Thread viewer for Bluesky
mackuba.eu
1/**
2 * Renders a post/thread view and its subviews.
3 */
4
5class PostComponent {
6 /**
7 * Post component's root HTML element, if built.
8 * @type {HTMLElement | undefined}
9 */
10 _rootElement;
11
12 /**
13 Contexts:
14 - thread - a post in the thread tree
15 - parent - parent reference above the thread root
16 - quote - a quote embed
17 - quotes - a post on the quotes page
18 - feed - a post on the hashtag feed page
19
20 @typedef {'thread' | 'parent' | 'quote' | 'quotes' | 'feed'} PostContext
21 @param {AnyPost} post, @param {PostContext} context
22 */
23 constructor(post, context) {
24 this.post = /** @type {Post}, TODO */ (post);
25 this.context = context;
26 }
27
28 /**
29 * @returns {HTMLElement}
30 */
31 get rootElement() {
32 if (!this._rootElement) {
33 throw new Error("rootElement not initialized");
34 }
35
36 return this._rootElement;
37 }
38
39 /** @returns {boolean} */
40 get isRoot() {
41 return this.post.isRoot;
42 }
43
44 /** @returns {string} */
45 get linkToAuthor() {
46 if (this.post.author.handle != 'handle.invalid') {
47 return 'https://bsky.app/profile/' + this.post.author.handle;
48 } else {
49 return 'https://bsky.app/profile/' + this.post.author.did;
50 }
51 }
52
53 /** @returns {string} */
54 get linkToPost() {
55 return this.linkToAuthor + '/post/' + this.post.rkey;
56 }
57
58 /** @returns {string} */
59 get didLinkToAuthor() {
60 let { repo } = atURI(this.post.uri);
61 return `https://bsky.app/profile/${repo}`;
62 }
63
64 /** @returns {string} */
65 get didLinkToPost() {
66 let { repo, rkey } = atURI(this.post.uri);
67 return `https://bsky.app/profile/${repo}/post/${rkey}`;
68 }
69
70 /** @returns {string} */
71 get authorName() {
72 if (this.post.author.displayName) {
73 return this.post.author.displayName;
74 } else if (this.post.author.handle.endsWith('.bsky.social')) {
75 return this.post.author.handle.replace(/\.bsky\.social$/, '');
76 } else {
77 return this.post.author.handle;
78 }
79 }
80
81 /** @returns {json} */
82 get timeFormatForTimestamp() {
83 if (this.context == 'quotes' || this.context == 'feed') {
84 return { weekday: 'short', day: 'numeric', month: 'short', year: 'numeric', hour: 'numeric', minute: 'numeric' };
85 } else if (this.isRoot || this.context != 'thread') {
86 return { day: 'numeric', month: 'short', year: 'numeric', hour: 'numeric', minute: 'numeric' };
87 } else if (this.post.pageRoot && !sameDay(this.post.createdAt, this.post.pageRoot.createdAt)) {
88 return { day: 'numeric', month: 'short', hour: 'numeric', minute: 'numeric' };
89 } else {
90 return { hour: 'numeric', minute: 'numeric' };
91 }
92 }
93
94 /** @param {HTMLElement} nodeToUpdate */
95 installIntoElement(nodeToUpdate) {
96 let view = this.buildElement();
97
98 let oldContent = $(nodeToUpdate.querySelector('.content'));
99 let newContent = $(view.querySelector('.content'));
100 oldContent.replaceWith(newContent);
101
102 this._rootElement = nodeToUpdate;
103 }
104
105 /** @returns {HTMLElement} */
106 buildElement() {
107 if (this._rootElement) {
108 return this._rootElement;
109 }
110
111 let div = $tag('div.post', `post-${this.context}`);
112 this._rootElement = div;
113
114 if (this.post.muted) {
115 div.classList.add('muted');
116 }
117
118 if (this.post instanceof BlockedPost) {
119 this.buildBlockedPostElement(div);
120 return div;
121 } else if (this.post instanceof DetachedQuotePost) {
