From 21b427f508578323969e0434661aa1e533cf7105 Mon Sep 17 00:00:00 2001
From: Sand Merchant <sandmerch@proton.me>
Date: Fri, 11 Aug 2023 21:50:50 +0000
Subject: [PATCH] added rudimentry enbeded video support

---
 src/lib/Video.svelte                          | 72 +++++++++++++++++++
 src/lib/feeds/posts/PostContent.svelte        | 18 ++++-
 src/lib/feeds/posts/post-utils.ts             | 23 +++++-
 .../posts/previews/CardPostPreview.svelte     |  7 ++
 .../feeds/posts/previews/CardPostVideo.svelte | 48 +++++++++++++
 5 files changed, 164 insertions(+), 4 deletions(-)
 create mode 100644 src/lib/Video.svelte
 create mode 100644 src/lib/feeds/posts/previews/CardPostVideo.svelte

diff --git a/src/lib/Video.svelte b/src/lib/Video.svelte
new file mode 100644
index 0000000..a420623
--- /dev/null
+++ b/src/lib/Video.svelte
@@ -0,0 +1,72 @@
+<style lang="scss">
+	video {
+		max-width: 100%;
+		max-height: 95vh;
+	}
+	.video-mode-full:not(.video-full) video {
+		max-width: 20rem;
+	}
+	.error {
+		background: var(--sx-gray-transparent);
+		height: 100%;
+		width: 100%;
+	}
+	.show-nsfw {
+		background: var(--sx-red-transparent-faint);
+		color: var(--sx-red-400);
+		margin: 0;
+	}
+	.video-mode-thumbnail.blur:not(:hover) video {
+		filter: blur(10px);
+	}
+	video {
+		width: 100%;
+	}
+</style>
+
+{#if error}
+	<div
+		class="error align-items-center justify-content-center f-row"
+		title="Video load failed"
+		style={loadingHeight ? `height: ${loadingHeight};` : ''}
+	>
+		<Icon icon="bug" />
+	</div>
+{:else if nsfw && $nsfwImageHandling === 'HIDE' && !showAnyway}
+	<button class="img show-nsfw" on:click|stopPropagation={() => (showAnyway = true)}>Show NSFW</button>
+{:else if valid}
+	<!-- svelte-ignore a11y-media-has-caption -->
+	<video
+		class="video-mode-{mode} {full ? 'video-full' : ''}"
+		class:blur={nsfw && $nsfwImageHandling === 'BLUR'}
+		on:error={videoLoadError}
+		controls
+	>
+		<source src={src} />
+		<a href="{link}">{linkTitle}</a>
+	</video>
+{/if}
+
+<script lang="ts">
+	import { Icon } from 'sheodox-ui';
+	import { getSettingsContext } from './settings-context';
+	export let src: string;
+	export let link: string;
+	export let linkTitle: string;
+	export let mode: 'thumbnail' | 'full' = 'full';
+
+	export let full = mode === 'full';
+	export let nsfw = false;
+	// if the video is loading for the first time, this is a placeholder size we could use
+	export let loadingHeight: string | undefined = undefined;
+	const { nsfwImageHandling } = getSettingsContext();
+
+	$: valid = src.startsWith('https://') || src.startsWith('http://');
+
+	let error = false,
+		showAnyway = false;
+
+	function videoLoadError() {
+		error = true;
+	}
+</script>
diff --git a/src/lib/feeds/posts/PostContent.svelte b/src/lib/feeds/posts/PostContent.svelte
index 8695d1c..a3d4711 100644
--- a/src/lib/feeds/posts/PostContent.svelte
+++ b/src/lib/feeds/posts/PostContent.svelte
@@ -7,7 +7,7 @@
 
 <div class="embed-content f-column gap-2">
 	<PostEmbed {postView} />
-	{#if hasBody}
+	{#if postAssertions.has.body}
 		<PostBody {postView} />
 	{/if}
 	{#if probablyImage && postView.post.url}
@@ -17,17 +17,29 @@
 		in the feed height, so images can't be lazy -->
 		<Image src={postView.post.url} lazy={false} />
 	{/if}
+	{#if postAssertions.has.video}
+		<!-- not passing nsfw, it's handled by not showing the post contents
+		by default when necessary, or the user has to click twice to see.
+		also don't lazy load, as if it's expanded in the feed it has repercussions
+		in the feed height, so images can't be lazy -->
+		<Video
+			src={postAssertions.videoSrc || ''}
+			linkTitle={postView.post.embed_title || postView.post.name}
+			link={postView.post.url || ''}
+		/>
+	{/if}
 </div>
 
 <script lang="ts">
 	import type { PostView } from 'lemmy-js-client';
 	import PostBody from './previews/PostBody.svelte';
 	import Image from '$lib/Image.svelte';
+	import Video from '$lib/Video.svelte';
 	import PostEmbed from './PostEmbed.svelte';
-	import { hasImageExtension } from './post-utils';
+	import { hasImageExtension, makePostAssertions } from './post-utils';
 
 	export let postView: PostView;
 
