Press n or j to go to the next uncovered block, b, p or k for the previous block.
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import { useParams, useSearchParams } from 'react-router-dom';
import type { Item } from '../types';
import FeedItem from './FeedItem';
import './FeedItems.css';
import { apiFetch } from '../utils';
export default function FeedItems() {
const { feedId, tagName } = useParams<{ feedId: string; tagName: string }>();
const [searchParams] = useSearchParams();
const filterFn = searchParams.get('filter') || 'unread';
const [items, setItems] = useState<Item[]>([]);
const [loading, setLoading] = useState(true);
const [loadingMore, setLoadingMore] = useState(false);
const [hasMore, setHasMore] = useState(true);
const [error, setError] = useState('');
const [selectedIndex, setSelectedIndex] = useState(-1);
const fetchItems = (maxId?: string) => {
if (maxId) {
setLoadingMore(true);
} else {
setLoading(true);
setItems([]);
}
setError('');
let url = '/api/stream';
const params = new URLSearchParams();
if (feedId) {
params.append('feed_id', feedId);
} else if (tagName) {
params.append('tag', tagName);
}
if (maxId) {
params.append('max_id', maxId);
}
// Apply filters
const searchQuery = searchParams.get('q');
Iif (searchQuery) {
params.append('q', searchQuery);
}
Iif (filterFn === 'all') {
params.append('read_filter', 'all');
I} else if (filterFn === 'starred') {
params.append('starred', 'true');
params.append('read_filter', 'all');
} else {
// default to unread
Eif (!searchQuery) {
params.append('read_filter', 'unread');
}
}
const queryString = params.toString();
Eif (queryString) {
url += `?${queryString}`;
}
apiFetch(url)
.then((res) => {
Iif (!res.ok) {
throw new Error('Failed to fetch items');
}
return res.json();
})
.then((data) => {
if (maxId) {
setItems((prev) => [...prev, ...data]);
} else {
setItems(data);
}
setHasMore(data.length > 0);
setLoading(false);
setLoadingMore(false);
})
.catch((err) => {
setError(err.message);
setLoading(false);
setLoadingMore(false);
});
};
useEffect(() => {
fetchItems();
setSelectedIndex(-1);
}, [feedId, tagName, filterFn, searchParams]);
const scrollToItem = (index: number) => {
const element = document.getElementById(`item-${index}`);
Eif (element) {
element.scrollIntoView({ behavior: 'auto', block: 'start' });
}
};
const markAsRead = (item: Item) => {
const updatedItem = { ...item, read: true };
// Optimistic update
setItems((prevItems) => prevItems.map((i) => (i._id === item._id ? updatedItem : i)));
apiFetch(`/api/item/${item._id}`, {
method: 'PUT',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ read: true, starred: item.starred }),
}).catch((err) => console.error('Failed to mark read', err));
};
const toggleStar = (item: Item) => {
const updatedItem = { ...item, starred: !item.starred };
// Optimistic update
setItems((prevItems) => prevItems.map((i) => (i._id === item._id ? updatedItem : i)));
apiFetch(`/api/item/${item._id}`, {
method: 'PUT',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ read: item.read, starred: !item.starred }),
}).catch((err) => console.error('Failed to toggle star', err));
};
useEffect(() => {
const handleKeyDown = (e: KeyboardEvent) => {
Iif (items.length === 0) return;
if (e.key === 'j') {
setSelectedIndex((prev) => {
const nextIndex = Math.min(prev + 1, items.length - 1);
Eif (nextIndex !== prev) {
const item = items[nextIndex];
if (!item.read) {
markAsRead(item);
}
scrollToItem(nextIndex);
}
return nextIndex;
});
I} else if (e.key === 'k') {
setSelectedIndex((prev) => {
const nextIndex = Math.max(prev - 1, 0);
if (nextIndex !== prev) {
scrollToItem(nextIndex);
}
return nextIndex;
});
E} else if (e.key === 's') {
setSelectedIndex((currentIndex) => {
Eif (currentIndex >= 0 && currentIndex < items.length) {
toggleStar(items[currentIndex]);
}
return currentIndex;
});
}
};
window.addEventListener('keydown', handleKeyDown);
return () => window.removeEventListener('keydown', handleKeyDown);
}, [items]);
useEffect(() => {
const observer = new IntersectionObserver(
(entries) => {
entries.forEach((entry) => {
// Infinity scroll sentinel
if (entry.target.id === 'load-more-sentinel') {
Eif (entry.isIntersecting && !loadingMore && hasMore && items.length > 0) {
fetchItems(String(items[items.length - 1]._id));
}
return;
}
// If item is not intersecting and is above the viewport, it's been scrolled past
Eif (!entry.isIntersecting && entry.boundingClientRect.top < 0) {
const index = Number(entry.target.getAttribute('data-index'));
Eif (!isNaN(index) && index >= 0 && index < items.length) {
const item = items[index];
Eif (!item.read) {
markAsRead(item);
}
}
}
});
},
{ root: null, threshold: 0 }
);
items.forEach((_, index) => {
const el = document.getElementById(`item-${index}`);
Eif (el) observer.observe(el);
});
const sentinel = document.getElementById('load-more-sentinel');
if (sentinel) observer.observe(sentinel);
return () => observer.disconnect();
}, [items, loadingMore, hasMore]);
if (loading) return <div className="feed-items-loading">Loading items...</div>;
if (error) return <div className="feed-items-error">Error: {error}</div>;
return (
<div className="feed-items">
{items.length === 0 ? (
<p>No items found.</p>
) : (
<ul className="item-list">
{items.map((item, index) => (
<div
id={`item-${index}`}
key={item._id}
data-index={index}
data-selected={index === selectedIndex}
onClick={() => setSelectedIndex(index)}
>
<FeedItem item={item} />
</div>
))}
{hasMore && (
<div id="load-more-sentinel" className="loading-more">
{loadingMore ? 'Loading more...' : ''}
</div>
)}
</ul>
)}
</div>
);
}
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