122 this.buildDetachedQuoteElement(div);
123 return div;
124 } else if (this.post instanceof MissingPost) {
125 this.buildMissingPostElement(div);
126 return div;
127 }
128
129 let header = this.buildPostHeader();
130 div.appendChild(header);
131
132 let content = $tag('div.content');
133
134 if (this.context == 'thread' && !this.isRoot) {
135 let edgeMargin = this.buildEdgeMargin();
136 div.appendChild(edgeMargin);
137 }
138
139 let wrapper;
140
141 if (this.post.muted) {
142 let details = $tag('details');
143
144 let summary = $tag('summary');
145 summary.innerText = this.post.muteList ? `Muted (${this.post.muteList})` : 'Muted - click to show';
146 details.appendChild(summary);
147
148 content.appendChild(details);
149 wrapper = details;
150 } else {
151 wrapper = content;
152 }
153
154 let p = this.buildPostBody();
155 wrapper.appendChild(p);
156
157 if (this.post.tags) {
158 let tagsRow = this.buildTagsRow(this.post.tags);
159 wrapper.appendChild(tagsRow);
160 }
161
162 if (this.post.embed) {
163 let embed = new EmbedComponent(this.post, this.post.embed).buildElement();
164 wrapper.appendChild(embed);
165 }
166
167 if (this.post.likeCount !== undefined && this.post.repostCount !== undefined) {
168 let stats = this.buildStatsFooter();
169 wrapper.appendChild(stats);
170 }
171
172 if (this.post.replyCount == 1 && this.post.replies[0]?.author?.did == this.post.author.did) {
173 let component = new PostComponent(this.post.replies[0], 'thread');
174 let element = component.buildElement();
175 element.classList.add('flat');
176 content.appendChild(element);
177 } else {
178 for (let reply of this.post.replies) {
179 if (reply instanceof MissingPost) { continue }
180 if (reply instanceof BlockedPost && window.biohazardEnabled === false) { continue }
181
182 let component = new PostComponent(reply, 'thread');
183 content.appendChild(component.buildElement());
184 }
185 }
186
187 if (this.context == 'thread') {
188 if (this.post.hasMoreReplies) {
189 let loadMore = this.buildLoadMoreLink();
190 content.appendChild(loadMore);
191 } else if (this.post.hasHiddenReplies && window.biohazardEnabled !== false) {
192 let loadMore = this.buildHiddenRepliesLink();
193 content.appendChild(loadMore);
194 }
195 }
196
197 div.appendChild(content);
198
199 return div;
200 }
201
202 /** @returns {HTMLElement} */
203
204 buildPostHeader() {
205 let timeFormat = this.timeFormatForTimestamp;
206 let formattedTime = this.post.createdAt.toLocaleString(window.dateLocale, timeFormat);
207 let isoTime = this.post.createdAt.toISOString();
208
209 let h = $tag('h2');
210
211 h.innerHTML = `${escapeHTML(this.authorName)} `;
212
213 if (this.post.isFediPost) {
214 let handle = `@${this.post.authorFediHandle}`;
215 h.innerHTML += `<a class="handle" href="${this.linkToAuthor}" target="_blank">${handle}</a> ` +
216 `<img src="icons/mastodon.svg" class="mastodon"> `;
217 } else {
218 let handle = (this.post.author.handle != 'handle.invalid') ? `@${this.post.author.handle}` : '[invalid handle]';
219 h.innerHTML += `<a class="handle" href="${this.linkToAuthor}" target="_blank">${handle}</a> `;
220 }
221
222 h.innerHTML += `<span class="separator">•</span> ` +
223 `<a class="time" href="${this.linkToPost}" target="_blank" title="${isoTime}">${formattedTime}</a> `;
224
225 if (this.post.replyCount > 0 && !this.isRoot || ['quote', 'quotes', 'feed'].includes(this.context)) {
226 h.innerHTML +=
