bl_info = {
    'name': 'Fever Data Panel',
    'blender': (2, 93, 0),
    'category': 'Object'}

import bpy
from bpy.props import BoolProperty, FloatProperty, StringProperty, PointerProperty

class fv_type(bpy.types.PropertyGroup):
    @classmethod
    def register(cls):
        bpy.types.Object.fv_type = PointerProperty(
            name = "Fever - Data Type",
            description = "Fever - Data Type",
            type = cls)

        cls.is_audio_source = BoolProperty(
                name = "Audio Source",
                description = "FV Audio Source",
                default = False)

    @classmethod
    def unregister(cls):
        del bpy.types.Object.fv_type

class fv_audio_source(bpy.types.PropertyGroup):
    @classmethod
    def register(cls):
        bpy.types.Object.fv_audio_source = PointerProperty(
            name="Fever - Context Data",
            description="Fever - Context Data",
            type=cls)

        cls.file_path = StringProperty(
            name="File Path",
            subtype="FILE_PATH",
            description="Path of the audio WAV file",
            default="")

        cls.volume = FloatProperty(
            name="Volume",
            description="Volume of the audio source",
            default=1.0)

        cls.is_looping = BoolProperty(
            name="Is Looping?",
            description="Should this audio track loop?",
            default=False)

    @classmethod
    def unregister(cls):
        del bpy.types.Object.fv_audio_source

class fv_panel(bpy.types.Panel):
    bl_label = "Fever Panel"
    bl_idname = "OBJECT_PT_Fever_Panel"

    bl_space_type = "PROPERTIES"
    bl_region_type = "WINDOW"
    bl_context = "object"

    def draw(self, context):
        column = self.layout.column()

        row = column.row()
        row.prop(context.active_object.fv_type, "is_audio_source")

        if context.active_object.fv_type.is_audio_source:
            box = self.layout.box()
            row = box.row()
            row.prop(context.active_object.fv_audio_source, "file_path")
            row = box.row()
            row.prop(context.active_object.fv_audio_source, "volume")
            row = box.row()
            row.prop(context.active_object.fv_audio_source, "is_looping")

def register():
    bpy.utils.register_class(fv_panel)
    bpy.utils.register_class(fv_type)
    bpy.utils.register_class(fv_audio_source)

def unregister():
    bpy.utils.unregister_class(fv_panel)
    bpy.utils.unregister_class(fv_type)
    bpy.utils.unregister_class(fv_audio_source)

if __name__ == '__main__':
    register()