Parabolic SAR 0.01/0.08/0.37

// This Pine Script™ code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © TrendLab - Generated from Strategy Artifact

//@version=6
strategy("Parabolic SAR 0.01/0.08/0.37", overlay=true, default_qty_type=strategy.percent_of_equity, default_qty_value=100, initial_capital=100000, commission_type=strategy.commission.percent, commission_value=0.1, slippage=1)

// =============================================================================
// INPUTS
// =============================================================================
afStart = input.float(0.01, "AF Start", minval=0.001, step=0.01)
afStep = input.float(0.08, "AF Step", minval=0.001, step=0.01)
afMax = input.float(0.37, "AF Max", minval=0.01, step=0.01)

// =============================================================================
// INDICATOR CALCULATION
// =============================================================================
sar = ta.sar(afStart, afStep, afMax)

// SAR position relative to price
sarBelowPrice = sar < close
sarAbovePrice = sar > close

// Detect SAR flips using crossover/crossunder
sarFlipsBelow = ta.crossover(close, sar)   // SAR flips below price (uptrend begins)
sarFlipsAbove = ta.crossunder(close, sar)  // SAR flips above price (downtrend begins)

// =============================================================================
// STRATEGY LOGIC
// =============================================================================
// Entry: SAR flips below price (uptrend begins) - close crosses above SAR
// Exit: SAR flips above price (downtrend begins) - close crosses below SAR

if sarFlipsBelow
    strategy.entry("Long", strategy.long)

if sarFlipsAbove
    strategy.close("Long")

// =============================================================================
// PLOTTING
// =============================================================================
// Plot SAR dots with color based on position
sarColor = sarBelowPrice ? color.green : color.red
plot(sar, "Parabolic SAR", color=sarColor, style=plot.style_circles, linewidth=2)

// Plot entry/exit signals
plotshape(sarFlipsBelow, "Entry Signal", shape.triangleup, location.belowbar, color.green, size=size.small)
plotshape(sarFlipsAbove, "Exit Signal", shape.triangledown, location.abovebar, color.red, size=size.small)

// Background color for trend direction
bgcolor(sarBelowPrice ? color.new(color.green, 95) : color.new(color.red, 95))