__init__.py

    materials: StringProperty(
        name="Material Names",
        description="names of materials in the file, autofilled",
        default="",
    )
    shaders: StringProperty(
        name="Shaders Used",
        description="shaders used in asset, autofilled",
        default="",
    )

    dimensions: FloatVectorProperty(
        name="Dimensions",
        description="dimensions of the whole asset hierarchy",
        default=(0, 0, 0),
    )
    bbox_min: FloatVectorProperty(
        name="Bbox Min",
        description="dimensions of the whole asset hierarchy",
        default=(-.25, -.25, 0),
    )
    bbox_max: FloatVectorProperty(
        name="Bbox Max",
        description="dimensions of the whole asset hierarchy",
        default=(.25, .25, .5),
    )

    texture_resolution_min: IntProperty(name="Texture Resolution Min",
                                        description="texture resolution min, autofilled", default=0)
    texture_resolution_max: IntProperty(name="Texture Resolution Max",
                                        description="texture resolution max, autofilled", default=0)

    pbr: BoolProperty(name="PBR Compatible", description="Is compatible with PBR standard", default=False)

    uv: BoolProperty(name="Has UV", description="has an UV set", default=False)
    # printable_3d : BoolProperty( name = "3d printable", description = "can be 3d printed", default = False)
    animated: BoolProperty(name="Animated", description="is animated", default=False)
    face_count: IntProperty(name="Face count", description="face count, autofilled", default=0)
    face_count_render: IntProperty(name="Render Face Count", description="render face count, autofilled", default=0)

    object_count: IntProperty(name="Number of Objects", description="how many objects are in the asset, autofilled",
                              default=0)
    mesh_poly_type: EnumProperty(
        name='Dominant Poly Type',
        items=mesh_poly_types,
        default='OTHER',
        description='',
    )

    manifold: BoolProperty(name="Manifold", description="asset is manifold, autofilled", default=False)

    rig: BoolProperty(name="Rig", description="asset is rigged, autofilled", default=False)
    simulation: BoolProperty(name="Simulation", description="asset uses simulation, autofilled", default=False)
    '''
    filepath : StringProperty(
            name="Filepath",
            description="file path",
            default="",
            )
    '''

    # THUMBNAIL STATES
    is_generating_thumbnail: BoolProperty(name="Generating Thumbnail",
                                          description="True when background process is running", default=False,
                                          update=autothumb.update_upload_model_preview)

    has_autotags: BoolProperty(name="Has Autotagging Done", description="True when autotagging done", default=False)


class BlenderKitSceneUploadProps(PropertyGroup, BlenderKitCommonUploadProps):
    style: EnumProperty(
        name="Style",
        items=model_styles,
        description="Style of asset",
        default="REALISTIC",
    )
    style_other: StringProperty(
        name="Style Other",
        description="Style not in the list",
        default="",
    )
    engine: EnumProperty(
        name='Engine',
        items=engines,
        default='CYCLES',
        description='Output engine',
    )

    production_level: EnumProperty(
        name='Production Level',
        items=(
            ('FINISHED', 'Finished', 'Render or animation ready asset'),
            ('TEMPLATE', 'Template', 'Asset intended to help in creation of something else'),
        ),
        default='FINISHED',
        description='Production state of the asset, \n also template should be actually finished, \n'
                    'just the nature of it can be a template, like a thumbnailer scene, \n '
                    'finished mesh topology as start for modelling or similar',
    )

    engine_other: StringProperty(
        name="Engine",
        description="engine not specified by addon",
        default="",
    )

    engine1: EnumProperty(
        name='2nd Engine',
        items=engines,
        default='NONE',
        description='Output engine',
    )
    engine2: EnumProperty(
        name='3rd Engine',
        items=engines,
        default='NONE',
        description='Output engine',
    )
    engine3: EnumProperty(
        name='4th Engine',
        items=engines,
        default='NONE',
        description='Output engine',
    )

    thumbnail: StringProperty(
        name="Thumbnail",
        description="Path to the thumbnail - 512x512 .jpg image",
        subtype='FILE_PATH',
        default="",
        update=autothumb.update_upload_scene_preview)

