tildefriends/apps/wiki/handler.js

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import * as utils from './utils.js';
import * as commonmark from './commonmark.min.js';
function markdown(md) {
let reader = new commonmark.Parser({safe: true});
let writer = new commonmark.HtmlRenderer();
let parsed = reader.parse(md || '');
let walker = parsed.walker();
let event;
while ((event = walker.next())) {
let node = event.node;
if (event.entering) {
if (node.destination?.startsWith('&')) {
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node.destination =
'/' + node.destination + '/view?filename=' + node.firstChild?.literal;
} else if (node.type === 'link') {
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if (
node.destination.indexOf(':') == -1 &&
node.destination.indexOf('/') == -1
) {
node.destination = `${node.destination}`;
}
}
}
}
return writer.render(parsed);
}
async function main() {
let slash = request.path.indexOf('/');
if (slash != -1) {
let wiki_name = request.path.substring(0, slash);
let wiki_doc_name = request.path.substring(slash + 1);
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let ids = Object.keys(
await ssb.following(await ssb.getOwnerIdentities(), 1)
);
let [max_row_id, wikis] = await utils.collection(ids, 'wiki', null, -1, {});
let wiki;
for (let w of Object.values(wikis)) {
if (w.name === wiki_name && !w.tombstone) {
wiki = w;
break;
}
}
let wiki_doc;
if (wiki) {
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let [max_row_id, wiki_docs] = await utils.collection(
ids,
'wiki-doc',
wiki.id,
-1,
{}
);
for (let w of Object.values(wiki_docs)) {
if (w.name === wiki_doc_name && !w.tombstone) {
wiki_doc = w;
break;
}
}
}
let md;
if (wiki_doc?.blob) {
md = utf8Decode(await ssb.blobGet(wiki_doc.blob));
}
await respond({
data: `
<h1>${wiki_name}: ${wiki_doc_name}</h1>
<div>${markdown(md)}</div>
`,
content_type: 'text/html; charset=utf-8',
status_code: 200,
});
} else {
await respond({
data: '<h1>File not found</h1>',
content_type: 'text/html',
status_code: 404,
});
}
}
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main();