Capital41 Session VWAP v2

// Copyright (c) 2026 Capital41 | MIT License
// CAPITAL41 SESSION VWAP v2

// What it does:
// - Calculates an intraday VWAP that resets each session.
// - Optional standard deviation band around VWAP for context.
// - Works on intraday timeframes with volume data.
// - Status badge showing VWAP value, distance, and position.
// - Alerts on VWAP and band crosses.
//
// v2 changes:
// - ADDED: Status badge (VWAP level, % distance, above/below).
// - ADDED: Alert conditions for VWAP and 1σ band crosses, gated by
//          barstate.isconfirmed.
//
// TradingView setup:
// 1) Open TradingView -> Pine Editor.
// 2) Paste this script, Save, and Add to chart.
// 3) Use 30m or 4h on BTC or US stocks.
// 4) Choose session times and timezone to match your market.
//
// Usage guide (30m/4h):
// - VWAP acts as fair value; price above = bullish bias, below = bearish.
// - Use sweeps or MA trend for entries around VWAP.
// - For 24/7 markets, set Session to 0000-2359.



//@version=6
indicator("Capital41 Session VWAP v2", overlay = true, max_lines_count = 50)

// Inputs
useExchangeTz = input.bool(false, "Use exchange timezone")
sessTz        = input.string("America/New_York", "Session timezone",
                             options = ["America/New_York", "America/Chicago", "Etc/UTC", "Europe/London", "Asia/Tokyo"])
sessTimes     = input.session("0930-1600", "Session times")

showVwap      = input.bool(true, "Show VWAP")
showBands     = input.bool(false, "Show 1σ bands")
bandMult      = input.float(1.0, "Band multiplier", minval = 0.1, maxval = 3.0)
showOnlySession = input.bool(true, "Plot only during session")
showBadge     = input.bool(true, "Show status badge")

colorVwap = color.new(color.blue, 0)
colorBand = color.new(color.blue, 70)
colorBull = color.new(color.lime, 0)
colorBear = color.new(color.red, 0)


// Session detection
inSession = useExchangeTz ? not na(time(timeframe.period, sessTimes)) : not na(time(timeframe.period, sessTimes, sessTz))
newSession = inSession and not inSession[1]


// Session VWAP (manual)
var float cumPV = 0.0
var float cumV  = 0.0
var float cumP2V = 0.0

if newSession
    cumPV := 0.0
    cumV := 0.0
    cumP2V := 0.0

if inSession
    tp = hlc3
    cumPV += tp * volume
    cumV  += volume
    cumP2V += tp * tp * volume

vwap = cumV > 0 ? cumPV / cumV : na
variance = cumV > 0 ? (cumP2V / cumV) - (vwap * vwap) : na
stdev = variance > 0 ? math.sqrt(variance) : 0.0

// Raw band levels, kept independent of display toggles so alerts still work
// when the bands are hidden
vwapUpper = vwap + stdev * bandMult
vwapLower = vwap - stdev * bandMult

visible  = not showOnlySession or inSession
vwapPlot = showVwap and visible ? vwap : na
upper = showBands and visible ? vwapUpper : na
lower = showBands and visible ? vwapLower : na

plot(vwapPlot, title = "Session VWAP", color = colorVwap, linewidth = 2)
plot(upper, title = "VWAP Upper", color = colorBand, linewidth = 1)
plot(lower, title = "VWAP Lower", color = colorBand, linewidth = 1)


// Status badge
var table status = table.new(position.top_right, 3, 1, border_width = 1)
if barstate.islast
    if showBadge and not na(vwap)
        dist    = vwap != 0 ? (close - vwap) / vwap * 100 : 0
        above   = close > vwap
        posText = above ? " ABOVE " : " BELOW "
        posBg   = above ? color.new(colorBull, 65) : color.new(colorBear, 65)

        table.cell(status, 0, 0, " VWAP " + str.tostring(vwap, format.mintick) + " ",
                   bgcolor = color.new(colorVwap, 70), text_color = color.white, text_size = size.tiny)
        table.cell(status, 1, 0, " " + str.tostring(dist, "#.##") + "% ",
                   bgcolor = above ? color.new(colorBull, 70) : color.new(colorBear, 70),
                   text_color = color.white, text_size = size.tiny)
        table.cell(status, 2, 0, posText, bgcolor = posBg,
                   text_color = color.white, text_size = size.tiny)
    else
        for i = 0 to 2
            table.cell(status, i, 0, "", bgcolor = color.new(color.black, 100), text_color = color.new(color.black, 100))


// Alerts (crosses hoisted so ta.* runs every bar, then confirmed on bar close)
vwapCrossUp   = ta.crossover(close, vwap)
vwapCrossDown = ta.crossunder(close, vwap)
upperCross    = ta.crossover(close, vwapUpper)
lowerCross    = ta.crossunder(close, vwapLower)

alertcondition(vwapCrossUp and barstate.isconfirmed, title = "VWAP Cross Up",
               message = "Session VWAP: price closed above VWAP on {{ticker}} ({{interval}})")

alertcondition(vwapCrossDown and barstate.isconfirmed, title = "VWAP Cross Down",
               message = "Session VWAP: price closed below VWAP on {{ticker}} ({{interval}})")

alertcondition(upperCross and barstate.isconfirmed, title = "VWAP Upper Band Cross",
               message = "Session VWAP: price closed above the upper band on {{ticker}} ({{interval}})")

alertcondition(lowerCross and barstate.isconfirmed, title = "VWAP Lower Band Cross",
               message = "Session VWAP: price closed below the lower band on {{ticker}} ({{interval}})")