async function query(sql, args) {
let rows = [];
await ssb.sqlAsync(sql, args ?? [], function(row) {
rows.push(row);
});
return rows;;
}
async function get_biggest() {
return query(`
select author, sum(length(content)) as size from messages group by author order by size desc limit 10;
`);
}
async function get_total() {
return (await query(`
select sum(length(content)) as size, count(distinct author) as count from messages;
`))[0];
}
async function get_names(identities) {
return 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, '$.type') = 'about' AND
content ->> 'about' = messages.author AND name IS NOT NULL)
WHERE author_rank = 1
`, [JSON.stringify(identities)]);
}
function nice_size(bytes) {
let value = bytes;
let index = 0;
let units = ['B', 'kB', 'MB', 'GB'];
while (value > 1024 && index < units.length - 1) {
value /= 1024;
index++;
}
return `${Math.round(value * 10) / 10} ${units[index]}`;
}
async function main() {
await app.setDocument('Finding the top 10 largest feeds...
');
let total = await get_total();
let identities = await ssb.getAllIdentities();
let following1 = await ssb.following(identities, 1);
let following2 = await ssb.following(identities, 2);
let biggest = await get_biggest();
let names = await get_names(biggest.map(x => x.author));
names = Object.fromEntries(names.map(x => [x.author, x.name]));
for (let item of biggest) {
item.name = names[item.author];
item.following =
identities.indexOf(item.author) != -1 ? 0 :
following1[item.author] !== undefined ? 1 :
following2[item.author] !== undefined ? 2 :
undefined;
}
let html = `\n
Top 10 Accounts by Size
`;
for (let item of biggest) {
html += `-
${nice_size(item.size)}
${item.name ?? item.author}
\n`;
}
html += `
Total ${nice_size(total.size)} in ${total.count} accounts.
`;
await app.setDocument(html);
}
main().catch(function(e) { print(e); });