underbbs/frontend/ts/thread-summary-element.ts

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import util from "./util"
import { Message, Author } from "./message"
import { AdapterState } from "./adapter"
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import { BatchTimer } from "./batch-timer"
export class ThreadSummaryElement extends HTMLElement {
static observedAttributes = [ "data-msg", "data-len", "data-author", "data-created", "data-latest", "data-new" ];
private _len: number = 0;;
private _msg: Message | null = null;;
private _author: Author | null = null;
private _adapter: string = "";
private _created: number = 0;
private _latest: number = 0;
private _new: boolean = false;
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private _authorTimer: BatchTimer;
constructor() {
super();
this.innerHTML = "<div class='thread_summary'><div class='thread_author'></div><div class='thread_text'></div><div class='thread_metadata'></div></div>"
// adapter shouldn't change, just set it here
this._adapter = this.getAttribute("data-adapter") ?? "";
this.addEventListener("click", this.viewThread(this), false);
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this._authorTimer = new BatchTimer((ids: string[])=>{
let url = `/api/adapters/${this._adapter}/fetch?entity_type=author`;
for (let id of ids) {
url += `&entity_id=${id}`;
}
util.authorizedFetch("GET", url, null)
});
}
connectedCallback() {
}
attributeChangedCallback(attr: string, prev: string, next: string) {
const datastore = AdapterState._instance.data.get(this._adapter);
if (!datastore) {
return;
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}
let metadataChanged = false;
switch (attr) {
case "data-msg":
if (next && next != prev) {
this._msg = datastore.messages.get(next) || null;
if (this._msg) {
// TODO: use attachment alttext or fallback text if no msg content
// TODO: handle boosts, quotes properly
const threadText = this.querySelector(".thread_text");
if (threadText) {
threadText.innerHTML = this._msg.content;
}
this.setAttribute("data-author", this._msg.author);
}
}
break;
case "data-author":
if (next) {
let authorData= datastore.profileCache.get(next);
if (!authorData) {
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this._authorTimer.queue(next, 2000);
this._author = <Author>{id: next};
const threadAuthor = this.querySelector(".thread_author");
if (threadAuthor) {
threadAuthor.innerHTML = `<a id="thread_${this._adapter}_${(this._msg ? this._msg.id : 0)}_${this._author.id}" href="#author?id=${this._author.id}">${this._author.id}</a>`;
}
} else {
this._author = authorData;
const threadAuthor = this.querySelector(".thread_author");
if (threadAuthor) {
threadAuthor.innerHTML = `<img src="${this._author.profilePic}" alt="${this._author.id}"/> <a id="thread_${this._adapter}_${(this._msg ? this._msg.id : 0)}_${this._author.id}" href="#author?id=${this._author.id}">${this._author.id}</a>`
}
}
}
break;
case "data-len":
this._len = parseInt(next);
metadataChanged = true;
break;
case "data-latest":
this._latest = parseInt(next);
metadataChanged = true;
break;
case "data-new":
this._new = next ? true : false;
metadataChanged = true;
break;
}
if (metadataChanged) {
const threadMeta = this.querySelector(".thread_metadata");
if (threadMeta) {
threadMeta.innerHTML = `<span>${this._new ? "!" : ""}[${this._len}] created: ${new Date(this._created)}, updated: ${new Date(this._latest)}</span>`;
}
}
}
viewThread(self: ThreadSummaryElement) {
return () => {
const a = util.$(`adapter_${self._adapter}`);
if (a && self._msg) {
a.setAttribute("data-view", "thread");
a.setAttribute("data-viewing", self._msg.id);
}
}
}
}