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

class DepreciationBase(BaseModel):
    depreciation_id : int | None = Field(default=None)
    depreciation_method : str | None = Field(default=None)
    depreciation_years : int | None = Field(default=None)
    remark : str | None = Field(default=None)
    group_id : int | None = Field(default=None)
    
class TblDepreciation(Base):
    
    __tablename__ = "tbl_depreciation"
    
    depreciation_id : Mapped[int] = mapped_column("depreciation_id", Integer, primary_key=True, autoincrement=True)
    depreciation_method : Mapped[str] = mapped_column("depreciation_method", VARCHAR(255), nullable=True, server_default=None)
    depreciation_years : Mapped[int] = mapped_column("depreciation_years", Integer, nullable=True, server_default=None)
    remark : Mapped[str] = mapped_column("remark", VARCHAR(255), nullable=True, server_default=None)
    group_id : Mapped[int] = mapped_column("group_id", Integer, ForeignKey("tbl_group.group_id"), nullable=False)
    
    group = relationship("TblGroup", back_populates="depreciation")
    
    @classmethod
    def create(cls, data:DepreciationBase, db:Session) ->"TblDepreciation":
        new_data = cls(**data.model_dump())
        db.add(new_data)
        db.flush()
        return new_data
    
    @classmethod
    def get_depreciation_data(cls, depreciation_get_id:int, db:Session) ->"TblDepreciation":
        get_data = db.query(cls).filter(cls.depreciation_id == depreciation_get_id).first()
        return get_data
    
    @classmethod
    def update_depreciation(cls, depreciation_update_id:int, data:DepreciationBase, db:Session) ->"TblDepreciation":
        update_data = db.query(cls).filter(cls.depreciation_id == depreciation_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_depreciation_data(cls, depreciation_delete_id:int, db:Session) ->"TblDepreciation":
        delete_data = db.query(cls).filter(cls.depreciation_id == depreciation_delete_id).first()
        if not delete_data:
            return False
        db.delete(delete_data)
        db.commit()
        return True