LTF History

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

//@version=6
indicator("LTF History", "ltf_depth", format = format.volume, overlay = false)

debugLabelUp(txt,overlay=true) =>
    label.new(bar_index, high, txt, yloc = yloc.abovebar, style = label.style_arrowdown, force_overlay = overlay, textcolor = color.black)
debugLabelDn(txt,overlay=true) =>
    label.new(bar_index, low, txt, yloc = yloc.belowbar, style = label.style_arrowup, force_overlay = overlay, textcolor = color.black)


[valreq, timereq] = request.security(syminfo.tickerid, timeframe.period, [volume*hl2, time])
[arrValreq, arrTimereq] = request.security_lower_tf(syminfo.tickerid, "3", [volume*hl2, time])

var bars_count = 0

// The history-referencing length for the expression must be a value between 0 and 5000.
if bars_count == 4000
    debugLabelUp(str.format("{2}\n{1}\n{0}",bar_index,valreq[5000], str.format_time(timereq[5000])))
    debugLabelDn(str.format("{0}\n{1}\n{2}",bar_index,array.size(arrValreq), str.format_time(timereq[0]) ))
if bars_count == 5000
    debugLabelUp(str.format("{2}\n{1}\n{0}",bar_index,valreq[5000], str.format_time(timereq[5000])))
    debugLabelDn(str.format("{0}\n{1}\n{2}",bar_index,array.size(arrValreq), str.format_time(timereq[0]) ))

// First bar with Lower Timeframe data available
if array.size(arrValreq) > 0
    var first_bar_withlt = debugLabelDn(str.format("{0}\n{1}\n{2}\n{3}\n{4}",bar_index,array.size(arrValreq)
         ,str.format_time(time)
         ,str.format_time(array.first(arrTimereq))
         ,str.format_time(array.last(arrTimereq))
     ))

// Self-Check
if barstate.isfirst
    debugLabelDn(str.format("{0}\n{1}", bar_index, bars_count))

if barstate.islastconfirmedhistory
    debugLabelDn(str.format("{0}\n{1}", bar_index, bars_count))


bars_count := bars_count + 1