from fastapi import HTTPException
from pydantic import Field
from sqlalchemy import (INTEGER, VARCHAR, Enum, Float, ForeignKey, Text)
from sqlalchemy.orm import (Mapped,Session,mapped_column,relationship)
from app.api.store_formate.schemas import StoreFormateUpdate
from app.models.main import Base
from app.utils.schemas_utils import CustomModel
from enum import Enum as PyEnum

class StoreFormatBase(CustomModel):
    __tablename__ = "tbl_store_format"

    store_id: int | None = Field(default=None)
    store_name: str | None = Field(default=None)
    store_name_rationale: str  | None = Field(default=None)
    store_size: float | None = Field(default=None)
    merchandise: str | None = Field(default=None)
    # pricing_strategy: str | None = Field(default=None)
    location: str | None = Field(default=None)
    additional_location_parameters: str | None = Field(default=None)
    service_parameters: str | None = Field(default=None)
    technology_adoption: str | None = Field(default=None)
    other_parameters: str | None = Field(default=None)
    store_format_type: str | None = Field(default=None, alias="store_format_type")
    upload_store_layout : str | None = Field(default=None)
    group_id: int | None = Field(default=None)
    
class StoreFormatType(str, PyEnum):
    STORE_FORMAT_A = "Store Format A"
    STORE_FORMAT_B = "Store Format B"
    
class TblStoreFormat(Base):
    __tablename__ = "tbl_store_format"

    store_id: Mapped[int] = mapped_column("store_id", INTEGER, primary_key=True, autoincrement=True)
    store_name: Mapped[str] = mapped_column("store_name", VARCHAR(255), nullable=False)
    store_name_rationale : Mapped[str] = mapped_column("store_name_rationale", VARCHAR(255), nullable=False)
    store_size: Mapped[float] = mapped_column("store_size", Float, nullable=False)
    merchandise: Mapped[str] = mapped_column("merchandise",  VARCHAR(20), nullable=False)
    # pricing_strategy: Mapped[str] = mapped_column("pricing_strategy", Enum("Everyday Low Price", "High-Low", "Subscription", name="pricing_strategies"), nullable=False)
    location: Mapped[str] = mapped_column("location", Enum("High Street", "Mall", name="store_locations"), nullable=False)
    additional_location_parameters: Mapped[str] = mapped_column("additional_location_parameters", Text, nullable=True)
    service_parameters: Mapped[str] = mapped_column("service_parameters",  VARCHAR(20), nullable=False)
    technology_adoption: Mapped[str] = mapped_column("technology_adoption",  VARCHAR(20), nullable=False)
    other_parameters: Mapped[str] = mapped_column("other_parameters", Text, nullable=True)
    store_format_type : Mapped[str] = mapped_column("store_format_type", Enum(StoreFormatType))
    upload_store_layout : Mapped[str] = mapped_column("upload_store_layout", VARCHAR(255), nullable=True, server_default=None)
    group_id: Mapped[int] = mapped_column("group_id", INTEGER, ForeignKey("tbl_group.group_id"), nullable=False)

    group = relationship("TblGroup", back_populates="storeformate")
    

    @classmethod
    def create(cls, data:StoreFormatBase, db: Session) -> "TblStoreFormat":
        data_dict = data.model_dump()
        new_data = cls(**data_dict)
        db.add(new_data)
        db.flush()
        return new_data
    
    @classmethod
    def update(cls, store_id: int, data:StoreFormateUpdate, db: Session) -> "TblStoreFormat":
        get_data = db.query(cls).filter(cls.store_id == store_id).first()
        if not get_data:
            raise HTTPException(status_code=404, detail="Store format not found")
        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 get_by_id(cls, store_id: int, db: Session) -> "TblStoreFormat":
        store_format = db.query(cls).filter(cls.store_id == store_id).first()
        if not store_format:
            raise HTTPException(status_code=404, detail="Store format not found")
        return store_format
    
    @classmethod
    def get_by_group_id(cls, group_id: int, db: Session) -> "TblStoreFormat":
        store_format = db.query(cls).filter(cls.group_id == group_id).all()
        if not store_format:
            raise HTTPException(status_code=404, detail="Store Format not found for this Group")
        return store_format
    
    @classmethod
    def delete(cls, store_id: int, db: Session) -> bool:
        obj = db.query(cls).filter(cls.store_id== store_id).first()
        if not obj:
            return False
        db.delete(obj)
        db.commit()
        return True
    
    
    @classmethod
    def get_all(cls, db: Session):
        return db.query(cls).all()

    def as_dict(self):  # type: ignore[attr-defined]
        return {column.name: getattr(self, column.name) for column in self.__table__.columns} # type: ignore