Fix performance chart color edge case bug

.env

@@ -31,7 +31,7 @@ TS_PUBLIC_TYPESENSE_API_URL=https://typesense2.tradingstrategy.ai
 TS_PUBLIC_TYPESENSE_API_KEY=npdPPJNELDhdr7v6IS9rQUpFG2VvdyAL
 TS_PUBLIC_DISCORD_URL=https://discord.gg/5M88m9nM8H
 TS_PUBLIC_WALLET_CONNECT_PROJECT_ID=9ee7efad98897eb60ba023db6aa72355
-TS_PUBLIC_STRATEGIES='[{"id":"enzyme-polygon-matic-eth-usdc","name":"ETH-MATIC-USDC momentum","url":"https://enzyme-polygon-matic-eth-usdc.tradingstrategy.ai","frontpage":true},{"id":"enzyme-arbitrum-eth-btc-rsi","name":"ETH-BTC price surge (Arbitrum)","url":"https://enzyme-arbitrum-eth-btc-rsi.tradingstrategy.ai/","frontpage":true},{"id":"enzyme-polygon-eth-rolling-ratio","name":"ETH/BTC rolling ratio","url":"https://enzyme-polygon-eth-rolling-ratio.tradingstrategy.ai/","frontpage":true},{"id":"enzyme-polygon-eth-btc-rsi","name":"ETH-BTC price surge","url":"https://enzyme-polygon-eth-btc-rsi.tradingstrategy.ai/","frontpage":true,"hiddenPositions":[4]},{"id":"enzyme-ethereum-btc-eth-stoch-rsi","name":"Stochastic ETH/BTC long","url":"https://enzyme-ethereum-btc-eth-stoch-rsi.tradingstrategy.ai","frontpage":true},{"id":"enzyme-polygon-eth-btc-usdc","name":"ETH-BTC-USDC momentum","url":"https://enzyme-polygon-eth-btc-usdc.tradingstrategy.ai","new_version_id":"enzyme-polygon-eth-btc-rsi","frontpage":true},{"id":"enzyme-polygon-matic-usdc","name":"MATIC breakout","url":"https://enzyme-polygon-matic-usdc.tradingstrategy.ai"},{"id":"enzyme-polygon-eth-breakout","name":"ETH breakout","url":"https://enzyme-polygon-eth-breakout.tradingstrategy.ai"},{"id":"enzyme-polygon-eth-usdc","name":"ETH Breakout bounce","url":"https://enzyme-polygon-eth-usdc.tradingstrategy.ai"},{"id":"enzyme-polygon-eth-usdc-sls","name":"ETH Balance snap","url":"https://enzyme-polygon-eth-usdc-sls.tradingstrategy.ai"},{"id":"polygon-eth-spot-short","name":"ETH mean reversion bounce","url":"https://polygon-eth-spot-short.tradingstrategy.ai"},{"id":"arbitrum-btc-breakout","name":"BTC Barrier Breach","url":"https://arbitrum-btc-breakout.tradingstrategy.ai"}]'
+TS_PUBLIC_STRATEGIES='[{"id":"enzyme-polygon-matic-eth-usdc","name":"ETH-MATIC-USDC momentum","url":"https://enzyme-polygon-matic-eth-usdc.tradingstrategy.ai","frontpage":true},{"id":"enzyme-arbitrum-eth-btc-rsi","name":"ETH-BTC long swing","url":"https://enzyme-arbitrum-eth-btc-rsi.tradingstrategy.ai/","frontpage":true},{"id":"enzyme-polygon-eth-rolling-ratio","name":"ETH/BTC rolling ratio","url":"https://enzyme-polygon-eth-rolling-ratio.tradingstrategy.ai/","frontpage":true},{"id":"enzyme-ethereum-btc-eth-stoch-rsi","name":"Stochastic ETH-BTC","url":"https://enzyme-ethereum-btc-eth-stoch-rsi.tradingstrategy.ai","frontpage":true},{"id":"enzyme-polygon-matic-usdc","name":"MATIC Level crush","url":"https://enzyme-polygon-matic-usdc.tradingstrategy.ai"},{"id":"enzyme-polygon-eth-breakout","name":"ETH breakout","url":"https://enzyme-polygon-eth-breakout.tradingstrategy.ai"},{"id":"enzyme-polygon-eth-usdc","name":"ETH Breakout