from pydantic import BaseModel, Field
from sqlalchemy import ForeignKey, String
from sqlalchemy.orm import Mapped, mapped_column, relationship, Session
from app.models.main import Base

class AdditionalInstallationBase(BaseModel):

    install_id:int | None = Field(default=None)
    group_id: int | None = Field(default=None)
    name: str | None = Field(default=None)
    description: str | None = Field(default=None)
    cost: int | None = Field(default=None)
    remarks : str | None = Field(default=None)
   
class TblAdditionalInstallation(Base):
    __tablename__ = "tbl_additional_installation"

    install_id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
    group_id: Mapped[int] = mapped_column(ForeignKey("tbl_group.group_id"), nullable=True)
    name: Mapped[str] = mapped_column(String(50), nullable=False)
    description: Mapped[str] = mapped_column(String(50),nullable=False)
    cost: Mapped[int] = mapped_column(nullable=False)
    remarks:Mapped[str] = mapped_column(String(100),nullable=False)
   
    group = relationship("TblGroup", back_populates="additional_install")

    @classmethod
    def create(cls, data:AdditionalInstallationBase, db: Session) -> "TblAdditionalInstallation":
        data_dict = data.model_dump()
        new_entry = cls(**data_dict)
        db.add(new_entry)
        db.flush()
        return new_entry