Add follow button next to each user in search results

Extract FollowButton and shared follow/unfollow actions, reused by the user profile page.

web-player/src/lib/components/ui/media/FollowButton.svelte

@@ -0,0 +1,44 @@
+<script lang="ts">
+	import { untrack } from 'svelte';
+	import { enhance } from '$app/forms';
+	import Button from '../primitives/Button.svelte';
+
+	interface Props {
+		following: boolean;
+		userId?: string;
+		invalidateAll?: boolean;
+		class?: string;
+	}
+
+	let { following: initial, userId, invalidateAll = false, class: klass = '' }: Props = $props();
+
+	let following = $state(untrack(() => initial));
+	let submitting = $state(false);
+</script>
+
+<form
+	method="POST"
+	action={following ? '?/unfollow' : '?/follow'}
+	class={klass}
+	use:enhance={() => {
+		submitting = true;
+		return async ({ result, update }) => {
+			if (result.type === 'success' && typeof result.data?.following === 'boolean')
+				following = result.data.following;
+			await update({ reset: false, invalidateAll });
+			submitting = false;
+		};
+	}}
+>
+	{#if userId}
+		<input type="hidden" name="userId" value={userId} />
+	{/if}
+	<Button
+		type="submit"
+		size="sm"
+		variant={following ? 'secondary' : 'primary'}
+		disabled={submitting}
+	>
+		{following ? 'Dejar de seguir' : 'Seguir'}
+	</Button>
+</form>

web-player/src/lib/server/followActions.ts

@@ -0,0 +1,28 @@
+import { fail, type RequestEvent } from '@sveltejs/kit';
+import { createApiClient, requireAccessTokenAction } from '$lib/server/api';
+
+async function setFollowing({ request, params, locals, fetch }: RequestEvent, follow: boolean) {
+	const accessToken = requireAccessTokenAction(locals);
+	if (typeof accessToken !== 'string') return accessToken;
+
+	const form = await request.formData();
+	const id = String(form.get('userId') ?? '') || String(params.id ?? '');
+	if (!id) return fail(400, { message: 'Falta el usuario.' });
+
+	const api = createApiClient({ fetch, accessToken });
+	const options = { params: { path: { id } } };
+	const { error } = follow
+		? await api.POST('/users/{id}/follow', options)
+		: await api.DELETE('/users/{id}/follow', options);
+
+	if (error) {
+		return fail(502, {
+			message: follow ? 'No se pudo seguir al usuario.' : 'No se pudo dejar de seguir al usuario.'
+		});
+	}
+
+	return { following: follow, userId: id };
+}
+
+export const followUserAction = (event: RequestEvent) => setFollowing(event, true);
+export const unfollowUserAction = (event: RequestEvent) => setFollowing(event, false);

web-player/src/routes/(app)/explore/+page.server.ts

@@ -1,6 +1,7 @@
 import type { PageServerLoad, Actions } from './$types';
 import { createApiClient, unwrapOrError } from '$lib/server/api';
 import { addAlbumToPlaylistAction, addTrackAction } from '$lib/server/playlistActions';
+import { followUserAction, unfollowUserAction } from '$lib/server/followActions';
 import {
 	EXPLORE_ALBUMS_PAGE_SIZE,
 	EXPLORE_PAGE_SIZE as PAGE_SIZE,
@@ -45,16 +46,38 @@ export const load: PageServerLoad = async ({ url, locals, fetch }) => {
 
 	const tracks = unwrapOrError(tracksRes, 'No se pudieron cargar las canciones.');
 
+	const userItems = usersRes?.data?.items ?? [];
+	const followedIds = user
+		? await Promise.all(
+				userItems
+					.filter((u) => u.id !== user.sub)
+					.map((u) =>
+						api
+							.GET('/users/{id}/is-following', { params: { path: { id: u.id } } })
+							.then((res) => (res.data ? u.id : null))
+							.catch(() => null)
+					)
+			)
+		: [];
+	const followed = new Set(followedIds);
+
 	return {
 		query,
 		tracks,
 		albums: (albumsRes?.data?.items ?? []).map((item) => item.album),
-		users: usersRes?.data?.items ?? [],
+		users: userItems.map((u) => ({
+			...u,
+			isSelf: user?.sub === u.id,
+			isFollowing: followed.has(u.id)
+		})),
+		canFollow: !!user,
 		playlists: playlistsRes?.data?.items ?? []
 	};
 };
 
 export const actions: Actions = {
 	addTrack: addTrackAction,
-	addAlbumToPlaylist: addAlbumToPlaylistAction
+	addAlbumToPlaylist: addAlbumToPlaylistAction,
+	follow: followUserAction,
+	unfollow: unfollowUserAction
 };

