#!/usr/bin/env python3

"""

Function for loading the BioModel.

"""

from typing import Annotated, Any, Union

from pydantic import BaseModel, BeforeValidator

from ..models.basico_model import BasicoModel

def ensure_biomodel_id(value: Any) -> Any:

    """

    Ensure that the biomodel_id is an integer or a string starting with 'BIOMD' or 'MODEL'.

    """

    if isinstance(value, int):

        return value

    if isinstance(value, str) and (value.startswith("BIOMD") or value.startswith("MODEL")):

        return value

    raise ValueError("biomodel_id must be an integer or a string starting with 'BIOMD' or 'MODEL'.")

class ModelData(BaseModel):

    """

    Base model for the model data.

    """

    biomodel_id: Annotated[Union[int, str], BeforeValidator(ensure_biomodel_id)] = None

    # sbml_file_path: Optional[str] = None

    use_uploaded_sbml_file: bool = False

def load_biomodel(sys_bio_model, sbml_file_path=None):

    """

    Load the BioModel.

    """

    model_object = None

    if sys_bio_model.biomodel_id:

        model_object = BasicoModel(biomodel_id=sys_bio_model.biomodel_id)

    elif sbml_file_path:

        model_object = BasicoModel(sbml_file_path=sbml_file_path)

    return model_object