Midpoint Levels day/week/month/high/low /close

//version=5
indicator("Midpoint Levels + Previous Week Close", overlay=true)


// === Inputs for Day Midpoint ===
showDay = input.bool(true, "Show Day Midpoint")
dayColor = input.color(color.orange, "Day Midpoint Color")
dayWidth = input.int(1, "Day Line Thickness", minval=1, maxval=5)
dayStyleOpt = input.string("Solid", "Day Line Style", options=["Solid", "Dashed", "Dotted"])
dayStyle = dayStyleOpt == "Dashed" ? line.style_dashed : dayStyleOpt == "Dotted" ? line.style_dotted : line.style_solid

// === Inputs for Week Midpoint ===
showWeek = input.bool(true, "Show Week Midpoint")
weekColor = input.color(color.blue, "Week Midpoint Color")
weekWidth = input.int(1, "Week Line Thickness", minval=1, maxval=5)
weekStyleOpt = input.string("Solid", "Week Line Style", options=["Solid", "Dashed", "Dotted"])
weekStyle = weekStyleOpt == "Dashed" ? line.style_dashed : weekStyleOpt == "Dotted" ? line.style_dotted : line.style_solid

// === Inputs for Month Midpoint ===
showMonth = input.bool(true, "Show Month Midpoint")
monthColor = input.color(color.purple, "Month Midpoint Color")
monthWidth = input.int(1, "Month Line Thickness", minval=1, maxval=5)
monthStyleOpt = input.string("Solid", "Month Line Style", options=["Solid", "Dashed", "Dotted"])
monthStyle = monthStyleOpt == "Dashed" ? line.style_dashed : monthStyleOpt == "Dotted" ? line.style_dotted : line.style_solid

// === Inputs for Previous Week Close ===
showWeekClose = input.bool(true, "Show Previous Week Close")
prevWeekCloseColor = input.color(color.red, "Previous Week Close Color")
prevWeekCloseWidth = input.int(1, "Week Close Line Thickness", minval=1, maxval=5)
weekCloseStyleOpt = input.string("Solid", "Week Close Line Style", options=["Solid", "Dashed", "Dotted"])
weekCloseStyle = weekCloseStyleOpt == "Dashed" ? line.style_dashed : weekCloseStyleOpt == "Dotted" ? line.style_dotted : line.style_solid

// === Fetch Previous Highs, Lows, Closes
prevDayHigh = request.security(syminfo.tickerid, "D", high[1], lookahead=barmerge.lookahead_on)
prevDayLow = request.security(syminfo.tickerid, "D", low[1], lookahead=barmerge.lookahead_on)
prevWeekHigh = request.security(syminfo.tickerid, "W", high[1], lookahead=barmerge.lookahead_on)
prevWeekLow = request.security(syminfo.tickerid, "W", low[1], lookahead=barmerge.lookahead_on)
prevMonthHigh = request.security(syminfo.tickerid, "M", high[1], lookahead=barmerge.lookahead_on)
prevMonthLow = request.security(syminfo.tickerid, "M", low[1], lookahead=barmerge.lookahead_on)
prevWeekClose = request.security(syminfo.tickerid, "W", close[1], lookahead=barmerge.lookahead_on)

// === Calculate Midpoints
dayMid = (prevDayHigh + prevDayLow) / 2
weekMid = (prevWeekHigh + prevWeekLow) / 2
monthMid = (prevMonthHigh + prevMonthLow) / 2

// === Detect new time periods
newDay = ta.change(time("D"))
newWeek = ta.change(time("W"))
newMonth = ta.change(time("M"))

// === Line variables
var line dayLine = na
var line weekLine = na
var line monthLine = na
var line weekCloseLine = na

// === Create/Update Lines Conditionally
if newDay and showDay
if not na(dayLine)
line.delete(dayLine)
dayLine := line.new(bar_index, dayMid, bar_index + 1, dayMid,color=dayColor, width=dayWidth, style=dayStyle, extend=extend.right)


if newWeek
if not na(weekLine)
line.delete(weekLine)
if showWeek
weekLine := line.new(bar_index, weekMid, bar_index + 1, weekMid,color=weekColor, width=weekWidth, style=weekStyle, extend=extend.right)


if not na(weekCloseLine)
line.delete(weekCloseLine)
if showWeekClose
weekCloseLine := line.new(bar_index, prevWeekClose, bar_index + 1, prevWeekClose,color=prevWeekCloseColor, width=prevWeekCloseWidth, style=weekCloseStyle, extend=extend.right)


if newMonth and showMonth
if not na(monthLine)
line.delete(monthLine)
monthLine := line.new(bar_index, monthMid, bar_index + 1, monthMid,color=monthColor, width=monthWidth, style=monthStyle, extend=extend.right)

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// === Inputs: Previous Day High/Low/Close
showPrevHigh = input.bool(true, "Show Previous Day High")
prevHighColor = input.color(color.green, "Prev Day High Color")
prevHighWidth = input.int(1, "Prev Day High Thickness", minval=1, maxval=5)
prevHighStyleOpt = input.string("Solid", "Prev Day High Style", options=["Solid", "Dashed", "Dotted"])
prevHighStyle = prevHighStyleOpt == "Dashed" ? line.style_dashed : prevHighStyleOpt == "Dotted" ? line.style_dotted : line.style_solid

showPrevLow = input.bool(true, "Show Previous Day Low")
prevLowColor = input.color(color.maroon, "Prev Day Low Color")
prevLowWidth = input.int(1, "Prev Day Low Thickness", minval=1, maxval=5)
prevLowStyleOpt = input.string("Solid", "Prev Day Low Style", options=["Solid", "Dashed", "Dotted"])
prevLowStyle = prevLowStyleOpt == "Dashed" ? line.style_dashed : prevLowStyleOpt == "Dotted" ? line.style_dotted : line.style_solid

showPrevClose = input.bool(true, "Show Previous Day Close")
prevCloseColor = input.color(color.navy, "Prev Day Close Color")
prevCloseWidth = input.int(1, "Prev Day Close Thickness", minval=1, maxval=5)
prevCloseStyleOpt = input.string("Solid", "Prev Day Close Style", options=["Solid", "Dashed", "Dotted"])
prevCloseStyle = prevCloseStyleOpt == "Dashed" ? line.style_dashed : prevCloseStyleOpt == "Dotted" ? line.style_dotted : line.style_solid

prevDayClose = request.security(syminfo.tickerid, "D", close[1], lookahead=barmerge.lookahead_on)
var line prevHighLine = na
var line prevLowLine = na
var line prevCloseLine = na
// === Previous Day High
if not na(prevHighLine)
line.delete(prevHighLine)
if showPrevHigh
prevHighLine := line.new(bar_index, prevDayHigh, bar_index + 1, prevDayHigh, color=prevHighColor, width=prevHighWidth, style=prevHighStyle, extend=extend.right)


// === Previous Day Low
if not na(prevLowLine)
line.delete(prevLowLine)
if showPrevLow
prevLowLine := line.new(bar_index, prevDayLow, bar_index + 1, prevDayLow,color=prevLowColor, width=prevLowWidth, style=prevLowStyle, extend=extend.right)


// === Previous Day Close
if not na(prevCloseLine)
line.delete(prevCloseLine)
if showPrevClose
prevCloseLine := line.new(bar_index, prevDayClose, bar_index + 1, prevDayClose, color=prevCloseColor, width=prevCloseWidth, style=prevCloseStyle, extend=extend.right)