feat: friend system

src/lib/components/lnv/sidebar/UserSidebar.svelte

@@ -5,7 +5,7 @@
 	import { getAuthURL, getOIDCUser } from "$lib/services/oidc";
 	import * as Avatar from "$lib/components/ui/avatar";
 	import { m } from "$lang/messages";
-	import { refreshToken, uploadID } from "$lib/services/lnv";
+	import { fetchMyUser, followUser, refreshToken, unfollowUser, uploadID } from "$lib/services/lnv";
 
 	interface OIDCUser {
 		sub: string;
@@ -25,6 +25,8 @@
 			);
 		}
 	});
+
+	let testInput = "";
 </script>
 
 {#if !user}
@@ -74,6 +76,22 @@
 			refreshToken();
 		}}>refresh</button
 	>
+
+	{#await fetchMyUser() then u}
+		<span><b>Followers:</b> {u.followers}</span>
+		<span><b>Following:</b> {u.following}</span>
+		<span><b>Reviews:</b> {u.reviewsCount}</span>
+		<span><b>Hazards:</b> {u.hazardsCount}</span>
+	{/await}
+
+	<input type="text" bind:value={testInput}>
+	<button onclick={async () => {
+		alert(await followUser(testInput).catch(alert));
+	}}>Follow</button>
+	<button onclick={async () => {
+		alert(await unfollowUser(testInput).catch(alert));
+	}}>Unfollow</button>
+	
 	<pre>{user.sub}</pre>
 	{JSON.stringify(user, null, 2)}
 {/if}

src/lib/services/lnv.ts

@@ -280,3 +280,48 @@ export async function ping() {
 	const res = await fetch(LNV_SERVER + "/ping").catch(() => ({ ok: false }));
 	return res.ok;
 }
+
+export interface UserInfo {
+	username: string;
+	createdAt: string;
+	reviewsCount: number;
+	hazardsCount: number;
+	followers: number;
+	following: number;
+}
+
+export async function fetchMyUser(): Promise<UserInfo> {
+	const res = await authFetch(LNV_SERVER + "/user/me");
+	if (!res.ok) {
+		throw new Error(`Failed to fetch user: ${res.statusText}`);
+	}
+	return await res.json();
+}
+
+export async function followUser(username: string) {
+	const res = await authFetch(LNV_SERVER + "/user/follow", {
+		method: "POST",
+		headers: {
+			"Content-Type": "application/json",
+		},
+		body: JSON.stringify({ username }),
+	});
+	if (!res.ok) {
+		throw new Error(`Failed to follow user: ${res.statusText}`);
+	}
+	return await res.json();
+}
+
+export async function unfollowUser(username: string) {
+	const res = await authFetch(LNV_SERVER + "/user/unfollow", {
+		method: "POST",
+		headers: {
+			"Content-Type": "application/json",
+		},
+		body: JSON.stringify({ username }),
+	});
+	if (!res.ok) {
+		throw new Error(`Failed to unfollow user: ${res.statusText}`);
+	}
+	return await res.json();
+}