from typing import Optional
import gradio

import facefusion.globals
import facefusion.choices
from facefusion import wording

EXECUTION_THREAD_COUNT_SLIDER : Optional[gradio.Slider] = None


def render() -> None:
	global EXECUTION_THREAD_COUNT_SLIDER

	EXECUTION_THREAD_COUNT_SLIDER = gradio.Slider(
		label = wording.get('execution_thread_count_slider_label'),
		value = facefusion.globals.execution_thread_count,
		step = facefusion.choices.execution_thread_count_range[1] - facefusion.choices.execution_thread_count_range[0],
		minimum = facefusion.choices.execution_thread_count_range[0],
		maximum = facefusion.choices.execution_thread_count_range[-1]
	)


def listen() -> None:
	EXECUTION_THREAD_COUNT_SLIDER.change(update_execution_thread_count, inputs = EXECUTION_THREAD_COUNT_SLIDER)


def update_execution_thread_count(execution_thread_count : int = 1) -> None:
	facefusion.globals.execution_thread_count = execution_thread_count