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

class ProjectedMarketShareBase(BaseModel):
    project_id : int | None = Field(default=None)
    market_share_estimate : float | None = Field(default=None)
    assumptions : str | None = Field(default=None)
    group_id : int | None = Field(default=None)

class TblProjectedMarketShare(Base):
    __tablename__ = "tbl_projected_market_share"
    project_id : Mapped[int] = mapped_column("project_id", Integer, autoincrement=True, primary_key=True)
    market_share_estimate : Mapped[float] = mapped_column("market_share_estimate", Float, nullable=True, server_default=None)
    assumptions : Mapped[str] = mapped_column("assumptions", 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="projected_market_share")
    
    @classmethod
    def create_project_market(cls, data:ProjectedMarketShareBase, db:Session) ->"TblProjectedMarketShare":
        data_dict = cls(**data.model_dump())
        db.add(data_dict)
        db.flush()
        return data_dict
    
    @classmethod
    def get_projected_market(cls, group_id:int, db:Session) ->"TblProjectedMarketShare":
        get_data = db.query(cls).filter(cls.group_id == group_id).all()
        return get_data
    
    @classmethod
    def update_projected_market(cls, projected_id:int, data:ProjectedMarketShareBase, db:Session) ->"TblProjectedMarketShare":
        update_data = db.query(cls).filter(cls.project_id == projected_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)
        
    @classmethod
    def delete_projected_market(cls, project_id:int, db:Session) ->"TblProjectedMarketShare":
        delete_data = db.query(cls).filter(cls.project_id == project_id).first()
        if not delete_data:
            return False
        db.delete(delete_data)
        db.commit()
        return True