web-player/src/routes/(app)/explore/+page.svelte

@@ -10,6 +10,7 @@
 	import InfiniteScroll from '$lib/components/ui/primitives/InfiniteScroll.svelte';
 	import Artwork from '$lib/components/ui/media/Artwork.svelte';
 	import Avatar from '$lib/components/ui/media/Avatar.svelte';
+	import FollowButton from '$lib/components/ui/media/FollowButton.svelte';
 	import PlayButton from '$lib/components/ui/media/PlayButton.svelte';
 	import EqBars from '$lib/components/ui/media/EqBars.svelte';
 	import ListRow from '$lib/components/ui/media/ListRow.svelte';
@@ -400,12 +401,15 @@
 					<SectionHeading title="Usuarios" count={counts.Usuarios} />
 					<ul class="flex flex-col gap-1">
 						{#each capped(sfilter, users) as u (u.id)}
-							<li>
+							<li class="flex items-center gap-3">
-								<ListRow title={u.name} href="/user/{u.id}" size="lg">
+								<ListRow title={u.name} href="/user/{u.id}" size="lg" class="min-w-0 flex-1">
 									{#snippet art()}
 										<Avatar name={u.name} src={u.profilePictureUrl} size="md" />
 									{/snippet}
 								</ListRow>
+								{#if data.canFollow && !u.isSelf}
+									<FollowButton following={u.isFollowing} userId={u.id} class="shrink-0" />
+								{/if}
 							</li>
 						{/each}
 					</ul>

web-player/src/routes/(app)/user/[id]/+page.server.ts

@@ -1,10 +1,6 @@
 import type { PageServerLoad, Actions } from './$types';
-import {
+import { createApiClient, optionalUser, unwrapOrError } from '$lib/server/api';
-	createApiClient,
+import { followUserAction, unfollowUserAction } from '$lib/server/followActions';
-	optionalUser,
-	requireAccessTokenAction,
-	unwrapOrError
-} from '$lib/server/api';
 
 const PROFILE_PLAYLISTS_PAGE_SIZE = 50;
 
@@ -55,21 +51,6 @@ export const load: PageServerLoad = async ({ params, locals, url, fetch, parent
 };
 
 export const actions: Actions = {
-	follow: async ({ params, locals, fetch }) => {
+	follow: followUserAction,
-		const accessToken = requireAccessTokenAction(locals);
+	unfollow: unfollowUserAction
-		if (typeof accessToken !== 'string') return accessToken;
-
-		const api = createApiClient({ fetch, accessToken });
-		await api.POST('/users/{id}/follow', { params: { path: { id: params.id } } });
-		return { following: true };
-	},
-
-	unfollow: async ({ params, locals, fetch }) => {
-		const accessToken = requireAccessTokenAction(locals);
-		if (typeof accessToken !== 'string') return accessToken;
-
-		const api = createApiClient({ fetch, accessToken });
-		await api.DELETE('/users/{id}/follow', { params: { path: { id: params.id } } });
-		return { following: false };
-	}
 };

web-player/src/routes/(app)/user/[id]/+page.svelte

@@ -1,29 +1,19 @@
 <script lang="ts">
-	import { untrack } from 'svelte';
-	import { enhance } from '$app/forms';
 	import ListMusic from '@lucide/svelte/icons/list-music';
 	import Page from '$lib/components/ui/layout/Page.svelte';
 	import MediaCard from '$lib/components/ui/media/MediaCard.svelte';
 	import EmptyState from '$lib/components/ui/primitives/EmptyState.svelte';
-	import Button from '$lib/components/ui/primitives/Button.svelte';
+	import FollowButton from '$lib/components/ui/media/FollowButton.svelte';
 	import Avatar from '$lib/components/ui/media/Avatar.svelte';
 	import PageHeader from '$lib/components/ui/layout/PageHeader.svelte';
 	import SectionHeading from '$lib/components/ui/layout/SectionHeading.svelte';
 	import { plural, playlistMeta } from '$lib/utils/format';
 
-	let { data, form } = $props();
+	let { data } = $props();
 
 	const profile = $derived(data.profile);
 	const playlists = $derived(data.playlists);
 	const canFollow = $derived(!data.isOwnProfile && !data.isAnonymous);
-
-	let following = $state(untrack(() => data.isFollowing));
-	let submitting = $state(false);
-
-	$effect(() => {
-		if (form && 'following' in form && typeof form.following === 'boolean')
-			following = form.following;
-	});
 </script>
 
 <svelte:head>
@@ -32,26 +22,7 @@
 </svelte:head>
 
 {#snippet followAction()}
-	<form
+	<FollowButton following={data.isFollowing} invalidateAll />
-		method="POST"
-		action={following ? '?/unfollow' : '?/follow'}
-		use:enhance={() => {
-			submitting = true;
-			return async ({ update }) => {
-				await update();
-				submitting = false;
-			};
-		}}
-	>
-		<Button
-			type="submit"
-			size="sm"
-			variant={following ? 'secondary' : 'primary'}
-			disabled={submitting}
-		>
-			{following ? 'Dejar de seguir' : 'Seguir'}
-		</Button>
-	</form>
 {/snippet}
 
 <Page>