import copy
import multiprocessing
import warnings
from os import *

import chardet
import pandas as pd

warnings.filterwarnings("ignore")

# read_path = r'/home/wzl/test_data/红阳'
# save_dir = r'/home/wzl/test_data/整理'

read_path = r'D:\data\红阳\红阳秒级分测点\红阳'
save_dir = r'D:\data\红阳\红阳秒级分测点\整理'

def __build_directory_dict(directory_dict, path, filter_types=None):
    # 遍历目录下的所有项
    for item in listdir(path):
        item_path = path.join(path, item)
        if path.isdir(item_path):
            __build_directory_dict(directory_dict, item_path, filter_types=filter_types)
        elif 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):
    if path.isfile(read_path):
        return [read_path]

    directory_dict = {}
    __build_directory_dict(directory_dict, read_path, filter_types=['xls', 'xlsx', 'csv', 'gz'])

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


all_files = read_excel_files(read_path)


# 获取文件编码
def detect_file_encoding(filename):
    # 读取文件的前1000个字节（足够用于大多数编码检测）
    with open(filename, 'rb') as f:
        rawdata = f.read(1000)
    result = chardet.detect(rawdata)
    encoding = result['encoding']

    if encoding is None:
        encoding = 'gb18030'

    if encoding.lower() in ['utf-8', 'ascii', 'utf8']:
        return 'utf-8'

    return 'gb18030'


def read_and_organize(file):
    df = pd.read_csv(file, encoding=detect_file_encoding(file))
    return file, df


if __name__ == '__main__':

    with multiprocessing.Pool(10) as pool:
        bak_datas = pool.starmap(read_and_organize, [(i,) for i in all_files])

    datas = copy.deepcopy(bak_datas)
    wind_name_df = dict()
    for file, df in datas:
        all_cols = [i for i in df.columns if i.find('#') > -1]
        col = all_cols[0]
        cedian = str(col).split("_")[-1]
        wind_names = set([str(i).split("#")[0].replace("红阳风电场_", "") for i in all_cols])

        print(file, df.columns)
        for wind_name in wind_names:
            cols = [i for i in all_cols if i.find('_' + wind_name) > -1]
            cols.insert(0, '统计时间')
            query_df = df[cols]
            query_df.columns = [str(i).split('_')[-1] for i in query_df.columns]
            query_df['风机编号'] = wind_name
            if wind_name in wind_name_df.keys():
                now_df = wind_name_df[wind_name]
                wind_name_df[wind_name] = pd.merge(now_df, query_df, on=['统计时间', '风机编号'], how='outer')
            else:
                wind_name_df[wind_name] = query_df

    for wind_name, df in wind_name_df.items():
        df.to_csv(path.join(save_dir, wind_name + '#.csv'), index=False, encoding='utf8')