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//@version=5
indicator("ZEEDAN", overlay=true, shorttitle="ZEEDAN ")

// --- Note on Point & Figure ---
// The `pointfigure()` function and its related logic from the "London_Underground_V0" script are not available in Pine Script v5 and have been commented out below.

//=============Hull MA-----------------------------
show_hma = input.bool(true, title=" Display Centre Band")
hma_src = input.source(close, title=" Centre Band Source:")
hma_base_length = input.int(1, minval=1, title=" Centre Band Base Length:")
hma_length_scalar = input.int(6, minval=0, title=" Centre Band length Scalar:")

hullma(src, length) =>
    wma1 = ta.wma(src, length / 2)
    wma2 = ta.wma(src, length)
    ta.wma(2 * wma1 - wma2, math.round(math.sqrt(length)))

plot(not show_hma ? na : hullma(hma_src, hma_base_length + hma_length_scalar * 6), color=color.black, linewidth=4, title="Centre Band")

//====================channel 1 (ZEEDAN)==========================
len = input.int(34, minval=1, title=" Length 1")
src = input.source(close, title=" Source 1")
out = ta.ema(src, len)
plot(out, title="EMA 1", color=color.blue, style=plot.style_circles, linewidth=1)

last8h = ta.highest(close, 13)
lastl8 = ta.lowest(close, 13)

plot(last8h, color=color.red, linewidth=2, title=" Upper channel 1")
plot(lastl8, color=color.green, linewidth=2, title=" Lower channel 1")

// Signals (calculated but not plotted)
// Note: close > close is always false, likely intended for identifying bars where a cross happens and the *prior* close was higher/lower.
bearish = ta.crossunder(close, out) // Simplified to just the cross logic
bullish = ta.crossover(close, out)

//======================channel 2 (ZEEDAN)==================================
len2 = input.int(34, minval=1, title=" Length 2")
src2 = input.source(close, title=" Source 2")
out2 = ta.ema(src, len) // Uses 'src' and 'len' from Channel 1 inputs, which matches original v4 code
plot(out2, title="EMA 2", color=color.maroon, style=plot.style_circles, linewidth=1)

last8h2 = ta.highest(close, 34)
lastl82 = ta.lowest(close, 34)

plot(last8h2, color=color.black, style=plot.style_line, linewidth=1, title=" Upper channel 2")
plot(lastl82, color=color.black, style=plot.style_line, linewidth=1, title=" Lower channel 2")

bearish2 = ta.crossunder(close, out)
bullish2 = ta.crossover(close, out)

//======================Pivot Channel (ZEEDAN)==================================
length1 = input.int(13, minval=1, title=" Pivot Channel upper length")
length2 = input.int(13, minval=1, title=" Pivot Channel lower length")

// Fix: highest/lowest needs a source series and a length integer.
upper = ta.highest(high, length1)
lower = ta.lowest(low, length2)

basis = math.avg(upper, lower)

l = plot(lower, style=plot.style_circles, linewidth=2, color=color.green, title="Pivott Channel lower")
u = plot(upper, style=plot.style_circles, linewidth=2, color=color.red, title="Pivott Channel upper")

fill(u, l, color=color.new(color.black, 100), title="Fill Channel")

//========={RS} spike hunter (ZEEDAN)================================================================================//
// Note: 'n' variable was redefined as 'bar_index' for V5 compliance.
n = bar_index < 4000 ? bar_index : 4000
tr = ta.tr(true)
_atr = math.sum(tr, n + 1) / (n + 1)

top = (high - math.max(close, open)) > tr * 0.5 and tr > _atr
bot = (math.min(close, open) - low) > tr * 0.5 and tr > _atr

plotchar(top, color=color.blue, text="", title="Top Spike")
plotchar(bot, location=location.belowbar, color=color.blue, text="", title="Bottom Spike")

//------Moddified [RS]Fractals V2 (ZEEDAN)
length_f = input.int(22, title=" Fractal Length")
filterFractals = input.bool(true, title=" Signal filter")

