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Make blogs semi-navigable.

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git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@4753 ed5197a5-7fde-0310-b194-c3ffbd925b24
This commit is contained in:
Cory McWilliams 2024-01-11 00:33:53 +00:00
parent a0af058f5e
commit 576e58b1e3
3 changed files with 40 additions and 18 deletions
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2
apps/blog.json
View File

@ -1,5 +1,5 @@
{
"type": "tildefriends-app",
"emoji": "🪵",
"previous": "&7Ch5DjIMAEbJm05ofH1U/+wlzn9kr65DChcKKgurE8E=.sha256"
"previous": "&k+K+38dqVUjSDSspsyQhFkZexug/umccp20SSrsUq3o=.sha256"
}

37
apps/blog/blog.js
View File

@ -8,6 +8,39 @@ function escapeAttribute(text) {
return (text ?? '').replaceAll('&', '&amp;').replaceAll('<', '&lt;').replaceAll('>', '&gt;').replaceAll('"', '&quot;').replaceAll("'", '&#39;');
}
export async function get_blog_message(id) {
let message;
await ssb.sqlAsync(
'SELECT author, timestamp, content FROM messages WHERE id = ?',
[id],
function(row) {
let content = JSON.parse(row.content);
message = {
author: row.author,
timestamp: row.timestamp,
blog: content?.blog,
title: content?.title,
};
});
if (message) {
await ssb.sqlAsync(
`
SELECT json_extract(content, '$.name') AS name
FROM messages
WHERE author = ?
AND json_extract(content, '$.type') = 'about'
AND json_extract(content, '$.about') = author
AND name IS NOT NULL
ORDER BY sequence DESC LIMIT 1
`,
[message.author],
function(row) {
message.name = row.name;
});
}
return message;
}
export function markdown(md) {
let reader = new commonmark.Parser({safe: true});
let writer = new commonmark.HtmlRenderer();
@ -20,7 +53,7 @@ export function markdown(md) {
if (node.destination?.startsWith('&')) {
node.destination = '/' + node.destination + '/view?filename=' + node.firstChild?.literal;
} else if (node.destination?.startsWith('@') || node.destination?.startsWith('%')) {
node.destination = '/~core/ssb/#' + node.destination;
node.destination = '/~core/ssb/#' + escape(node.destination);
}
}
}
@ -32,9 +65,11 @@ export async function render_blog_post_html(blog_post) {
return `<!DOCTYPE html>
<html>
<head>
<title>🪵Tilde Friends Blog - ${markdown(blog_post.title)}</title>
<base target="_top">
</head>
<body>
<h1><a href="./">🪵Tilde Friends Blog</a></h1>
<div>
<div><a href="../ssb/#${escapeAttribute(blog_post.author)}">${escape(blog_post.name)}</a> ${escape(new Date(blog_post.timestamp).toString())}</div>
<div>${markdown(blob)}</div>

19
apps/blog/handler.js
View File

@ -3,22 +3,9 @@ import * as blog from './blog.js';
async function main() {
if (request.path.startsWith('%') && request.path.endsWith('.sha256')) {
let id = request.path.startsWith('%25') ? '%' + request.path.substring(3) : request.path;
let blob = await ssb.messageContentGet(id);
if (blob) {
let content = JSON.parse(utf8Decode(blob));
let md = content?.text;
if (content?.type == 'blog') {
md = utf8Decode(await ssb.blobGet(content?.blog));
}
respond({data: `<!DOCTYPE html>
<html>
<head>
<base target="_top">
</head>
<body>
${blog.markdown(md)}
</body>
</html>`, content_type: 'text/html; charset=utf-8'});
let message = await blog.get_blog_message(id);
if (message) {
respond({data: await blog.render_blog_post_html(message), content_type: 'text/html; charset=utf-8'});
} else {
respond({data: `Message ${id} not found.`, content_type: 'text/html; charset=utf-8'});
}