Supertrend Strategy

//@version=6
strategy("Supertrend Strategy", overlay=true, initial_capital=10000, default_qty_type=strategy.percent_of_equity, default_qty_value=100)

// Input parameters
atrPeriod = input.int(10, "ATR Length", minval=1)
factor = input.float(3.0, "Factor", minval=0.01, step=0.01)

// Risk management inputs
stopLossPercent = input.float(2.0, "Stop Loss %", minval=0.1, step=0.1)
takeProfitPercent = input.float(6.0, "Take Profit %", minval=0.1, step=0.1)

// Calculate Supertrend
[supertrend, direction] = ta.supertrend(factor, atrPeriod)
supertrend := barstate.isfirst ? na : supertrend

// Trend direction variables
isBullish = direction < 0  // Supertrend is bullish when direction < 0
isBearish = direction > 0  // Supertrend is bearish when direction > 0

// Previous bar trend
wasBullish = direction[1] < 0
wasBearish = direction[1] > 0

// Candle color conditions
isGreenCandle = close > open
isRedCandle = close < open

// Entry Logic: Fresh bullish trend after bearish trend with green candle
freshBullishTrend = wasBearish and isBullish and isGreenCandle
entryCondition = freshBullishTrend and strategy.position_size == 0

// Exit Logic: Bullish trend reverses to bearish with red candle
trendReversalExit = wasBullish and isBearish and isRedCandle
exitCondition = trendReversalExit and strategy.position_size > 0

// Calculate stop loss and take profit levels
var float entryPrice = na
var float stopLoss = na
var float takeProfit = na

if entryCondition
    entryPrice := close
    stopLoss := entryPrice * (1 - stopLossPercent / 100)
    takeProfit := entryPrice * (1 + takeProfitPercent / 100)

// Strategy execution
if entryCondition
    strategy.entry("Long", strategy.long, comment="Bullish Entry")

if exitCondition
    strategy.close("Long", comment="Bearish Exit")

// Stop loss and take profit orders
if strategy.position_size > 0
    strategy.exit("Exit", "Long", stop=stopLoss, limit=takeProfit, comment="SL/TP Exit")

// Plotting
upTrend = plot(direction < 0 ? supertrend : na, "Up Trend", color=color.green, style=plot.style_linebr, linewidth=2)
downTrend = plot(direction < 0 ? na : supertrend, "Down Trend", color=color.red, style=plot.style_linebr, linewidth=2)
bodyMiddle = plot(barstate.isfirst ? na : (open + close) / 2, "Body Middle", display=display.none)

// Background fills
fill(bodyMiddle, upTrend, title="Uptrend background", color=color.new(color.green, 90), fillgaps=false)
fill(bodyMiddle, downTrend, title="Downtrend background", color=color.new(color.red, 90), fillgaps=false)

// Plot entry and exit signals
plotshape(entryCondition, style=shape.triangleup, location=location.belowbar, color=color.green, size=size.normal, title="Buy Signal")
plotshape(exitCondition, style=shape.triangledown, location=location.abovebar, color=color.red, size=size.normal, title="Sell Signal")

// Plot stop loss and take profit levels
plot(strategy.position_size > 0 ? stopLoss : na, color=color.red, style=plot.style_linebr, linewidth=1, title="Stop Loss")
plot(strategy.position_size > 0 ? takeProfit : na, color=color.blue, style=plot.style_linebr, linewidth=1, title="Take Profit")

// Alerts
alertcondition(entryCondition, title='Long Entry Signal', message='Supertrend: Fresh bullish trend confirmed with green candle')
alertcondition(exitCondition, title='Long Exit Signal', message='Supertrend: Bullish trend reversed to bearish with red candle')

// Strategy information table
if barstate.islast
    var table infoTable = table.new(position.top_right, 2, 6, bgcolor=color.white, border_width=1)
    table.cell(infoTable, 0, 0, "Strategy Stats", text_color=color.black, text_size=size.small)
    table.cell(infoTable, 1, 0, "", text_color=color.black, text_size=size.small)
    table.cell(infoTable, 0, 1, "Total Trades", text_color=color.black, text_size=size.small)
    table.cell(infoTable, 1, 1, str.tostring(strategy.closedtrades), text_color=color.black, text_size=size.small)
    table.cell(infoTable, 0, 2, "Win Rate", text_color=color.black, text_size=size.small)
    table.cell(infoTable, 1, 2, str.tostring(math.round(strategy.wintrades / strategy.closedtrades * 100, 2)) + "%", text_color=color.black, text_size=size.small)
    table.cell(infoTable, 0, 3, "Net Profit", text_color=color.black, text_size=size.small)
    table.cell(infoTable, 1, 3, str.tostring(math.round(strategy.netprofit, 2)), text_color=color.black, text_size=size.small)
    table.cell(infoTable, 0, 4, "Max Drawdown", text_color=color.black, text_size=size.small)
    table.cell(infoTable, 1, 4, str.tostring(math.round(strategy.max_drawdown, 2)), text_color=color.black, text_size=size.small)
    table.cell(infoTable, 0, 5, "Profit Factor", text_color=color.black, text_size=size.small)
    table.cell(infoTable, 1, 5, str.tostring(math.round(strategy.grossprofit / math.abs(strategy.grossloss), 2)), text_color=color.black, text_size=size.small)