# indie:lang_version = 5
from indie import indicator, format, param, level, color, plot
from indie.algorithms import Sum, Mfv
from indie.math import divide


@indicator('CMF', format=format.PRICE)  # Chaikin Money Flow
@param.int('length', default=20, min=1, title='Length')
@level(0, line_color=color.GRAY, title='Zero')
@plot.line(color=color.GREEN, title='MF')
def Main(self, length):
    mfv_sum = Sum.new(Mfv.new(), length)[0]
    vol_sum = Sum.new(self.volume, length)[0]
    return divide(mfv_sum, vol_sum)