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Load YouTube thumbnails for demo representations #167

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Initial plan
Copilot Apr 1, 2026
deee272
fix: load YouTube thumbnails for demo representations
Copilot Apr 1, 2026
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33 changes: 29 additions & 4 deletions codewit/client/src/components/demos/Demos.tsx
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Original file line number Diff line number Diff line change
@@ -1,4 +1,5 @@
// codewit/client/src/components/demos/Demos.tsx
import { useState } from "react";
import { Link } from "react-router-dom";
import LoadingIcons from "../loading/LoadingIcon";
import { TrashIcon, PencilSquareIcon, VideoCameraIcon } from "@heroicons/react/24/solid";
Expand All @@ -7,13 +8,26 @@ interface VideoProps {
title: string;
amountExercises: number;
uid: number;
youtube_id: string;
youtube_thumbnail: string;
isDeleting?: boolean;
handleEdit: () => void;
handleDelete: () => void;
}

const Video = ({ title, uid, amountExercises, isDeleting, handleEdit, handleDelete }: VideoProps): JSX.Element => {

const Video = ({ title, uid, amountExercises, youtube_id, youtube_thumbnail, isDeleting, handleEdit, handleDelete }: VideoProps): JSX.Element => {
const fallback_src = `https://i.ytimg.com/vi/${youtube_id}/hqdefault.jpg`;
const [imgSrc, setImgSrc] = useState(youtube_thumbnail || fallback_src);
const [imgFailed, setImgFailed] = useState(false);

const handleImgError = () => {
if (imgSrc !== fallback_src) {
setImgSrc(fallback_src);
} else {
setImgFailed(true);
}
};

const handleMenuClick = (e: React.MouseEvent<HTMLButtonElement>, action: string) => {
e.stopPropagation();
if (action === 'edit') {
Expand All @@ -26,8 +40,19 @@ const Video = ({ title, uid, amountExercises, isDeleting, handleEdit, handleDele
return (
<div className="flex flex-col h-full bg-gray-800 overflow-hidden rounded-lg transition-transform duration-150 ease-in-out hover:scale-102 cursor-pointer w-full">
<Link to={`/read/${uid}`} className="flex flex-grow w-full">
<div className="flex-shrink-0 flex justify-center items-center bg-gray-900 w-full h-full ">
<VideoCameraIcon fill="#3da2b4" className="w-12 h-12 opacity-50" />
<div className="relative flex-shrink-0 w-full h-full min-h-[8rem] bg-gray-900">
{imgFailed ? (
<div className="w-full h-full flex justify-center items-center">
<VideoCameraIcon fill="#3da2b4" className="w-12 h-12 opacity-50" />
</div>
) : (
<img
src={imgSrc}
alt={title}
className="w-full h-full object-cover"
onError={handleImgError}
/>
)}
</div>
</Link>
<div className = "flex flex-row justify-center items-center">
Expand Down
93 changes: 63 additions & 30 deletions codewit/client/src/pages/Read.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@ import {
PlayIcon,
CheckCircleIcon,
LinkIcon,
VideoCameraIcon,
} from '@heroicons/react/24/solid';
import { Editor } from '@monaco-editor/react';
import { useForm } from "@tanstack/react-form";
Expand Down Expand Up @@ -217,6 +218,67 @@ function LeftPanel({info, module_id, course_id}: LeftPanelProps) {
</Resizable>;
}

interface RelatedDemoCardProps {
demo: RelatedDemo,
link_path: string,
}

function RelatedDemoCard({demo, link_path}: RelatedDemoCardProps) {
const fallback_src = `https://i.ytimg.com/vi/${demo.youtube_id}/hqdefault.jpg`;
const [imgSrc, setImgSrc] = useState(demo.youtube_thumbnail || fallback_src);
const [imgFailed, setImgFailed] = useState(false);

const handleImgError = () => {
if (imgSrc !== fallback_src) {
setImgSrc(fallback_src);
} else {
setImgFailed(true);
}
};

let status = null;

if (demo.completion !== 0 && demo.completion !== 1) {
status = `${(demo.completion * 100).toFixed(0)}%`;
}

return <Link
key={demo.uid}
to={link_path}
className="flex-shrink-0 w-48 rounded-md overflow-hidden hover:shadow-lg transition-all duration-200 group/link border border-gray-800 hover:border-accent-500/50"
>
<div className="relative w-full h-28 overflow-hidden">
{imgFailed ? (
<div className="w-full h-full bg-gray-900 flex justify-center items-center">
<VideoCameraIcon fill="#3da2b4" className="w-12 h-12 opacity-50" />
</div>
) : (
<img
src={imgSrc}
alt={demo.title}
className="w-full h-full object-cover"
onError={handleImgError}
/>
)}
<div className="absolute inset-0 bg-black bg-opacity-40 flex items-center justify-center group-hover/link:bg-opacity-20 transition-all">
{demo.completion === 1 ?
<CheckCircleIcon className="h-8 w-8 text-green-500"/>
:
<div className="flex flex-row items-center gap-2">
{status}
<PlayIcon className="h-8 w-8 text-white" />
</div>
}
</div>
</div>
<div className="p-2">
<h3 className="text-sm font-medium text-white group-hover/link:text-accent-400 transition-colors truncate">
{demo.title}
</h3>
</div>
</Link>;
}

