Master Spread 2 - Multi Pairs

//@version=6
indicator("Master Spread 2 - Multi Pairs", overlay=false, max_labels_count=30, max_lines_count=30)

// ---------- Настройки ----------
symbolB  = input.symbol("", "Leg 2")
symbolC  = input.symbol("", "Leg 3")
symbolD  = input.symbol("", "Leg 4")
symbolE  = input.symbol("", "Leg 5")
symbolF  = input.symbol("", "Leg 6")
symbolG  = input.symbol("", "Leg 7")
symbolH  = input.symbol("", "Leg 8")
symbolI  = input.symbol("", "Leg 9")
symbolJ  = input.symbol("", "Leg 10")

entryLevel = input.float(2, "Entry Level (%)", step=0.01)
showWeekends = input.bool(true, "Подсвечивать выходные")
weekendClr   = input.color(color.new(color.black, 80), "Цвет выходных")

lineWidth = input.int(1, "Толщина линий", minval=1, maxval=5)

// Цвета для 9 легов
colB = input.color(color.new(color.orange,   0), "Цвет Leg 2")
colC = input.color(color.new(color.yellow,   0), "Цвет Leg 3")
colD = input.color(color.new(color.fuchsia,  0), "Цвет Leg 4")
colE = input.color(color.new(color.aqua,     0), "Цвет Leg 5")
colF = input.color(color.new(color.teal,     0), "Цвет Leg 6")
colG = input.color(color.new(color.purple,   0), "Цвет Leg 7")
colH = input.color(color.new(color.red,      0), "Цвет Leg 8")
colI = input.color(color.new(color.blue,     0), "Цвет Leg 9")
colJ = input.color(color.new(color.green,    0), "Цвет Leg 10")

// ---------- Функция: только название биржи ----------
f_exchangeName(_symbol) =>
    parts = str.split(_symbol, ":")
    array.size(parts) > 1 ? array.get(parts, 0) : _symbol

// ---------- Данные ----------
a = request.security(syminfo.tickerid, timeframe.period, close, lookahead = barmerge.lookahead_on)

b = symbolB != "" ? request.security(symbolB, timeframe.period, close, lookahead = barmerge.lookahead_on) : na
c = symbolC != "" ? request.security(symbolC, timeframe.period, close, lookahead = barmerge.lookahead_on) : na
d = symbolD != "" ? request.security(symbolD, timeframe.period, close, lookahead = barmerge.lookahead_on) : na
e = symbolE != "" ? request.security(symbolE, timeframe.period, close, lookahead = barmerge.lookahead_on) : na
f = symbolF != "" ? request.security(symbolF, timeframe.period, close, lookahead = barmerge.lookahead_on) : na
g = symbolG != "" ? request.security(symbolG, timeframe.period, close, lookahead = barmerge.lookahead_on) : na
h = symbolH != "" ? request.security(symbolH, timeframe.period, close, lookahead = barmerge.lookahead_on) : na
i = symbolI != "" ? request.security(symbolI, timeframe.period, close, lookahead = barmerge.lookahead_on) : na
j = symbolJ != "" ? request.security(symbolJ, timeframe.period, close, lookahead = barmerge.lookahead_on) : na

// Расчёт спредов
spreadB = not na(b) ? (a / b - 1) * 100 : na
spreadC = not na(c) ? (a / c - 1) * 100 : na
spreadD = not na(d) ? (a / d - 1) * 100 : na
spreadE = not na(e) ? (a / e - 1) * 100 : na
spreadF = not na(f) ? (a / f - 1) * 100 : na
spreadG = not na(g) ? (a / g - 1) * 100 : na
spreadH = not na(h) ? (a / h - 1) * 100 : na
spreadI = not na(i) ? (a / i - 1) * 100 : na
spreadJ = not na(j) ? (a / j - 1) * 100 : na

// ---------- Графика (без вывода в легенду и шкалу) ----------
plot(spreadB, color=colB, style=plot.style_stepline, linewidth=lineWidth, display=display.data_window + display.pane)
plot(spreadC, color=colC, style=plot.style_stepline, linewidth=lineWidth, display=display.data_window + display.pane)
plot(spreadD, color=colD, style=plot.style_stepline, linewidth=lineWidth, display=display.data_window + display.pane)
plot(spreadE, color=colE, style=plot.style_stepline, linewidth=lineWidth, display=display.data_window + display.pane)
plot(spreadF, color=colF, style=plot.style_stepline, linewidth=lineWidth, display=display.data_window + display.pane)
plot(spreadG, color=colG, style=plot.style_stepline, linewidth=lineWidth, display=display.data_window + display.pane)
plot(spreadH, color=colH, style=plot.style_stepline, linewidth=lineWidth, display=display.data_window + display.pane)
plot(spreadI, color=colI, style=plot.style_stepline, linewidth=lineWidth, display=display.data_window + display.pane)
plot(spreadJ, color=colJ, style=plot.style_stepline, linewidth=lineWidth, display=display.data_window + display.pane)

plot(0,          color=color.new(color.white, 40), linewidth=1, display=display.pane)
plot(entryLevel, color=color.new(color.lime, 40),   linewidth=1)
plot(-entryLevel,color=color.new(color.lime, 40),   linewidth=1)

