import openpyxl
import os
import sys
import pandas


def warn_pause_exit(msg, pause_num, exit_num):
    # 功能：打印告警信息，并推出程序
    # 参数：告警信息，暂停的次数，退出的值
    # 返回值：-
    print(msg + '\n')
    for i in range(pause_num):
        _ = input("Press ENTER to continue......\n")
    sys.exit(exit_num)


def traversal_files(path):
    # 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 os.path.exists(path):
        msg = f'数据文件夹{path}不存在，请确认后重试......'
        warn_pause_exit(msg, 1, 11)
    else:
        dirs = []
        files = []
        for item in os.scandir(path):
            if item.is_dir():
                dirs.append(item.path)
            elif item.is_file():
                files.append(item.path)

        return dirs, files


def initialization():
    try:
        # read init configurations from config file
        wb_conf = openpyxl.load_workbook('./configs.xlsx', read_only=True)
        ws_conf = wb_conf['current']
    except Exception as Err:
        msg = "无法在当前路径下找到或打开【configs.xlsx】文件，请确认！"
        warn_pause_exit(msg, 1, 2)

    FUNC = ws_conf.cell(row=2, column=2).value
    DATA_DIR = ws_conf.cell(row=3, column=2).value
    AXIS = int(ws_conf.cell(row=4, column=2).value)
    RC = ws_conf.cell(row=5, column=2).value.split(',')
    COLUMN = int(ws_conf.cell(row=6, column=2).value)
    wb_conf.close()

    _, data_files = traversal_files(DATA_DIR)
    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。"
            warn_pause_exit(msg, 1, 1)

    return data_files, FUNC, RC, COLUMN, AXIS


def current_max(*args):
    data_files, FUNC, RC, COLUMN, AXIS = args
    for data_file in data_files:
        df = pandas.read_csv(data_file, sep='\t')
        col = df.columns.values[COLUMN-1]
        c_max = df[col].max()
        print(f"{data_file}: {c_max/1000*RC[AXIS-1]:.3f}")

    msg = f"数据处理完毕......"
    warn_pause_exit(msg, 1, 0)


def current_avg(*args):
    data_files, FUNC, RC, COLUMN, AXIS = args
    for data_file in data_files:
        df = pandas.read_csv(data_file, sep='\t')
        col = df.columns.values[COLUMN-1]
        c_std = df[col].std()
        c_avg = df[col].mean()

        axis = int(data_file.split('\\')[-1].split('_')[0].replace('j', ''))
        print(f"{data_file}: {(abs(c_avg)+c_std)/1000*float(RC[axis-1]):.3f}")

    msg = f"数据处理完毕......"
    warn_pause_exit(msg, 1, 0)


def full_cycle(*args):
    pass


def main():
    args = initialization()
    if args[1] == 'max':
        current_max(*args)
    elif args[1] == 'avg':
        current_avg(*args)
    elif args[1] == 'cycle':
        full_cycle(*args)


if __name__ == '__main__':
    main()