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

class AnnexuresBase(BaseModel):
    annexures_id : int | None = Field(default=None)
    assumptions : str | None = Field(default=None)
    source : str | None = Field(default=None)
    group_id : int | None = Field(default=None)

class TblAnnexures(Base):
    __tablename__ = "tbl_annexures"
    annexures_id : Mapped[int] = mapped_column("annexures_id", Integer, primary_key=True, autoincrement=True)
    assumptions : Mapped[str] = mapped_column("assumptions", Text, nullable=True, server_default=None)
    source : Mapped[str] = mapped_column("source", Text, nullable=True, server_default=None)
    group_id : Mapped[int] = mapped_column("group_id", Integer, ForeignKey("tbl_group.group_id"))
    
    group = relationship("TblGroup", back_populates="annexures")
    
    @classmethod
    def create_annexures(cls, data:AnnexuresBase, db:Session) ->"TblAnnexures":
        data_dict = cls(**data.model_dump())
        db.add(data_dict)
        db.flush()
        return data_dict
    
    @classmethod
    def get_annuexures(cls, group_id:int, db:Session) ->"TblAnnexures":
        get_data = db.query(cls).filter(cls.group_id == group_id).all()
        return get_data
    
    @classmethod
    def update_annuexures(cls, update_id:int, data:AnnexuresBase, db:Session) ->"TblAnnexures":
        update_data = db.query(cls).filter(cls.annexures_id == 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_annexures(cls, annexures_id:int, db:Session) ->"TblAnnexures":
        delete_data = db.query(cls).filter(cls.annexures_id == annexures_id).first()
        if not delete_data:
            return False
        db.delete(delete_data)
        db.commit()
        return True