From 2b141b82ee1f9ab06aceec8ad00884090554b42a Mon Sep 17 00:00:00 2001
From: WardPearce <wardpearce@pm.me>
Date: Sat, 7 Mar 2026 23:59:03 +1300
Subject: [PATCH] Implemented channel avatars on feed

---
 materialious/src/lib/api/invidious/channel.ts |  9 +-
 materialious/src/lib/api/invidious/video.ts   | 10 ++-
 materialious/src/lib/api/youtubejs/channel.ts |  2 +
 materialious/src/lib/api/youtubejs/video.ts   |  3 +
 .../thumbnail/VideoThumbnail.svelte           | 83 ++++++++++++-------
 materialious/src/lib/dexie.ts                 | 12 ++-
 materialious/src/lib/thumbnail.ts             | 27 ++++++
 7 files changed, 112 insertions(+), 34 deletions(-)
 create mode 100644 materialious/src/lib/thumbnail.ts

diff --git a/materialious/src/lib/api/invidious/channel.ts b/materialious/src/lib/api/invidious/channel.ts
index 98212cb3..a49e4e84 100644
--- a/materialious/src/lib/api/invidious/channel.ts
+++ b/materialious/src/lib/api/invidious/channel.ts
@@ -1,3 +1,4 @@
+import { associateAvatar } from '$lib/thumbnail';
 import type { ChannelContent, ChannelOptions, ChannelPage } from '../model';
 import { buildPath, fetchErrorHandle } from './request';
 
@@ -8,7 +9,13 @@ export async function getChannelInvidious(
 	const resp = await fetchErrorHandle(
 		await fetch(buildPath(`channels/${channelId}`), fetchOptions)
 	);
-	return await resp.json();
+	const respJson = await resp.json();
+
+	if (resp.ok) {
+		associateAvatar(channelId, respJson.authorBanners);
+	}
+
+	return respJson;
 }
 
 export async function getChannelContentInvidious(
diff --git a/materialious/src/lib/api/invidious/video.ts b/materialious/src/lib/api/invidious/video.ts
index 0bd15d5b..bfd3fd23 100644
--- a/materialious/src/lib/api/invidious/video.ts
+++ b/materialious/src/lib/api/invidious/video.ts
@@ -4,6 +4,7 @@ import { buildPath, fetchErrorHandle } from './request';
 import { getVideoYTjs } from '../youtubejs/video';
 import { playerYouTubeJsFallback } from '$lib/store';
 import { isUnrestrictedPlatform } from '$lib/misc';
+import { associateAvatar } from '$lib/thumbnail';
 
 export async function getVideoInvidious(
 	videoId: string,
@@ -20,5 +21,12 @@ export async function getVideoInvidious(
 	} else {
 		await fetchErrorHandle(resp);
 	}
-	return await resp.json();
+
+	const respJson = await resp.json();
+
+	if (resp.ok) {
+		associateAvatar(respJson.authorId, respJson.authorThumbnails);
+	}
+
+	return respJson;
 }
diff --git a/materialious/src/lib/api/youtubejs/channel.ts b/materialious/src/lib/api/youtubejs/channel.ts
index fd77bc6a..82240788 100644
--- a/materialious/src/lib/api/youtubejs/channel.ts
+++ b/materialious/src/lib/api/youtubejs/channel.ts
@@ -9,6 +9,7 @@ import type {
 	Video
 } from '../model';
 import { invidiousItemSchema } from './schema';
+import { associateAvatar } from '$lib/thumbnail';
 
 export async function getChannelYTjs(channelId: string): Promise<ChannelPage> {
 	const innertube = await getInnertube();
@@ -23,6 +24,7 @@ export async function getChannelYTjs(channelId: string): Promise<ChannelPage> {
 		innerResults.header.content?.is(YTNodes.PageHeaderView)
 	) {
 		authorBanners = innerResults.header.content.banner?.image ?? [];
+		associateAvatar(channelId, authorBanners);
 	}
 
