from typing import Literal
from pydantic import BaseModel, Field
from app.models.base_class import Base
from sqlalchemy.orm import Mapped,mapped_column,relationship,Session
from sqlalchemy import DOUBLE, ForeignKey, Integer,VARCHAR,Enum, String, Text

class InfoTechBase(BaseModel):
    
    infotech_id : int | None = Field(default=None)
    type : str | None = Field(default=None)
    units : float | None = Field(default=None)
    cost_per_unit : float | None = Field(default=None)
    total : float | None = Field(default=None)
    store_format_type : Literal["Store Format A", "Store Format B"] = "Store Format A"
    other_catrgory : str | None = Field(default=None)
    remark : str | None = Field(default=None)
    group_id : int | None = Field(default=None)
    

class TblInfoTech(Base):
    
    __tablename__ = "tbl_infotech"
    
    infotech_id : Mapped[int] = mapped_column("infotech_id", Integer, primary_key=True, autoincrement=True)
    type : Mapped[str] = mapped_column("type", VARCHAR(255), nullable=True, server_default=None)
    units : Mapped[float] = mapped_column("units", DOUBLE,nullable=True, server_default=None)
    cost_per_unit : Mapped[float] = mapped_column("cost_per_unit", DOUBLE, nullable=True, server_default=None)
    total : Mapped[float] = mapped_column("total", DOUBLE, nullable=True, server_default=None)
    store_format_type : Mapped[str] = mapped_column(Enum("Store Format A", "Store Format B"))
    remark : Mapped[str] = mapped_column("remark", Text, nullable=True, server_default=None)
    other_catrgory : Mapped[str] = mapped_column("other_catrgory", VARCHAR(255), nullable=True, server_default=None)
    group_id : Mapped[int] = mapped_column("group_id", Integer, ForeignKey("tbl_group.group_id"), nullable=True)
    
    group = relationship("TblGroup", back_populates="info_tech")
    
    @classmethod
    def create(cls, data:InfoTechBase, db:Session) ->"TblInfoTech":
        data_dict = data.model_dump()
        new_data = cls(**data_dict)
        db.add(new_data)
        db.flush()
        return new_data
    
    @classmethod
    def get_info_tech_data(cls, group_id:int, db:Session) ->"TblInfoTech":
        get_data = db.query(cls).filter(cls.group_id == group_id).all()
        return get_data
    
    @classmethod
    def update_info_tech(cls, info_tech_update_id:int, data:InfoTechBase, db:Session) ->"TblInfoTech":
        update_data = db.query(cls).filter(cls.infotech_id == info_tech_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_info_tech(cls, info_tech_delete_id:int, db:Session) ->"TblInfoTech":
        delete_data = db.query(cls).filter(cls.infotech_id == info_tech_delete_id).first()
        if not delete_data:
            return False
        db.delete(delete_data)
        db.commit()
        return True