Squeeze Momentum [trugurpala]

//@version=6
// Squeeze Momentum (LazyBear inspired) — Pine Script v6
// github.com/trugurpala/pinescriptv6 — Author: Ugur Pala
indicator("Squeeze Momentum [trugurpala]", overlay=false)

// ── Inputs ───────────────────────────────────────────────────────────────────
int   bbLen    = input.int(20,   "BB Length",   minval=1)
float bbMult   = input.float(2.0, "BB Mult",    step=0.1)
int   kcLen    = input.int(20,   "KC Length",   minval=1)
float kcMult   = input.float(1.5, "KC Mult",    step=0.1)

// ── Calculations ─────────────────────────────────────────────────────────────
// Bollinger Bands
[bbUpper, bbBasis, bbLower] = ta.bb(close, bbLen, bbMult)

// Keltner Channels
float kcMa    = ta.ema(close, kcLen)
float kcRange = ta.atr(kcLen) * kcMult
float kcUpper = kcMa + kcRange
float kcLower = kcMa - kcRange

// Squeeze: BB içinde mi KC?
bool sqzOn  = bbLower > kcLower and bbUpper < kcUpper
bool sqzOff = bbLower < kcLower and bbUpper > kcUpper
bool noSqz  = not sqzOn and not sqzOff

// Momentum — math.avg() v6'da yok, (a+b)/2 kullan
float highLow   = (ta.highest(kcLen) + ta.lowest(kcLen)) / 2
float highClose = (ta.highest(kcLen) + close) / 2
float midVal    = (highLow + highClose) / 2
float mom       = ta.linreg(close - midVal, kcLen, 0)

// ── Colors ───────────────────────────────────────────────────────────────────
color momColor = mom > 0
    ? (mom > mom[1] ? color.new(color.green,  0) : color.new(color.green, 50))
    : (mom < mom[1] ? color.new(color.red,    0) : color.new(color.red,   50))

// ── Visuals ──────────────────────────────────────────────────────────────────
plot(mom, "Momentum", momColor, style=plot.style_histogram, linewidth=4)
hline(0, "Zero", color.new(color.gray, 50))

plotshape(sqzOn,  "Squeeze On",  shape.circle, location.bottom,
    color.new(color.red,   20), size=size.tiny, title="Sqz On")
plotshape(sqzOff, "Squeeze Off", shape.circle, location.bottom,
    color.new(color.green, 20), size=size.tiny, title="Sqz Off")
plotshape(noSqz,  "No Squeeze",  shape.circle, location.bottom,
    color.new(color.gray,  40), size=size.tiny, title="No Sqz")

alertcondition(sqzOff and sqzOn[1], "Squeeze Fire", "Squeeze Released — {{ticker}}")