import pandas as pd
import numpy as np
import helpers.constants as cte


class MonthlyValues:
  def __init__(self):
    self._month_hour = None

  @staticmethod
  def get_mean_values(values):
    out = None
    if values is not None:
      out = pd.DataFrame(values).groupby('month', as_index=False).mean()
    return out

  @staticmethod
  def get_total_month(values):
    out = None
    if values is not None:
      out = pd.DataFrame(values).groupby('month', as_index=False).sum()
    return out

  @property
  def month_hour(self):
    if self._month_hour is None:
      array = []
      for i in range(0, 12):
        total_hours = cte.days_of_month[i] * 24
        array = np.concatenate((array, np.full(total_hours, i + 1)))
      self._month_hour = pd.DataFrame(array, columns=['month'])
    return self._month_hour