Indicator Template

// SPDX-License-Identifier: MIT
//@version=6

// ──────────────────────────────────────────────────────────────────────────
// Description: TEMPLATE — replace this with what the indicator does.
// Repainting status: Non-repainting (signals gated on barstate.isconfirmed).
// ──────────────────────────────────────────────────────────────────────────

indicator(title         = "Indicator Name",
          shorttitle    = "Short",
          overlay       = true,
          max_lines_count    = 500,
          max_labels_count   = 500,
          max_boxes_count    = 500,
          max_polylines_count = 100)

// ──────────────────────────────────────────────────────────────────────────
// CONSTANTS
// ──────────────────────────────────────────────────────────────────────────
const color BULL_COLOR = #26a69a
const color BEAR_COLOR = #ef5350
const color NEUTRAL    = color.new(color.gray, 50)

// ──────────────────────────────────────────────────────────────────────────
// INPUTS
// ──────────────────────────────────────────────────────────────────────────
// Calculation
lengthInput   = input.int(14, "Length", minval = 1, maxval = 500,
    group = "Calculation",
    tooltip = "Lookback bars for the main calculation.")
sourceInput   = input.source(close, "Source",
    group = "Calculation")

// Signals
confirmedInput = input.bool(true, "Signal only on bar close",
    group = "Signals",
    tooltip = "When on, signals only fire after the bar closes. Off = live (repainting) signals.")

// Display
showLineInput   = input.bool(true,  "Show line",       group = "Display")
showLabelsInput = input.bool(false, "Show value labels", group = "Display")
bullColorInput  = input.color(BULL_COLOR, "Bull color", group = "Display", inline = "col")
bearColorInput  = input.color(BEAR_COLOR, "Bear color", group = "Display", inline = "col")

// Debug
debugInput = input.bool(false, "Verbose Pine Logs",
    group = "Debug",
    tooltip = "Enables log.info() output. Use the Pine Logs pane to inspect.")

// ──────────────────────────────────────────────────────────────────────────
// FUNCTIONS
// ──────────────────────────────────────────────────────────────────────────
//@function Non-repainting higher-timeframe request.
f_secure(simple string sym, simple string tf, series float expr) =>
    request.security(sym, tf, expr[1], lookahead = barmerge.lookahead_on)

// ──────────────────────────────────────────────────────────────────────────
// CALCULATIONS
// ──────────────────────────────────────────────────────────────────────────
float maValue   = ta.sma(sourceInput, lengthInput)
bool  longSig   = ta.crossover(sourceInput, maValue)  and (not confirmedInput or barstate.isconfirmed)
bool  shortSig  = ta.crossunder(sourceInput, maValue) and (not confirmedInput or barstate.isconfirmed)
color plotColor = sourceInput > maValue ? bullColorInput : bearColorInput

// ──────────────────────────────────────────────────────────────────────────
// VISUALS
// ──────────────────────────────────────────────────────────────────────────
plot(showLineInput ? maValue : na, "MA", plotColor, linewidth = 2)

plotshape(longSig,  "Long",  shape.triangleup,   location.belowbar, bullColorInput, size = size.tiny)
plotshape(shortSig, "Short", shape.triangledown, location.abovebar, bearColorInput, size = size.tiny)

if showLabelsInput and (longSig or shortSig)
    label.new(bar_index, sourceInput,
        text     = str.format("{0,number,#.##}", maValue),
        style    = longSig ? label.style_label_up : label.style_label_down,
        color    = longSig ? bullColorInput : bearColorInput,
        textcolor = color.white,
        size     = size.small)

if debugInput and (longSig or shortSig)
    log.info("Signal bar={0,number,#}: long={1}, short={2}, ma={3,number,#.##}",
        bar_index, longSig, shortSig, maValue)

// ──────────────────────────────────────────────────────────────────────────
// ALERTS
// ──────────────────────────────────────────────────────────────────────────
alertcondition(longSig,  title = "Long signal",
    message = "Long signal on {{ticker}} at {{close}}")
alertcondition(shortSig, title = "Short signal",
    message = "Short signal on {{ticker}} at {{close}}")