interface RelatedDemosProps {
demos: RelatedDemo[] | null,
course_id?: string | null,
Expand Down Expand Up @@ -246,36 +308,7 @@ function RelatedDemos({demos, course_id, module_id}: RelatedDemosProps) {
link_path += `module_id=${module_id}`;
}

let status = null;

if (demo.completion !== 0 && demo.completion !== 1) {
status = `${(demo.completion * 100).toFixed(0)}%`;
}

return <Link
key={demo.uid}
to={link_path}
className="flex-shrink-0 w-48 rounded-md overflow-hidden hover:shadow-lg transition-all duration-200 group/link border border-gray-800 hover:border-accent-500/50"
>
<div className="relative w-full h-28 overflow-hidden">
<img src={demo.youtube_thumbnail} alt={demo.title} className="w-full h-full object-cover"/>
<div className="absolute inset-0 bg-black bg-opacity-40 flex items-center justify-center group-hover/link:bg-opacity-20 transition-all">
{demo.completion === 1 ?
<CheckCircleIcon className="h-8 w-8 text-green-500"/>
:
<div className="flex flex-row items-center gap-2">
{status}
<PlayIcon className="h-8 w-8 text-white" />
</div>
}
</div>
</div>
<div className="p-2">
<h3 className="text-sm font-medium text-white group-hover/link:text-accent-400 transition-colors truncate">
{demo.title}
</h3>
</div>
</Link>
return <RelatedDemoCard key={demo.uid} demo={demo} link_path={link_path} />;
})}
</div>
</div>
Expand Down
37 changes: 28 additions & 9 deletions codewit/client/src/pages/course/StudentView.tsx
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
import { useState } from "react";
import { Link } from "react-router-dom";
import { PlayIcon, CheckCircleIcon } from "@heroicons/react/24/solid";
import { PlayIcon, CheckCircleIcon, VideoCameraIcon } from "@heroicons/react/24/solid";

import { StudentCourse, StudentModule, StudentDemo } from "@codewit/interfaces";
import { cn } from "../../utils/styles";
Expand Down Expand Up @@ -158,6 +158,18 @@ interface CourseModuleDemoProps {
}

function CourseModuleDemo({course_id, module_id, demo}: CourseModuleDemoProps) {
const fallback_src = `https://i.ytimg.com/vi/${demo.youtube_id}/hqdefault.jpg`;
const [imgSrc, setImgSrc] = useState(demo.youtube_thumbnail || fallback_src);
const [imgFailed, setImgFailed] = useState(false);

const handleImgError = () => {
if (imgSrc !== fallback_src) {
setImgSrc(fallback_src);
} else {
setImgFailed(true);
}
};

let status = null;

if (demo.completion !== 0 && demo.completion !== 1) {
Expand All @@ -166,22 +178,29 @@ function CourseModuleDemo({course_id, module_id, demo}: CourseModuleDemoProps) {

return <div className="relative overflow-hidden w-48">
<div className="relative h-32">
<img
src={demo.youtube_thumbnail}
alt={demo.title}
className="w-full h-full object-cover rounded-xl"
/>
<div className="absolute inset-0 bg-black bg-opacity-80 flex rounded-xl items-center justify-center group hover:bg-opacity-30">
{imgFailed ? (
<div className="w-full h-full bg-gray-900 rounded-xl flex justify-center items-center">
<VideoCameraIcon fill="#3da2b4" className="w-12 h-12 opacity-50" />
</div>
) : (
<img
src={imgSrc}
alt={demo.title}
className="w-full h-full object-cover rounded-xl"
onError={handleImgError}
/>
)}
<div className="absolute inset-0 bg-black bg-opacity-40 flex rounded-xl items-center justify-center group hover:bg-opacity-20">
<Link
to={`/read/${demo.uid}?course_id=${course_id}&module_id=${module_id}`}
className="text-2xl opacity-70 group-hover:opacity-100"
>
{demo.completion === 1 ?
<CheckCircleIcon className="h-8 w-8 text-green-500 opacity-40 group-hover:opacity-100"/>
<CheckCircleIcon className="h-8 w-8 text-green-500 opacity-70 group-hover:opacity-100"/>
:
<div className="flex flex-row items-center gap-2 ">
{status}
<PlayIcon className="h-8 w-8 text-white opacity-40 group-hover:opacity-100"/>
<PlayIcon className="h-8 w-8 text-white opacity-70 group-hover:opacity-100"/>
</div>
}
</Link>
Expand Down
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