# -*- coding:utf-8 -*-
import os
import _load

import faker_data
import csv
import yaml
import time
import global_var

from schedule import every, repeat, run_pending
from pathlib import Path
from datetime import datetime
from random import choice

"""
说明：
1. 用于文件的持续创建、写入、修改和创建
2. 输出目录为data，会在里面创建当天的子目录
3. 每1小时，生成一个CSV文件
4. 每1秒，向上面的文件中写入N条数据
5. 每10分钟，从当天的文件中随机找个1个文件，删除前N条数据
6. 每6小时，从所有的文件中随机删除1个文件
"""


# 定义公共的部分
path = Path(__file__)
etc_dir = path.parent.parent / "etc"
config_file_patch = etc_dir / "file_config.yml"

# 获取配置文件
with open(config_file_patch, "r", encoding='utf-8') as fy:
    config = yaml.safe_load(fy)

# 默认为当前的目录
data_dir = path.parent.parent / "data"
if 'DATADIR' in config.keys() and config['DATADIR']:
    data_dir = Path(config['DATADIR'])

# 初始化目录
if not data_dir.exists():
    # shutil.rmtree(data_dir)
    data_dir.mkdir()

# 定义文件的信息
def file_info():
    file_info_list = []
    now = datetime.now()
    now_day = now.strftime("%Y-%m-%d")
    now_hours = now.strftime("%Y-%m-%d-%H")
    today_dir = data_dir/now_day
    filename = "filetest_" + now_hours + ".csv"
    filepath = today_dir/filename

    file_info_list.append(now_day)
    file_info_list.append(now_hours)
    file_info_list.append(today_dir)
    file_info_list.append(filename)
    file_info_list.append(filepath)

    return (file_info_list)

# 每小时生成一个csv文件
# @repeat(every(1).hours)--MH:这个是基于运行的时间，不是基于系统时间
def new():
    print('new...')
    # 创建文件夹
    finfo = file_info()
    if not finfo[2].exists():
        finfo[2].mkdir()
    # 创建文件
    faker_data.save_data_csv(finfo[4], lines=100)


# 每2秒插入N条数据
@repeat(every(2).seconds)
def inserting():
    finfo = file_info()
    if finfo[4].exists():
        print('insert...')
        datas = faker_data.faker_data(lines=config['InsertRows'])[1:]
        with open(finfo[4], 'a+', encoding='utf-8', newline='') as file_csv:
            writer = csv.writer(file_csv, delimiter=',',
                                quotechar='"', quoting=csv.QUOTE_ALL)
            writer.writerows(datas)
    else:
        print(str(finfo[4])+" is not exists,wating")
        # 手动去调一下，让其整点创建
        new()


# 每隔10分钟删除100条数据
@repeat(every(10).minutes)
def deleting_data():
    finfo = file_info()
    # 获取所有文件
    files = list(finfo[2].glob('*.csv'))
    if len(files) > 1:
        file = choice(files[:-1])
        print(str(file) + "start delete data ....")
        # 删除掉前N条数据
        with open(file, 'rb') as fr:
            data = fr.readlines()
            new_data = data[config['DeleteRows']:]
        # 少于100条的不删除
        if len(new_data) > 100:
            with open(file, 'wb') as fw:
                fw.writelines(new_data)
    else:
        print("file number is less 1,wait next time.")


# 每隔6小时删除1个文件,低于3个不删除
@repeat(every(6).hours)
# @repeat(every(2).seconds)
def deleting_file():
    print("deleting file ....")
    # 从data目录中随机选一个
    files = list(data_dir.rglob('*.csv'))
    if len(files) > 3:
        file = choice(files[:-1])
        file.unlink()
    else:
        print("file num is less 3, not delete. wait next time.")

def main():
    start_flag = True
    while start_flag:
        start_flag = global_var.get_value('start_flag')
        run_pending()
        time.sleep(0.3)
    print("已经停止")


if __name__ == '__main__':
    main()