feat: Truth-Social-RSS-Parser + Coin-Keyword-Matching

src/server/signals/truth.ts

@@ -0,0 +1,41 @@
+import { COIN_KEYWORDS } from './watchlist';
+
+export interface TruthPost {
+  url: string;
+  ts: number; // Unix ms
+  text: string;
+}
+
+const esc = (s: string) => s.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
+
+/** RSS-Items per Regex (kein XML-Parser nötig — Feed ist flach und stabil). */
+export function parseTruthFeed(xml: string): TruthPost[] {
+  const posts: TruthPost[] = [];
+  for (const item of xml.match(/<item>[\s\S]*?<\/item>/g) ?? []) {
+    const url = item.match(/<link>([^<]+)<\/link>/)?.[1]?.trim();
+    const pubDate = item.match(/<pubDate>([^<]+)<\/pubDate>/)?.[1];
+    const descRaw = item.match(/<description>([\s\S]*?)<\/description>/)?.[1] ?? '';
+    if (!url || !pubDate) continue;
+    const ts = Date.parse(pubDate);
+    if (Number.isNaN(ts)) continue;
+    const text = descRaw
+      .replace(/^<!\[CDATA\[|\]\]>$/g, '')
+      .replace(/<[^>]+>/g, ' ')
+      .replace(/&amp;/g, '&').replace(/&lt;/g, '<').replace(/&gt;/g, '>').replace(/&quot;/g, '"').replace(/&#39;/g, "'")
+      .replace(/\s+/g, ' ')
+      .trim();
+    posts.push({ url, ts, text });
+  }
+  return posts;
+}
+
+/** Erwähnte Coins (Symbole, dedupliziert, in COIN_KEYWORDS-Reihenfolge). */
+export function matchCoins(text: string): string[] {
+  const hits: string[] = [];
+  for (const c of COIN_KEYWORDS) {
+    const nameHit = c.names.some((n) => new RegExp(`\\b${esc(n)}\\b`, 'i').test(text));
+    const tickerHit = c.tickers.some((t) => new RegExp(`\\b${esc(t)}\\b`).test(text)); // case-sensitive
+    if (nameHit || tickerHit) hits.push(c.symbol);
+  }
+  return hits;
+}