added account page, profile picture

src/lib/components/Avatar.svelte

@@ -0,0 +1,52 @@
+<script lang="ts">
+	let {
+		src,
+		name,
+		size = "md",
+	}: {
+		src?: string | null;
+		name: string;
+		size?: "sm" | "md" | "lg" | "xl";
+	} = $props();
+
+	const dimensions = $derived(
+		size === "sm"
+			? "h-7 w-7"
+			: size === "lg"
+				? "h-16 w-16"
+				: size === "xl"
+					? "h-24 w-24"
+					: "h-10 w-10",
+	);
+	const iconSize = $derived(
+		size === "sm"
+			? "h-4 w-4"
+			: size === "lg"
+				? "h-8 w-8"
+				: size === "xl"
+					? "h-12 w-12"
+					: "h-5 w-5",
+	);
+</script>
+
+<div
+	class="{dimensions} border-rule bg-rule text-muted inline-flex shrink-0 items-center justify-center overflow-hidden rounded-full border"
+	role="img"
+	aria-label={`${name}'s profile picture`}
+>
+	{#if src}
+		<img {src} alt="" class="h-full w-full object-cover" />
+	{:else}
+		<svg
+			class={iconSize}
+			viewBox="0 0 24 24"
+			fill="none"
+			stroke="currentColor"
+			stroke-width="1.5"
+			aria-hidden="true"
+		>
+			<circle cx="12" cy="8" r="4" />
+			<path d="M4 21a8 8 0 0 1 16 0" />
+		</svg>
+	{/if}
+</div>

src/lib/components/CommentNode.svelte

@@ -4,6 +4,7 @@
 	import { get } from "svelte/store";
 	import { timeAgo } from "$lib/time";
 	import CommentNode from "./CommentNode.svelte";
+	import Avatar from "./Avatar.svelte";
 	import type { CommentDoc } from "$lib/types";
 
 	interface CommentTreeNode {
@@ -133,9 +134,15 @@
 
 <div class="py-3">
 	<div class="flex gap-3">
+		<a href={`/users/${comment.authorId}`} aria-label={`View ${comment.authorName}'s profile`}>
+			<Avatar src={comment.avatarUrl} name={comment.authorName} />
+		</a>
 		<div class="min-w-0 flex-1">
 			<p class="kicker">
-				{comment.authorName} · <span class="text-faint">{timeAgo(comment.createdAt)}</span>
+				<a href={`/users/${comment.authorId}`} class="hover:text-primary"
+					>{comment.authorName}</a
+				>
+				· <span class="text-faint">{timeAgo(comment.createdAt)}</span>
 				{#if edited}
 					· Edited
 				{/if}

src/lib/components/Navbar.svelte

@@ -1,6 +1,8 @@
 <script lang="ts">
-	import { isAuthenticated, initAuth, logout, currentUser } from "$lib/stores/auth";
+	import { isAuthenticated, initAuth, currentUser } from "$lib/stores/auth";
 	import { theme, toggleTheme } from "$lib/stores/theme";
+	import Avatar from "./Avatar.svelte";
+	import type { UserDoc } from "$lib/types";
 	import { onMount } from "svelte";
 	import { goto } from "$app/navigation";
 	import { page } from "$app/state";
@@ -9,6 +11,7 @@
 	let resourcesOpen = $state(false);
 	let auth = $state(false);
 	let admin = $state(false);
+	let navUser: UserDoc | null = $state(null);
 	let searchQuery = $state("");
 	let isDark = $state(false);
 
@@ -24,7 +27,10 @@
 	onMount(() => {
 		initAuth();
 		const unsubAuth = isAuthenticated.subscribe((v) => (auth = v));
-		const unsubUser = currentUser.subscribe((u) => (admin = u?.role === "admin"));
+		const unsubUser = currentUser.subscribe((u) => {
+			navUser = u;
+			admin = u?.role === "admin";
+		});
 		const unsubTheme = theme.subscribe((t) => (isDark = t === "dark"));
 		return () => {
 			unsubAuth();
@@ -39,6 +45,7 @@
 	const onQuestions = $derived(path === "/questions" || path.startsWith("/questions/"));
 	const onResources = $derived(onUnits || onNotes || onQuestions);
 	const onAdmin = $derived(path === "/admin" || path.startsWith("/admin/"));
+	const onAccount = $derived(path === "/account");
 </script>
 
