"""
It is the place where we put all classes and types
common for all analytics code

For example, if you write someting which is used
in analytic_unit_manager, it should be here.

If you create something spicific which is used only in one place, 
like PatternDetectionCache, then it should not be here.
"""

import pandas as pd
from typing import Union, List, Tuple

AnalyticUnitId = str

ModelCache = dict

# TODO: explicit timestamp / value
TimeSeries = [List[Tuple[int, int]]]

"""
Example:

tsis = TimeSeriesIndex(['2017-12-31 16:00:00-08:00', '2017-12-31 17:00:00-08:00', '2017-12-31 18:00:00-08:00'])
ts = TimeSeries([4, 5, 6], tsis)
"""
Timestamp = Union[str, pd.Timestamp]

class TimeSeriesIndex(pd.DatetimeIndex):
    def __init__(self, timestamps: List[Timestamp]):
        super().__init__(timestamps, dtype='datetime64[ns]')

class TimeSeries(pd.Series):
    def __init__(self, values: List[object], tsindex: TimeSeriesIndex):
        super().__init__(values, index=tsindex)