 	const description = innerResults.metadata.description ?? '';
diff --git a/materialious/src/lib/api/youtubejs/video.ts b/materialious/src/lib/api/youtubejs/video.ts
index f9d89d3e..1c245cf1 100644
--- a/materialious/src/lib/api/youtubejs/video.ts
+++ b/materialious/src/lib/api/youtubejs/video.ts
@@ -17,6 +17,7 @@ import { Utils, YT, YTNodes, Platform, type IGetChallengeResponse } from 'youtub
 import { getInnertube } from '.';
 import { isUnrestrictedPlatform } from '$lib/misc';
 import { webPoTokenMinter } from '$lib/web/youtube/minter';
+import { associateAvatar } from '$lib/thumbnail';
 
 Platform.shim.eval = async (
 	data: Types.BuildScriptResult,
@@ -149,6 +150,8 @@ export async function getVideoYTjs(videoId: string): Promise<VideoPlay> {
 	if (video.basic_info.channel_id) {
 		const channel = await innertube.getChannel(video.basic_info.channel_id);
 		authorThumbnails = channel.metadata.avatar as Image[];
+
+		associateAvatar(video.basic_info.channel_id, authorThumbnails);
 	} else {
 		authorThumbnails = [];
 	}
diff --git a/materialious/src/lib/components/thumbnail/VideoThumbnail.svelte b/materialious/src/lib/components/thumbnail/VideoThumbnail.svelte
index f3996605..d00a75a1 100644
--- a/materialious/src/lib/components/thumbnail/VideoThumbnail.svelte
+++ b/materialious/src/lib/components/thumbnail/VideoThumbnail.svelte
@@ -19,6 +19,8 @@
 	import { queueGetWatchHistory } from '$lib/api/historyPool';
 	import { page } from '$app/state';
 	import { getDeArrow, getThumbnailDeArrow } from '$lib/api/dearrow';
+	import { avatarFromChannelId } from '$lib/thumbnail';
+	import { mergeAttrs } from 'melt';
 
 	interface Props {
 		video: VideoBase | Video | Notification | PlaylistPageVideo | VideoWatchHistory;
@@ -70,6 +72,7 @@
 	}
 
 	let thumbnailHeight = $state(0);
+	let thumbnailHTMLElement: HTMLImageElement | undefined = $state();
 
 	const thumbnail = new Avatar({
 		src: () => thumbnailSrc,
@@ -78,7 +81,10 @@
 		}
 	});
 
-	let thumbnailHTMLElement: HTMLImageElement | undefined = $state();
+	let authorAvatarSrc = $state('');
+	const authorAvatar = new Avatar({
+		src: () => authorAvatarSrc
+	});
 
 	let startedSideways = sideways === true;
 	function disableSideways() {
@@ -90,6 +96,12 @@
 	}
 
 	onMount(async () => {
+		if ('authorId' in video) {
+			avatarFromChannelId(video.authorId).then((url) => {
+				if (url) authorAvatarSrc = url;
+			});
+		}
+
 		// Check if sideways should be enabled or disabled.
 		disableSideways();
 
@@ -181,39 +193,50 @@
 				<span class="bold">{letterCase(video.title.trimEnd())}</span>
 			</a>
 
-			<div>
-				{#if 'authorId' in video && video.authorId}
-					<a
-						tabindex="-1"
-						class:author={!sideways}
-						href={resolve(`/channel/[authorId]`, { authorId: video.authorId })}
-						data-sveltekit-preload-data="off"
-						>{video.author}
-					</a>
-				{:else}
-					<p>{video.author}</p>
+			<nav>
+				{#if !sideways}
+					<img class="circle small" {...authorAvatar.image} alt="Channel profile" />
+					<button
+						class="secondary-container"
+						{...mergeAttrs(authorAvatar.fallback, {
+							style: 'text-transform: uppercase;border-radius: 2.5rem !important;'
+						})}>{video.author[0]}</button
+					>
 				{/if}
+				<div>
+					{#if 'authorId' in video && video.authorId}
+						<a
+							tabindex="-1"
+							class:author={!sideways}
+							href={resolve(`/channel/[authorId]`, { authorId: video.authorId })}
+							data-sveltekit-preload-data="off"
+							>{video.author}
+						</a>
+					{:else}
+						<p>{video.author}</p>
+					{/if}
 