 <header class="border-rule bg-surface border-b">
@@ -99,18 +106,14 @@
 			{#if admin}
 				<a href="/admin" class="nav-link {onAdmin ? 'nav-link-active' : ''}">Admin</a>
 			{/if}
-			{#if auth}
+			{#if auth && navUser}
-				<button
+				<a
-					type="button"
+					href="/account"
-					class="nav-link"
+					class="hover:ring-primary rounded-full ring-offset-2 ring-offset-(--color-surface) transition hover:ring-2"
-					onclick={() => {
+					aria-label="Open account"
-						if (!confirm("Sign out?")) return;
-						logout();
-						goto("/");
-					}}
 				>
-					Sign out
+					<Avatar src={navUser.avatarUrl} name={navUser.name} size="sm" />
-				</button>
+				</a>
 			{:else}
 				<a href="/auth/login" class="nav-link">Sign in</a>
 			{/if}
@@ -162,21 +165,28 @@
 			</form>
 		</nav>
 
-		<button
+		<div class="flex items-center gap-3 md:hidden">
-			class="text-muted hover:text-ink p-1 md:hidden"
+			{#if auth && navUser}
-			aria-label="Open menu"
+				<a href="/account" aria-label="Open account">
-			onclick={() => (mobileMenuOpen = !mobileMenuOpen)}
+					<Avatar src={navUser.avatarUrl} name={navUser.name} size="sm" />
-		>
+				</a>
-			<svg
+			{/if}
-				class="h-5 w-5"
+			<button
-				fill="none"
+				class="text-muted hover:text-ink p-1"
-				viewBox="0 0 24 24"
+				aria-label="Open menu"
-				stroke="currentColor"
+				onclick={() => (mobileMenuOpen = !mobileMenuOpen)}
-				stroke-width="1.5"
 			>
-				<path stroke-linecap="square" d="M4 7h16M4 12h16M4 17h16" />
+				<svg
-			</svg>
+					class="h-5 w-5"
-		</button>
+					fill="none"
+					viewBox="0 0 24 24"
+					stroke="currentColor"
+					stroke-width="1.5"
+				>
+					<path stroke-linecap="square" d="M4 7h16M4 12h16M4 17h16" />
+				</svg>
+			</button>
+		</div>
 	</div>
 
 	{#if mobileMenuOpen}
@@ -204,20 +214,7 @@
 					>Admin</a
 				>
 			{/if}
-			{#if auth}
+			{#if !auth}
-				<button
-					type="button"
-					class="nav-link block"
-					onclick={() => {
-						if (!confirm("Sign out?")) return;
-						logout();
-						goto("/");
-						mobileMenuOpen = false;
-					}}
-				>
-					Sign out
-				</button>
-			{:else}
 				<a
 					href="/auth/login"
 					class="nav-link block"

src/lib/server/api.ts

@@ -71,7 +71,7 @@ function normalizeEmail(email: string): string {
 function requireAuth(db: Db, token: string): Record<string, any> {
 	const user = db
 		.prepare(
-			"SELECT id AS _id, email, name, sessionToken, role, createdAt AS _creationTime FROM users WHERE sessionToken = ?",
+			"SELECT id AS _id, email, name, avatarUrl, sessionToken, role, createdAt AS _creationTime FROM users WHERE sessionToken = ?",
 		)
 		.get(token) as Record<string, any> | undefined;
 	if (!user) throw new Error("Not authenticated");
@@ -245,12 +245,126 @@ function usersGetByToken(db: Db, args: { token: string }) {
 	return (
 		db
 			.prepare(
-				"SELECT id AS _id, email, name, sessionToken, role, createdAt AS _creationTime FROM users WHERE sessionToken = ?",
+				"SELECT id AS _id, email, name, avatarUrl, sessionToken, role, createdAt AS _creationTime FROM users WHERE sessionToken = ?",
 			)
 			.get(args.token) ?? null
 	);
 }
 