227 `<span class="separator">•</span> ` +
228 `<a href="${linkToPostThread(this.post)}" class="action" title="Load this subtree">` +
229 `<i class="fa-solid fa-arrows-split-up-and-left fa-rotate-180"></i></a> `;
230 }
231
232 if (this.post.muted) {
233 h.prepend($tag('i', 'missing fa-regular fa-circle-user fa-2x'));
234 } else if (this.post.author.avatar) {
235 h.prepend(this.buildUserAvatar(this.post.author.avatar));
236 } else {
237 h.prepend($tag('i', 'missing fa-regular fa-face-smile fa-2x'));
238 }
239
240 return h;
241 }
242
243 buildEdgeMargin() {
244 let div = $tag('div.margin');
245
246 let edge = $tag('div.edge');
247 let line = $tag('div.line');
248 edge.appendChild(line);
249 div.appendChild(edge);
250
251 let plus = $tag('img.plus', { src: 'icons/subtract-square.png' });
252 div.appendChild(plus);
253
254 [edge, plus].forEach(x => {
255 x.addEventListener('click', (e) => {
256 e.preventDefault();
257 this.toggleSectionFold();
258 });
259 });
260
261 return div;
262 }
263
264 /** @param {string} url, @returns {HTMLImageElement} */
265
266 buildUserAvatar(url) {
267 let avatar = $tag('img.avatar', { loading: 'lazy' }, HTMLImageElement); // needs to be set before src!
268 avatar.src = url;
269 window.avatarPreloader.observe(avatar);
270 return avatar;
271 }
272
273 /** @returns {HTMLElement} */
274
275 buildPostBody() {
276 if (this.post.originalFediContent) {
277 return $tag('div.body', { html: sanitizeHTML(this.post.originalFediContent) });
278 }
279
280 let p = $tag('p.body');
281 let richText = new RichText({ text: this.post.text, facets: this.post.facets });
282
283 for (let seg of richText.segments()) {
284 if (seg.mention) {
285 p.append($tag('a', { href: `https://bsky.app/profile/${seg.mention.did}`, text: seg.text }));
286 } else if (seg.link) {
287 p.append($tag('a', { href: seg.link.uri, text: seg.text }));
288 } else if (seg.tag) {
289 let url = new URL(getLocation());
290 url.searchParams.set('hash', seg.tag.tag);
291 p.append($tag('a', { href: url.toString(), text: seg.text }));
292 } else if (seg.text.includes("\n")) {
293 let span = $tag('span', { text: seg.text });
294 span.innerHTML = span.innerHTML.replaceAll("\n", "<br>");
295 p.append(span);
296 } else {
297 p.append(seg.text);
298 }
299 }
300
301 return p;
302 }
303
304 /** @param {string[]} terms */
305
306 highlightSearchResults(terms) {
307 let regexp = new RegExp(`\\b(${terms.join('|')})\\b`, 'gi');
308
309 let body = this._rootElement.querySelector(':scope > .content > .body');
310 let walker = document.createTreeWalker(body, NodeFilter.SHOW_TEXT);
311 let textNodes = [];
312
313 while (walker.nextNode()) {
314 textNodes.push(walker.currentNode);
315 }
316
317 for (let node of textNodes) {
318 let markedText = document.createDocumentFragment();
319 let currentPosition = 0;
320
321 for (;;) {
322 let match = regexp.exec(node.textContent);
323 if (match === null) break;
324
325 if (match.index > currentPosition) {
326 let earlierText = node.textContent.slice(currentPosition, match.index);
327 markedText.appendChild(document.createTextNode(earlierText));
328 }
329
330 let span = $tag('span.highlight', { text: match[0] });
331 markedText.appendChild(span);
332
333 currentPosition = match.index + match[0].length;
334 }
335
336 if (currentPosition < node.textContent.length) {
337 let remainingText = node.textContent.slice(currentPosition);
338 markedText.appendChild(document.createTextNode(remainingText));
