Crossing Moving Averages with ADX Filter

//@version=6
strategy("Crossing Moving Averages with ADX Filter)", overlay=true, pyramiding=0)

// === INPUTS ===
fastLen = input.int(20, title="Fast MA Length")
slowLen = input.int(120, title="Slow MA Length")

maType = input.string("SMA", title="Moving Average Type", options=["SMA", "EMA", "WMA", "LMA"])

//useATRStop = input.bool(true, title="Enable ATR Trailing Stop")
//atrLen  = input.int(20, title="ATR Length")
//atrMult = input.float(2.0, title="ATR Multiplier")

useADX       = input.bool(true, title="Enable ADX Filter")
adxLen       = input.int(14, title="ADX Length")
adxThreshold = input.float(20.0, title="ADX Threshold")

// === MA FUNCTION ===
ma(src, len) =>
    float out = na
    if maType == "SMA"
        out := ta.sma(src, len)
    else if maType == "EMA"
        out := ta.ema(src, len)
    else if maType == "WMA"
        out := ta.wma(src, len)
    else
        out := ta.rma(src, len)
    out

// === MOVING AVERAGES ===
fastMA = ma(close, fastLen)
slowMA = ma(close, slowLen)

longBias  = fastMA > slowMA
shortBias = fastMA < slowMA

// === ATR ===
//atr = ta.atr(atrLen)

// === MANUAL ADX ===
upMove   = high - high[1]
downMove = low[1] - low

plusDM  = (upMove > downMove and upMove > 0) ? upMove : 0.0
minusDM = (downMove > upMove and downMove > 0) ? downMove : 0.0

trur = ta.rma(ta.tr(true), adxLen)
plusDI  = 100 * ta.rma(plusDM, adxLen) / trur
minusDI = 100 * ta.rma(minusDM, adxLen) / trur

dx  = 100 * math.abs(plusDI - minusDI) / (plusDI + minusDI)
adx = ta.rma(dx, adxLen)

adxOK = not useADX or adx >= adxThreshold

// === ENTRY CONDITIONS ===
enterLong  = longBias and adxOK and strategy.position_size <= 0
enterShort = shortBias and adxOK and strategy.position_size >= 0

// === ENTRIES ===
if enterLong
    strategy.entry("Long", strategy.long)

if enterShort
    strategy.entry("Short", strategy.short)

// === ATR TRAILING STOPS (✅ CORRECT PAIRS) ===
//if useATRStop
 //   strategy.exit("Long ATR Exit", from_entry="Long", trail_points=atrMult * atr, trail_offset=atrMult * atr)

//if useATRStop
 //   strategy.exit("Short ATR Exit", from_entry="Short", trail_points=atrMult * atr, trail_offset=atrMult * atr)

// === PLOTS ===
plot(fastMA, "Fast MA", color=color.blue, linewidth=1)
plot(slowMA, "Slow MA", color=color.orange, linewidth=3)