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git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@4635 ed5197a5-7fde-0310-b194-c3ffbd925b24

apps/wiki/handler.js

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+import * as utils from './utils.js';
+import * as commonmark from './commonmark.min.js';
+
+function markdown(md) {
+	var reader = new commonmark.Parser({safe: true});
+	var writer = new commonmark.HtmlRenderer();
+	var parsed = reader.parse(md || '');
+	let walker = parsed.walker();
+	let event;
+	while ((event = walker.next())) {
+		let node = event.node;
+		if (event.entering) {
+			if (node.type === 'link') {
+				if (node.destination.indexOf(':') == -1 &&
+					node.destination.indexOf('/') == -1) {
+					node.destination = `#${this.wiki?.name}/${node.destination}`;
+				}
+			}
+		}
+	}
+	return writer.render(parsed);
+}
+
+async function main() {
+	let slash = request.path.indexOf('/');
+	if (slash != -1) {
+		let wiki_name = request.path.substring(0, slash);
+		let wiki_doc_name = request.path.substring(slash + 1);
+
+		let ids = Object.keys(await ssb.following(await ssb.getOwnerIdentities(), 1));
+		let [max_row_id, wikis] = await utils.collection(ids, 'wiki', null, -1, {});
+		let wiki;
+		for (let w of Object.values(wikis)) {
+			if (w.name === wiki_name && !w.tombstone) {
+				wiki = w;
+				break;
+			}
+		}
+		let wiki_doc;
+		if (wiki) {
+			let [max_row_id, wiki_docs] = await utils.collection(ids, 'wiki-doc', wiki.id, -1, {});
+			for (let w of Object.values(wiki_docs)) {
+				if (w.name === wiki_doc_name && !w.tombstone) {
+					wiki_doc = w;
+					break;
+				}
+			}
+		}
+
+		let md;
+		if (wiki_doc?.blob) {
+			md = utf8Decode(await ssb.blobGet(wiki_doc.blob));
+		}
+
+		await respond({
+			data: `
+				<h1>${wiki_name}: ${wiki_doc_name}</h1>
+				<pre>${markdown(md)}</pre>
+			`,
+			content_type: 'text/html',
+			status_code: 200,
+		});
+	} else {
+		await respond({
+			data: '<h1>File not found</h1>',
+			content_type: 'text/html',
+			status_code: 404,
+		});
+	}
+}
+main();