+function usersUpdateProfile(
+	db: Db,
+	args: { token: string; name: string; avatarUrl?: string | null },
+) {
+	const user = requireAuth(db, args.token);
+	const name = (args.name ?? "").trim();
+	if (name.length < 2 || name.length > 50) {
+		throw new Error("Display name must be between 2 and 50 characters");
+	}
+
+	const avatarUrl = args.avatarUrl?.trim() || null;
+	if (avatarUrl && !/^\/uploads\/[a-zA-Z0-9-]+\.(png|jpe?g|gif|webp)$/.test(avatarUrl)) {
+		throw new Error("Invalid profile picture");
+	}
+
+	db.exec("BEGIN");
+	try {
+		db.prepare("UPDATE users SET name = ?, avatarUrl = ? WHERE id = ?").run(
+			name,
+			avatarUrl,
+			user._id,
+		);
+		db.prepare("UPDATE notes SET authorName = ? WHERE authorId = ?").run(name, user._id);
+		db.prepare("UPDATE questions SET authorName = ? WHERE authorId = ?").run(name, user._id);
+		db.prepare("UPDATE comments SET authorName = ? WHERE authorId = ?").run(name, user._id);
+		db.exec("COMMIT");
+	} catch (err) {
+		db.exec("ROLLBACK");
+		throw err;
+	}
+
+	return usersGetByToken(db, { token: args.token });
+}
+
+function usersChangePassword(
+	db: Db,
+	args: { token: string; currentPassword: string; newPassword: string },
+) {
+	const user = requireAuth(db, args.token);
+	const credentials = db.prepare("SELECT passwordHash FROM users WHERE id = ?").get(user._id) as
+		| { passwordHash: string | null }
+		| undefined;
+	if (
+		!credentials?.passwordHash ||
+		!verifyPassword(args.currentPassword ?? "", credentials.passwordHash)
+	) {
+		throw new Error("Current password is incorrect");
+	}
+
+	const newPassword = validatePassword(args.newPassword);
+	if (verifyPassword(newPassword, credentials.passwordHash)) {
+		throw new Error("New password must be different from your current password");
+	}
+	db.prepare("UPDATE users SET passwordHash = ? WHERE id = ?").run(
+		hashPassword(newPassword),
+		user._id,
+	);
+	return { ok: true };
+}
+
+function usersGetPublicProfile(db: Db, args: { id: string }) {
+	const profile = db
+		.prepare(
+			`SELECT
+        u.id AS _id,
+        u.name,
+        u.avatarUrl,
+        u.createdAt AS _creationTime,
+        (SELECT COUNT(*) FROM notes n WHERE n.authorId = u.id) AS noteCount,
+        (SELECT COUNT(*) FROM questions q WHERE q.authorId = u.id) AS questionCount,
+        (SELECT COUNT(*) FROM comments c WHERE c.authorId = u.id) AS commentCount
+      FROM users u
+      WHERE u.id = ?`,
+		)
+		.get(args.id) as Record<string, any> | undefined;
+	if (!profile) return null;
+
+	const posts = db
+		.prepare(
+			`SELECT id AS _id, 'note' AS type, title, createdAt, voteCount
+       FROM notes WHERE authorId = ?
+       UNION ALL
+       SELECT id AS _id, 'question' AS type, title, createdAt, voteCount
+       FROM questions WHERE authorId = ?
+       ORDER BY createdAt DESC
+       LIMIT 50`,
+		)
+		.all(args.id, args.id);
+	const comments = db
+		.prepare(
+			`SELECT
+        c.id AS _id,
+        c.content,
+        c.createdAt,
+        CASE WHEN c.parentId IS NOT NULL THEN 'note' ELSE 'question' END AS targetType,
+        COALESCE(c.parentId, c.questionId) AS targetId,
+        COALESCE(n.title, q.title) AS targetTitle
+      FROM comments c
+      LEFT JOIN notes n ON n.id = c.parentId
+      LEFT JOIN questions q ON q.id = c.questionId
+      WHERE c.authorId = ?
+      ORDER BY c.createdAt DESC
+      LIMIT 50`,
+		)
+		.all(args.id);
+
+	return {
+		...profile,
+		totalContributions: profile.noteCount + profile.questionCount + profile.commentCount,
+		posts,
+		comments,
+	};
+}
+
 // ---- topics ----
 