    use_design_year: BoolProperty(name="Use Design Year",
                                  description="When this thing came into world for the first time\n"
                                              " e.g. for dinosaur, you set -240 million years ;) ",
                                  default=False)
    design_year: IntProperty(name="Design Year", description="when was this item designed", default=1960)
    # use_age : BoolProperty( name = "use item age", description = "use item age", default = False)
    condition: EnumProperty(
        items=conditions,
        default='UNSPECIFIED',
        description='age of the object',
    )

    adult: BoolProperty(name="Adult Content", description="adult content", default=False)

    work_hours: FloatProperty(name="Work Hours", description="How long did it take you to finish the asset?",
                              default=0.0, min=0.0, max=8760)

    modifiers: StringProperty(
        name="Modifiers Used",
        description="if you need specific modifiers, autofilled",
        default="",
    )

    materials: StringProperty(
        name="Material Names",
        description="names of materials in the file, autofilled",
        default="",
    )
    shaders: StringProperty(
        name="Shaders Used",
        description="shaders used in asset, autofilled",
        default="",
    )

    dimensions: FloatVectorProperty(
        name="Dimensions",
        description="dimensions of the whole asset hierarchy",
        default=(0, 0, 0),
    )
    bbox_min: FloatVectorProperty(
        name="Dimensions",
        description="dimensions of the whole asset hierarchy",
        default=(-.25, -.25, 0),
    )
    bbox_max: FloatVectorProperty(
        name="Dimensions",
        description="dimensions of the whole asset hierarchy",
        default=(.25, .25, .5),
    )

    texture_resolution_min: IntProperty(name="Texture Eesolution Min",
                                        description="texture resolution min, autofilled", default=0)
    texture_resolution_max: IntProperty(name="Texture Eesolution Max",
                                        description="texture resolution max, autofilled", default=0)

    pbr: BoolProperty(name="PBR Compatible", description="Is compatible with PBR standard", default=False)

    uv: BoolProperty(name="Has UV", description="has an UV set", default=False)
    # printable_3d : BoolProperty( name = "3d printable", description = "can be 3d printed", default = False)
    animated: BoolProperty(name="Animated", description="is animated", default=False)
    face_count: IntProperty(name="Face Count", description="face count, autofilled", default=0)
    face_count_render: IntProperty(name="Render Face Count", description="render face count, autofilled", default=0)

    object_count: IntProperty(name="Number of Objects", description="how many objects are in the asset, autofilled",
                              default=0)
    mesh_poly_type: EnumProperty(
        name='Dominant Poly Type',
        items=mesh_poly_types,
        default='OTHER',
        description='',
    )

    rig: BoolProperty(name="Rig", description="asset is rigged, autofilled", default=False)
    simulation: BoolProperty(name="Simulation", description="asset uses simulation, autofilled", default=False)

    # THUMBNAIL STATES
    is_generating_thumbnail: BoolProperty(name="Generating Thumbnail",
                                          description="True when background process is running", default=False,
                                          update=autothumb.update_upload_model_preview)

    has_autotags: BoolProperty(name="Has Autotagging Done", description="True when autotagging done", default=False)


class BlenderKitModelSearchProps(PropertyGroup, BlenderKitCommonSearchProps):
    search_keywords: StringProperty(
        name="Search",
        description="Search for these keywords",
        default="",
        update=search.search_update
    )
    search_style: EnumProperty(
        name="Style",
        items=search_model_styles,
        description="Keywords defining style (realistic, painted, polygonal, other)",
        default="ANY",
        update=search.search_update
    )
    search_style_other: StringProperty(
        name="Style",
        description="Search style - other",
        default="",
        update=search.search_update
    )
    search_engine: EnumProperty(
        items=engines,
        default='CYCLES',
        description='Output engine',
        update=search.search_update
    )
    search_engine_other: StringProperty(
        name="Engine",
        description="Engine not specified by addon",
        default="",
        update=search.search_update
    )

    free_only: BoolProperty(name="Free only", description="Show only free models",
                            default=False, update=search.search_update)

    # CONDITION
    search_condition: EnumProperty(
        items=conditions,
        default='UNSPECIFIED',
        description='Condition of the object',
        update=search.search_update
    )

    search_adult: BoolProperty(
        name="Adult Content",
        description="You're adult and agree with searching adult content",
        default=False,
        update=search.search_update
    )

