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nym21
342
websites/default/scripts/chart.js
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342
websites/default/scripts/chart.js
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// @ts-check
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/**
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* @param {Object} args
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* @param {Colors} args.colors
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* @param {LightweightCharts} args.lightweightCharts
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* @param {Accessor<ChartOption>} args.selected
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* @param {Signals} args.signals
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* @param {Utilities} args.utils
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* @param {WebSockets} args.webSockets
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* @param {Elements} args.elements
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* @param {VecsResources} args.vecsResources
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* @param {VecIdToIndexes} args.vecIdToIndexes
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*/
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export function init({
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colors,
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elements,
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lightweightCharts,
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selected,
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signals,
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utils,
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webSockets,
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vecsResources,
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vecIdToIndexes,
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}) {
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elements.charts.append(utils.dom.createShadow("left"));
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elements.charts.append(utils.dom.createShadow("right"));
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const { headerElement, headingElement } = utils.dom.createHeader({});
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elements.charts.append(headerElement);
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const chart = lightweightCharts.createChartElement({
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parent: elements.charts,
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signals,
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colors,
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id: "charts",
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utils,
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vecsResources,
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elements,
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});
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const index = createIndexSelector({ elements, signals, utils });
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let firstRun = true;
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signals.createEffect(selected, (option) => {
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headingElement.innerHTML = option.title;
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signals.createEffect(index, (index) => {
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const { field: topUnitField, selected: topUnit } =
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utils.dom.createHorizontalChoiceField({
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defaultValue: "USD",
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keyPrefix: "charts",
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key: "unit-0",
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choices: /** @type {const} */ ([
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/** @satisfies {Unit} */ ("USD"),
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/** @satisfies {Unit} */ ("Sats"),
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]),
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signals,
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sorted: true,
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});
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signals.createEffect(topUnit, (topUnit) => {
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const { field: seriesTypeField, selected: topSeriesType } =
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utils.dom.createHorizontalChoiceField({
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defaultValue: "Line",
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keyPrefix: "charts",
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key: "seriestype-0",
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choices: /** @type {const} */ (["Candles", "Line"]),
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signals,
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});
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signals.createEffect(topSeriesType, (topSeriesType) => {
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const bottomUnits = /** @type {readonly Unit[]} */ (
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Object.keys(option.bottom)
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);
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const { field: bottomUnitField, selected: bottomUnit } =
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utils.dom.createHorizontalChoiceField({
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defaultValue: bottomUnits.at(0) || "",
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keyPrefix: "charts",
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key: "unit-1",
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choices: bottomUnits,
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signals,
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sorted: true,
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});
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signals.createEffect(bottomUnit, (bottomUnit) => {
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chart.reset({ owner: signals.getOwner() });
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chart.addFieldsetIfNeeded({
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id: "charts-unit-0",
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paneIndex: 0,
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position: "nw",
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createChild() {
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return topUnitField;
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},
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});
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if (bottomUnits.length) {
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chart.addFieldsetIfNeeded({
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id: "charts-unit-1",
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paneIndex: 1,
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position: "nw",
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createChild() {
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return bottomUnitField;
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},
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});
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}
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chart.addFieldsetIfNeeded({
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id: "charts-seriestype-0",
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paneIndex: 0,
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position: "ne",
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createChild() {
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return seriesTypeField;
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},
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});
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const TIMERANGE_LS_KEY = `chart-timerange-${index}`;
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const from = signals.createSignal(
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/** @type {number | null} */ (null),
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{
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save: {
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...utils.serde.optNumber,
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keyPrefix: TIMERANGE_LS_KEY,
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key: "from",
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serializeParam: firstRun,
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},
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},
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);
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const to = signals.createSignal(
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/** @type {number | null} */ (null),
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{
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save: {
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...utils.serde.optNumber,
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keyPrefix: TIMERANGE_LS_KEY,
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key: "to",
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serializeParam: firstRun,
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},
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},
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);
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chart.create({
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index,
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timeScaleSetCallback: (unknownTimeScaleCallback) => {
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const from_ = from();
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const to_ = to();
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if (from_ !== null && to_ !== null) {
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chart.inner()?.timeScale().setVisibleLogicalRange({
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from: from_,
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to: to_,
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});
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} else {
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unknownTimeScaleCallback();
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}
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},
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});
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switch (topUnit) {
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case "USD": {
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switch (topSeriesType) {
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case "Candles": {
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const candles = chart.addCandlestickSeries({
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vecId: "ohlc",
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name: "Price",
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unit: topUnit,
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});
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break;
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}
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case "Line": {
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const line = chart.addLineSeries({