 function topicsGetBySlug(db: Db, args: { slug: string }) {
@@ -609,7 +723,7 @@ function questionsUpdate(
 // ---- comments ----
 
 const COMMENT_COLUMNS =
-	"id AS _id, content, authorId, authorName, parentId, questionId, parentCommentId, createdAt, updatedAt";
+	"c.id AS _id, c.content, c.authorId, COALESCE(u.name, c.authorName) AS authorName, u.avatarUrl, c.parentId, c.questionId, c.parentCommentId, c.createdAt, c.updatedAt";
 
 function commentsCreateOnNote(
 	db: Db,
@@ -664,7 +778,7 @@ function commentsCreateOnQuestion(
 function commentsListByNote(db: Db, args: { noteId: string }) {
 	return db
 		.prepare(
-			`SELECT ${COMMENT_COLUMNS} FROM comments WHERE parentId = ? ORDER BY createdAt ASC`,
+			`SELECT ${COMMENT_COLUMNS} FROM comments c LEFT JOIN users u ON u.id = c.authorId WHERE c.parentId = ? ORDER BY c.createdAt ASC`,
 		)
 		.all(args.noteId);
 }
@@ -672,7 +786,7 @@ function commentsListByNote(db: Db, args: { noteId: string }) {
 function commentsListByQuestion(db: Db, args: { questionId: string }) {
 	return db
 		.prepare(
-			`SELECT ${COMMENT_COLUMNS} FROM comments WHERE questionId = ? ORDER BY createdAt ASC`,
+			`SELECT ${COMMENT_COLUMNS} FROM comments c LEFT JOIN users u ON u.id = c.authorId WHERE c.questionId = ? ORDER BY c.createdAt ASC`,
 		)
 		.all(args.questionId);
 }
@@ -834,7 +948,7 @@ function adminGetState(db: Db, args: { token?: string }) {
 	if (args.token) {
 		const user = db
 			.prepare(
-				"SELECT id AS _id, email, name, sessionToken, role, createdAt AS _creationTime FROM users WHERE sessionToken = ?",
+				"SELECT id AS _id, email, name, avatarUrl, sessionToken, role, createdAt AS _creationTime FROM users WHERE sessionToken = ?",
 			)
 			.get(args.token) as Record<string, any> | undefined;
 		if (user) {
@@ -1161,6 +1275,9 @@ const handlers: Record<string, Handler> = {
 	"auth:forgotPassword": authForgotPassword,
 	"auth:resetPassword": authResetPassword,
 	"users:getByToken": usersGetByToken,
+	"users:updateProfile": usersUpdateProfile,
+	"users:changePassword": usersChangePassword,
+	"users:getPublicProfile": usersGetPublicProfile,
 	"topics:getBySlug": topicsGetBySlug,
 	"topics:getAll": topicsGetAll,
 	"units:getByCode": unitsGetByCode,

src/lib/server/db.ts

@@ -16,6 +16,7 @@ function createSchema(database: DatabaseSync) {
       name TEXT NOT NULL,
       sessionToken TEXT,
       passwordHash TEXT,
+      avatarUrl TEXT,
       role TEXT NOT NULL DEFAULT 'user',
       createdAt INTEGER NOT NULL
     );
@@ -231,6 +232,9 @@ function migrate(database: DatabaseSync) {
 	if (!columns.some((c) => c.name === "role")) {
 		database.exec("ALTER TABLE users ADD COLUMN role TEXT NOT NULL DEFAULT 'user'");
 	}
+	if (!columns.some((c) => c.name === "avatarUrl")) {
+		database.exec("ALTER TABLE users ADD COLUMN avatarUrl TEXT");
+	}
 
