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Implement infinite scroll for learning paths #382

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Merged
Aditya948351 merged 2 commits into from
May 31, 2026
Merged

Implement infinite scroll for learning paths #382

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d5bb6eb
Implement infinite scroll for learning paths
nancy-verma780 May 29, 2026
f38ebd7
Update LearningPaths.tsx
nancy-verma780 May 29, 2026
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43 changes: 38 additions & 5 deletions src/components/home/LearningPaths.tsx
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
"use client";

import { useState } from 'react';
import { useState, useEffect, useRef } from 'react';
import { Clock, BookOpen, ArrowRight, Bell } from 'lucide-react';
import Button from '../ui/Button';
import ComingSoonBadge from '../features/ComingSoonBadge';
Expand Down Expand Up @@ -65,6 +65,30 @@ export default function LearningPaths() {
const [selectedPath, setSelectedPath] = useState<string>("");
const [email, setEmail] = useState("");
const [isSubmitted, setIsSubmitted] = useState(false);

// Horizontal Infinite Scroll State Configuration
const [visibleCount, setVisibleCount] = useState(2);
const observerAnchorRef = useRef<HTMLDivElement | null>(null);

useEffect(() => {
const targetAnchor = observerAnchorRef.current;
if (!targetAnchor) return;

const scrollObserver = new IntersectionObserver((intersectEntries) => {
if (intersectEntries[0].isIntersecting && visibleCount < paths.length) {
// Smoothly load next horizontal elements block
setVisibleCount((prevValue) => Math.min(prevValue + 1, paths.length));
}
}, {
root: targetAnchor.parentElement, // Tracks scrolling within the carousel container box
threshold: 0.1
});

scrollObserver.observe(targetAnchor);
return () => {
if (targetAnchor) scrollObserver.unobserve(targetAnchor);
};
}, [visibleCount]);

const handlePathClick = (path: Path) => {
if (path.status === 'coming-soon') {
Expand All @@ -77,7 +101,6 @@ export default function LearningPaths() {

const handleNotifySubmit = (e: React.FormEvent) => {
e.preventDefault();
// Simulate API call
setTimeout(() => {
setIsSubmitted(true);
}, 1000);
Expand All @@ -92,12 +115,12 @@ export default function LearningPaths() {
</p>
</div>

<div className={styles.carousel}>
{paths.map((path, index) => (
<div className={styles.carousel} style={{ display: 'flex', overflowX: 'auto', gap: '16px', alignItems: 'center' }}>
{paths.slice(0, visibleCount).map((path, index) => (
<div
key={index}
className={`${styles.pathCard} ${path.status === 'coming-soon' ? styles.comingSoon : ''}`}
style={{ background: path.color }}
style={{ background: path.color, flexShrink: 0 }}
onClick={() => handlePathClick(path)}
>
{path.status === 'coming-soon' && <ComingSoonBadge />}
Expand Down Expand Up @@ -145,6 +168,15 @@ export default function LearningPaths() {
</div>
</div>
))}

{/* Horizontal Interceptor Trigger Target Element (placed at the right end inside the slider container) */}
<div ref={observerAnchorRef} style={{ width: '40px', height: '100%', display: 'flex', alignItems: 'center', justifyContent: 'center', flexShrink: 0 }}>
{visibleCount < paths.length ? (
<span style={{ fontSize: '20px', color: '#6B7280' }}>🔄</span>
) : (
<span style={{ fontSize: '20px', color: '#10B981' }}>🎉</span>
)}
</div>
</div>

{showNotifyModal && (
Expand Down Expand Up @@ -185,3 +217,4 @@ export default function LearningPaths() {
</section>
);
}