bounce","url":"https://enzyme-polygon-eth-usdc.tradingstrategy.ai"},{"id":"enzyme-polygon-eth-usdc-sls","name":"ETH Balance snap","url":"https://enzyme-polygon-eth-usdc-sls.tradingstrategy.ai"},{"id":"polygon-eth-spot-short","name":"ETH Mean Flip","url":"https://polygon-eth-spot-short.tradingstrategy.ai"},{"id":"arbitrum-btc-breakout","name":"BTC Barrier Breach","url":"https://arbitrum-btc-breakout.tradingstrategy.ai"},{"id":"ethereum-memecoin-swing","name":"ETH Memecoin Social Trend Spotter","url":"https://ethereum-memecoin-swing.tradingstrategy.ai"},{"id":"ethereum-memecoin-vol-basket","name":"Memecoin volatility index","url":"https://ethereum-memecoin-vol-basket.tradingstrategy.ai"},{"id":"enzyme-polygon-eth-btc-rsi","name":"ETH-BTC price surge","url":"https://enzyme-polygon-eth-btc-rsi.tradingstrategy.ai/","newVersionId":"enzyme-arbitrum-eth-btc-rsi","hiddenPositions":[4],"frontpage":true},{"id":"enzyme-polygon-eth-btc-usdc","name":"ETH-BTC-USDC momentum","url":"https://enzyme-polygon-eth-btc-usdc.tradingstrategy.ai","newVersionId":"enzyme-polygon-eth-btc-rsi","frontpage":true}]'
 TS_PUBLIC_GEO_BLOCK='{"strategies:view":["CU","IR","KP","RU","SY"],"strategies:deposit":["CU","IR","KP","RU","SY","US","UK"]}'
 # Uncomment to test chain maintenance error
 # TS_PUBLIC_CHAINS_UNDER_MAINTENANCE='{ "binance": "BNB Chain" }'

src/lib/chart/PerformanceChart.svelte

@@ -15,51 +15,57 @@ Display a peformance line chart for a given (static) dataset.
 ```
 -->
 <script lang="ts">
-	import type { Quote, Periodicity } from '$lib/chart';
-	import { createEventDispatcher } from 'svelte';
+	import type { Quote } from '$lib/chart';
 	import { differenceInCalendarDays } from 'date-fns';
 	import { ChartIQ, Marker } from '$lib/chart';
 	import { Timestamp, UpDownCell } from '$lib/components';
 	import { determinePriceChangeClass } from '$lib/helpers/price';
+	import { relativeProfitability } from 'trade-executor/helpers/profit';
 	import { merge } from '$lib/helpers/object';
 
-	export let loading = false;
-	export let data: Quote[] = [];
-	export let options: any = undefined;
-	export let formatValue: Formatter<MaybeNumber>;
-	export let spanDays: MaybeNumber;
-	export let studies: any[] = [];
-	let initCallback: Function | undefined = undefined;
-	export { initCallback as init };
-	export let invalidate: any[] = [];
-
-	const dispatch = createEventDispatcher<{
-		change: {
-			first: Maybe<Quote>;
-			last: Maybe<Quote>;
-			firstTickPosition: number;
-		};
-	}>();
+	type Props = {
+		loading?: boolean;
+		data?: Quote[];
+		options?: object;
+		formatValue: Formatter<MaybeNumber>;
+		spanDays: MaybeNumber;
+		studies?: any[];
+		invalidate?: any[];
+		init?: (arg: any) => () => void;
+		onPeriodPerformanceChange?: (value: MaybeNumber) => void;
+	};
+
+	let {
+		loading = false,
+		data = [],
+		options,
+		formatValue,
+		spanDays,
+		studies = [],
+		invalidate = [],
+		init: initCallback,
+		onPeriodPerformanceChange
+	}: Props = $props();
 
 	let chartWrapper: HTMLElement;
 
-	let viewportWidth: number;
-	$: hideYAxis = viewportWidth <= 576;