 	const unitColumns = database.prepare("PRAGMA table_info(units)").all() as { name: string }[];
 	if (!unitColumns.some((c) => c.name === "code2")) {

src/lib/stores/auth.ts

@@ -90,6 +90,11 @@ export function getToken(): string | null {
 	}
 }
 
+export function setCurrentUser(user: UserDoc) {
+	currentUser.set(user);
+	isAuthenticated.set(true);
+}
+
 export function logout() {
 	localStorage.removeItem(STORAGE_KEY);
 	currentUser.set(null);

src/lib/types.ts

@@ -8,6 +8,7 @@ export type Doc<T extends string> = {
 export type UserDoc = Doc<"users"> & {
 	email: string;
 	name: string;
+	avatarUrl?: string;
 	sessionToken?: string;
 	role: "user" | "admin";
 };
@@ -60,6 +61,7 @@ export type CommentDoc = Doc<"comments"> & {
 	content: string;
 	authorId: Id<"users">;
 	authorName: string;
+	avatarUrl?: string;
 	parentId?: Id<"notes">;
 	questionId?: Id<"questions">;
 	parentCommentId?: Id<"comments">;

src/routes/account/+page.svelte

@@ -0,0 +1,261 @@
+<script lang="ts">
+	import { goto } from "$app/navigation";
+	import { uploadImage, mutation } from "$lib/api";
+	import Avatar from "$lib/components/Avatar.svelte";
+	import { currentUser, getToken, initAuth, logout, setCurrentUser } from "$lib/stores/auth";
+	import type { UserDoc } from "$lib/types";
+	import { get } from "svelte/store";
+	import { onMount } from "svelte";
+
+	let user: UserDoc | null = $state(null);
+	let loading = $state(true);
+	let name = $state("");
+	let avatarUrl: string | null = $state(null);
+	let avatarFile: File | null = $state(null);
+	let previewUrl: string | null = $state(null);
+	let profileSaving = $state(false);
+	let profileMessage = $state("");
+	let profileError = $state("");
+
+	let currentPassword = $state("");
+	let newPassword = $state("");
+	let confirmPassword = $state("");
+	let passwordSaving = $state(false);
+	let passwordMessage = $state("");
+	let passwordError = $state("");
+
+	onMount(async () => {
+		await initAuth();
+		user = get(currentUser);
+		if (!user) {
+			goto("/auth/login");
+			return;
+		}
+		name = user.name;
+		avatarUrl = user.avatarUrl ?? null;
+		loading = false;
+	});
+
+	function chooseAvatar(event: Event) {
+		const input = event.currentTarget as HTMLInputElement;
+		const file = input.files?.[0] ?? null;
+		if (!file) return;
+		if (!file.type.startsWith("image/")) {
+			profileError = "Please choose an image file";
+			return;
+		}
+		if (previewUrl) URL.revokeObjectURL(previewUrl);
+		avatarFile = file;
+		previewUrl = URL.createObjectURL(file);
+		profileError = "";
+		profileMessage = "";
+	}
+
+	function removeAvatar() {
+		if (previewUrl) URL.revokeObjectURL(previewUrl);
+		previewUrl = null;
+		avatarFile = null;
+		avatarUrl = null;
+		profileMessage = "";
+	}
+
+	async function saveProfile(event: SubmitEvent) {
+		event.preventDefault();
+		const token = getToken();
+		if (!token) return;
+		if (name.trim().length < 2) {
+			profileError = "Display name must be at least 2 characters";
+			return;
+		}
+
+		profileSaving = true;
+		profileError = "";
+		profileMessage = "";
+		try {
+			let nextAvatarUrl = avatarUrl;
+			if (avatarFile) nextAvatarUrl = await uploadImage(token, avatarFile);
+			const updated = (await mutation("users:updateProfile", {
+				token,
+				name: name.trim(),
+				avatarUrl: nextAvatarUrl,
+			})) as UserDoc;
+			user = updated;
+			name = updated.name;
+			avatarUrl = updated.avatarUrl ?? null;
+			avatarFile = null;
+			if (previewUrl) URL.revokeObjectURL(previewUrl);
+			previewUrl = null;
+			setCurrentUser(updated);
+			profileMessage = "Profile saved";
+		} catch (err: any) {
+			profileError = err.message ?? "Failed to save profile";
+		} finally {
+			profileSaving = false;
+		}
+	}
+
+	async function changePassword(event: SubmitEvent) {
+		event.preventDefault();
+		const token = getToken();
+		if (!token) return;
+		if (newPassword.length < 8) {
+			passwordError = "New password must be at least 8 characters";
+			return;
+		}
+		if (newPassword !== confirmPassword) {
+			passwordError = "New passwords do not match";
+			return;
+		}
+
+		passwordSaving = true;
+		passwordError = "";
+		passwordMessage = "";
+		try {
+			await mutation("users:changePassword", { token, currentPassword, newPassword });
+			currentPassword = "";
