//@version=5
strategy("GG", overlay=true)


smalengt50 = 50
emalengt12 = 12
emalengt21 = 21


sma50 = ta.sma(close, 50)
ema12 = ta.ema(close, 12)
ema21 = ta.ema(close, 21)


// 1. Put these "na"s.

var line stopLossLine = na
var line takeProfitLine = na


// 2. Adding logic to manually reset or extend the lines based on if we are in a position or not.

if strategy.position_size == 0
    stopLossLine := na
    takeProfitLine := na
else
    stopLossLine.set_x2(bar_index)
    takeProfitLine.set_x2(bar_index) //


lc = ta.crossover(ema12, ema21)
sc = ta.crossunder(ema12, ema21)


if lc and strategy.position_size == 0
    stopLoss = close * (1 - 0.03)

    takeProfit = close* (1 + 0.03)

// 3. Draw the start of the lines when we enter a position.

    stopLossLine := line.new(bar_index, stopLoss, bar_index, stopLoss, color=color.red)
    takeProfitLine := line.new(bar_index, takeProfit, bar_index, takeProfit, color=color.green) //


    strategy.entry("Long", strategy.long, stop=stopLoss, limit=takeProfit)
    strategy.exit("SL/TP", "Long", stop=stopLoss, limit=takeProfit)
if sc and strategy.position_size == 0
    stopLoss = close * (1 + 0.03)

    takeProfit = close * (1 - 0.03)

// 3. Draw the start of the lines when we enter a position.

    stopLossLine := line.new(bar_index, stopLoss, bar_index, stopLoss, color=color.red)
    takeProfitLine := line.new(bar_index, takeProfit, bar_index, takeProfit, color=color.green) //


    strategy.entry("Short", strategy.short, stop=stopLoss, limit=takeProfit)
    strategy.exit("SL/TP", "Short", stop=stopLoss, limit=takeProfit)


bandColor50 = sma50 < sma50[1] ? #ffa73c : color.rgb(33, 184, 243)
bandColor = ema12 > ema21 ? color.green : color.red
plot(ema12, color=bandColor)
plot(ema21, color=bandColor)
plot(sma50, color=bandColor50)