Premium GOLD Signal

indicator("Premium GOLD Signal", shorttitle = "Premium GOLD Signal", overlay = true, max_lines_count = 500, max_labels_count = 500, max_boxes_count = 500, max_bars_back = 500)

emaLen     = input.int(9, "EMA Length", minval = 1, group = "Signal")
rsiLen     = input.int(14, "RSI Length", minval = 1, group = "Signal")
rsiLevel   = input.float(50, "RSI Level", group = "Signal")
oneAtATime = input.bool(false, "Hide same-direction signals while a trade is active", group = "Signal")

slLookback = input.int(4, "SL Lookback (previous candles)", minval = 1, group = "Risk")
slBuffer   = input.float(0.0, "SL Buffer (price)", minval = 0, step = 0.1, group = "Risk", tooltip = "Extra distance added beyond the swing low/high. 0 = exactly at the low/high.")

tpStep     = input.float(10.0, "TP Step (price)", minval = 0.01, step = 0.5, group = "Targets", tooltip = "TP1 = entry ± 1×step, TP2 = ± 2×step, TP3 = ± 3×step. For XAUUSD, 10.0 = $10 (4000 → 4010 / 4020 / 4030).")

showLevels = input.bool(true, "Show Entry / SL / TP zones", group = "Display")
showHits   = input.bool(true, "Mark TP / SL hits", group = "Display")
extBars    = input.int(10, "Extend beyond current bar", minval = 1, maxval = 100, group = "Display")
zoneTransp = input.int(80, "Zone transparency", minval = 0, maxval = 100, group = "Display")
fadeBars   = input.int(15, "Fade length on right (bars)", minval = 0, maxval = 100, group = "Display")
colorBars  = input.bool(true, "Color candles by trend", group = "Display")
showEma    = input.bool(true, "Show EMA", group = "Display")

slCol      = input.color(#f44336, "Stop Loss color", group = "Colors")
tpCol      = input.color(#43d443, "Take Profit color", group = "Colors")
entryCol   = input.color(#9e9e9e, "Entry color", group = "Colors")
emaCol     = input.color(#2962ff, "EMA color", group = "Colors")

showOB     = input.bool(true, "Show Order Blocks", group = "Order Blocks")
swingLen   = input.int(10, "Swing length", minval = 2, maxval = 50, group = "Order Blocks", tooltip = "Bars on each side used to confirm a swing high/low. Higher = fewer, stronger OBs.")
maxOB      = input.int(3, "Max OBs per side", minval = 1, maxval = 20, group = "Order Blocks")
obBullCol  = input.color(#2962ff, "Bullish OB", group = "Order Blocks")
obBearCol  = input.color(#e040fb, "Bearish OB", group = "Order Blocks")

showFVG    = input.bool(true, "Show Fair Value Gaps", group = "FVG")
fvgMinAtr  = input.float(0.25, "Min FVG size (× ATR)", minval = 0, step = 0.05, group = "FVG", tooltip = "Filters out tiny gaps. 0 = show all.")
maxFVG     = input.int(3, "Max FVGs per side", minval = 1, maxval = 20, group = "FVG")
fvgBullCol = input.color(#00bcd4, "Bullish FVG", group = "FVG")
fvgBearCol = input.color(#ff9800, "Bearish FVG", group = "FVG")

removeMitigated = input.bool(true, "Remove mitigated OBs / filled FVGs", group = "OB / FVG")

emaVal   = ta.ema(close, emaLen)
rsiVal   = ta.rsi(close, rsiLen)
atrVal   = ta.atr(14)

prevLow  = ta.lowest(low, slLookback)[1]
prevHigh = ta.highest(high, slLookback)[1]

bullCond = close > emaVal and rsiVal > rsiLevel
bearCond = close < emaVal and rsiVal < rsiLevel

var int   dir      = 0      // 1 = long, -1 = short, 0 = flat
var int   entryBar = na
var float entry    = na
var float sl       = na
var float tp1      = na
var float tp2      = na
var float tp3      = na
var bool  hit1     = false
var bool  hit2     = false
var bool  hit3     = false

var array<box>   zoneBoxes  = array.new<box>()
var array<line>  lvlLines   = array.new<line>()
var array<label> lvlLabels  = array.new<label>()
var array<label> markLabels = array.new<label>()

var array<box> bullOBs  = array.new<box>()
var array<box> bearOBs  = array.new<box>()
var array<box> bullFVGs = array.new<box>()
var array<box> bearFVGs = array.new<box>()

FADE_SEGS = 6

clearTrade() =>
    for b in zoneBoxes
        box.delete(b)
    for l in lvlLines
        line.delete(l)
    for lb in lvlLabels
        label.delete(lb)
    array.clear(zoneBoxes)
    array.clear(lvlLines)
    array.clear(lvlLabels)

clearMarks() =>
    for lb in markLabels
        label.delete(lb)
    array.clear(markLabels)

drawZone(int x1, int x2, float top, float bot, color col) =>
    fadeStart = math.max(x1, x2 - fadeBars)
    if fadeStart > x1
        array.push(zoneBoxes, box.new(x1, top, fadeStart, bot, border_color = color(na), border_width = 0, bgcolor = color.new(col, zoneTransp)))
    span = x2 - fadeStart
    for i = 0 to FADE_SEGS - 1
        a = fadeStart + math.round(span * i * 1.0 / FADE_SEGS)
        b = fadeStart + math.round(span * (i + 1) * 1.0 / FADE_SEGS)
        if b > a
            t = zoneTransp + (100.0 - zoneTransp) * (i + 1) / (FADE_SEGS + 1)
            array.push(zoneBoxes, box.new(a, top, b, bot, border_color = color(na), border_width = 0, bgcolor = color.new(col, t)))

drawLevel(int x1, int x2, float price, color col, string txt) =>
    array.push(lvlLines, line.new(x1, price, x2, price, color = col, width = 1))
    array.push(lvlLabels, label.new(x2, price, txt + ": " + str.tostring(price, format.mintick), style = label.style_label_left, color = col, textcolor = color.white, size = size.small))

drawTrade(int xEnd) =>
    clearTrade()
    drawZone(entryBar, xEnd, math.max(entry, sl),  math.min(entry, sl),  slCol)
    drawZone(entryBar, xEnd, math.max(entry, tp3), math.min(entry, tp3), tpCol)
    drawLevel(entryBar, xEnd, sl,    slCol,    "Stop Loss")
    drawLevel(entryBar, xEnd, entry, entryCol, "Entry")
    drawLevel(entryBar, xEnd, tp1,   tpCol,    "Take Profit 1")
    drawLevel(entryBar, xEnd, tp2,   tpCol,    "Take Profit 2")
    drawLevel(entryBar, xEnd, tp3,   tpCol,    "Take Profit 3")

addDot(bool above, color col) =>
    array.push(markLabels, label.new(bar_index, above ? high : low, "", yloc = above ? yloc.abovebar : yloc.belowbar, style = label.style_circle, color = col, size = size.tiny))

newZone(int x1, float top, float bot, color col, string txt) =>
    box.new(x1, top, bar_index + extBars, bot, border_color = color.new(col, 40), border_width = 1, bgcolor = color.new(col, 82

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