47 lines
1.4 KiB
JavaScript
47 lines
1.4 KiB
JavaScript
import Event from "./Event";
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export default class Thread {
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constructor() {
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/** @type {Tag} */
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this.Root = null;
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/** @type {Tag} */
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this.ReplyTo = null;
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/** @type {Array<Tag>} */
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this.Mentions = [];
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/** @type {Event} */
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this.Reply = null;
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/** @type {Array<String>} */
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this.PubKeys = [];
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}
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/**
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* Extract thread information from an Event
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* @param {Event} ev Event to extract thread from
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*/
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static ExtractThread(ev) {
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let isThread = ev.Tags.some(a => a.Key === "e");
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if (!isThread) {
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return null;
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}
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let ret = new Thread();
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ret.Reply = ev;
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let eTags = ev.Tags.filter(a => a.Key === "e");
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let marked = eTags.some(a => a.Marker !== null);
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if (!marked) {
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ret.Root = eTags[0];
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if (eTags.length > 2) {
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ret.Mentions = eTags.slice(1, -1);
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}
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ret.ReplyTo = eTags[eTags.length - 1];
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} else {
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let root = eTags.find(a => a.Marker === "root");
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let reply = eTags.find(a => a.Marker === "reply");
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ret.Root = root;
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ret.ReplyTo = reply;
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ret.Mentions = eTags.filter(a => a.Marker === "mention");
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}
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ret.PubKeys = ev.Tags.filter(a => a.Key === "p").map(a => a.PubKey);
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return ret;
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}
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} |