339 }
340
341 node.parentNode.replaceChild(markedText, node);
342 }
343 }
344
345 /** @param {string[]} tags, @returns {HTMLElement} */
346
347 buildTagsRow(tags) {
348 let p = $tag('p.tags');
349
350 for (let tag of tags) {
351 let url = new URL(getLocation());
352 url.searchParams.set('hash', tag);
353
354 let tagLink = $tag('a', { href: url.toString(), text: '# ' + tag });
355 p.append(tagLink);
356 }
357
358 return p;
359 }
360
361 /** @returns {HTMLElement} */
362
363 buildStatsFooter() {
364 let stats = $tag('p.stats');
365
366 let span = $tag('span');
367 let heart = $tag('i', 'fa-solid fa-heart ' + (this.post.liked ? 'liked' : ''));
368 heart.addEventListener('click', (e) => this.onHeartClick(heart));
369
370 span.append(heart, ' ', $tag('output', { text: this.post.likeCount }));
371 stats.append(span);
372
373 if (this.post.repostCount > 0) {
374 let span = $tag('span', { html: `<i class="fa-solid fa-retweet"></i> ${this.post.repostCount}` });
375 stats.append(span);
376 }
377
378 if (this.post.replyCount > 0 && (this.context == 'quotes' || this.context == 'feed')) {
379 let pluralizedCount = (this.post.replyCount > 1) ? `${this.post.replyCount} replies` : '1 reply';
380 let span = $tag('span', {
381 html: `<i class="fa-regular fa-message"></i> <a href="${linkToPostThread(this.post)}">${pluralizedCount}</a>`
382 });
383 stats.append(span);
384 }
385
386 if (!this.isRoot && this.context != 'quote' && this.post.quoteCount) {
387 let expanded = this.context == 'quotes' || this.context == 'feed';
388 let quotesLink = this.buildQuotesIconLink(this.post.quoteCount, expanded);
389 stats.append(quotesLink);
390 }
391
392 if (this.context == 'thread' && this.post.isRestrictingReplies) {
393 let span = $tag('span', { html: `<i class="fa-solid fa-ban"></i> Limited replies` });
394 stats.append(span);
395 }
396
397 return stats;
398 }
399
400 /** @param {number} count, @param {boolean} expanded, @returns {HTMLElement} */
401
402 buildQuotesIconLink(count, expanded) {
403 let q = new URL(getLocation());
404 q.searchParams.set('quotes', this.linkToPost);
405
406 let url = q.toString();
407 let icon = `<i class="fa-regular fa-comments"></i>`;
408
409 if (expanded) {
410 let span = $tag('span', { html: `${icon} ` });
411 let link = $tag('a', { text: (count > 1) ? `${count} quotes` : '1 quote', href: url });
412 span.append(link);
413 return span;
414 } else {
415 return $tag('a', { html: `${icon} ${count}`, href: url });
416 }
417 }
418
419 /** @param {number} quoteCount, @param {boolean} expanded */
420
421 appendQuotesIconLink(quoteCount, expanded) {
422 let stats = $(this.rootElement.querySelector(':scope > .content > p.stats'));
423 let quotesLink = this.buildQuotesIconLink(quoteCount, expanded);
424 stats.append(quotesLink);
425 }
426
427 /** @returns {HTMLElement} */
428
429 buildLoadMoreLink() {
430 let loadMore = $tag('p');
431
432 let link = $tag('a', {
433 href: linkToPostThread(this.post),
434 text: "Load more replies…"
435 });
436
437 link.addEventListener('click', (e) => {
438 e.preventDefault();
439 loadMore.innerHTML = `<img class="loader" src="icons/sunny.png">`;
440 this.loadSubtree(this.post, this.rootElement);
441 });
442
443 loadMore.appendChild(link);
444 return loadMore;
445 }
446
447 /** @returns {HTMLElement} */
448
449 buildHiddenRepliesLink() {
450 let loadMore = $tag('p.hidden-replies');
451
452 let link = $tag('a', {
