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Fix mounting timing on playlists and initial page refresh

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This commit is contained in:
multipleof4
2026-09-13 14:04:01 -07:00
parent 4e35222571
commit e61a7abb70
1 changed files with 96 additions and 48 deletions
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136
YouTube.os.js
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@@ -1,6 +1,6 @@
// ==UserScript==
// @name Reddit Comments on YouTube
// @version 1.0.0
// @version 1.0.1
// @description View Reddit discussion threads and comments directly above YouTube comments.
// @match https://www.youtube.com/*
// @run-at document_idle
@@ -8,13 +8,11 @@
const MOUNT_ID = 'os-reddit-mount';
const STYLE_ID = 'os-reddit-style';
const COMMENTS_SELECTOR = '#comments';
const DESC_SELECTOR = '#description, #description-inline-expander, ytd-text-inline-expander';
let currentVideoId = null;
let activePostId = null;
let cachedPosts = [];
let abortController = null;
const ensureStyles = () => {
if (document.getElementById(STYLE_ID)) return;
@@ -22,7 +20,7 @@ const ensureStyles = () => {
style.id = STYLE_ID;
style.textContent = `
#${MOUNT_ID} {
margin-bottom: 24px;
margin: 16px 0 24px;
font-family: Roboto, Arial, sans-serif;
color: var(--yt-spec-text-primary, #0f0f0f);
}
@@ -109,9 +107,6 @@ const ensureStyles = () => {
font-size: 13px;
line-height: 1.5;
}
.os-comment-inner {
padding: 4px 0;
}
.os-comment-tagline {
display: flex;
align-items: center;
@@ -189,10 +184,21 @@ const ensureStyles = () => {
background: var(--yt-spec-badge-chip-background, rgba(0,0,0,0.05));
}
.os-status {
padding: 12px 0;
padding: 10px 14px;
font-size: 13px;
border-radius: 8px;
background: var(--yt-spec-badge-chip-background, rgba(0,0,0,0.04));
color: var(--yt-spec-text-secondary, #606060);
font-style: italic;
margin-bottom: 8px;
}
.os-retry-btn {
margin-left: 8px;
color: var(--yt-spec-brand-link-text, #065fd4);
background: none;
border: none;
cursor: pointer;
font-size: 13px;
text-decoration: underline;
}
`;
document.head.append(style);
@@ -221,7 +227,7 @@ const timeAgo = utc => {
const decodeHtml = str => {
const txt = document.createElement('textarea');
txt.innerHTML = str;
txt.innerHTML = str || '';
return txt.value;
};
@@ -243,13 +249,42 @@ const getOfficialSub = () => {
const getMount = () => {
let mount = document.getElementById(MOUNT_ID);
if (mount) return mount;
const target = document.querySelector(COMMENTS_SELECTOR);
if (!target || !target.parentNode) return null;
if (mount && mount.isConnected) return mount;
const comments = document.querySelector('#comments, ytd-comments');
if (comments && comments.parentNode) {
mount = document.createElement('div');
mount.id = MOUNT_ID;
target.parentNode.insertBefore(mount, target);
comments.parentNode.insertBefore(mount, comments);
return mount;
}
const meta = document.querySelector('#below > ytd-watch-metadata, #below > #watch-metadata');
if (meta && meta.parentNode) {
mount = document.createElement('div');
mount.id = MOUNT_ID;
meta.parentNode.insertBefore(mount, meta.nextSibling);
return mount;
}
const below = document.querySelector('#below');
if (below) {
mount = document.createElement('div');
mount.id = MOUNT_ID;
below.append(mount);
return mount;
}
return null;
};
const waitForMount = async (maxAttempts = 40) => {
for (let i = 0; i < maxAttempts; i++) {
const m = getMount();
if (m) return m;
await new Promise(r => setTimeout(r, 250));
}
return null;
};
const renderComments = (children, postAuthor) => {
@@ -258,7 +293,7 @@ const renderComments = (children, postAuthor) => {
for (const child of children) {
if (child.kind === 'more') {
const { count, children: moreIds, id, parent_id } = child.data;
const { count, children: moreIds } = child.data;
if (!moreIds?.length) continue;
const btn = document.createElement('button');
btn.className = 'os-load-more';
@@ -273,8 +308,7 @@ const renderComments = (children, postAuthor) => {
