chore: add AGENTS.md with build, lint, test commands and style guidelines
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DiTus
231
js/ui/signal-markers.js
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231
js/ui/signal-markers.js
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import { IndicatorRegistry } from '../indicators/index.js';
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export function calculateSignalMarkers(candles) {
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const activeIndicators = window.getActiveIndicators?.() || [];
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const markers = [];
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if (!candles || candles.length < 2) {
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return markers;
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}
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for (const indicator of activeIndicators) {
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if (indicator.params.showMarkers === false || indicator.params.showMarkers === 'false') {
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continue;
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}
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console.log('[SignalMarkers] Processing indicator:', indicator.type, 'showMarkers:', indicator.params.showMarkers);
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// Use cache if available
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let results = indicator.cachedResults;
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if (!results || !Array.isArray(results) || results.length !== candles.length) {
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const IndicatorClass = IndicatorRegistry[indicator.type];
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if (!IndicatorClass) {
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continue;
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}
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const instance = new IndicatorClass(indicator);
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results = instance.calculate(candles);
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}
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if (!results || !Array.isArray(results) || results.length === 0) {
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continue;
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}
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const indicatorMarkers = findCrossoverMarkers(indicator, candles, results);
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markers.push(...indicatorMarkers);
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}
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markers.sort((a, b) => a.time - b.time);
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return markers;
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}
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function findCrossoverMarkers(indicator, candles, results) {
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const markers = [];
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const overbought = indicator.params?.overbought || 70;
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const oversold = indicator.params?.oversold || 30;
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const indicatorType = indicator.type;
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const buyColor = indicator.params?.markerBuyColor || '#26a69a';
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const sellColor = indicator.params?.markerSellColor || '#ef5350';
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const buyShape = indicator.params?.markerBuyShape || 'arrowUp';
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const sellShape = indicator.params?.markerSellShape || 'arrowDown';
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const buyCustom = indicator.params?.markerBuyCustom || '◭';
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const sellCustom = indicator.params?.markerSellCustom || '▼';
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for (let i = 1; i < results.length; i++) {
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const candle = candles[i];
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const prevCandle = candles[i - 1];
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const result = results[i];
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const prevResult = results[i - 1];
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if (!result || !prevResult) continue;
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if (indicatorType === 'rsi' || indicatorType === 'stoch') {
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const rsi = result.rsi ?? result;
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const prevRsi = prevResult.rsi ?? prevResult;
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if (rsi === undefined || prevRsi === undefined) continue;
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if (prevRsi > overbought && rsi <= overbought) {
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markers.push({
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time: candle.time,
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position: 'aboveBar',
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color: sellColor,
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shape: sellShape === 'custom' ? '' : sellShape,
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text: sellShape === 'custom' ? sellCustom : ''
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});
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}
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if (prevRsi < oversold && rsi >= oversold) {
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markers.push({
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time: candle.time,
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position: 'belowBar',
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color: buyColor,
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shape: buyShape === 'custom' ? '' : buyShape,
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text: buyShape === 'custom' ? buyCustom : ''
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});
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}
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} else if (indicatorType === 'macd') {
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const macd = result.macd ?? result.MACD;
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const signal = result.signal ?? result.signalLine;
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const prevMacd = prevResult.macd ?? prevResult.MACD;
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const prevSignal = prevResult.signal ?? prevResult.signalLine;
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if (macd === undefined || signal === undefined || prevMacd === undefined || prevSignal === undefined) continue;
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const macdAbovePrev = prevMacd > prevSignal;
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const macdAboveNow = macd > signal;
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if (macdAbovePrev && !macdAboveNow) {
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markers.push({
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time: candle.time,
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position: 'aboveBar',
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color: sellColor,
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shape: sellShape === 'custom' ? '' : sellShape,
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text: sellShape === 'custom' ? sellCustom : ''
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});
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}
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if (!macdAbovePrev && macdAboveNow) {
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markers.push({
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time: candle.time,
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position: 'belowBar',
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color: buyColor,
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shape: buyShape === 'custom' ? '' : buyShape,
