import random
import gradio as gr

# 定義一個全局變數來存儲剩下的號碼
remaining_numbers = []

def draw_number(max_num):
    global remaining_numbers
    
    if not remaining_numbers:
        # 如果 remaining_numbers 為空，初始化列表
        remaining_numbers = list(range(1, max_num + 1))
    
    if remaining_numbers:
        # 隨機選出一個號碼並將其從列表中移除
        drawn_number = random.choice(remaining_numbers)
        remaining_numbers.remove(drawn_number)
        return f"抽中的號碼是: {drawn_number}"
    else:
        return "所有號碼已經抽完！"

# Gradio 介面
with gr.Blocks() as demo:
    max_num_input = gr.Number(label="輸入班級座號的最大值", value=30)
    result = gr.Textbox(label="抽籤結果")
    draw_button = gr.Button("抽籤")
    
    draw_button.click(draw_number, inputs=max_num_input, outputs=result)

# 啟動 Gradio 介面
demo.launch()