TopSellButtonBuy

//@version=4
strategy("TopSellButtonBuy", overlay=true)
length_1 = input(12)
length_2 = input(30)
check = input(24*60)
lot = input(1000)
min_win = input(0.01)
h = highest(check)
l = lowest(check)
m = (h+l)/2
ema1 = ema(close, length_1)
ema2 = ema(close, length_2)
plot(ema1, title ='EMA1', color= color.blue, linewidth = 1)
plot(ema2, title ='EMA2', color= color.orange, linewidth = 2)

plot(m, title='Middle_line', color=color.yellow, linewidth=1)
plot(h, title='Highest_line', color=color.red, linewidth=2)
plot(l, title='Lowest_line', color=color.green, linewidth=2)
// decide buy or sell

direction = open - ema1
threshold = input(0.75)
buylimit = m - (m-l)*threshold 
selllimit = (h-m)*threshold + m
plot(selllimit, title='Highest_line', color=color.red, linewidth=1)
plot(buylimit, title='Lowest_line', color=color.green, linewidth=1)


if open > selllimit and direction < 0
    strategy.close("buy")
    strategy.entry("sell", strategy.short, lot)
if open < buylimit and direction > 0
    strategy.close("sell")
    strategy.entry("buy", strategy.long, lot)
    
    
if close >= m and ema1 <= ema2
    strategy.close("buy")

if close <= m and ema1 >= ema2
    strategy.close("sell")