// This Pine Script™ code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/

//@version=5
indicator("Börsenampel", shorttitle = 'Börsenampel v2', overlay = true, max_labels_count = 500, max_lines_count = 500, max_boxes_count = 500, max_polylines_count = 100, max_bars_back = 5000)


// Einstellbare Parameter
sym_ma_length = input.int(21, minval=1, title="Tages-Länge des gleitenden Durchschnitts (Preis)")
spx_ma_length = input.int(50, minval=1, title="Tages-Länge des gleitenden Durchschnitts (SPX)")


// Colors
color NONE      = color(na)
color LIME      = color.green
color LIME_LT   = color.new(LIME, 75)
color MAROON    = color.maroon
color MAROON_LT = color.new(MAROON, 60)
color YELLOW    = color.yellow
color YELLOW_LT = color.new(YELLOW, 80)


// Tagesdaten unabhängig der angezeigten Zeiteinheit lesen (Achtung bei Woche / Monat falsche Anzeige)
price_day       = request.security(syminfo.tickerid, "D", close)
volume_day      = request.security(syminfo.tickerid, "D", volume)
volume_day_ixic = request.security("TVOLQ",  "D", close)
volume_day_nya  = request.security("TVOL",   "D", close)
spx_day         = request.security("SP:SPX", "D", close)


// Berechnung der gleitenden Durchschnitte
price_sma = ta.sma(price_day, sym_ma_length)
spx_sma   = ta.sma(spx_day,   spx_ma_length)


// Preise und Preisänderung
price_today     = price_day[0]
price_yesterday = price_day[1]
price_change    = (price_today - price_yesterday) / price_yesterday * 100
spx_today       = spx_day[0]
spx_yesterday   = spx_day[1]


// Berechnung des Volumens 
volume_today     = volume_day[0]
volume_yesterday = volume_day[1]

if ticker.standard() == "TVC:IXIC" or ticker.standard() == "NASDAQ_DLY:IXIC"
    volume_today     := volume_day_ixic[0]
    volume_yesterday := volume_day_ixic[1]

if ticker.standard() == "TVC:NYA" or ticker.standard() == "NYSE:NYA" 
    volume_today     := volume_day_nya[0]
    volume_yesterday := volume_day_nya[1]


// Logik für die Hintergrundfarbe
isPriceBelowMA = price_today  <  price_sma
isSPXBelowMA   = spx_today    <  spx_sma
isPriceFalling = price_change <= -0.5
bgcolor(isSPXBelowMA ? MAROON_LT : (isPriceBelowMA and isPriceFalling ? YELLOW_LT : na))


// "Follow Through Day"-Signal
isFollowThroughDay = price_change > 1.25 and volume_today > volume_yesterday
plotshape(series = isFollowThroughDay, location = location.belowbar, color = LIME,   style = shape.triangledown, text = "FTD", textcolor = LIME)


// "Distribution Day"-Signal
isDistributionDay = price_change < -0.2 and volume_today > volume_yesterday
plotshape(series = isDistributionDay,  location = location.abovebar, color = MAROON, style = shape.triangledown, text = "DD",  textcolor = MAROON)