//@version=4
study('Swings High&Low with dates BY _Che', overlay=true, max_bars_back=3000)
testStartYear = input(2019, "Backtest Start Year")
testStartMonth = input(5, "Backtest Start Month")
testStartDay = input(1, "Backtest Start Day")
testStartHour = input(0, "Backtest Start Hour")
testStartMin = input(0, "Backtest Start Minute")
testPeriodStart = timestamp(testStartYear,testStartMonth,testStartDay,testStartHour,testStartMin)
testStopYear = input(2099, "Backtest Stop Year")
testStopMonth = input(1, "Backtest Stop Month")
testStopDay = input(30, "Backtest Stop Day")
testPeriodStop = timestamp(testStopYear,testStopMonth,testStopDay,0,0)
testPeriod() =>
time >= testPeriodStart and time <= testPeriodStop ? true : false
lenH = input(title='Length High', type=input.integer, defval=20, minval=1)
lenL = input(title='Length Low', type=input.integer, defval=20, minval=1)
fun(src, len, isHigh, _style, _yloc, _color) =>
p = nz(src[len])
isFound = true
for i = 0 to len * 2
if isHigh and src[i] > p
isFound := false
if not isHigh and src[i] < p
isFound := false
if isFound and testPeriod()
label.new(bar_index[len], p, tostring(p), style=_style, yloc=_yloc, color=_color)
line.new(bar_index[len], p, bar_index, p, extend=extend.right, color=_color)
fun(high, lenH, true, label.style_labeldown, yloc.abovebar, color.red)
fun(low, lenL, false, label.style_labelup, yloc.belowbar, color.green)
