import datetime
import multiprocessing
import os.path

import pandas as pd


def __build_directory_dict(directory_dict, path, filter_types=None):
    # 遍历目录下的所有项
    for item in os.listdir(path):
        item_path = os.path.join(path, item)
        if os.path.isdir(item_path):
            __build_directory_dict(directory_dict, item_path, filter_types=filter_types)
        elif os.path.isfile(item_path):
            if path not in directory_dict:
                directory_dict[path] = []

            if filter_types is None or len(filter_types) == 0:
                directory_dict[path].append(item_path)
            elif str(item_path).split(".")[-1] in filter_types:
                if str(item_path).count("~$") == 0:
                    directory_dict[path].append(item_path)


# 读取路径下所有的excel文件
def read_excel_files(read_path, filter_types=None):
    if filter_types is None:
        filter_types = ['xls', 'xlsx', 'csv', 'gz']
    if os.path.isfile(read_path):
        return [read_path]

    directory_dict = {}
    __build_directory_dict(directory_dict, read_path, filter_types=filter_types)

    return [path for paths in directory_dict.values() for path in paths if path]


# 读取路径下所有的文件
def read_files(read_path, filter_types=None):
    if filter_types is None:
        filter_types = ['xls', 'xlsx', 'csv', 'gz', 'zip', 'rar']
    if os.path.isfile(read_path):
        return [read_path]
    directory_dict = {}
    __build_directory_dict(directory_dict, read_path, filter_types=filter_types)

    return [path1 for paths in directory_dict.values() for path1 in paths if path1]


all_files = read_files(r'G:\CMS', ['txt'])


def get_line_count(file_path):
    with open(file_path, 'r', encoding='utf-8') as file:
        return sum(1 for _ in file)


def read_file_and_read_count(index, file_path, datas):
    if index % 10000 == 0:
        print(datetime.datetime.now(), index)
    base_name = os.path.basename(file_path).split('.')[0]
    cols = base_name.split('_')

    cols.append(get_line_count(file_path))
    datas.append(cols)


def get_name(x):
    result_str = ''
    if x['col3'] != '无':
        result_str += x['col3']
    result_str += x['col2']
    if x['col4'] != '无':
        result_str += x['col4']
    result_str += x['col7']
    return result_str


if __name__ == '__main__':
    datas = multiprocessing.Manager().list()

    with multiprocessing.Pool(20) as pool:
        pool.starmap(read_file_and_read_count, [(i, file_path, datas) for i, file_path in enumerate(all_files)])

    df = pd.DataFrame(datas, columns=[f'col{i}' for i in range(10)])

    df['col8'] = pd.to_datetime(df['col8'], format='%Y%m%d%H%M%S', errors='coerce')
    df.sort_values(by=['col1', 'col8'], inplace=True)
    df['测点完整名称'] = df.apply(get_name, axis=1)
    df.to_csv('d://cms_data.csv', index=False, encoding='utf8')