 	$: probablyImage = hasImageExtension(postView.post.url || '');
-	$: hasBody = !!postView.post.body;
+	$: postAssertions = makePostAssertions(postView);
 </script>
diff --git a/src/lib/feeds/posts/post-utils.ts b/src/lib/feeds/posts/post-utils.ts
index 6a84322..ea030e5 100644
--- a/src/lib/feeds/posts/post-utils.ts
+++ b/src/lib/feeds/posts/post-utils.ts
@@ -36,11 +36,26 @@ export function hasImageExtension(url?: string) {
 	}
 }
 
+export function hasVideoExtension(url?: string) {
+	if (!isValidUrl(url)) {
+		return false;
+	}
+
+	try {
+		const u = new URL(url);
+		return /\.(mp4|mpv|mov)$/.test(u.pathname);
+	} catch (e) {
+		return false;
+	}
+}
+
 export interface PostAssertions {
 	imageSrc?: string;
+	videoSrc?: string;
 	// existence of certain types of embedded content
 	has: {
 		image: boolean;
+		video: boolean;
 		body: boolean;
 		embed: boolean;
 		any: boolean;
@@ -53,19 +68,25 @@ export interface PostAssertions {
 
 export function makePostAssertions(pv: PostView, myUserId?: number): PostAssertions {
 	let imageSrc = pv.post.thumbnail_url;
+	let videoSrc = pv.post.embed_video_url;
 
 	if (!imageSrc && hasImageExtension(pv.post.url)) {
 		imageSrc = pv.post.url;
 	}
+	if (!videoSrc && hasVideoExtension(pv.post.url)) {
+		videoSrc = pv.post.url;
+	}
 
 	const hasParts = {
 		image: !!imageSrc,
+		video: !!videoSrc,
 		body: !!pv.post.body?.trim(),
-		embed: !!pv.post.embed_title
+		embed: !!(pv.post.embed_title || videoSrc)
 	};
 
 	return {
 		imageSrc,
+		videoSrc,
 		// assertions about embedded contents
 		has: {
 			...hasParts,
diff --git a/src/lib/feeds/posts/previews/CardPostPreview.svelte b/src/lib/feeds/posts/previews/CardPostPreview.svelte
index 6e588ae..057a58d 100644
--- a/src/lib/feeds/posts/previews/CardPostPreview.svelte
+++ b/src/lib/feeds/posts/previews/CardPostPreview.svelte
@@ -50,6 +50,12 @@
 				</div>
 			{/if}
 
+			{#if postAssertions.has.video}
+				<div class="card-image">
+					<CardPostVideo {postView} />
+				</div>
+			{/if}
+
 			{#if postView.post.embed_description || (postView.post.embed_title && mode === 'list')}
 				<div class="px-2">
 					<PostEmbed {postView} reflectRead preview />
@@ -80,6 +86,7 @@
 	import { Stack } from 'sheodox-ui';
 	import PostTitle from '../PostTitle.svelte';
 	import CardPostImage from './CardPostImage.svelte';
+	import CardPostVideo from './CardPostVideo.svelte';
 	import PostTime from '../PostTime.svelte';
 	import { createEventDispatcher } from 'svelte';
 	import type { PostView } from 'lemmy-js-client';
diff --git a/src/lib/feeds/posts/previews/CardPostVideo.svelte b/src/lib/feeds/posts/previews/CardPostVideo.svelte
new file mode 100644
index 0000000..4d609c5
--- /dev/null
+++ b/src/lib/feeds/posts/previews/CardPostVideo.svelte
@@ -0,0 +1,48 @@
+<style lang="scss">
+	.card-video-placeholder {
+		height: 20rem;
+		width: 100%;
+		display: flex;
+		justify-content: center;
+		align-items: center;
+	}
+	.nsfw {
+		background: var(--sx-red-transparent-faint);
+		button {
+			height: 100%;
+			width: 100%;
+			margin: 0;
+		}
+	}
+</style>
+
+<div class="card-video" class:nsfw={postView.post.nsfw}>
+	{#if postView.post.nsfw && $nsfwImageHandling === 'HIDE' && !showAnyway}
+		<div class="card-video-placeholder">
+			<button class="tertiary" on:click|stopPropagation={() => (showAnyway = true)}> Show NSFW </button>
+		</div>
+	{:else if postAssertions.has.video}
+		<!-- not passing nsfw, this component handles it otherwise we'd have nested buttons -->
+		<Video
+			src={postAssertions.videoSrc || ''}
+			full
+			loadingHeight="20rem"
+			linkTitle={postView.post.embed_title || postView.post.name}
+			link={postView.post.url || ''}
+		/>
+	{/if}
+</div>
+
+<script lang="ts">
+	import type { PostView } from 'lemmy-js-client';
+	import Video from '$lib/Video.svelte';
+	import { getSettingsContext } from '$lib/settings-context';
+	import { makePostAssertions } from '../post-utils';
+
+	export let postView: PostView;
+
+	const { nsfwImageHandling } = getSettingsContext();
+
+	let showAnyway = false;
+	$: postAssertions = makePostAssertions(postView);
+</script>