if (!res.ok) throw new Error(`HTTP ${res.status}`);
const json = await res.json();
const items = json?.json?.data?.things?.map(t => t.data) || [];
const rendered = renderFlatComments(items, postAuthor);
btn.replaceWith(rendered);
btn.replaceWith(renderFlatComments(items, postAuthor));
} catch {
btn.textContent = 'Failed to load comments';
}
@@ -384,10 +418,7 @@ const loadPostComments = async (post, postContainer) => {
}
};
const renderThread = post => {
const mount = getMount();
if (!mount) return;
const renderThread = (post, mount) => {
let contentArea = mount.querySelector('.os-content-area');
if (!contentArea) {
contentArea = document.createElement('div');
@@ -422,22 +453,16 @@ const renderThread = post => {
loadPostComments(post, commentsArea);
};
const renderTabs = posts => {
const mount = getMount();
if (!mount) return;
const renderTabs = (posts, mount) => {
mount.innerHTML = '';
const officialSub = getOfficialSub();
if (officialSub) {
posts.sort((a, b) => (a.subreddit.toLowerCase() === officialSub ? -1 : b.subreddit.toLowerCase() === officialSub ? 1 : 0));
}
let tabs = mount.querySelector('.os-tabs');
if (!tabs) {
tabs = document.createElement('div');
const tabs = document.createElement('div');
tabs.className = 'os-tabs';
mount.prepend(tabs);
}
tabs.innerHTML = '';
mount.append(tabs);
const activePost = posts.find(p => p.name === activePostId) || posts[0];
activePostId = activePost.name;
@@ -465,22 +490,24 @@ const renderTabs = posts => {
activePostId = post.name;
tabs.querySelectorAll('.os-tab').forEach(t => t.classList.remove('os-active'));
tab.classList.add('os-active');
renderThread(post);
renderThread(post, mount);
};
tabs.append(tab);
});
renderThread(activePost);
renderThread(activePost, mount);
};
const updateForVideo = async videoId => {
ensureStyles();
const mount = getMount();
if (!mount) return;
mount.innerHTML = '<div class="os-status">Searching Reddit for discussion threads...</div>';
cachedPosts = [];
activePostId = null;
const initialMount = getMount();
if (initialMount) {
initialMount.innerHTML = '<div class="os-status">Searching Reddit for discussion threads...</div>';
}
try {
const res = await OpenScript.fetch(
@@ -490,20 +517,41 @@ const updateForVideo = async videoId => {
const data = await res.json();
const posts = data?.data?.children?.map(c => c.data) || [];
if (videoId !== currentVideoId) return;
const mount = await waitForMount();
if (!mount || videoId !== currentVideoId) return;
if (!posts.length) {
mount.innerHTML = '';
mount.innerHTML = '<div class="os-status">No Reddit discussions found for this video.</div>';
return;
}
cachedPosts = posts;
renderTabs(posts);
renderTabs(posts, mount);
} catch (err) {
mount.innerHTML = `<div class="os-status">Could not search Reddit (${err.message}).</div>`;
const mount = await waitForMount();
if (mount && videoId === currentVideoId) {
mount.innerHTML = `
<div class="os-status">
Could not search Reddit (${err.message}).
<button class="os-retry-btn">Retry</button>
</div>
`;
mount.querySelector('.os-retry-btn')?.addEventListener('click', () => updateForVideo(videoId));
}
}
};
const getVideoId = () => {
const search = new URLSearchParams(location.search);
if (search.get('v')) return search.get('v');
const match = location.pathname.match(/\/shorts\/([a-zA-Z0-9_-]+)/);
return match ? match[1] : null;
};
const check = () => {
const id = new URLSearchParams(location.search).get('v');
const id = getVideoId();
if (!id) {
currentVideoId = null;
const mount = document.getElementById(MOUNT_ID);
@@ -512,15 +560,15 @@ const check = () => {
}
if (id === currentVideoId) {
if (cachedPosts.length && !document.getElementById(MOUNT_ID)?.hasChildNodes()) {
renderTabs(cachedPosts);
const mount = getMount();
if (mount) renderTabs(cachedPosts, mount);
}
return;
}
currentVideoId = id;
activePostId = null;
updateForVideo(id);
};
document.addEventListener('yt-navigate-finish', check);
setInterval(check, 1200);
setInterval(check, 1000);
check();