# -*- coding: utf-8 -*-
# Copyright 2018-2019 Jacob M. Graving <jgraving@gmail.com>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at

#    http://www.apache.org/licenses/LICENSE-2.0

# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import numpy as np


def get_json_type(obj):
    """Serialize any object to a JSON-serializable structure.
        # Arguments
            obj: the object to serialize
        # Returns
            JSON-serializable structure representing `obj`.
        # Raises
            TypeError: if `obj` cannot be serialized.
        """
    # if obj is a serializable Keras class instance
    # e.g. optimizer, layer
    if hasattr(obj, "get_config"):
        return {"class_name": obj.__class__.__name__, "config": obj.get_config()}

    # if obj is any numpy type
    if type(obj).__module__ == np.__name__:
        if isinstance(obj, np.ndarray):
            return {"type": type(obj), "value": obj.tolist()}
        else:
            return obj.item()

    # misc functions (e.g. loss function)
    if callable(obj):
        return obj.__name__

    # if obj is a python 'type'
    if type(obj).__name__ == type.__name__:
        return obj.__name__

    raise TypeError("Not JSON Serializable:", obj)