Volume indicators

// overlay = true
plot("VWAP", null, { color: "#f59e0bFF", linewidth: 2 });

onBar(() => {
  plot("VWAP", ta.vwap(ctx.close, ctx.volume));
});

// overlay = false
plot("OBV", null, { color: "#22c55eFF" });

onBar(() => {
  plot("OBV", ta.obv(ctx.close, ctx.volume));
});

plot("A/D", null, { color: "#3b82f6FF" });

onBar(() => {
  plot("A/D", ta.accdist(ctx.close, ctx.high, ctx.low, ctx.volume));
});

// overlay = false
hline(80, { color: "#ef4444FF", style: "dashed" });
hline(20, { color: "#22c55eFF", style: "dashed" });
plot("MFI", null, { color: "#a78bfaFF" });

onBar(() => {
  plot("MFI", ta.mfi(ctx.high, ctx.low, ctx.close, ctx.volume, 14));
});

plot("OBV",     null, { color: "#22c55eFF" });
plot("OBV SMA", null, { color: "#22c55e60" });

onBar(() => {
  const obv = ta.obv(ctx.close, ctx.volume);
  const obvSma = ta.sma(() => obv, 20);
  plot("OBV",     obv);
  plot("OBV SMA", obvSma);

  // OBV above its SMA = bullish volume trend
  bgcolor(obv > obvSma ? "#22c55e10" : "#ef444410");
});