    # DESIGN YEAR
    search_design_year: BoolProperty(name="Sesigned in Year",
                                     description="When the object was approximately designed",
                                     default=False,
                                     update=search.search_update,
                                     )

    search_design_year_min: IntProperty(name="Minimum Design Year",
                                        description="Minimum design year",
                                        default=1950, min=-100000000, max=1000000000,
                                        update=search.search_update,
                                        )

    search_design_year_max: IntProperty(name="Maximum Design Year",
                                        description="Maximum design year",
                                        default=2017,
                                        min=0,
                                        max=10000000,
                                        update=search.search_update,
                                        )

    # POLYCOUNT
    search_polycount: BoolProperty(name="Use Polycount",
                                   description="Use polycount of object search tag",
                                   default=False,
                                   update=search.search_update, )

    search_polycount_min: IntProperty(name="Min Polycount",
                                      description="Minimum poly count of the asset",
                                      default=0,
                                      min=0,
                                      max=100000000,
                                      update=search.search_update, )

    search_polycount_max: IntProperty(name="Max Polycount",
                                      description="Maximum poly count of the asset",
                                      default=100000000,
                                      min=0,
                                      max=100000000,
                                      update=search.search_update,
                                      )

    append_method: EnumProperty(
        name="Import Method",
        items=(
            ('LINK_COLLECTION', 'Link', 'Link Collection'),
            ('APPEND_OBJECTS', 'Append', 'Append as Objects'),
        ),
        description="Appended objects are editable in your scene. Linked assets are saved in original files, "
                    "aren't editable but also don't increase your file size",
        default="LINK_COLLECTION"
    )
    append_link: EnumProperty(
        name="How to Attach",
        items=(
            ('LINK', 'Link', ''),
            ('APPEND', 'Append', ''),
        ),
        description="choose if the assets will be linked or appended",
        default="LINK"
    )
    import_as: EnumProperty(
        name="Import as",
        items=(
            ('GROUP', 'group', ''),
            ('INDIVIDUAL', 'objects', ''),

        ),
        description="choose if the assets will be linked or appended",
        default="GROUP"
    )
    randomize_rotation: BoolProperty(name='Randomize Rotation',
                                     description="randomize rotation at placement",
                                     default=False)
    randomize_rotation_amount: FloatProperty(name="Randomization Max Angle",
                                             description="maximum angle for random rotation",
                                             default=math.pi / 36,
                                             min=0,
                                             max=2 * math.pi,
                                             subtype='ANGLE')
    offset_rotation_amount: FloatProperty(name="Offset Rotation",
                                          description="offset rotation, hidden prop",
                                          default=0,
                                          min=0,
                                          max=360,
                                          subtype='ANGLE')
    offset_rotation_step: FloatProperty(name="Offset Rotation Step",
                                        description="offset rotation, hidden prop",
                                        default=math.pi / 2,
                                        min=0,
                                        max=180,
                                        subtype='ANGLE')


class BlenderKitSceneSearchProps(PropertyGroup, BlenderKitCommonSearchProps):
    search_keywords: StringProperty(
        name="Search",
        description="Search for these keywords",
        default="",
        update=search.search_update
    )
    search_style: EnumProperty(
        name="Style",
        items=search_model_styles,
        description="keywords defining style (realistic, painted, polygonal, other)",
        default="ANY",
        update=search.search_update
    )
    search_style_other: StringProperty(
        name="Style",
        description="Search style - other",
        default="",
        update=search.search_update
    )
    search_engine: EnumProperty(
        items=engines,
        default='CYCLES',
        description='Output engine',
        update=search.search_update
    )
    search_engine_other: StringProperty(
        name="Engine",
        description="engine not specified by addon",
        default="",
        update=search.search_update
    )


class BlenderKitAddonPreferences(AddonPreferences):
    # this must match the addon name, use '__package__'
    # when defining this in a submodule of a python package.
    bl_idname = __name__

    default_global_dict = paths.default_global_dict()

    enable_oauth = True

    api_key: StringProperty(
        name="BlenderKit API Key",
        description="Your blenderkit API Key. Get it from your page on the website",
        default="",
        subtype="PASSWORD",
        update=utils.save_prefs
    )

    api_key_refresh: StringProperty(
        name="BlenderKit refresh API Key",
        description="API key used to refresh the token regularly.",
        default="",
        subtype="PASSWORD",
    )

