IPO Day Anchored VWAP

// Copyright 2026 Major Hayden
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//@version=6
indicator('IPO Day Anchored VWAP', shorttitle='IPO VWAP', overlay=true)

// === VWAP SETTINGS ===
grpVWAP = 'VWAP Settings'
vwapSource = input.source(hlc3, 'Source', group=grpVWAP, tooltip='Automatic IPO-day detection is reliable on Daily and higher timeframes only. On intraday charts, enable manual anchor date instead.')

// === MANUAL ANCHOR ===
grpManual = 'Manual Anchor'
useManualAnchor = input.bool(false, 'Use Manual Anchor Date', group=grpManual)
manualAnchorTime = input.time(timestamp('2020-01-01'), 'Anchor Date/Time', group=grpManual)

// === DISPLAY ===
grpDisplay = 'Display'
showIPOLabel = input.bool(true, 'Show IPO Label', group=grpDisplay)

// === ANCHOR LOGIC ===
// Auto mode: anchor on first bar (bar_index == 0)
autoAnchor = bar_index == 0

// Manual mode: latch on first bar where time >= manualAnchorTime
var bool manualAnchorFired = false
manualAnchor = false
if useManualAnchor and not manualAnchorFired and time >= manualAnchorTime
    manualAnchorFired := true
    manualAnchor := true

// Choose active anchor: manual overrides auto
activeAnchor = useManualAnchor ? manualAnchor : autoAnchor

// === VWAP CALCULATION ===
vwapValue = ta.vwap(vwapSource, activeAnchor)

// === PLOTTING ===
// Color/thickness are left as plot() literals so TradingView exposes them
// in the indicator's built-in "Style" tab instead of the "Inputs" tab.
plot(vwapValue, 'VWAP', color=color.aqua, linewidth=2)

// === ANCHOR LABEL ===
if showIPOLabel and activeAnchor
    labelText = useManualAnchor ? 'Anchor' : 'IPO'
    label.new(bar_index, low, labelText, style=label.style_label_up, color=color.red, textcolor=color.white, size=size.small)

// === RIGHT-EDGE LABEL ===
// Small label tracking the current end of the VWAP line, so it's easy to
// spot on busy charts. Created once, repositioned every bar while it's live.
var label vwapEdgeLabel = na
if showIPOLabel
    if na(vwapEdgeLabel)
        vwapEdgeLabel := label.new(bar_index, vwapValue, 'IPO', style=label.style_label_left, color=color.red, textcolor=color.white, size=size.small)
    if barstate.islast
        label.set_xy(vwapEdgeLabel, bar_index + 1, vwapValue)

// === ALERT ===
alertcondition(ta.cross(close, vwapValue), title='Price Crosses VWAP', message='{{ticker}}: Price crossed IPO VWAP')