_analysis")
    
    @classmethod
    def create(cls, data:MarginandSalesContributionAnalysisBase, db:Session) ->"TblMarginandSalesContributionAnalysis":
        create_data = cls(**data.model_dump())
        db.add(create_data)
        db.flush()
        return create_data
    
    @classmethod
    def get(cls, group_id:int, db:Session) ->"TblMarginandSalesContributionAnalysis":
        get_data = db.query(cls).filter(cls.group_id == group_id).all()
        return get_data
    
    @classmethod
    def update(cls, margin_id:int, data:MarginandSalesContributionAnalysisBase, db:Session) ->"TblMarginandSalesContributionAnalysis":
        update_data = db.query(cls).filter(cls.margin_id == margin_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