// Original V4 logic translated to V5 syntax.
ftop = high[2] > high[3] and high[2] > high[4] and high[2] > high[1] and high[2] > high[0]
fbot = low[2] < low[3] and low[2] < low[4] and low[2] < low[1] and low[1] < low[0]

topf = ftop and high[2] >= ta.highest(high, length_f)
botf = fbot and low[2] <= ta.lowest(low, length_f)

filteredtopf = filterFractals ? topf : ftop
filteredbotf = filterFractals ? botf : fbot

plotshape(filteredtopf, style=shape.triangledown, location=location.abovebar, color=color.gray, text="..........", offset=-2, title="Filtered Top Fractal")
plotshape(filteredbotf, style=shape.triangleup, location=location.belowbar, color=color.gray, text="..........", offset=-2, title="Filtered Bottom Fractal")

//================================================================================//
// START OF London_Underground_V0 SCRIPT LOGIC
//================================================================================//
len_lu = input.int(21, minval=1, title="[LU] Length")
src_lu = input.source(close, title="[LU] Source")
out_lu = ta.ema(src_lu, len_lu)
plot(out_lu, title="[LU] EMA", color=color.blue)
last8h_lu = ta.highest(close, 13)
lastl8_lu = ta.lowest(close, 13)

plot(last8h_lu, color=color.black, style=plot.style_line, linewidth=3, title="[LU] Upper channel")
plot(lastl8_lu, color=color.black, style=plot.style_line, linewidth=3, title="[LU] Lower channel")

bearish_lu = ta.crossunder(close, out_lu)
bullish_lu = ta.crossover(close, out_lu)

//======{RS} Point and Figure (Removed due to v5 incompatibility) =======================================================//
// These inputs remain in the script, but the logic using them is commented out as the 'pointfigure' function is gone in V5.
tf = input.timeframe('240', title="[LU] P&F Timeframe")
M = input.string('ATR', title="[LU] P&F Method")
P = input.float(14.00, title="[LU] P&F P")
W = input.int(1, title="[LU] P&F W")
// pf = pointfigure(syminfo.tickerid, 'close', M, P, W) // Function not available in v5
// spfc = request.security(pf, tf, close)
// p2 = plot(spfc, color=color.red, linewidth=4, title="[LU] Central Line (P&F - Disabled)")

//============================Ichomku (London Underground)---------------------------------------------//
show_cloud_lu = input.bool(true, title="[LU] Display Ichimoku Cloud:")
// Renamed input variables to avoid conflicts with function arguments
conversionPeriods_lu = input.int(34, minval=1, title="[LU] Conversion Periods")
basePeriods_lu = input.int(26, minval=1, title="[LU] Base Periods")
laggingSpan2Periods_lu = input.int(52, minval=1, title="[LU] Lagging Span 2 Periods")
displacement_lu = input.int(26, minval=1, title="[LU] Displacement")

donchian_lu(len) => math.avg(ta.lowest(len), ta.highest(len))

conversionLine = donchian_lu(conversionPeriods_lu)
baseLine = donchian_lu(basePeriods_lu)
leadLine1 = math.avg(conversionLine, baseLine)
leadLine2 = donchian_lu(laggingSpan2Periods_lu)

plot(not show_cloud_lu ? na : conversionLine, color=color.green, linewidth=3, style=plot.style_line, title="[LU] Mid line resistance levels")
plot(baseLine, color=color.maroon, linewidth=4, title="[LU] Base Line")

p1_lu = plot(not show_cloud_lu ? na : leadLine1, offset = displacement_lu, color=color.white, linewidth=1, title="[LU] Lead 1")
p3_lu = plot(not show_cloud_lu ? na : leadLine2, offset = displacement_lu, color=color.blue, linewidth=4, title="[LU] Lead 2")

fill(p1_lu, p3_lu, color=color.new(color.blue, 100))
//----------------------------------------------------------------------------////