+	let viewportWidth = $state() as number;
+	let hideYAxis = $derived(viewportWidth <= 576);
 
-	// if spanDays is not set, assume "max" (full data range)
-	$: if (spanDays === undefined) {
+	// set displayDays to spanDays if set; otherwise max data range
+	let displayDays = $derived.by(() => {
+		if (spanDays) return spanDays;
 		const start = data[0]?.DT;
-		spanDays = start ? differenceInCalendarDays(new Date(), start) : 0;
-	}
-
-	$: periodicity = getPeriodicity(spanDays!);
-
-	function getPeriodicity(days: number): Periodicity {
-		if (days <= 7) return { period: 1, interval: 1, timeUnit: 'hour' };
-		if (days <= 30) return { period: 4, interval: 1, timeUnit: 'hour' };
-		if (days <= 365) return { period: 1, interval: 1, timeUnit: 'day' };
+		return start ? differenceInCalendarDays(new Date(), start) : 0;
+	});
+
+	// dynamically set periodicity based on number of days displayed
+	let periodicity = $derived.by(() => {
+		if (displayDays <= 7) return { period: 1, interval: 1, timeUnit: 'hour' };
+		if (displayDays <= 30) return { period: 4, interval: 1, timeUnit: 'hour' };
+		if (displayDays <= 365) return { period: 1, interval: 1, timeUnit: 'day' };
 		return { period: 7, interval: 1, timeUnit: 'day' };
-	}
+	});
 
 	const defaultOptions = {
 		layout: { chartType: 'mountain' },
@@ -79,19 +85,30 @@ Display a peformance line chart for a given (static) dataset.
 		// update chart colors based on change in value (+/-) for visible data set
 		chartEngine.append('createDataSegment', () => {
 			const dataSegment = chartEngine.getDataSegment();
-			const first = chartEngine.getFirstLastDataRecord(dataSegment, 'Close');
-			const last = chartEngine.getFirstLastDataRecord(dataSegment, 'Close', true);
-			const direction = determinePriceChangeClass(last?.Close - first?.Close);
+			const first = chartEngine.getFirstLastDataRecord(dataSegment, 'Value');
+			const last = chartEngine.getFirstLastDataRecord(dataSegment, 'Value', true);
 			const firstTickPosition = chartEngine.pixelFromTick(0);
 
+			let initialValue = first?.Value;
+
+			// if max timeframe OR first tick is after start of displayed chart window
+			// use initial value of 0 instead of first quote value (since chart data does
+			// not always start at 0)
+			if (!spanDays || firstTickPosition > 0) {
+				initialValue = 0;
+			}
+
+			const direction = determinePriceChangeClass(last?.Value - initialValue);
+			const periodPerformance = relativeProfitability(initialValue, last?.Value);
+
 			// NOTE: setting attribute selector on HTML element rather than declaratively via
 			// Svelte template; needed to prevent race condition / ensure colors update correctly.
 			if (chartWrapper.dataset.direction !== direction) {
 				chartWrapper.dataset.direction = direction;
 				chartEngine.clearStyles();
 			}
 
-			dispatch('change', { first, last, firstTickPosition });
+			onPeriodPerformanceChange?.(periodPerformance);
 		});
 
 		const updateCallback = initCallback?.(chartEngine);
@@ -105,7 +122,7 @@ Display a peformance line chart for a given (static) dataset.
