72 lines
2.7 KiB
JavaScript
72 lines
2.7 KiB
JavaScript
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// 共用 Yahoo Finance cookie/crumb（避免多模組並行請求互相打掛）
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const UA = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124 Safari/537.36';
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let _auth = { cookie: null, crumb: null, at: 0 };
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let _inflight = null;
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let _queue = Promise.resolve();
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export function resetYahooAuth() {
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_auth = { cookie: null, crumb: null, at: 0 };
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}
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export async function yahooAuth(force = false) {
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if (!force && _auth.crumb && Date.now() - _auth.at < 3600e3) return _auth;
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if (_inflight) return _inflight;
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_inflight = (async () => {
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const r1 = await fetch('https://fc.yahoo.com/', { headers: { 'User-Agent': UA } }).catch(() => null);
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const cookie = (r1?.headers.get('set-cookie') || '').split(';')[0] || '';
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const r2 = await fetch('https://query2.finance.yahoo.com/v1/test/getcrumb', {
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headers: { 'User-Agent': UA, Cookie: cookie },
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});
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const crumb = (await r2.text()).trim();
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if (!crumb || crumb.includes('<')) throw new Error('Yahoo crumb');
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_auth = { cookie, crumb, at: Date.now() };
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return _auth;
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})().finally(() => { _inflight = null; });
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return _inflight;
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}
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async function yahooJson(url, retry = true) {
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const { cookie, crumb } = await yahooAuth();
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const sep = url.includes('?') ? '&' : '?';
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const full = `${url}${sep}crumb=${encodeURIComponent(crumb)}`;
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const res = await fetch(full, { headers: { 'User-Agent': UA, Cookie: cookie } });
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if ((res.status === 401 || res.status === 429) && retry) {
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resetYahooAuth();
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await sleep(500);
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await yahooAuth(true);
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return yahooJson(url, false);
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}
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if (!res.ok) throw new Error(`Yahoo HTTP ${res.status}`);
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return res.json();
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}
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function yahooQueued(fn) {
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const run = _queue.then(() => fn());
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_queue = run.catch(() => {});
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return run;
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}
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/** quoteSummary 模組（assetProfile、topHoldings 等）— 序列化避免並行打掛 crumb */
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export async function yahooQuoteSummary(symbol, modules) {
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return yahooQueued(async () => {
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const mod = Array.isArray(modules) ? modules.join(',') : modules;
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const url = `https://query2.finance.yahoo.com/v10/finance/quoteSummary/${encodeURIComponent(symbol)}?modules=${encodeURIComponent(mod)}`;
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const j = await yahooJson(url);
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await sleep(120);
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return j?.quoteSummary?.result?.[0] || null;
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});
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}
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export async function yahooFinanceSearchNews(symbol, count = 12) {
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return yahooQueued(async () => {
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const url = `https://query1.finance.yahoo.com/v1/finance/search?q=${encodeURIComponent(symbol)}&newsCount=${count}"esCount=0`;
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const j = await yahooJson(url);
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await sleep(120);
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return j?.news || [];
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});
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}
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export function sleep(ms) {
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return new Promise(r => setTimeout(r, ms));
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}
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