//@version=4
study(title="RSC Trend Trading Study", shorttitle="RSC TTS", overlay=true)
lengthHigher = input(title="Buy Donchian Channel Period", defval=20, minval=1)
lengthLower = input(title="Buy Donchian Channel Period", defval=10, minval=1)
smaFast = input(title="SMA Fast", defval=50)
smaSlow = input(title="SMA Slow", defval=200)
buyOverSma50 = input(title="Buy Over SMA 50 Close", defval=true)
buyOverSma50andSma200 = input(title="Buy Over SMA 50 & 200 Close", defval=true)
lower = lowest(lengthLower)
upper = highest(lengthHigher)
//basis = avg(upper, lower)
ma200 = sma(close, smaSlow)
ma50 = sma(close, smaFast)
u = plot(upper, color=color.aqua, linewidth=2, transp=0)
l = plot(lower, color=color.orange, linewidth=2, transp=0)
plot(ma50, color=color.red, linewidth=2, transp=0)
plot(ma200, color=color.green, linewidth=2, transp=0)
fill(u, l, color=color.blue)

rscTiActive = 0
rscTi = 0

if (buyOverSma50 and not buyOverSma50andSma200)
    if (high >= upper and close > ma50)
        rscTi := 1
        //strategy.entry("Long", strategy.long)

if (buyOverSma50andSma200)
    if (high >= upper and close > ma200 and close > ma50)
        rscTi := 1
        //strategy.entry("Long", strategy.long)

if (low <= lower)
    rscTi := -1
    //strategy.entry("Short", strategy.short, when=low <= lower)

rscTiActive := rscTi == 1 or rscTi == -1 ? rscTi : rscTiActive[1]
rscTi := rscTiActive[1] == rscTi ? 0 : rscTi

plotshape(rscTi == 1 ? true : false, location=location.belowbar, style=shape.triangleup, color=color.aqua, size=size.tiny, text="Buy", textcolor=color.aqua, transp=0) 
plotshape(rscTi == -1 ? true : false, location=location.abovebar, style=shape.triangledown, color=color.red, size=size.tiny, text="Sell", textcolor=color.red, transp=0)

alertcondition(rscTi == 1 ? true : false, title="RSC TT Buy", message='{"content": "RSC Trend Trade Buy Alert:\\n {{exchange}}:{{ticker}}\\n Price: {{close}}"}')
alertcondition(rscTi == -1 ? true : false, title="RSC TT Sell", message='{"content": "RSC Trend Trade Sell Alert:\\n {{exchange}}:{{ticker}}\\n Price: {{close}}"}')