// scuttlebot.js

const ssbClient = require('ssb-client');
const ssbKeys = require('ssb-keys');
const pull = require('pull-stream');

const keys = ssbKeys.loadOrCreateSync('~/.ssb/secret');

ssbClient(keys, (err, sbot) => {
    if (err) {
        console.error(JSON.stringify({ "error": "Failed to connect to the Scuttlebot server. Is it running?" }));
        console.error(err);
        process.exit(1);
    }

    const authors = new Set();

    pull(
        sbot.messagesByType("contact"),
        pull.drain((msg) => {
            authors.add(msg.value.author);
        }, (err) => {
            if (err) {
                console.error(JSON.stringify({ "error": "Failed to retrieve messages." }));
                console.error(err);
                process.exit(1);
            }

            const feeds = Array.from(authors).map(author => { return { id: author } });
            console.log(JSON.stringify(feeds));
            try {
                sbot.close(() => {});
            } catch(err) {
                console.error("Error closing SSB server connection: ", err);
            }
        })
    );
});