Session Highlight [trugurpala]

//@version=6
// Session Highlight — VİOP / BIST30 Seans Vurgulayıcı
// github.com/trugurpala/pinescriptv6 — Author: Ugur Pala
indicator("Session Highlight [trugurpala]", overlay=true)

// ── Inputs ───────────────────────────────────────────────────────────────────
string session1   = input.session("0930-1815", "VİOP Seans / Session")
string timezone1  = input.string("UTC+3",      "Timezone", options=["UTC", "UTC+3", "UTC+2", "America/New_York"])
bool   showLabels = input.bool(true, "Seans Etiketi / Session Label")

// ── Calculations ─────────────────────────────────────────────────────────────
bool inSession = not na(time(timeframe.period, session1, timezone1))
bool sesStart  = inSession and not inSession[1]
bool sesEnd    = not inSession and inSession[1]

// ── Visuals ──────────────────────────────────────────────────────────────────
bgcolor(inSession ? color.new(color.blue, 93) : na, title="Seans")

if showLabels
    if sesStart
        label.new(bar_index, low,  "Açılış / Open",
            style=label.style_label_up,
            color=color.new(color.green, 50), textcolor=color.white, size=size.small)
    if sesEnd
        label.new(bar_index, high, "Kapanış / Close",
            style=label.style_label_down,
            color=color.new(color.red, 50), textcolor=color.white, size=size.small)

// Gün içi yüksek/düşük
var float sesHigh = na
var float sesLow  = na

if sesStart
    sesHigh := high
    sesLow  := low
if inSession
    sesHigh := math.max(sesHigh, high)
    sesLow  := math.min(sesLow,  low)

plot(inSession ? sesHigh : na, "Seans Yüksek", color.new(color.red,   30), linewidth=1, style=plot.style_linebr)
plot(inSession ? sesLow  : na, "Seans Düşük",  color.new(color.green, 30), linewidth=1, style=plot.style_linebr)