#education purpose
# indie:lang_version = 4
from indie import indicator, param, plot, color, Plot, MutSeriesF
from indie.algorithms import Sma

@indicator("DeMarker v2")
@param.int("per", default=13, min=1, title="Period")
@plot(color=color.WHITE)
def Main(self, per):
    demax = MutSeriesF.new(0)
    demin = MutSeriesF.new(0)
    
    if self.high[0] > self.high[1]:
        demax[0] = self.high[0] - self.high[1]
    
    if self.low[0] < self.low[1]:
        demin[0] = self.low[1] - self.low[0]
    
    demax_av = Sma.new(demax, per)
    demin_av = Sma.new(demin, per)
    
    dmark = demax_av[0] / (demax_av[0] + demin_av[0])
    
    h1 = Plot(0.3, color=color.BLUE)
    h2 = Plot(0.7, color=color.BLUE)
    
    return Plot(dmark), h1, h2