    api_key_timeout: IntProperty(
        name='api key timeout',
        description='time where the api key will need to be refreshed',
        default=0,
    )

    api_key_life: IntProperty(
        name='api key life time',
        description='maximum lifetime of the api key, in seconds',
        default=0,
    )

    refresh_in_progress: BoolProperty(
        name="Api key refresh in progress",
        description="Api key is currently being refreshed. Don't refresh it again.",
        default=False
    )

    login_attempt: BoolProperty(
        name="Login/Signup attempt",
        description="When this is on, BlenderKit is trying to connect and login",
        default=False
    )

    show_on_start: BoolProperty(
        name="Show assetbar when starting blender",
        description="Show assetbar when starting blender",
        default=False
    )

    tips_on_start: BoolProperty(
        name="Show tips when starting blender",
        description="Show tips when starting blender",
        default=False
    )

    search_in_header: BoolProperty(
        name="Show BlenderKit search in 3D view header",
        description="Show BlenderKit search in 3D view header",
        default=True
    )

    global_dir: StringProperty(
        name="Global Files Directory",
        description="Global storage for your assets, will use subdirectories for the contents",
        subtype='DIR_PATH',
        default=default_global_dict,
        update=utils.save_prefs
    )

    project_subdir: StringProperty(
        name="Project Assets Subdirectory",
        description="where data will be stored for individual projects",
        subtype='DIR_PATH',
        default="//assets",
    )

    directory_behaviour: EnumProperty(
        name="Use Directories",
        items=(
            ('BOTH', 'Global and subdir',
             'store files both in global lib and subdirectory of current project. '
             'Warning - each file can be many times on your harddrive, but helps you keep your projects in one piece'),
            ('GLOBAL', 'Global',
             "store downloaded files only in global directory. \n "
             "This can bring problems when moving your projects, \n"
             "since assets won't be in subdirectory of current project"),
            ('LOCAL', 'Local',
             'store downloaded files only in local directory.\n'
             ' This can use more bandwidth when you reuse assets in different projects. ')

        ),
        description="Which directories will be used for storing downloaded data",
        default="BOTH",
    )
    thumbnail_use_gpu: BoolProperty(
        name="Use GPU for Thumbnails Rendering",
        description="By default this is off so you can continue your work without any lag",
        default=False
    )

    panel_behaviour: EnumProperty(
        name="Panels Locations",
        items=(
            ('BOTH', 'Both Types',
             ''),
            ('UNIFIED', 'Unified 3d View Panel',
             ""),
            ('LOCAL', 'Relative to Data',
             '')

        ),
        description="Which directories will be used for storing downloaded data",
        default="UNIFIED",
    )

    max_assetbar_rows: IntProperty(name="Max Assetbar Rows",
                                   description="max rows of assetbar in the 3d view",
                                   default=1,
                                   min=0,
                                   max=20)

    thumb_size: IntProperty(name="Assetbar thumbnail Size", default=96, min=-1, max=256)

    asset_counter: IntProperty(name="Usage Counter",
                               description="Counts usages so it asks for registration only after reaching a limit",
                               default=0,
                               min=0,
                               max=20000)

    # allow_proximity : BoolProperty(
    #     name="allow proximity data reports",
    #     description="This sends anonymized proximity data \n \
    #             and allows us to make relations between database objects \n \
    #              without user interaction",
    #     default=False
    # )

    def draw(self, context):
        layout = self.layout
        layout.prop(self, "show_on_start")

        if self.api_key.strip() == '':
            if self.enable_oauth:
                ui_panels.draw_login_buttons(layout)
            else:
                op = layout.operator("wm.url_open", text="Register online and get your API Key",
                                     icon='QUESTION')
                op.url = paths.BLENDERKIT_SIGNUP_URL
        else:
            if self.enable_oauth:
                layout.operator("wm.blenderkit_logout", text="Logout",
                                icon='URL')