453 href: linkToPostThread(this.post),
454 text: "Load hidden replies…"
455 });
456
457 link.addEventListener('click', (e) => {
458 e.preventDefault();
459
460 if (window.biohazardEnabled === true) {
461 this.loadHiddenReplies(loadMore);
462 } else {
463 window.loadInfohazard = () => this.loadHiddenReplies(loadMore);
464 showDialog($id('biohazard_dialog'));
465 }
466 });
467
468 loadMore.append("☣️ ", link);
469 return loadMore;
470 }
471
472 /** @param {HTMLElement} loadMoreButton */
473
474 loadHiddenReplies(loadMoreButton) {
475 loadMoreButton.innerHTML = `<img class="loader" src="icons/sunny.png">`;
476 this.loadHiddenSubtree(this.post, this.rootElement);
477 }
478
479 /** @param {HTMLLinkElement} authorLink */
480
481 loadReferencedPostAuthor(authorLink) {
482 let did = atURI(this.post.uri).repo;
483
484 api.fetchHandleForDid(did).then(handle => {
485 if (this.post.author) {
486 this.post.author.handle = handle;
487 } else {
488 this.post.author = { did, handle };
489 }
490
491 authorLink.href = this.linkToAuthor;
492 authorLink.innerText = `@${handle}`;
493 });
494 }
495
496 /** @param {HTMLElement} div, @returns {HTMLElement} */
497
498 buildBlockedPostElement(div) {
499 let p = $tag('p.blocked-header');
500 p.innerHTML = `<i class="fa-solid fa-ban"></i> <span>Blocked post</span>`;
501
502 if (window.biohazardEnabled === false) {
503 div.appendChild(p);
504 div.classList.add('blocked');
505 return p;
506 }
507
508 let blockStatus = this.post.blockedByUser ? 'has blocked you' : this.post.blocksUser ? "you've blocked them" : '';
509 blockStatus = blockStatus ? `, ${blockStatus}` : '';
510
511 let authorLink = $tag('a', { href: this.didLinkToAuthor, target: '_blank', text: 'see author' }, HTMLLinkElement);
512 p.append(' (', authorLink, blockStatus, ') ');
513 div.appendChild(p);
514
515 this.loadReferencedPostAuthor(authorLink);
516
517 let loadPost = $tag('p.load-post');
518 let a = $tag('a', { href: '#', text: "Load post…" });
519
520 a.addEventListener('click', (e) => {
521 e.preventDefault();
522 loadPost.innerHTML = ' ';
523 this.loadBlockedPost(this.post.uri, div);
524 });
525
526 loadPost.appendChild(a);
527 div.appendChild(loadPost);
528 div.classList.add('blocked');
529 return div;
530 }
531
532 /** @param {HTMLElement} div, @returns {HTMLElement} */
533
534 buildDetachedQuoteElement(div) {
535 let p = $tag('p.blocked-header');
536 p.innerHTML = `<i class="fa-solid fa-ban"></i> <span>Hidden quote</span>`;
537
538 if (window.biohazardEnabled === false) {
539 div.appendChild(p);
540 div.classList.add('blocked');
541 return p;
542 }
543
544 let authorLink = $tag('a', { href: this.didLinkToAuthor, target: '_blank', text: 'see author' }, HTMLLinkElement);
545 p.append(' (', authorLink, ') ');
546 div.appendChild(p);
547
548 this.loadReferencedPostAuthor(authorLink);
549
550 let loadPost = $tag('p.load-post');
551 let a = $tag('a', { href: '#', text: "Load post…" });
552
553 a.addEventListener('click', (e) => {
554 e.preventDefault();
555 loadPost.innerHTML = ' ';
556 this.loadBlockedPost(this.post.uri, div);
557 });
558
559 loadPost.appendChild(a);
560 div.appendChild(loadPost);
561 div.classList.add('blocked');
562 return div;
563 }
564
565 /** @param {HTMLElement} div, @returns {HTMLElement} */
566
567 buildMissingPostElement(div) {
568 let p = $tag('p.blocked-header');
569 p.innerHTML = `<i class="fa-solid fa-ban"></i> <span>Deleted post</span>`;
