blowater/time.ts

import { NostrEvent } from "./lib/nostr-ts/nostr.ts";
import { getTags } from "./nostr.ts";

export class LamportTime {
    constructor(private time: number) {}
    now() {
        this.time++;
        return this.time;
    }
    set(t: number) {
        this.time = Math.max(this.time, t);
    }
}

export function fromEvents(events: Iterable<NostrEvent>): LamportTime {
    let time = 0;
    for (const event of events) {
        const ts = getTags(event).lamport_timestamp;
        if (ts && ts > time) {
            time = ts;
        }
    }
    return new LamportTime(time);
}