#! /usr/bin/env python
# -*- coding: utf-8 -*-

import io
import re

import numpy as np
import pandas as pd

from core import prepareMeta


def initData(cols=2, start_date="2017-01-01", end_date="2017-12-31", freq="1h"):
    dates = pd.date_range(start="2017-01-01", end="2017-12-31", freq="1h")
    data = {}
    dummy = np.arange(len(dates))
    for col in range(1, cols+1):
        data[f"var{col}"] = dummy*(col)
    return pd.DataFrame(data, index=dates)


def initMeta(metastring, data):
    fobj = io.StringIO(re.sub("\n[ \t]+", "\n", metastring))
    meta = pd.read_csv(fobj)
    return prepareMeta(meta, data)