570
571 let authorLink = $tag('a', { href: this.didLinkToAuthor, target: '_blank', text: 'see author' }, HTMLLinkElement);
572 p.append(' (', authorLink, ') ');
573
574 this.loadReferencedPostAuthor(authorLink);
575
576 div.appendChild(p);
577 div.classList.add('blocked');
578 return div;
579 }
580
581 /** @param {string} uri, @param {HTMLElement} div, @returns Promise<void> */
582
583 async loadBlockedPost(uri, div) {
584 let record = await appView.loadPostIfExists(this.post.uri);
585
586 if (!record) {
587 let post = new MissingPost({ uri: this.post.uri });
588 let postView = new PostComponent(post, 'quote').buildElement();
589 div.replaceWith(postView);
590 return;
591 }
592
593 this.post = new Post(record);
594
595 let userView = await api.getRequest('app.bsky.actor.getProfile', { actor: this.post.author.did });
596
597 if (!userView.viewer || !(userView.viewer.blockedBy || userView.viewer.blocking)) {
598 let { repo, rkey } = atURI(this.post.uri);
599
600 let a = $tag('a', {
601 href: linkToPostById(repo, rkey),
602 className: 'action',
603 title: "Load thread",
604 html: `<i class="fa-solid fa-arrows-split-up-and-left fa-rotate-180"></i>`
605 });
606
607 let header = $(div.querySelector('p.blocked-header'));
608 let separator = $tag('span.separator', { html: '•' });
609 header.append(separator, ' ', a);
610 }
611
612 let loadPost = $(div.querySelector('p.load-post'));
613 loadPost.remove();
614
615 if (this.isRoot && this.post.parentReference) {
616 let { repo, rkey } = atURI(this.post.parentReference.uri);
617 let url = linkToPostById(repo, rkey);
618
619 let handle = api.findHandleByDid(repo);
620 let link = handle ? `See parent post (@${handle})` : "See parent post";
621
622 let p = $tag('p.back', { html: `<i class="fa-solid fa-reply"></i><a href="${url}">${link}</a>` });
623 div.appendChild(p);
624 }
625
626 let p = this.buildPostBody();
627 div.appendChild(p);
628
629 if (this.post.embed) {
630 let embed = new EmbedComponent(this.post, this.post.embed).buildElement();
631 div.appendChild(embed);
632
633 // TODO
634 Array.from(div.querySelectorAll('a.link-card')).forEach(x => x.remove());
635 }
636 }
637
638 /** @param {Post} post, @param {HTMLElement} nodeToUpdate, @returns {Promise<void>} */
639
640 async loadSubtree(post, nodeToUpdate) {
641 try {
642 let json = await api.loadThreadByAtURI(post.uri);
643
644 let root = Post.parseThreadPost(json.thread, post.pageRoot, 0, post.absoluteLevel);
645 post.updateDataFromPost(root);
646 window.subtreeRoot = post;
647
648 let component = new PostComponent(post, 'thread');
649 component.installIntoElement(nodeToUpdate);
650 } catch (error) {
651 showError(error);
652 }
653 }
654
655
656 /** @param {Post} post, @param {HTMLElement} nodeToUpdate, @returns {Promise<void>} */
657
658 async loadHiddenSubtree(post, nodeToUpdate) {
659 let content = $(nodeToUpdate.querySelector('.content'));
660 let hiddenRepliesDiv = $(content.querySelector(':scope > .hidden-replies'));
661
662 try {
663 var expectedReplyURIs = await blueAPI.getReplies(post.uri);
664 } catch (error) {
665 hiddenRepliesDiv.remove();
666
667 if (error instanceof APIError && error.code == 404) {
668 let info = $tag('p.missing-replies-info', {
669 html: `<i class="fa-solid fa-ban"></i> Hidden replies not available (post too old)`
670 });
671 content.append(info);
672 } else {
673 setTimeout(() => showError(error), 1);
674 }
675
676 return;