+			newPassword = "";
+			confirmPassword = "";
+			passwordMessage = "Password changed";
+		} catch (err: any) {
+			passwordError = err.message ?? "Failed to change password";
+		} finally {
+			passwordSaving = false;
+		}
+	}
+
+	function signOut() {
+		if (!confirm("Sign out?")) return;
+		logout();
+		goto("/");
+	}
+</script>
+
+<svelte:head>
+	<title>Account — Notebook</title>
+</svelte:head>
+
+<div class="page">
+	{#if loading}
+		<p class="kicker py-16">Loading</p>
+	{:else if user}
+		<div class="flex items-start justify-between gap-6">
+			<div>
+				<p class="kicker">Account</p>
+				<h1 class="text-ink mt-2 font-serif text-4xl font-medium">Your profile</h1>
+				<p class="text-muted mt-2 text-sm">
+					<a href={`/users/${user._id}`} class="text-secondary hover:text-secondary-dark"
+						>View your public profile</a
+					>
+				</p>
+			</div>
+			<button type="button" onclick={signOut} class="btn-ghost shrink-0">Sign out</button>
+		</div>
+
+		<div class="mt-10 grid gap-12 md:grid-cols-2">
+			<form onsubmit={saveProfile} class="border-rule space-y-6 border-t pt-7">
+				<div>
+					<p class="kicker mb-3">Profile picture</p>
+					<div class="flex items-center gap-5">
+						<Avatar src={previewUrl ?? avatarUrl} name={name || user.name} size="lg" />
+						<div class="flex flex-wrap gap-2">
+							<label class="btn-secondary">
+								Choose image
+								<input
+									type="file"
+									accept="image/png,image/jpeg,image/gif,image/webp"
+									onchange={chooseAvatar}
+									class="sr-only"
+								/>
+							</label>
+							{#if avatarUrl || previewUrl}
+								<button type="button" onclick={removeAvatar} class="btn-ghost"
+									>Remove</button
+								>
+							{/if}
+						</div>
+					</div>
+					<p class="text-faint mt-2 text-xs">PNG, JPG, GIF or WebP. Maximum 10 MB.</p>
+				</div>
+
+				<div>
+					<label for="display-name" class="kicker mb-2 block">Display name</label>
+					<input
+						id="display-name"
+						bind:value={name}
+						maxlength="50"
+						autocomplete="name"
+						class="field"
+						required
+					/>
+				</div>
+
+				<div>
+					<label for="account-email" class="kicker mb-2 block">Email</label>
+					<input
+						id="account-email"
+						value={user.email}
+						class="field text-muted"
+						readonly
+					/>
+					<p class="text-faint mt-2 text-xs">
+						Your verified email cannot be changed here.
+					</p>
+				</div>
+
+				{#if profileError}<p class="text-primary text-sm">{profileError}</p>{/if}
+				{#if profileMessage}<p class="text-secondary text-sm">{profileMessage}</p>{/if}
+				<button type="submit" disabled={profileSaving} class="btn-primary">
+					{profileSaving ? "Saving..." : "Save profile"}
+				</button>
+			</form>
+
+			<form onsubmit={changePassword} class="border-rule space-y-5 border-t pt-7">
+				<div>
+					<p class="kicker">Password</p>
+					<h2 class="text-ink mt-2 font-serif text-2xl font-medium">Change password</h2>
+				</div>
+				<div>
+					<label for="current-password" class="kicker mb-2 block">Current password</label>
+					<input
+						id="current-password"
+						type="password"
+						bind:value={currentPassword}
+						autocomplete="current-password"
+						class="field"
+						required
+					/>
+				</div>
+				<div>
+					<label for="new-password" class="kicker mb-2 block">New password</label>
+					<input
+						id="new-password"
+						type="password"
+						bind:value={newPassword}
+						autocomplete="new-password"
+						placeholder="At least 8 characters"
+						class="field"
+						required
+					/>
+				</div>
+				<div>
+					<label for="confirm-password" class="kicker mb-2 block"
+						>Confirm new password</label
+					>
+					<input
+						id="confirm-password"
+						type="password"
+						bind:value={confirmPassword}
+						autocomplete="new-password"
+						class="field"
+						required
+					/>
+				</div>
+				{#if passwordError}<p class="text-primary text-sm">{passwordError}</p>{/if}
+				{#if passwordMessage}<p class="text-secondary text-sm">{passwordMessage}</p>{/if}
+				<button type="submit" disabled={passwordSaving} class="btn-primary">
+					{passwordSaving ? "Changing..." : "Change password"}
+				</button>
+			</form>
+		</div>
+	{/if}
+</div>

