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#
# Licensed under the Apache License, Version 2.0 (the "License"). You
# may not use this file except in compliance with the License. A copy of
# the License is located at
#
#     http://aws.amazon.com/apache2.0/
#
# or in the "license" file accompanying this file. This file is
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"""This module contains functions for obtaining JumpStart hyperparameters."""
from __future__ import absolute_import
from typing import Dict, Optional
from sagemaker.jumpstart.constants import (
    JUMPSTART_DEFAULT_REGION_NAME,
)
from sagemaker.jumpstart.enums import (
    JumpStartScriptScope,
    VariableScope,
)
from sagemaker.jumpstart.utils import (
    verify_model_region_and_return_specs,
)


def _retrieve_default_hyperparameters(
    model_id: str,
    model_version: str,
    region: Optional[str] = None,
    include_container_hyperparameters: bool = False,
    tolerate_vulnerable_model: bool = False,
    tolerate_deprecated_model: bool = False,
):
    """Retrieves the training hyperparameters for the model matching the given arguments.

    Args:
        model_id (str): JumpStart model ID of the JumpStart model for which to
            retrieve the default hyperparameters.
        model_version (str): Version of the JumpStart model for which to retrieve the
            default hyperparameters.
        region (str): Region for which to retrieve default hyperparameters.
            (Default: None).
        include_container_hyperparameters (bool): True if container hyperparameters
            should be returned as well. Container hyperparameters are not used to tune
            the specific algorithm, but rather by SageMaker Training to setup
            the training container environment. For example, there is a container hyperparameter
            that indicates the entrypoint script to use. These hyperparameters may be required
            when creating a training job with boto3, however the ``Estimator`` classes
            should take care of adding container hyperparameters to the job. (Default: False).
        tolerate_vulnerable_model (bool): True if vulnerable versions of model
            specifications should be tolerated (exception not raised). If False, raises an
            exception if the script used by this version of the model has dependencies with known
            security vulnerabilities. (Default: False).
        tolerate_deprecated_model (bool): True if deprecated versions of model
            specifications should be tolerated (exception not raised). If False, raises
            an exception if the version of the model is deprecated. (Default: False).
    Returns:
        dict: the hyperparameters to use for the model.
    """

    if region is None:
        region = JUMPSTART_DEFAULT_REGION_NAME

    model_specs = verify_model_region_and_return_specs(
        model_id=model_id,
        version=model_version,
        scope=JumpStartScriptScope.TRAINING,
        region=region,
        tolerate_vulnerable_model=tolerate_vulnerable_model,
        tolerate_deprecated_model=tolerate_deprecated_model,
    )

    default_hyperparameters: Dict[str, str] = {}
    for hyperparameter in model_specs.hyperparameters:
        if (
            include_container_hyperparameters and hyperparameter.scope == VariableScope.CONTAINER
        ) or hyperparameter.scope == VariableScope.ALGORITHM:
            default_hyperparameters[hyperparameter.name] = str(hyperparameter.default)
    return default_hyperparameters