a tool for shared writing and social publishing
leaflet.pub
adding tabs to Reader
cozylittle.house
-100
app/(home-pages)/reader/ReaderContent.tsx
-100
app/(home-pages)/reader/ReaderContent.tsx
···
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"use client";
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import { ButtonPrimary } from "components/Buttons";
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import { DiscoverSmall } from "components/Icons/DiscoverSmall";
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import type { Cursor, Post } from "./getReaderFeed";
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import useSWRInfinite from "swr/infinite";
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import { getReaderFeed } from "./getReaderFeed";
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import { useEffect, useRef } from "react";
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import Link from "next/link";
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import { PostListing } from "components/PostListing";
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export const ReaderContent = (props: {
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posts: Post[];
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nextCursor: Cursor | null;
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}) => {
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const getKey = (
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pageIndex: number,
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previousPageData: {
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posts: Post[];
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nextCursor: Cursor | null;
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} | null,
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) => {
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// Reached the end
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if (previousPageData && !previousPageData.nextCursor) return null;
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// First page, we don't have previousPageData
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if (pageIndex === 0) return ["reader-feed", null] as const;
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// Add the cursor to the key
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return ["reader-feed", previousPageData?.nextCursor] as const;
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};
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const { data, size, setSize, isValidating } = useSWRInfinite(
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getKey,
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([_, cursor]) => getReaderFeed(cursor),
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{
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fallbackData: [{ posts: props.posts, nextCursor: props.nextCursor }],
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revalidateFirstPage: false,
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},
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);
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const loadMoreRef = useRef<HTMLDivElement>(null);
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// Set up intersection observer to load more when trigger element is visible
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useEffect(() => {
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const observer = new IntersectionObserver(
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(entries) => {
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if (entries[0].isIntersecting && !isValidating) {
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const hasMore = data && data[data.length - 1]?.nextCursor;
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if (hasMore) {
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setSize(size + 1);
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}
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}
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},
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{ threshold: 0.1 },
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);
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if (loadMoreRef.current) {
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observer.observe(loadMoreRef.current);
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}
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return () => observer.disconnect();
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}, [data, size, setSize, isValidating]);
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const allPosts = data ? data.flatMap((page) => page.posts) : [];
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if (allPosts.length === 0 && !isValidating) return <ReaderEmpty />;
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return (
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<div className="flex flex-col gap-3 relative">
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{allPosts.map((p) => (
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<PostListing {...p} key={p.documents.uri} />
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))}
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{/* Trigger element for loading more posts */}
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<div
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ref={loadMoreRef}
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className="absolute bottom-96 left-0 w-full h-px pointer-events-none"
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aria-hidden="true"
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/>
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{isValidating && (
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<div className="text-center text-tertiary py-4">
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Loading more posts...
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</div>
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)}
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</div>
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);
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};
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export const ReaderEmpty = () => {
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return (
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<div className="flex flex-col gap-2 container bg-[rgba(var(--bg-page),.7)] sm:p-4 p-3 justify-between text-center text-tertiary">
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Nothing to read yet… <br />
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Subscribe to publications and find their posts here!
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<Link href={"/discover"}>
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<ButtonPrimary className="mx-auto place-self-center">
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<DiscoverSmall /> Discover Publications
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</ButtonPrimary>
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</Link>
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</div>
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);
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};
+12
-16
app/(home-pages)/reader/page.tsx
+12
-16
app/(home-pages)/reader/page.tsx
···
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import { getIdentityData } from "actions/getIdentityData";
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import { DashboardLayout } from "components/PageLayouts/DashboardLayout";
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import { ReaderContent } from "./ReaderContent";
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import { SubscriptionsContent } from "./SubscriptionsContent";
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import { InboxContent } from "./InboxContent";
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import { LocalContent } from "./LocalContent";
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import { GlobalContent } from "./GlobalContent";
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import { getReaderFeed } from "./getReaderFeed";
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import { getSubscriptions } from "./getSubscriptions";
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export default async function Reader(props: {}) {
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let posts = await getReaderFeed();
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let publications = await getSubscriptions();
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return (
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<DashboardLayout
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id="reader"
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currentPage="reader"
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defaultTab="Read"
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defaultTab="Inbox"
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actions={null}
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tabs={{
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Read: {
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Inbox: {
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controls: null,
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content: (
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<ReaderContent nextCursor={posts.nextCursor} posts={posts.posts} />
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<InboxContent nextCursor={posts.nextCursor} posts={posts.posts} />
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),
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},
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Subscriptions: {
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Friends: {
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controls: null,
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content: (
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<SubscriptionsContent
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publications={publications.subscriptions}
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nextCursor={publications.nextCursor}
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/>
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),
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content: <LocalContent />,
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},
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Global: {
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controls: null,
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content: <GlobalContent />,
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},
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}}
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/>