let g_hash;
async function query(sql, params) {
let results = [];
await ssb.sqlAsync(sql, params, function (row) {
results.push(row);
});
return results;
}
async function resolve(id) {
try {
let blob = await ssb.blobGet(id);
if (blob) {
let json;
try {
json = JSON.parse(utf8Decode(blob));
} catch {
return {id: utf8Decode(blob)};
}
if (json?.links) {
for (let [key, value] of Object.entries(json.links)) {
json.links[key] = await resolve(value);
}
return json;
} else {
return 'huh?' + json;
}
} else {
return `missing<${id}>`;
}
} catch (e) {
return id + ': ' + e.message;
}
}
async function get_names(identities) {
return Object.fromEntries(
(
await query(
`
SELECT author, name FROM (
SELECT
messages.author,
RANK() OVER (PARTITION BY messages.author ORDER BY messages.sequence DESC) AS author_rank,
messages.content ->> 'name' AS name
FROM messages
JOIN json_each(?) AS identities ON identities.value = messages.author
WHERE
json_extract(messages.content, '$.type') = 'about' AND
content ->> 'about' = messages.author AND name IS NOT NULL)
WHERE author_rank = 1
`,
[JSON.stringify(identities)]
)
).map((x) => [x.author, x.name])
);
}
async function render(hash) {
g_hash = hash;
if (!hash) {
let sites = await query(
`
SELECT site.author, site.id
FROM messages site
WHERE site.content ->> 'type' = 'web-init'
`,
[]
);
let names = await get_names(sites.map((x) => x.author));
if (hash === g_hash) {
await app.setDocument(
``
);
}
} else {
let site_id =
hash.charAt(0) == '#'
? decodeURIComponent(hash.substring(1))
: decodeURIComponent(hash);
await app.setDocument(`
`);
}
}
core.register('message', async function message_handler(message) {
if (message.event == 'hashChange') {
await render(message.hash);
}
});
async function main() {
render(null);
}
main();