src/routes/notes/[id]/+page.svelte

@@ -186,7 +186,10 @@
 				{/if}
 				{#if !editMode}
 					<p class="kicker mt-3">
-						{note.authorName} · {timeAgo(note.createdAt)}
+						<a href={`/users/${note.authorId}`} class="hover:text-primary"
+							>{note.authorName}</a
+						>
+						· {timeAgo(note.createdAt)}
 						{#if isAuthor}
 							·
 							<button

src/routes/questions/[id]/+page.svelte

@@ -172,7 +172,10 @@
 				{/if}
 				{#if !editMode}
 					<p class="kicker mt-3">
-						{question.authorName} · {timeAgo(question.createdAt)}
+						<a href={`/users/${question.authorId}`} class="hover:text-primary"
+							>{question.authorName}</a
+						>
+						· {timeAgo(question.createdAt)}
 						{#if isAuthor}
 							·
 							<button

src/routes/users/[id]/+page.svelte

@@ -0,0 +1,160 @@
+<script lang="ts">
+	import { page } from "$app/state";
+	import { query } from "$lib/api";
+	import Avatar from "$lib/components/Avatar.svelte";
+	import { previewMarkdown } from "$lib/markdown";
+	import { timeAgo } from "$lib/time";
+	import { onMount } from "svelte";
+
+	type Profile = {
+		_id: string;
+		name: string;
+		avatarUrl?: string;
+		_creationTime: number;
+		noteCount: number;
+		questionCount: number;
+		commentCount: number;
+		totalContributions: number;
+		posts: {
+			_id: string;
+			type: "note" | "question";
+			title: string;
+			createdAt: number;
+			voteCount: number;
+		}[];
+		comments: {
+			_id: string;
+			content: string;
+			createdAt: number;
+			targetType: "note" | "question";
+			targetId: string;
+			targetTitle: string | null;
+		}[];
+	};
+
+	let profile: Profile | null = $state(null);
+	let loading = $state(true);
+	let tab: "posts" | "comments" = $state("posts");
+
+	onMount(async () => {
+		profile = (await query("users:getPublicProfile", { id: page.params.id })) as Profile | null;
+		loading = false;
+	});
+
+	function contentPath(type: "note" | "question", id: string) {
+		return type === "note" ? `/notes/${id}` : `/questions/${id}`;
+	}
+</script>
+
+<svelte:head>
+	<title>{profile?.name ?? "Profile"} — Notebook</title>
+</svelte:head>
+
+<div class="page">
+	{#if loading}
+		<p class="kicker py-16">Loading</p>
+	{:else if profile}
+		<header class="flex items-center gap-6">
+			<Avatar src={profile.avatarUrl} name={profile.name} size="xl" />
+			<div>
+				<p class="kicker">Contributor</p>
+				<h1 class="text-ink mt-2 font-serif text-4xl font-medium">{profile.name}</h1>
+				<p class="text-muted mt-2 text-sm">
+					Member since {new Date(profile._creationTime).toLocaleDateString(undefined, {
+						month: "long",
+						year: "numeric",
+					})}
+				</p>
+			</div>
+		</header>
+
+		<section class="border-rule mt-10 grid grid-cols-2 border-y sm:grid-cols-4">
+			<div class="border-rule border-r px-4 py-5 first:pl-0">