 
 			chartEngine.setSpan({
 				base: 'day',
-				multiplier: spanDays,
+				multiplier: displayDays,
 				goIntoPast: true
 			});
 

src/lib/chart/helpers.ts

@@ -50,7 +50,7 @@ export function isCandleTimeBucket(value: MaybeString): value is CandleTimeBucke
  * @param interval A d3 time interval
  */
 export function normalizeDataForInterval(data: RawTick[], interval: TimeInterval) {
-	return data.reduce((acc, [ts, Value]) => {
+	const normalized = data.reduce((acc, [ts, Value]) => {
 		const date = parseDate(ts);
 		if (!date) return acc;
 		const normalizedDate = interval.floor(date);
@@ -61,6 +61,14 @@ export function normalizeDataForInterval(data: RawTick[], interval: TimeInterval
 		acc.push({ DT: normalizedDate, Value });
 		return acc;
 	}, [] as Quote[]);
+
+	// prepend entry for prior interval (if needed) so starting value doesn't get swallowed
+	if (data[0] && normalized[0] && data[0][1] !== normalized[0].Value) {
+		const priorInterval = interval.offset(normalized[0].DT as Date, -1);
+		normalized.unshift({ DT: priorInterval, Value: data[0][1] });
+	}
+
+	return normalized;
 }
 
 export function rawTicksToQuotes(data: RawTick[]): Quote[] {

src/lib/trade-executor/components/StrategyIcon.svelte

@@ -6,7 +6,7 @@
 	const localIconUrl = `/avatars/${strategy.id}.webp`;
 	const strategyIconUrl = strategy.icon_url?.replace(/^http:/, 'https:');
 	const dataUrl = strategy.connected ? localIconUrl : strategyIconUrl;
-	const outdated = Boolean(strategy.new_version_id);
+	const outdated = Boolean(strategy.newVersionId);
 </script>
 
 <div class="strategy-icon" class:outdated>

src/lib/trade-executor/schemas/configuration.ts

@@ -6,7 +6,7 @@ export const strategyConfigurationSchema = z.object({
 	id: z.string(),
 	name: z.string(),
 	url: z.string().url(),
-	new_version_id: z.string().optional(),
+	newVersionId: z.string().optional(),
 	hiddenPositions: primaryKey.array().default([]),
 	frontpage: z.boolean().default(false),
 	microsite: z.boolean().default(false),

src/lib/wallet/MyDeposits.svelte

@@ -39,7 +39,7 @@
 		contracts.fund_value_calculator
 	].every(Boolean);
 
-	const isOutdated = Boolean(strategy.new_version_id);
+	const isOutdated = Boolean(strategy.newVersionId);
 
 	$: connected = $wallet.isConnected;
 	$: wrongNetwork = connected && $wallet.chain?.id !== chain.id;

src/routes/strategies/StrategyTile.svelte

@@ -78,7 +78,7 @@
 					<DataBadge status="success">live</DataBadge>
 				{/if}
 
-				{#if isNew && !strategy.new_version_id}
+				{#if isNew && !strategy.newVersionId}
 					<DataBadge status="success">new</DataBadge>
 				{/if}
 
@@ -88,12 +88,12 @@
 					{/each}
 				{/if}
 
-				{#if !simplified && strategy.new_version_id}
+				{#if !simplified && strategy.newVersionId}
 					<Tooltip>
 						<DataBadge slot="trigger" status="error">Outdated</DataBadge>
 						<svelte:fragment slot="popup">
 							This is an outdated strategy. An updated version is available
-							<a href="/strategies/{strategy.new_version_id}">here</a>.
+							<a href="/strategies/{strategy.newVersionId}">here</a>.
 						</svelte:fragment>
 					</Tooltip>
 				{/if}

src/routes/strategies/[strategy]/+layout.svelte

@@ -20,7 +20,7 @@
 	$: isPrivate = !strategy.tags.includes('live');
 	$: isOverviewPage = $page.url.pathname.endsWith(strategy.id);
 	$: hasError = shouldDisplayError(strategy, admin);
-	$: isOutdated = Boolean(strategy.new_version_id);
+	$: isOutdated = Boolean(strategy.newVersionId);
 	$: displayWarning = isOverviewPage && (hasError || isOutdated);
 
 	$: breadcrumbs = {
@@ -73,9 +73,9 @@
 					<AlertList status="warning" size="md" let:AlertItem>
 						<AlertItem title="Outdated strategy" displayWhen={isOutdated}>
 							You are viewing an outdated version of this strategy. An updated version is available
-							<a href="/strategies/{strategy.new_version_id}" data-sveltekit-reload>here</a>. To maximize future
-							returns, participants should consider tranfering deposits to the latest version (though there is no
-							guarantee of better performance).
+							<a href="/strategies/{strategy.newVersionId}" data-sveltekit-reload>here</a>. To maximize future returns,
+							participants should consider tranfering deposits to the latest version (though there is no guarantee of
+							better performance).
 						</AlertItem>
 						<AlertItem title="Ongoing execution issues" displayWhen={hasError}>
 							<StrategyError {strategy} />