        # if not self.enable_oauth:
        layout.prop(self, "api_key", text='Your API Key')
        # layout.label(text='After you paste API Key, categories are downloaded, so blender will freeze for a few seconds.')
        layout.prop(self, "global_dir")
        layout.prop(self, "project_subdir")
        # layout.prop(self, "temp_dir")
        layout.prop(self, "directory_behaviour")
        layout.prop(self, "thumbnail_use_gpu")
        # layout.prop(self, "allow_proximity")
        # layout.prop(self, "panel_behaviour")
        layout.prop(self, "thumb_size")
        layout.prop(self, "max_assetbar_rows")
        layout.prop(self, "tips_on_start")
        layout.prop(self, "search_in_header")


# registration
classes = (

    BlenderKitAddonPreferences,
    BlenderKitUIProps,

    BlenderKitModelSearchProps,
    BlenderKitModelUploadProps,

    BlenderKitSceneSearchProps,
    BlenderKitSceneUploadProps,

    BlenderKitMaterialUploadProps,
    BlenderKitMaterialSearchProps,

    BlenderKitTextureUploadProps,

    BlenderKitBrushSearchProps,
    BlenderKitBrushUploadProps,

    BlenderKitRatingProps,
)


def register():
    for cls in classes:
        bpy.utils.register_class(cls)

    bpy.types.Scene.blenderkitUI = PointerProperty(
        type=BlenderKitUIProps)

    # MODELS
    bpy.types.Scene.blenderkit_models = PointerProperty(
        type=BlenderKitModelSearchProps)
    bpy.types.Object.blenderkit = PointerProperty(  # for uploads, not now...
        type=BlenderKitModelUploadProps)
    bpy.types.Object.bkit_ratings = PointerProperty(  # for uploads, not now...
        type=BlenderKitRatingProps)

    # SCENES
    bpy.types.Scene.blenderkit_scene = PointerProperty(
        type=BlenderKitSceneSearchProps)
    bpy.types.Scene.blenderkit = PointerProperty(  # for uploads, not now...
        type=BlenderKitSceneUploadProps)
    bpy.types.Scene.bkit_ratings = PointerProperty(  # for uploads, not now...
        type=BlenderKitRatingProps)

    # MATERIALS
    bpy.types.Scene.blenderkit_mat = PointerProperty(
        type=BlenderKitMaterialSearchProps)
    bpy.types.Material.blenderkit = PointerProperty(  # for uploads, not now...
        type=BlenderKitMaterialUploadProps)
    bpy.types.Material.bkit_ratings = PointerProperty(  # for uploads, not now...
        type=BlenderKitRatingProps)

    # BRUSHES
    bpy.types.Scene.blenderkit_brush = PointerProperty(
        type=BlenderKitBrushSearchProps)
    bpy.types.Brush.blenderkit = PointerProperty(  # for uploads, not now...
        type=BlenderKitBrushUploadProps)
    bpy.types.Brush.bkit_ratings = PointerProperty(  # for uploads, not now...
        type=BlenderKitRatingProps)

    search.register_search()
    asset_inspector.register_asset_inspector()
    download.register_download()
    upload.register_upload()
    ratings.register_ratings()
    autothumb.register_thumbnailer()
    ui.register_ui()
    icons.register_icons()
    ui_panels.register_ui_panels()
    bg_blender.register()
    utils.load_prefs()
    overrides.register_overrides()
    bkit_oauth.register()
    tasks_queue.register()

    bpy.app.timers.register(check_timers_timer, persistent=True)

    bpy.app.handlers.load_post.append(scene_load)


def unregister():
    bpy.app.timers.unregister(check_timers_timer)
    ui_panels.unregister_ui_panels()
    ui.unregister_ui()

    icons.unregister_icons()
    search.unregister_search()
    asset_inspector.unregister_asset_inspector()
    download.unregister_download()
    upload.unregister_upload()
    ratings.unregister_ratings()
    autothumb.unregister_thumbnailer()
    bg_blender.unregister()
    overrides.unregister_overrides()
    bkit_oauth.unregister()
    tasks_queue.unregister()

    del bpy.types.Scene.blenderkit_models
    del bpy.types.Scene.blenderkit_scene
    del bpy.types.Scene.blenderkit_brush
    del bpy.types.Scene.blenderkit_mat

    del bpy.types.Scene.blenderkit
    del bpy.types.Object.blenderkit
    del bpy.types.Material.blenderkit
    del bpy.types.Brush.blenderkit

    for cls in classes:
        bpy.utils.unregister_class(cls)

    bpy.app.handlers.load_post.remove(scene_load)