# Path: blendergltf/exporters/base.py
# class BaseExporter:
#     gltf_key = ''
#     blender_key = ''
# 
#     @classmethod
#     def get_custom_properties(cls, blender_data):
#         custom_props = {
#             key: value.to_list() if hasattr(value, 'to_list') else value
#             for key, value in blender_data.items()
#             if key not in _IGNORED_CUSTOM_PROPS
#         }
# 
#         custom_props = {
#             key: value for key, value in custom_props.items()
#             if _is_serializable(value)
#         }
# 
#         return custom_props
# 
#     @classmethod
#     def check(cls, state, blender_data):
#         return True
# 
#     @classmethod
#     def default(cls, state, blender_data):
#         return {
#             'name': blender_data.name
#         }
# 
#     @classmethod
#     def export(cls, state, blender_data):
#         return {}
# 
# Path: blendergltf/exporters/common.py
# class Reference:
#     __slots__ = (
#         "blender_type",
#         "blender_name",
#         "source",
#         "prop",
#         "value",
#     )
# 
#     def __init__(self, blender_type, blender_name, source, prop):
#         self.blender_type = blender_type
#         self.blender_name = blender_name
#         self.source = source
#         self.prop = prop
#         self.value = None
# 
#     def __str__(self):
#         return json.dumps([self.blender_type, self.blender_name, self.value])
# 
# class SimpleID:
#     def __init__(self, name, data=None):
#         self.name = name
#         self.data = data


from distutils.version import StrictVersion as Version
from .base import BaseExporter
from .common import (
    Reference,
    SimpleID,
)
import bpy


class TextureExporter(BaseExporter):
    gltf_key = 'textures'
    blender_key = 'textures'

    @classmethod
    def check(cls, state, blender_data):
        errors = []
        if not isinstance(blender_data, bpy.types.ImageTexture):
            errors.append('is not an ImageTexture')
        elif blender_data.image is None:
            errors.append('has no image reference')
        elif blender_data.image.channels not in [3, 4]:
            errors.append(
                'points to {}-channel image (must be 3 or 4)'
                .format(blender_data.image.channels)
            )

        if errors:
            err_list = '\n\t'.join(errors)
            print(
                'Unable to export texture {} due to the following errors:\n\t{}'
                .format(blender_data.name, err_list)
            )
            return False

        return True

    @classmethod

# Path: blendergltf/exporters/base.py
# class BaseExporter:
#     gltf_key = ''
#     blender_key = ''
# 
#     @classmethod
#     def get_custom_properties(cls, blender_data):
#         custom_props = {
#             key: value.to_list() if hasattr(value, 'to_list') else value
#             for key, value in blender_data.items()
#             if key not in _IGNORED_CUSTOM_PROPS
#         }
# 
#         custom_props = {
#             key: value for key, value in custom_props.items()
#             if _is_serializable(value)
#         }
# 
#         return custom_props
# 
#     @classmethod
#     def check(cls, state, blender_data):
#         return True
# 
#     @classmethod
#     def default(cls, state, blender_data):
#         return {
#             'name': blender_data.name
#         }
# 
#     @classmethod
#     def export(cls, state, blender_data):
#         return {}
# 
# Path: blendergltf/exporters/common.py
# class Reference:
#     __slots__ = (
#         "blender_type",
#         "blender_name",
#         "source",
#         "prop",
#         "value",
#     )
# 
#     def __init__(self, blender_type, blender_name, source, prop):
#         self.blender_type = blender_type
#         self.blender_name = blender_name
#         self.source = source
#         self.prop = prop
#         self.value = None
# 
#     def __str__(self):
#         return json.dumps([self.blender_type, self.blender_name, self.value])
# 
# class SimpleID:
#     def __init__(self, name, data=None):
#         self.name = name
#         self.data = data


# Path: blendergltf/exporters/texture.py
from distutils.version import StrictVersion as Version
from .base import BaseExporter
from .common import (
    Reference,
    SimpleID,
)
import bpy



class TextureExporter(BaseExporter):
    gltf_key = 'textures'
    blender_key = 'textures'

    @classmethod
    def check(cls, state, blender_data):
        errors = []
        if not isinstance(blender_data, bpy.types.ImageTexture):
            errors.append('is not an ImageTexture')
        elif blender_data.image is None:
            errors.append('has no image reference')
        elif blender_data.image.channels not in [3, 4]:
            errors.append(
                'points to {}-channel image (must be 3 or 4)'
                .format(blender_data.image.channels)
            )

        if errors:
            err_list = '\n\t'.join(errors)
            print(
                'Unable to export texture {} due to the following errors:\n\t{}'
                .format(blender_data.name, err_list)
            )
            return False

        return True

    @classmethod

    def export_sampler(cls, blender_data):