Ichimoku Cloud Breakout

//@version=6
// Ichimoku Cloud Breakout — sort.finance. Fills at the signal bar's close, 0.02% fee a side,
// whole account per trade, as the backtest. History and indicator warm-up
// differ from the site's, so expect close to the same trades, not identical.
strategy("Ichimoku Cloud Breakout", overlay=true,
     initial_capital=100, default_qty_type=strategy.percent_of_equity,
     default_qty_value=100, commission_type=strategy.commission.percent,
     commission_value=0.02, process_orders_on_close=true, pyramiding=0)

// The bar the current position opened on, and the bar the last one closed on.
var int entryBar = na
var int exitBar = -1

// ── Signals ──────────────────────────────────────────────────────────────
midpoint(len) => (ta.highest(high, len) + ta.lowest(low, len)) / 2
conversion = midpoint(9)
base = midpoint(26)
// The cloud at this bar is the one drawn 26 bars ago.
spanA = ((conversion + base) / 2)[26]
spanB = midpoint(52)[26]
cloudTop = math.max(spanA, spanB)
cloudBottom = math.min(spanA, spanB)
enterNow = close[1] <= cloudTop[1] and close > cloudTop
exitNow = close[1] >= cloudBottom[1] and close < cloudBottom

// ── Orders ───────────────────────────────────────────────────────────────
// Open on the first bar the entry holds while flat; close on the first
// later bar the exit holds; never reopen on the bar a position closed.
inTrade = strategy.position_size != 0
if inTrade and bar_index > entryBar and exitNow
    strategy.close("Long")
    exitBar := bar_index
else if not inTrade and bar_index > exitBar and enterNow
    strategy.entry("Long", strategy.long)
    entryBar := bar_index

// ── Drawing ──────────────────────────────────────────────────────────────
plot(conversion, "Conversion", color=#4d8dff)
plot(base, "Base", color=#e0a03a)
plot(spanA, "Span A", color=#459b61)
plot(spanB, "Span B", color=#b54a48)