//@version=5
// ============================================================================
//  PipAtlas Pine v5 Strategy Template  ·  MIT License · (c) 2026 PipAtlas
//  Free to use/modify. Education only - NOT financial advice. Demo-first!
//  Companion guide: pipatlas.com/learn/conversions/mql5-to-pine-v5
// ============================================================================
strategy("PipAtlas ATR-Risk Template", overlay=true,
     initial_capital=10000,
     default_qty_type=strategy.fixed,
     default_qty_value=1,
     commission_type=strategy.commission.cash_per_order,
     commission_value=0.0)

// ---- Inputs ----------------------------------------------------------------
atrLen   = input.int(14,  "ATR length",            minval=1)
atrMult  = input.float(2.0, "Stop distance (ATR x)", step=0.1)
riskPct  = input.float(1.0, "Risk per trade %",    minval=0.1, step=0.1)
useRsi   = input.bool(true, "Require RSI filter")
rsiLen   = input.int(14, "RSI length")

// ---- Core series -----------------------------------------------------------
atr = ta.atr(atrLen)
rsi = ta.rsi(close, rsiLen)

// ---- Position sizing: risk % of equity / (stop distance in price) ----------
// FX example: convert pip-based risk by sizing on price distance directly.
stopDist = atr * atrMult
qty = strategy.equity * (riskPct / 100) / stopDist

// ---- Entry logic (translate your MQL5/Backtrader signal here) --------------
longSetup  = ta.crossover(ta.ema(close, 21), ta.ema(close, 55)) and (not useRsi or rsi > 50)
shortSetup = ta.crossunder(ta.ema(close, 21), ta.ema(close, 55)) and (not useRsi or rsi < 50)

if longSetup and strategy.position_size == 0
    strategy.entry("L", strategy.long, qty=qty)
    strategy.exit("L-X", from_entry="L", stop=close - stopDist, trail_points=atr * atrMult / syminfo.mintick)

if shortSetup and strategy.position_size == 0
    strategy.entry("S", strategy.short, qty=qty)
    strategy.exit("S-X", from_entry="S", stop=close + stopDist)

// ---- Visuals ---------------------------------------------------------------
plot(strategy.position_size != 0 ? close - stopDist : na, "Stop", color=color.red, style=plot.style_linebr)
bgcolor(longSetup ? color.new(color.green, 92) : shortSetup ? color.new(color.red, 92) : na)