import openpyxl
from os import scandir
from os.path import exists
from sys import argv
import pandas


def traversal_files(path, w2t):
    # 功能：以列表的形式分别返回指定路径下的文件和文件夹，不包含子目录
    # 参数：路径
    # 返回值：路径下的文件夹列表 路径下的文件列表
    if not exists(path):
        msg = f'数据文件夹{path}不存在，请确认后重试......'
        w2t(msg, 0, 1)
    else:
        dirs = []
        files = []
        for item in scandir(path):
            if item.is_dir():
                dirs.append(item.path)
            elif item.is_file():
                files.append(item.path)

        return dirs, files


def initialization(path, w2t):
    _, data_files = traversal_files(path, w2t)
    for data_file in data_files:
        if not data_file.endswith('.data'):
            msg = f"所有文件必须以 .data 结尾，请检查后重新运行。"
            w2t(msg, 0, 2)

    return data_files


def current_max(data_files, rc, trq, w2t):
    for data_file in data_files:
        df = pandas.read_csv(data_file, sep='\t')
        col = df.columns.values[trq-1]
        c_max = df[col].max()
        w2t(f"{data_file}: {c_max/1000*rc:.4f}")

    w2t("【MAX】数据处理完毕......")


def current_avg(data_files, rc, trq, w2t):
    for data_file in data_files:
        df = pandas.read_csv(data_file, sep='\t')
        col = df.columns.values[trq-1]
        c_std = df[col].std()
        c_avg = df[col].mean()

        w2t(f"{data_file}: {(abs(c_avg)+c_std)/1000*rc:.4f}")

    w2t("【AVG】数据处理完毕......")


def main(path, sub, rc, vel, trq, w2t):
    data_files = initialization(path, w2t)
    if sub == 'max':
        current_max(data_files, rc, trq, w2t)
    elif sub == 'avg':
        current_avg(data_files, rc, trq, w2t)
    else:
        pass


if __name__ == '__main__':
    main(path=argv[1], sub=argv[2], rc=argv[3], vel=argv[4], trq=argv[5], w2t=argv[6])