// Подсветка выходных
isWeekend = dayofweek == dayofweek.saturday or dayofweek == dayofweek.sunday
bgcolor(showWeekends and isWeekend ? weekendClr : na)

// ---------- Подписи: только название биржи на последнем баре ----------
var label lblB = na
var label lblC = na
var label lblD = na
var label lblE = na
var label lblF = na
var label lblG = na
var label lblH = na
var label lblI = na
var label lblJ = na

if barstate.islast
    if not na(spreadB) and symbolB != ""
        string exchB = f_exchangeName(symbolB)
        label.delete(lblB)
        lblB := label.new(bar_index, spreadB, exchB, style=label.style_label_left, color=color.new(colB, 100), textcolor=colB, size=size.small, xloc=xloc.bar_index, yloc=yloc.price)

    if not na(spreadC) and symbolC != ""
        string exchC = f_exchangeName(symbolC)
        label.delete(lblC)
        lblC := label.new(bar_index, spreadC, exchC, style=label.style_label_left, color=color.new(colC, 100), textcolor=colC, size=size.small, xloc=xloc.bar_index, yloc=yloc.price)

    if not na(spreadD) and symbolD != ""
        string exchD = f_exchangeName(symbolD)
        label.delete(lblD)
        lblD := label.new(bar_index, spreadD, exchD, style=label.style_label_left, color=color.new(colD, 100), textcolor=colD, size=size.small, xloc=xloc.bar_index, yloc=yloc.price)

    if not na(spreadE) and symbolE != ""
        string exchE = f_exchangeName(symbolE)
        label.delete(lblE)
        lblE := label.new(bar_index, spreadE, exchE, style=label.style_label_left, color=color.new(colE, 100), textcolor=colE, size=size.small, xloc=xloc.bar_index, yloc=yloc.price)

    if not na(spreadF) and symbolF != ""
        string exchF = f_exchangeName(symbolF)
        label.delete(lblF)
        lblF := label.new(bar_index, spreadF, exchF, style=label.style_label_left, color=color.new(colF, 100), textcolor=colF, size=size.small, xloc=xloc.bar_index, yloc=yloc.price)

    if not na(spreadG) and symbolG != ""
        string exchG = f_exchangeName(symbolG)
        label.delete(lblG)
        lblG := label.new(bar_index, spreadG, exchG, style=label.style_label_left, color=color.new(colG, 100), textcolor=colG, size=size.small, xloc=xloc.bar_index, yloc=yloc.price)

    if not na(spreadH) and symbolH != ""
        string exchH = f_exchangeName(symbolH)
        label.delete(lblH)
        lblH := label.new(bar_index, spreadH, exchH, style=label.style_label_left, color=color.new(colH, 100), textcolor=colH, size=size.small, xloc=xloc.bar_index, yloc=yloc.price)

    if not na(spreadI) and symbolI != ""
        string exchI = f_exchangeName(symbolI)
        label.delete(lblI)
        lblI := label.new(bar_index, spreadI, exchI, style=label.style_label_left, color=color.new(colI, 100), textcolor=colI, size=size.small, xloc=xloc.bar_index, yloc=yloc.price)

    if not na(spreadJ) and symbolJ != ""
        string exchJ = f_exchangeName(symbolJ)
        label.delete(lblJ)
        lblJ := label.new(bar_index, spreadJ, exchJ, style=label.style_label_left, color=color.new(colJ, 100), textcolor=colJ, size=size.small, xloc=xloc.bar_index, yloc=yloc.price)

// ---------- Оповещения ----------
anyCrossLevel = (
    ta.cross(spreadB, entryLevel) or ta.cross(spreadB, -entryLevel) or
    ta.cross(spreadC, entryLevel) or ta.cross(spreadC, -entryLevel) or
    ta.cross(spreadD, entryLevel) or ta.cross(spreadD, -entryLevel) or
    ta.cross(spreadE, entryLevel) or ta.cross(spreadE, -entryLevel) or
    ta.cross(spreadF, entryLevel) or ta.cross(spreadF, -entryLevel) or
    ta.cross(spreadG, entryLevel) or ta.cross(spreadG, -entryLevel) or
    ta.cross(spreadH, entryLevel) or ta.cross(spreadH, -entryLevel) or
    ta.cross(spreadI, entryLevel) or ta.cross(spreadI, -entryLevel) or
    ta.cross(spreadJ, entryLevel) or ta.cross(spreadJ, -entryLevel)
)

anyCrossZero = ta.cross(spreadB, 0) or ta.cross(spreadC, 0) or ta.cross(spreadD, 0) or ta.cross(spreadE, 0) or
               ta.cross(spreadF, 0) or ta.cross(spreadG, 0) or ta.cross(spreadH, 0) or ta.cross(spreadI, 0) or
               ta.cross(spreadJ, 0)

alertcondition(anyCrossLevel, title="Spread Level Cross (any leg)", 
     message="Спред достиг уровня ±0.15% на одном из легов {{ticker}} {{interval}} Close: {{close}}")

alertcondition(anyCrossZero, title="Equal Price Cross (any leg)", 
     message="Цены сравнялись (спред = 0%) на одном из легов {{ticker}} {{interval}} Close: {{close}}")