alpha release

update v0.8.0

src/middlewares/queryHandler/twtHandler.ts

@@ -0,0 +1,101 @@
+import type { Request, Response } from 'express';
+import type { Metadata, Twt } from 'twtxt-lib';
+
+import {
+	generateEtag,
+	getQueryParameterArray,
+	getValueOrFirstEntry,
+} from '../../lib/utils.js';
+import dayjs from 'dayjs';
+import utc from 'dayjs/plugin/utc.js';
+import NodeCache from '@cacheable/node-cache';
+import { QueryParameters } from '../../types.js';
+
+dayjs.extend(utc);
+
+/**
+ *
+ * @param req
+ * @param res
+ * @param twts
+ * @param twtParameter
+ * @param twtsParameter
+ * @returns
+ */
+export default function twtHandler(
+	req: Request,
+	res: Response,
+	twts: Twt[] = [],
+	twtParameter: QueryParameters['twt'],
+	twtsParameter: QueryParameters['twts']
+) {
+	const twtsToMatch = getQueryParameterArray(req.query[twtsParameter]);
+	const showLastTwt = getQueryParameterArray(req.query[twtParameter]);
+	const hashesToMatch = getQueryParameterArray(req.query.hash);
+	const searchTermsToMatch = [
+		...getQueryParameterArray(req.query.search),
+		...getQueryParameterArray(req.query.s),
+	];
+
+	const createdDatesToMatch = getQueryParameterArray(req.query.created_date);
+	const createdUTCStartDatesToMatch = getQueryParameterArray(
+		req.query.created_date_start
+	).map((val) => dayjs.utc(val));
+	const createdUTCEndDatesToMatch = getQueryParameterArray(
+		req.query.created_date_end
+	).map((val) => dayjs.utc(val));
+
+	const wantsJson =
+		req.is('json') ||
+		getValueOrFirstEntry(getQueryParameterArray(req.query.format)) === 'json';
+	if (wantsJson) res.set('content-type', 'application/json');
+	else res.set('content-type', 'text/plain');
+
+	if (showLastTwt.length === 1 && showLastTwt[0] === '') {
+		const lastTwt = twts.reduce((matched, curr) =>
+			matched?.createdUTC > curr.createdUTC ? matched : curr
+		);
+		let result = 'No results';
+
+		if (lastTwt) {
+			result = wantsJson
+				? JSON.stringify(lastTwt)
+				: `${lastTwt?.created || ''}\t${lastTwt?.content || ''}\n`;
+		}
+
+		res.set('etag', generateEtag(result)).send(result);
+		return;
+	}
+
+	const matchedTwts = twts.filter(({ content, created, createdUTC, hash }) => {
+		return (
+			(!twtsToMatch.length ||
+				(twtsToMatch.length === 1 && twtsToMatch[0] === '') ||
+				twtsToMatch.includes(created) ||
+				(hash &&
+					(twtsToMatch.includes(hash) || twtsToMatch.includes(`#${hash}`)))) &&
+			(!hashesToMatch.length ||
+				(hash &&
+					(hashesToMatch.includes(hash) ||
+						hashesToMatch.includes(`#${hash}`)))) &&
+			(!createdDatesToMatch.length ||
+				createdDatesToMatch.some((date) => created.includes(date))) &&
+			(!createdUTCStartDatesToMatch.length ||
+				createdUTCStartDatesToMatch.some(
+					(date) => date.diff(createdUTC) < 0
+				)) &&
+			(!createdUTCEndDatesToMatch.length ||
+				createdUTCEndDatesToMatch.some((date) => date.diff(createdUTC) > 0)) &&
+			(!searchTermsToMatch.length ||
+				searchTermsToMatch.some((term) => content.includes(term)))
+		);
+	});
+
+	const result = wantsJson
+		? JSON.stringify(matchedTwts)
+		: matchedTwts
+				.map(({ content, created }) => `${created}\t${content}`)
+				.join('\n');
+
+	res.set('etag', generateEtag(result)).send(result);
+}