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text: buyShape === 'custom' ? buyCustom : ''
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});
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}
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} else if (indicatorType === 'bb') {
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const upper = result.upper ?? result.upperBand;
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const lower = result.lower ?? result.lowerBand;
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if (upper === undefined || lower === undefined) continue;
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const priceAboveUpperPrev = prevCandle.close > (prevResult.upper ?? prevResult.upperBand);
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const priceAboveUpperNow = candle.close > upper;
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if (priceAboveUpperPrev && !priceAboveUpperNow) {
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markers.push({
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time: candle.time,
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position: 'aboveBar',
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color: sellColor,
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shape: sellShape === 'custom' ? '' : sellShape,
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text: sellShape === 'custom' ? sellCustom : ''
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});
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}
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if (!priceAboveUpperPrev && priceAboveUpperNow) {
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markers.push({
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time: candle.time,
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position: 'belowBar',
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color: buyColor,
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shape: buyShape === 'custom' ? '' : buyShape,
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text: buyShape === 'custom' ? buyCustom : ''
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});
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}
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const priceBelowLowerPrev = prevCandle.close < (prevResult.lower ?? prevResult.lowerBand);
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const priceBelowLowerNow = candle.close < lower;
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if (priceBelowLowerPrev && !priceBelowLowerNow) {
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markers.push({
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time: candle.time,
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position: 'belowBar',
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color: buyColor,
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shape: buyShape === 'custom' ? '' : buyShape,
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text: buyShape === 'custom' ? buyCustom : ''
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});
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}
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if (!priceBelowLowerPrev && priceBelowLowerNow) {
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markers.push({
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time: candle.time,
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position: 'aboveBar',
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color: sellColor,
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shape: sellShape === 'custom' ? '' : sellShape,
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text: sellShape === 'custom' ? sellCustom : ''
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});
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}
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} else if (indicatorType === 'hurst') {
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const upper = result.upper;
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const lower = result.lower;
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const prevUpper = prevResult?.upper;
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const prevLower = prevResult?.lower;
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if (upper === undefined || lower === undefined ||
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prevUpper === undefined || prevLower === undefined) continue;
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// BUY: price crosses down below lower band (was above, now below)
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if (prevCandle.close > prevLower && candle.close < lower) {
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markers.push({
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time: candle.time,
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position: 'belowBar',
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color: buyColor,
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shape: buyShape === 'custom' ? '' : buyShape,
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text: buyShape === 'custom' ? buyCustom : ''
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});
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}
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// SELL: price crosses down below upper band (was above, now below)
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if (prevCandle.close > prevUpper && candle.close < upper) {
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markers.push({
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time: candle.time,
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position: 'aboveBar',
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color: sellColor,
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shape: sellShape === 'custom' ? '' : sellShape,
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text: sellShape === 'custom' ? sellCustom : ''
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});
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}
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} else {
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const ma = result.ma ?? result;
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const prevMa = prevResult.ma ?? prevResult;
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if (ma === undefined || prevMa === undefined) continue;
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const priceAbovePrev = prevCandle.close > prevMa;
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const priceAboveNow = candle.close > ma;
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if (priceAbovePrev && !priceAboveNow) {
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markers.push({
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time: candle.time,
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position: 'aboveBar',
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color: sellColor,
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shape: sellShape === 'custom' ? '' : sellShape,
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text: sellShape === 'custom' ? sellCustom : ''
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});
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}
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if (!priceAbovePrev && priceAboveNow) {
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markers.push({
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time: candle.time,
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position: 'belowBar',
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color: buyColor,
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shape: buyShape === 'custom' ? '' : buyShape,
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text: buyShape === 'custom' ? buyCustom : ''
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});
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}
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}
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}
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return markers;
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}
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