677 }
678
679 let missingReplyURIs = expectedReplyURIs.filter(r => !post.replies.some(x => x.uri === r));
680 let promises = missingReplyURIs.map(uri => api.loadThreadByAtURI(uri));
681
682 try {
683 // TODO
684 var responses = await Promise.allSettled(promises);
685 } catch (error) {
686 hiddenRepliesDiv.remove();
687 setTimeout(() => showError(error), 1);
688 return;
689 }
690
691 let replies = responses
692 .map(r => r.status == 'fulfilled' ? r.value : undefined)
693 .filter(v => v)
694 .map(json => Post.parseThreadPost(json.thread, post.pageRoot, 1, post.absoluteLevel + 1));
695
696 post.setReplies(replies);
697 hiddenRepliesDiv.remove();
698
699 for (let reply of post.replies) {
700 let component = new PostComponent(reply, 'thread');
701 let view = component.buildElement();
702 content.append(view);
703 }
704
705 if (replies.length < responses.length) {
706 let notFoundCount = responses.length - replies.length;
707 let pluralizedCount = (notFoundCount > 1) ? `${notFoundCount} replies are` : '1 reply is';
708
709 let info = $tag('p.missing-replies-info', {
710 html: `<i class="fa-solid fa-ban"></i> ${pluralizedCount} missing (likely taken down by moderation)`
711 });
712 content.append(info);
713 }
714 }
715
716 /** @returns {boolean} */
717 isCollapsed() {
718 return this.rootElement.classList.contains('collapsed');
719 }
720
721 toggleSectionFold() {
722 let plus = $(this.rootElement.querySelector(':scope > .margin .plus'), HTMLImageElement);
723
724 if (this.isCollapsed()) {
725 this.rootElement.classList.remove('collapsed');
726 plus.src = 'icons/subtract-square.png'
727 } else {
728 this.rootElement.classList.add('collapsed');
729 plus.src = 'icons/add-square.png'
730 }
731 }
732
733 /** @param {HTMLElement} heart, @returns {Promise<void>} */
734
735 async onHeartClick(heart) {
736 try {
737 if (!this.post.hasViewerInfo) {
738 if (accountAPI.isLoggedIn) {
739 let data = await this.loadViewerInfo();
740
741 if (data) {
742 if (this.post.liked) {
743 heart.classList.add('liked');
744 return;
745 } else {
746 // continue down
747 }
748 } else {
749 this.showPostAsBlocked();
750 return;
751 }
752 } else {
753 // not logged in
754 showDialog(loginDialog);
755 return;
756 }
757 }
758
759 let countField = $(heart.nextElementSibling);
760 let likeCount = parseInt(countField.innerText, 10);
761
762 if (!heart.classList.contains('liked')) {
763 let like = await accountAPI.likePost(this.post);
764 this.post.viewerLike = like.uri;
765 heart.classList.add('liked');
766 countField.innerText = String(likeCount + 1);
767 } else {
768 await accountAPI.removeLike(this.post.viewerLike);
769 this.post.viewerLike = undefined;
770 heart.classList.remove('liked');
771 countField.innerText = String(likeCount - 1);
772 }
773 } catch (error) {
774 showError(error);
775 }
776 }
777
778 showPostAsBlocked() {
779 let stats = $(this.rootElement.querySelector(':scope > .content > p.stats'));
780
781 if (!stats.querySelector('.blocked-info')) {
782 let span = $tag('span.blocked-info', { text: '🚫 Post unavailable' });
783 stats.append(span);
784 }
785 }
786
787 /** @returns {Promise<json | undefined>} */
788
789 async loadViewerInfo() {
790 let data = await accountAPI.loadPostIfExists(this.post.uri);
791
792 if (data) {
793 this.post.author = data.author;
794 this.post.viewerData = data.viewer;
795 this.post.viewerLike = data.viewer?.like;
796 }
797
798 return data;
799 }
800}