#education purpose
# © 2025 Pavel Medd (@pavelmedd)
# Licensed under the MIT License. You may use, copy, modify, merge, publish, 
# distribute, sublicense, and/or sell copies of the Software, subject to the 
# conditions of the MIT license. Full license text: https://opensource.org/licenses/MIT
# indie:lang_version = 5
from indie import indicator, param, plot, color, MutSeriesF
from indie.algorithms import Sma

@indicator("DeMarker v2")
@param.int("per", default=13, min=1, title="Period")
@plot.line(color=color.WHITE, id='#plot_0')
@plot.line(id='#plot_1')
@plot.line(id='#plot_2')
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.Line(0.3, color=color.BLUE)
    h2 = plot.Line(0.7, color=color.BLUE)
    
    return plot.Line(dmark), plot.Line(h1.value, color=h1.color, offset=h1.offset), plot.Line(h2.value, color=h2.color, offset=h2.offset)