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//@version=6

// ----- BASE OF THE INDICATOR
indicator(title = '[NBpkg] Indicator - Chaikin Money Flow with Areas', shorttitle = '[NB]IND.CMF.WithAreas', format = format.price, precision = 2, timeframe = '', timeframe_gaps = true)
var cumVol = 0.
cumVol := cumVol + nz(volume)
if barstate.islast and cumVol == 0
    runtime.error('No volume is provided by the data vendor.')
length = input.int(20, minval = 1)
ad = close == high and close == low or high == low ? 0 : (2 * close - low - high) / (high - low) * volume
mf = math.sum(ad, length) / math.sum(volume, length)
plot(mf, color = color.yellow, title = 'CMF Style')


// ----- INCLUDING CRITICAL LINES

// ZERO LINE
hline(0, linestyle = hline.style_dotted, linewidth = 1, color = color.white, editable = false)


// ----- BULLS LINES & FILL

lineLimitLong = input.float(defval = 0.05, step = 0.01, title = 'Limit Line for Longs: 0.05 is recomended')
hline(lineLimitLong, linestyle = hline.style_dotted, linewidth = 1, color = color.green, title = 'Limit for Longs')

buyPreassureMin = input.float(defval = 0.25, step = 0.01, title = 'Bull Area Min,: 0.25 is recomended')
buyPreassureMax = input.float(defval = 0.40, step = 0.01, title = 'Bull Area Max: 0.40 is recomended')


fill(hline(buyPreassureMin, linestyle = hline.style_dotted, linewidth = 1, color = color.lime, title = 'BullAreaMin'), hline(buyPreassureMax, linestyle = hline.style_dotted, linewidth = 1, color = color.lime, title = 'Bull Area Max'), color.new(color.lime, transp = 80), title = 'Bull Area Backround')

// ----- BEARS LINES & FILL

lineLimitShort = input.float(defval = -0.05, step = 0.01, title = 'Limit Line for Shorts: -0.05 is recomended')
hline(lineLimitShort, linestyle = hline.style_dotted, linewidth = 1, color = color.orange, title = 'Limit for Bears')

sellingPreassureMin = input.float(defval = -0.25, step = 0.01, title = 'Bear Area Min,: -0.25 is recomended')
sellingPreassureMax = input.float(defval = -0.40, step = 0.01, title = 'Bear Area Max: -0.40 is recomended')

fill(hline(sellingPreassureMin, linestyle = hline.style_dotted, linewidth = 1, color = color.red, title = 'Bear Area Min'), hline(sellingPreassureMax, linestyle = hline.style_dotted, linewidth = 1, color = color.red, title = 'Bear Area Max'), color.new(color.red, transp = 80), title = 'Bear Area Background')

// ----- ALERTS

float currentPrice = close

enterBullArea = ta.crossover(currentPrice, buyPreassureMin)
alertcondition(enterBullArea, title = 'Price in Bull Area', message = 'Price entered Bear Area')

leftBullArea = ta.crossunder(currentPrice, buyPreassureMin)
alertcondition(leftBullArea, title = 'Price out of Bull Area', message = 'Price has left the Bull Area')

enterBearArea = ta.crossunder(currentPrice, sellingPreassureMin)
alertcondition(enterBearArea, title = 'Price in Bear Area', message = 'Price entered Bear Area')

leftBearArea = ta.crossover(currentPrice, sellingPreassureMin)
alertcondition(leftBearArea, title = 'Price out of Bear Area', message = 'Price has left the Bear Area')