96 lines
No EOL
3.5 KiB
TypeScript
96 lines
No EOL
3.5 KiB
TypeScript
import { Author, Message } from "./message"
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import util from "./util"
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import { BatchTimer } from "./batch-timer"
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import { AdapterState } from "./adapter"
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export class AuthorMessagesElement extends HTMLElement {
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static observedAttributes = [ "data-latest", "data-adapter", "data-target" ];
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private _id: string | null = null;
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private _adapter: string = "";
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private _messages: Message[] = [];
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private _byAuthorTimer: BatchTimer | null = null;
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constructor() {
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super();
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this.innerHTML = `<ul class="messages_list"></ul>`;
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}
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connectedCallback() {
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this._id = this.getAttribute("data-target");
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this._adapter = this.getAttribute("data-adapter") ?? "";
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const gateway = this.getAttribute("data-gateway") ?? "";
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this._byAuthorTimer = new BatchTimer((ids: string[])=>{
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let url = `${gateway}/api/adapters/${this._adapter}/fetch?entity_type=byAuthor`;
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for (let id of ids) {
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url += `&entity_id=${id}`;
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}
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util.authorizedFetch("GET", url, null);
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});
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}
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attributeChangedCallback(attr: string, prev: string, next: string) {
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switch (attr) {
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case "data-target":
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if (!next) {
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return
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}
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this._id = next;
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if (this._byAuthorTimer) {
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this._byAuthorTimer.queue(next, 100)
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}
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break;
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case "data-latest":
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let datastore = AdapterState._instance.data.get(this._adapter);
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if (!datastore) {
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console.log("no data yet, wait for some to come in maybe...");
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return;
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}
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let msg = datastore.messages.get(next);
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if (msg) {
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const existingIdx = this._messages.findIndex(m=>m.id == msg.id && ((m.edited ?? m.created) < (msg.edited ?? msg.created)));
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// first we update the backing data store
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if (existingIdx >= 0) {
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this._messages[existingIdx] = msg;
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} else if (!this._messages.some(m=>m.id == msg.id)) {
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this._messages.push(msg);
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}
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const ul = this.children[0];
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if (ul) {
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// first pass through the dom, try to update a message if it's there
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for (let i = 0; i < ul.childElementCount; i++){
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const id = ul.children[i]?.children[0]?.getAttribute("data-target");
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const ogMsg = this._messages.find(m=>m.id == id);
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if (ogMsg && existingIdx >= 0) {
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ul.children[i]?.children[0]?.setAttribute("data-latest", id ?? "");
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return;
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}
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}
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// if we made it this far, let's create a node
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const e = document.createElement("li");
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e.innerHTML = `<underbbs-message data-adapter="${this._adapter}" data-target="${next}"></underbbs-message>`
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// second pass, try to place it in reverse-chronological order
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for (let i = 0; i < ul.childElementCount; i++){
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const id = ul.children[i]?.children[0]?.getAttribute("data-target");
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const ogMsg = this._messages.find(m=>m.id == id);
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if (ogMsg && ogMsg.created < msg.created) {
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ul.insertBefore(e, ul.children[i])
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e.children[0].setAttribute("data-latest", next);
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return;
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}
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}
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// final pass, we must be the earliest child (or maybe the first one to be rendered)
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ul.append(e);
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e.children[0].setAttribute("data-latest", next);
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}
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console.log(JSON.stringify(this._messages));
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}
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}
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}
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} |