+				<p class="text-ink font-serif text-3xl">{profile.totalContributions}</p>
+				<p class="kicker text-muted mt-1">Contributions</p>
+			</div>
+			<div class="border-rule border-r px-4 py-5">
+				<p class="text-ink font-serif text-3xl">{profile.noteCount}</p>
+				<p class="kicker text-muted mt-1">Notes</p>
+			</div>
+			<div class="border-rule border-r px-4 py-5">
+				<p class="text-ink font-serif text-3xl">{profile.questionCount}</p>
+				<p class="kicker text-muted mt-1">Questions</p>
+			</div>
+			<div class="px-4 py-5">
+				<p class="text-ink font-serif text-3xl">{profile.commentCount}</p>
+				<p class="kicker text-muted mt-1">Comments</p>
+			</div>
+		</section>
+
+		<div class="mt-10 flex gap-5">
+			<button
+				type="button"
+				onclick={() => (tab = "posts")}
+				class="kicker border-b-2 pb-2 {tab === 'posts'
+					? 'border-primary text-ink'
+					: 'text-muted border-transparent'}"
+			>
+				Posts ({profile.posts.length})
+			</button>
+			<button
+				type="button"
+				onclick={() => (tab = "comments")}
+				class="kicker border-b-2 pb-2 {tab === 'comments'
+					? 'border-primary text-ink'
+					: 'text-muted border-transparent'}"
+			>
+				Comments ({profile.commentCount})
+			</button>
+		</div>
+
+		<section class="mt-3">
+			{#if tab === "posts"}
+				{#if profile.posts.length === 0}
+					<p class="text-muted border-rule border-t py-8 text-sm">No posts yet.</p>
+				{:else}
+					{#each profile.posts as post}
+						<article class="border-rule border-t py-5">
+							<p class="kicker text-secondary">{post.type}</p>
+							<a
+								href={contentPath(post.type, post._id)}
+								class="text-ink hover:text-primary mt-1 block text-[15px] font-semibold"
+							>
+								{post.title}
+							</a>
+							<p class="text-faint mt-1 text-xs">
+								{timeAgo(post.createdAt)} · {post.voteCount} vote{post.voteCount ===
+								1
+									? ""
+									: "s"}
+							</p>
+						</article>
+					{/each}
+				{/if}
+			{:else if profile.comments.length === 0}
+				<p class="text-muted border-rule border-t py-8 text-sm">No comments yet.</p>
+			{:else}
+				{#each profile.comments as comment}
+					<article class="border-rule border-t py-5">
+						<p class="kicker">
+							On
+							<a
+								href={contentPath(comment.targetType, comment.targetId)}
+								class="hover:text-primary"
+							>
+								{comment.targetTitle ?? `a ${comment.targetType}`}
+							</a>
+						</p>
+						<p class="text-ink mt-2 text-sm leading-relaxed">
+							{previewMarkdown(comment.content)}
+						</p>
+						<p class="text-faint mt-1 text-xs">{timeAgo(comment.createdAt)}</p>
+					</article>
+				{/each}
+			{/if}
+		</section>
+	{:else}
+		<h1 class="text-ink font-serif text-3xl">Profile not found</h1>
+		<p class="text-muted mt-2 text-sm">This user does not exist.</p>
+	{/if}
+</div>