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

class ShrinkageAreasReasonsBase(BaseModel):
    shrinkage_id : int | None = Field(default=None)
    shrinkage : float | None = Field(default=None)
    shrinkage_do_you_envision : str | None = Field(default=None)
    shrinkage_in_your_stores : str | None = Field(default=None)
    group_id : int | None = Field(default=None)

class TblShrinkageAreasReasons(Base):
    __tablename__ = "tbl_shrinkage_areas_reasons"
    
    shrinkage_id : Mapped[int] = mapped_column("shrinkage_id", Integer, primary_key=True, autoincrement=True)
    shrinkage : Mapped[float] = mapped_column("shrinkage", Float, nullable=True, server_default=None)
    shrinkage_do_you_envision : Mapped[str] = mapped_column("shrinkage_do_you_envision", VARCHAR(255), nullable=True, server_default=None)
    shrinkage_in_your_stores : Mapped[str] = mapped_column("shrinkage_in_your_storesshrinkage_in_your_stores", 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", ForeignKey("tbl_group.group_id"))
    
    group = relationship("TblGroup", back_populates="shrinkage_areas_reasons")
    
    @classmethod
    def create_shrinkage_areas_reasons(cls, data:ShrinkageAreasReasonsBase, db:Session) ->"TblShrinkageAreasReasons":
        data_dict = data.model_dump()
        new_data = cls(**data_dict)
        db.add(new_data)
        db.flush()
        return new_data
    
    @classmethod
    def get_shrinkage_areas_reasons(cls, group_id:int, db:Session) ->"TblShrinkageAreasReasons":
        get_data = db.query(cls).filter(cls.group_id == group_id).all()
        return get_data
    
    @classmethod
    def update_shrinkage_areas_reasons(cls, shrinkage_update_id:int, data:ShrinkageAreasReasonsBase, db:Session) ->"TblShrinkageAreasReasons":
        update_data = db.query(cls).filter(cls.shrinkage_id == shrinkage_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_shrinkage_areas_reasons(cls, shrinkage_id:int, db:Session) ->"TblShrinkageAreasReasons":
        delete_data = db.query(cls).filter(cls.shrinkage_id == shrinkage_id).first()
        if not delete_data:
            return False
        delete_data.is_deleted = 1
        db.commit()
        return True