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vecId: "close",
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name: "Price",
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unit: topUnit,
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color: colors.default,
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options: {
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priceLineVisible: true,
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},
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});
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}
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}
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// signals.createEffect(webSockets.kraken1dCandle.latest, (latest) => {
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// if (!latest) return;
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// const last = /** @type { CandlestickData | undefined} */ (
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// candles.data().at(-1)
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// );
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// if (!last) return;
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// candles?.update({ ...last, close: latest.close });
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// });
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break;
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}
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case "Sats": {
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switch (topSeriesType) {
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case "Candles": {
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const candles = chart.addCandlestickSeries({
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vecId: "ohlc-in-sats",
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name: "Price",
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unit: topUnit,
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inverse: true,
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});
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break;
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}
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case "Line": {
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const line = chart.addLineSeries({
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vecId: "close-in-sats",
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name: "Price",
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unit: topUnit,
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color: colors.default,
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options: {
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priceLineVisible: true,
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},
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});
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}
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}
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break;
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}
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}
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[
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{ blueprints: option.top, paneIndex: 0 },
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{ blueprints: option.bottom, paneIndex: 1 },
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].forEach(({ blueprints, paneIndex }) => {
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const unit = paneIndex ? bottomUnit : topUnit;
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blueprints[unit]?.forEach((blueprint) => {
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const indexes = /** @type {readonly number[]} */ (
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vecIdToIndexes[blueprint.key]
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);
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if (indexes.includes(index)) {
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switch (blueprint.type) {
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case "Baseline": {
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chart.addBaselineSeries({
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vecId: blueprint.key,
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// color: blueprint.color,
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name: blueprint.title,
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unit,
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defaultActive: blueprint.defaultActive,
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paneIndex,
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options: {
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...blueprint.options,
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topLineColor:
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blueprint.color?.() ?? blueprint.colors?.[0](),
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bottomLineColor:
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blueprint.color?.() ?? blueprint.colors?.[1](),
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},
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});
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break;
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}
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case "Candlestick": {
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throw Error("TODO");
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break;
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}
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default:
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chart.addLineSeries({
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vecId: blueprint.key,
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color: blueprint.color,
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name: blueprint.title,
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unit,
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defaultActive: blueprint.defaultActive,
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paneIndex,
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options: blueprint.options,
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});
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}
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}
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});
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});
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chart
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.inner()
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?.timeScale()
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.subscribeVisibleLogicalRangeChange(
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utils.debounce((t) => {
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if (t) {
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from.set(t.from);
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to.set(t.to);
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}
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}),
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);
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firstRun = false;
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});
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});
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});
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});
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});
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}
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/**
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* @param {Object} args
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* @param {Elements} args.elements
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* @param {Signals} args.signals
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* @param {Utilities} args.utils
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*/
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function createIndexSelector({ elements, signals, utils }) {
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const { field, selected } = utils.dom.createHorizontalChoiceField({
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// title: "Index",
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defaultValue: "date",
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keyPrefix: "charts",
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key: "index",
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choices: /**@type {const} */ ([
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"timestamp",
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"date",
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"week",
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// "difficulty epoch",
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"month",
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"quarter",
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"year",
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// "halving epoch",
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"decade",
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]),
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id: "index",
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signals,
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});
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const fieldset = window.document.createElement("fieldset");
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fieldset.append(field);
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fieldset.dataset.size = "sm";
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elements.charts.append(fieldset);
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const index = signals.createMemo(
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/** @returns {ChartableIndex} */ () => {
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switch (selected()) {
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case "timestamp":
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return /** @satisfies {Height} */ (5);
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case "date":
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return /** @satisfies {DateIndex} */ (0);
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case "week":
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return /** @satisfies {WeekIndex} */ (22);
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case "month":
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return /** @satisfies {MonthIndex} */ (7);
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case "quarter":
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return /** @satisfies {QuarterIndex} */ (19);
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case "year":
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return /** @satisfies {YearIndex} */ (23);
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case "decade":
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return /** @satisfies {DecadeIndex} */ (1);
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}
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},
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);
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return index;
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}
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