phlaym/moshing-mammut
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Improved logic to check whether more older posts are available

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This commit is contained in:
Max Nuding 2023-04-05 20:41:36 +02:00
parent a3fb47a329
commit fee1475779
Signed by: phlaym
GPG Key ID: A06651BAB6777237
1 changed files with 19 additions and 9 deletions
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30
src/routes/+page.svelte
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@ -13,13 +13,22 @@ let interval: NodeJS.Timer | null = null;
let moreOlderPostsAvailable = true; let moreOlderPostsAvailable = true;
let loadingOlderPosts = false; let loadingOlderPosts = false;
async function fetchPosts(filter: { since?: string, before?: string }): Promise<Post[]> { interface FetchOptions {
const params = new URLSearchParams(); since?: string,
if (filter?.since !== undefined) { before?: string,
params.set('since', filter.since); count?: number
} }
if (filter?.before !== undefined) {
params.set('before', filter.before); async function fetchPosts(options: FetchOptions): Promise<Post[]> {
const params = new URLSearchParams();
if (options?.since !== undefined) {
params.set('since', options.since);
}
if (options?.before !== undefined) {
params.set('before', options.before);
}
if (options?.count !== undefined) {
params.set('count', options.count.toFixed(0));
} }
const response = await fetch(`/api/posts?${params}`); const response = await fetch(`/api/posts?${params}`);
@ -33,7 +42,7 @@ function filterDuplicates(posts: Post[]): Post[] {
} }
function refresh() { function refresh() {
let filter = {}; let filter: FetchOptions = {};
if (data.posts.length > 0) { if (data.posts.length > 0) {
filter = { since: data.posts[0].created_at }; filter = { since: data.posts[0].created_at };
} }
@ -72,9 +81,9 @@ onMount(async () => {
function loadOlderPosts() { function loadOlderPosts() {
loadingOlderPosts = true; loadingOlderPosts = true;
let filter = {}; const filter: FetchOptions = { count: 20 };
if (data.posts.length > 0) { if (data.posts.length > 0) {
filter = { before: data.posts[data.posts.length - 1].created_at }; filter.before = data.posts[data.posts.length - 1].created_at;
} }
@ -83,7 +92,8 @@ function loadOlderPosts() {
// Append old posts, filter dupes // Append old posts, filter dupes
// There shouldn't be any duplicates, but better be safe than sorry // There shouldn't be any duplicates, but better be safe than sorry
data.posts = filterDuplicates(data.posts.concat(resp)); data.posts = filterDuplicates(data.posts.concat(resp));
moreOlderPostsAvailable = true; // If we got less than we expected, there are no older posts available
moreOlderPostsAvailable = resp.length < (filter.count ?? 20);
} else { } else {
moreOlderPostsAvailable = false; moreOlderPostsAvailable = false;
} }