-				{#if 'promotedBy' in video && video.promotedBy === 'favourited'}
-					<i>star</i>
-				{/if}
+					{#if 'promotedBy' in video && video.promotedBy === 'favourited'}
+						<i>star</i>
+					{/if}
 
-				{#if !('publishedText' in video) && 'viewCountText' in video}
-					•
-					{video.viewCountText ?? cleanNumber(video.viewCount ?? 0)}
-					{$_('views')}
-				{/if}
-
-				{#if 'published' in video}
-					<div class="max">
-						{video.viewCountText ?? cleanNumber(video.viewCount ?? 0)}
+					{#if !('publishedText' in video) && 'viewCountText' in video}
 						•
-						{video.published && video.published !== 0
-							? relativeTimestamp(video.published * 1000, false)
-							: video.publishedText}
-					</div>
-				{/if}
-			</div>
+						{video.viewCountText ?? cleanNumber(video.viewCount ?? 0)}
+						{$_('views')}
+					{/if}
+
+					{#if 'published' in video}
+						<div>
+							{video.viewCountText ?? cleanNumber(video.viewCount ?? 0)}
+							•
+							{video.published && video.published !== 0
+								? relativeTimestamp(video.published * 1000, false)
+								: video.publishedText}
+						</div>
+					{/if}
+				</div>
+			</nav>
 		</div>
 	</div>
 </div>
diff --git a/materialious/src/lib/dexie.ts b/materialious/src/lib/dexie.ts
index 982d4714..80851826 100644
--- a/materialious/src/lib/dexie.ts
+++ b/materialious/src/lib/dexie.ts
@@ -13,19 +13,27 @@ export interface ChannelSubscriptions {
 	lastRSSFetch: Date;
 }
 
+export interface ChannelAvatars {
+	channelId: string;
+	avatarUrl: string;
+	updated: Date;
+}
+
 export class MaterialiousDb extends Dexie {
 	favouriteChannels!: Table<FavouriteChannels>;
 	channelSubscriptions!: Table<ChannelSubscriptions>;
 	subscriptionFeed!: Table<Video>;
 	watchHistory!: Table<VideoWatchHistory>;
+	channelAvatars!: Table<ChannelAvatars>;
 
 	constructor() {
 		super('materialious');
-		this.version(3).stores({
+		this.version(4).stores({
 			favouriteChannels: 'channelId',
 			channelSubscriptions: 'channelId',
 			subscriptionFeed: 'videoId, authorId, published',
-			watchHistory: 'videoId'
+			watchHistory: 'videoId',
+			channelAvatars: 'channelId'
 		});
 	}
 }
diff --git a/materialious/src/lib/thumbnail.ts b/materialious/src/lib/thumbnail.ts
new file mode 100644
index 00000000..588aa16a
--- /dev/null
+++ b/materialious/src/lib/thumbnail.ts
@@ -0,0 +1,27 @@
+import type { Image } from './api/model';
+import { localDb } from './dexie';
+import { getBestThumbnail } from './images';
+
+export async function associateAvatar(channelId: string, avatars: Image[]) {
+	if (avatars.length === 0) return;
+
+	await localDb.channelAvatars.put(
+		{
+			channelId: channelId,
+			avatarUrl: getBestThumbnail(avatars),
+			updated: new Date()
+		},
+		{ channelId: channelId }
+	);
+
+	const oneMonthAgo = new Date();
+	oneMonthAgo.setMonth(oneMonthAgo.getMonth() - 1);
+	localDb.channelAvatars.where('updated').below(oneMonthAgo).delete();
+}
+
+export async function avatarFromChannelId(channelId: string): Promise<void | string> {
+	const result = await localDb.channelAvatars.get({ channelId });
+	if (result) {
+		return result.avatarUrl;
+	}
+}