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Display liquidation prices on chart #140

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Display liquidation prices on chart #140

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10 changes: 7 additions & 3 deletions src/components/modals/Settings.svelte
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@
import LabelValue from '@components/layout/LabelValue.svelte'
import Checkbox from '@components/layout/Checkbox.svelte'

import { showOrdersOnChart, showPositionsOnChart, showTooltips } from '@lib/stores'
import { showOrdersOnChart, showPositionsOnChart, showLiquidationPricesOnChart, showTooltips } from '@lib/stores'
import { showToast } from '@lib/ui'
import { saveUserSetting } from '@lib/utils'

Expand All @@ -13,14 +13,15 @@
showToast('Settings reset.');
}

function saveSettings(soc, spc, st) {
function saveSettings(soc, spc, slp, st) {
// console.log('saveSettings', soc, spc, st);
saveUserSetting('showOrdersOnChart', soc);
saveUserSetting('showPositionsOnChart', spc);
saveUserSetting('showLiquidationPricesOnChart', slp);
saveUserSetting('showTooltips', st);
}

$: saveSettings($showOrdersOnChart, $showPositionsOnChart, $showTooltips);
$: saveSettings($showOrdersOnChart, $showPositionsOnChart, $showLiquidationPricesOnChart, $showTooltips);

</script>

Expand All @@ -37,6 +38,9 @@
</div>
<div class='row'>
<Checkbox hasPadding={true} label='Positions on chart' bind:value={$showPositionsOnChart} />
</div>
<div class='row'>
<Checkbox hasPadding={true} label='Liq. prices on chart' bind:value={$showLiquidationPricesOnChart} />
</div><!--
<div class='row'>
<Checkbox hasPadding={true} label='Tooltips' bind:value={$showTooltips} />
Expand Down
80 changes: 67 additions & 13 deletions src/lib/chart.js
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Original file line number Diff line number Diff line change
@@ -1,9 +1,9 @@
import { get } from 'svelte/store'
import { createChart, ColorType, LineStyle } from 'lightweight-charts'

import { CURRENCY_DECIMALS } from './config'
import { BPS_DIVIDER } from './config'
import { formatUnits, formatOrder, formatPosition, formatForDisplay, formatPriceForDisplay } from './formatters'
import { selectedMarket, orders, positions, chartResolution, chartLoading, showOrdersOnChart, showPositionsOnChart, hoveredOHLC } from './stores'
import { selectedMarket, orders, positions, chartResolution, chartLoading, showOrdersOnChart, showPositionsOnChart, showLiquidationPricesOnChart, hoveredOHLC, marketInfos, fundingTrackers } from './stores'
import { saveUserSetting, getPrecision } from './utils'

import { getMarketCandles } from '@api/prices'
Expand Down Expand Up @@ -142,6 +142,15 @@ export function initChart(cb) {
showPositionsOnChart.subscribe(() => {
loadPositionLines();
});
showLiquidationPricesOnChart.subscribe(() => {
loadPositionLines();
});
marketInfos.subscribe(() => {
loadPositionLines();
});
fundingTrackers.subscribe(() => {
loadPositionLines();
});

chart.subscribeCrosshairMove(param => {
if (!param?.seriesPrices || param?.seriesPrices.size == 0) {
Expand Down Expand Up @@ -361,6 +370,33 @@ function loadOrderLines(_orders) {

}

function getPositionFunding(_position) {
const fundingTracker = get(fundingTrackers)[_position.asset]?.[_position.market];
if (!fundingTracker) return 0;

let fundingTrackerDiff = formatUnits(fundingTracker) * 1 - formatUnits(_position.fundingTracker) * 1;
if (_position.isLong) fundingTrackerDiff *= -1;

return _position.size * fundingTrackerDiff / BPS_DIVIDER || 0;
}

function getLiquidationPrice(_position) {
const marketInfo = get(marketInfos)[_position.market];
if (!marketInfo || !_position.size) return;

const liqThreshold = marketInfo.liqThreshold / BPS_DIVIDER;
const funding = getPositionFunding(_position);
let liqPrice;

if (_position.isLong) {
liqPrice = _position.price * 1 - liqThreshold * (_position.margin * 1 + funding * 1) * _position.price / _position.size;
} else {
liqPrice = _position.price * 1 + liqThreshold * (_position.margin * 1 + funding * 1) * _position.price / _position.size;
}

return liqPrice;
}

function loadPositionLines(_positions) {

if (!_positions) _positions = get(positions);
Expand All @@ -375,7 +411,7 @@ function loadPositionLines(_positions) {
clearPositionLines();


if (!get(showPositionsOnChart)) return;
if (!get(showPositionsOnChart) && !get(showLiquidationPricesOnChart)) return;

let markers = [];

Expand All @@ -385,16 +421,34 @@ function loadPositionLines(_positions) {

if (_position.market != get(selectedMarket)) continue;

positionLines.push(
candlestickSeries.createPriceLine({
price: _position.price,
color: _position.isLong ? '#00D604' : '#FF5000',
lineWidth: 1,
lineStyle: LineStyle.Solid,
axisLabelVisible: true,
title: `${_position.isLong ? '▲' : '▼'} ${formatForDisplay(_position.size)} ${_position.asset}`,
})
);
if (get(showPositionsOnChart)) {
positionLines.push(
candlestickSeries.createPriceLine({
price: _position.price,
color: _position.isLong ? '#00D604' : '#FF5000',
lineWidth: 1,
lineStyle: LineStyle.Solid,
axisLabelVisible: true,
title: `${_position.isLong ? '▲' : '▼'} ${formatForDisplay(_position.size)} ${_position.asset}`,
})
);
}

if (get(showLiquidationPricesOnChart)) {
const liquidationPrice = getLiquidationPrice(_position);
if (!isNaN(liquidationPrice * 1) && liquidationPrice * 1 > 0) {
positionLines.push(
candlestickSeries.createPriceLine({
price: liquidationPrice,
color: '#FFB020',
lineWidth: 1,
lineStyle: LineStyle.Dashed,
axisLabelVisible: true,
title: `Liq. ${_position.isLong ? '▲' : '▼'} ${formatForDisplay(_position.size)} ${_position.asset}`,
})
);
}
}

// markers.push({
// time: _position.timestamp.toNumber(),
Expand Down
1 change: 1 addition & 0 deletions src/lib/stores.js
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,7 @@ export const activeError = writable();
export const showMobileNav = writable(false);
export const showOrdersOnChart = writable(getUserSetting('showOrdersOnChart') == undefined ? true : getUserSetting('showOrdersOnChart'));
export const showPositionsOnChart = writable(getUserSetting('showPositionsOnChart') == undefined ? true : getUserSetting('showPositionsOnChart'));
export const showLiquidationPricesOnChart = writable(getUserSetting('showLiquidationPricesOnChart') == undefined ? false : getUserSetting('showLiquidationPricesOnChart'));
export const showTooltips = writable(getUserSetting('showTooltips') == undefined ? true : getUserSetting('showTooltips'));

// Contracts
Expand Down