from pydantic import BaseModel, Field
from sqlalchemy import DOUBLE, INTEGER, VARCHAR, TEXT, Enum, ForeignKey
from sqlalchemy.orm import Mapped, Session, mapped_column, relationship
from app.models.main import Base
from enum import Enum as PyEnum

class CivilBase(BaseModel):
    civil_id: int | None = Field(default=None)
    group_id: int | None = Field(default=None)
    store_format_type: str | None = Field(default=None)
    type_of_civil_work: str | None = Field(default=None)
    rate_per_sqft: float | None = Field(default=None)
    total_sqft: float | None = Field(default=None)
    remarks: str | None = Field(default=None)
    
class StoreFormatType(str, PyEnum):
    STORE_FORMAT_A = "Store Format A"
    STORE_FORMAT_B = "Store Format B"
    

class TblCivil(Base):
    __tablename__ = "tbl_civil"

    civil_id: Mapped[int] = mapped_column("civil_id", INTEGER, primary_key=True, autoincrement=True)
    group_id: Mapped[int] = mapped_column(INTEGER, ForeignKey("tbl_group.group_id"), nullable=True)
    type_of_civil_work: Mapped[str] = mapped_column(VARCHAR(255), nullable=True)
    store_format_type : Mapped[str] = mapped_column("store_format_type", Enum(StoreFormatType))
    rate_per_sqft: Mapped[float] = mapped_column("rate_per_sqft", DOUBLE, nullable=True)
    total_sqft: Mapped[float] = mapped_column("total_sqft", DOUBLE, nullable=True)
    remarks: Mapped[str] = mapped_column(TEXT, nullable=True)
    
    group = relationship("TblGroup", back_populates="civils")

    @classmethod
    def create(cls, data: CivilBase, db: Session) -> "TblCivil":
        data_dict = data.model_dump()
        new_data = cls(**data_dict)
        db.add(new_data)
        db.flush()
        return new_data
    
    @classmethod
    def get_civil(cls, group_id: int, db: Session) -> "TblCivil | None":
        return db.query(cls).filter(cls.group_id == group_id).all()
    
    @classmethod
    def update(cls, civil_id: int, data: CivilBase, db: Session):
        get_data = db.query(cls).filter(cls.civil_id == civil_id).first()
        if not get_data:
            return None
        for key, value in data.model_dump(exclude_unset=True).items():
            setattr(get_data, key, value)
        db.flush() 
        return get_data

    
    # @classmethod
    # def update(cls, civil_id: int, data: CivilBase, db: Session) -> "TblCivil | None":
    #     get_data = db.query(cls).filter(cls.civil_id == civil_id).first()
    #     if not get_data:
    #         return None  
    #     data_dict = data.model_dump()
    #     for key, value in data_dict.items():
    #         if value is not None:
    #             setattr(get_data, key, value)
    #     db.commit()
    #     db.refresh(get_data)
    #     return get_data
    
    # @classmethod
    # def update(cls, civil_id: int, data: CivilBase, db: Session) -> "TblCivil | None":
    #     get_data = db.query(cls).filter(cls.civil_id == civil_id).first()
    #     if not get_data:
    #         return None  

    #     data_dict = data.model_dump()

    #     # ✅ Allowed fields that can be updated
    #     allowed_fields = {
    #         "group_id",
    #         "store_format_type",
    #         "rate_per_sqft",
    #         "total_sqft",
    #         "units",
    #         "cost_per_unit",
    #         "rate_per_sq",
    #         "remark"
    #     }

    #     for key, value in data_dict.items():
    #         if key in allowed_fields:
    #             setattr(get_data, key, value)

    #     db.add(get_data)
    #     db.commit()
    #     db.refresh(get_data)
    #     return get_data
    
    @classmethod
    def delete(cls, civil_id:int, db:Session) ->"TblCivil":
        delete_data = db.query(cls).filter(cls.civil_id == civil_id).first()
        if not delete_data:
            return False
        db.delete(delete_data)
        db.commit()
        return delete_data