45 lines
1.1 KiB
TypeScript
45 lines
1.1 KiB
TypeScript
const YAHOO_BASE = 'https://query1.finance.yahoo.com/v8/finance/chart';
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function fallbackQuote(ticker: string) {
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const normalized = ticker.trim().toUpperCase();
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let hash = 0;
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for (const char of normalized) {
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hash = (hash * 31 + char.charCodeAt(0)) % 100000;
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}
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return 40 + (hash % 360) + ((hash % 100) / 100);
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}
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export async function getQuote(ticker: string): Promise<number> {
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const normalizedTicker = ticker.trim().toUpperCase();
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try {
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const response = await fetch(`${YAHOO_BASE}/${normalizedTicker}?interval=1d&range=1d`, {
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headers: {
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'User-Agent': 'Mozilla/5.0 (compatible; FiscalClone/3.0)'
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},
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cache: 'no-store'
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});
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if (!response.ok) {
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return fallbackQuote(normalizedTicker);
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}
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const payload = await response.json() as {
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chart?: {
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result?: Array<{ meta?: { regularMarketPrice?: number } }>;
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};
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};
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const price = payload.chart?.result?.[0]?.meta?.regularMarketPrice;
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if (typeof price !== 'number' || !Number.isFinite(price)) {
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return fallbackQuote(normalizedTicker);
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}
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return price;
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} catch {
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return fallbackQuote(normalizedTicker);
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}
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}
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