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

class AdditionalInstallationBase(BaseModel):
    
    additional_id : int | None = Field(default=None)
    name : str | None = Field(default=None)
    description : str | None = Field(default=None)
    cost_per_unit : int | None = Field(default=None)
    remark : str | None = Field(default=None)
    group_id : int | None = Field(default=None) 
    
    
class TblAdditionalInstallation(Base):
    __tablename__ = "tbl_additional_installation"
    
    additional_id : Mapped[int] = mapped_column("additional_id", Integer, primary_key=True, autoincrement=True)
    name : Mapped[str] = mapped_column("name", VARCHAR(255), nullable=True, server_default=None)
    description : Mapped[str] = mapped_column("description", VARCHAR(255), nullable=True, server_default=None)
    cost_per_unit : Mapped[int] = mapped_column("cost_per_unit", 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"))
    
    group = relationship("TblGroup", back_populates="additional_installation")
    
    @classmethod
    def create_additional_installation(cls, data:AdditionalInstallationBase, db:Session) ->"TblAdditionalInstallation":
        new_data = cls(**data.model_dump())
        db.add(new_data)
        db.flush()
        return new_data
    
    @classmethod
    def get_additional_installation(cls, additional_get_id:int, db:Session) ->"TblAdditionalInstallation":
        get_data = db.query(cls).filter(cls.additional_id == additional_get_id).first()
        return get_data
    
    @classmethod
    def update_additional_installation(cls, additional_update_id:int, data:AdditionalInstallationBase, db:Session) ->"TblAdditionalInstallation":
        update_data = db.query(cls).filter(cls.additional_id == additional_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_additional_installation(cls, group_id:int, db:Session) ->"TblAdditionalInstallation":
        delete_data = db.query(cls).filter(cls.group_id == group_id).all()
        if not delete_data:
            return False
        for delete in delete_data:
            db.delete(delete)
            db.commit()
        return True