Kazuma
77 lines
2.4 KiB
TypeScript
77 lines
2.4 KiB
TypeScript
import { DatabaseConnection } from '../shared/db/index';
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import { QueryBuilder } from '../shared/utils/QueryBuilder';
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import type { NewsArticleRow } from '../shared/types';
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/**
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* Persistence for the free-tier news pipeline (FREE-DATA-STACK §3).
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* Pure data access — all filtering/dedupe decisions live in NewsPipeline.
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*/
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export class NewsRepository {
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constructor(private readonly db: DatabaseConnection) {}
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/** Returns true if the row was inserted (false = duplicate url_hash). */
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insertArticle(a: {
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urlHash: string;
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titleHash: string;
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tickers: string[];
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headline: string;
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body: string | null;
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source: string;
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catalyst: string | null;
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url: string;
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publishedAt: string;
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}): boolean {
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const qb = new QueryBuilder('NEWS_QUERIES.INSERT_ARTICLE', [
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a.urlHash,
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a.titleHash,
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JSON.stringify(a.tickers),
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a.headline,
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a.body,
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a.source,
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a.catalyst,
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a.url,
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a.publishedAt,
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new Date().toISOString(),
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]);
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return this.db.run(qb) > 0;
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}
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titleSeenSince(titleHash: string, sinceIso: string): boolean {
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const qb = new QueryBuilder('NEWS_QUERIES.TITLE_SEEN_SINCE', [titleHash, sinceIso]);
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return this.db.get(qb) != null;
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}
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linkTicker(ticker: string, day: string, urlHash: string): void {
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const qb = new QueryBuilder('NEWS_QUERIES.INSERT_CATALYST_LINK', [ticker, day, urlHash]);
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this.db.run(qb);
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}
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countTickerDay(ticker: string, day: string): number {
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const qb = new QueryBuilder('NEWS_QUERIES.COUNT_TICKER_DAY', [ticker, day]);
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return this.db.get<{ n: number }>(qb)?.n ?? 0;
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}
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newsForTicker(ticker: string, sinceDay: string): NewsArticleRow[] {
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const qb = new QueryBuilder('NEWS_QUERIES.SELECT_TICKER_NEWS', [
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ticker.toUpperCase(),
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sinceDay,
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]);
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return this.db.all<NewsArticleRow>(qb);
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}
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recent(limit: number): NewsArticleRow[] {
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const qb = new QueryBuilder('NEWS_QUERIES.SELECT_RECENT', [limit]);
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return this.db.all<NewsArticleRow>(qb);
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}
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/** Retention: null out bodies older than cutoff. Returns rows changed. */
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purgeBodiesBefore(cutoffIso: string): number {
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return this.db.run(new QueryBuilder('NEWS_QUERIES.PURGE_BODIES_BEFORE', [cutoffIso]));
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}
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/** Retention: delete old rows no ticker references. Returns rows deleted. */
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deleteUnreferencedBefore(cutoffIso: string): number {
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return this.db.run(new QueryBuilder('NEWS_QUERIES.DELETE_UNREFERENCED_BEFORE', [cutoffIso]));
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}
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}
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