import os
import cppy.cp_util as util

# 工具函数
def extract_words(path_to_file):    
    return util.extract_words(path_to_file)

def frequencies(word_list):
    return util.get_frequencies(word_list)

def sort(word_freq):
    return util.sort_dict(word_freq)

def print_menu():
    print("\n菜单选项：")
    print("1. 上传并处理文件")
    print("2. 继续")
    print("3. 退出")

def open_and_print_file():
    filename = input("请输入文件名：")
    word_freqs = sort( frequencies(extract_words( filename )) )    
    util.print_word_freqs(word_freqs)

def main():
    while True:
        print_menu()
        choice = input("请选择一个选项（1/2/3）：")
        
        if choice == '1':
            open_and_print_file()
        elif choice == '2':
            continue
        elif choice == '3':
            print("退出程序。")
            break
        else:
            print("无效的输入，请重新输入。")


if __name__ == "__main__":
    main()