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import { Relay, RelayPool } from "nostr";
import { got } from "got";
import { broadcast } from "$lib/sockets";
import store from "$lib/store";
import redis from "$lib/redis";
const { relays } = await got("https://nostr.watch/relays.json").json();
export const pool = RelayPool(relays);
pool.on("open", relay => {
if (relay.url.includes("coinos")) coinos = relay;
relay.subscribe("live", { limit: 1 });
});
export let coinos;
let seen = [];
let timeout;
pool.on("event", async (relay, sub, ev) => {
try {
let parsed;
try {
parsed = JSON.parse(ev.content);
} catch (e) {
parsed = ev.content;
}
if (sub === "live") {
let { pubkey } = ev;
if (Math.abs(Math.floor(Date.now() / 1000) - ev.created_at) > 7200)
return;
if (seen.includes(ev.id)) return;
seen.push(ev.id);
seen.length > 1000 && seen.shift();
if (coinos && ev.kind < 5) {
coinos.send(["EVENT", ev]);
let newuser = {
username: pubkey.substr(0, 6),
pubkey,
anon: true
};
ev.user = JSON.parse(await redis.get(`user:${pubkey}`)) || newuser;
if (!ev.user.initialized) {
relay.subscribe("zero", {
limit: 1,
kinds: [0],
authors: [pubkey]
});
}
if (ev.kind === 1) {
broadcast("event", ev);
}
}
} else if (sub === "zero") {
let { pubkey } = ev;
let newuser = {
username: pubkey.substr(0, 6),
pubkey,
anon: true
};
let user = JSON.parse(await redis.get(`user:${pubkey}`)) || newuser;
if (parsed.name && user.username === pubkey.substr(0, 6))
user.username = parsed.name;
delete parsed.name;
user = {
...user,
...parsed,
initialized: true
};
await redis.set(`user:${pubkey}`, JSON.stringify(user));
} else if (sub.includes("follows")) {
let pubkey = sub.split(":")[0];
await redis.set(`${pubkey}:follows`, JSON.stringify(ev.tags));
for (let f of ev.tags) {
await redis.sAdd(`${f[1]}:followers`, pubkey);
}
store.fetching[pubkey] = false;
} else {
if (!relay.url.includes("coinos")) return;
let pubkey = sub;
clearTimeout(store.timeouts[pubkey]);
ev.user = JSON.parse(await redis.get(`user:${pubkey}`)) || {
username: pubkey.substr(0, 6),
pubkey,
anon: true
};
await redis.sAdd(pubkey, ev.id);
await redis.set(`ev:${ev.id}`, JSON.stringify(ev));
store.fetching[pubkey] = true;
store.timeouts[pubkey] = setTimeout(
() => (store.fetching[pubkey] = false),
100
);
}
} catch (e) {
console.log(e);
}
});
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