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Yuri Tatishchev
2024-10-30 19:20:55 -07:00
commit c7fa882f57
26 changed files with 400 additions and 0 deletions
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src/app.css Normal file
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@import 'tailwindcss/base';
@import 'tailwindcss/components';
@import 'tailwindcss/utilities';

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src/app.d.ts vendored Normal file
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// See https://svelte.dev/docs/kit/types#app.d.ts
// for information about these interfaces
declare global {
namespace App {
interface Locals {
user: import('$lib/server/auth').SessionValidationResult['user'];
session: import('$lib/server/auth').SessionValidationResult['session'];
}
}
}
export {};

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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<link rel="icon" href="%sveltekit.assets%/favicon.png" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
%sveltekit.head%
</head>
<body data-sveltekit-preload-data="hover">
<div style="display: contents">%sveltekit.body%</div>
</body>
</html>

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src/hooks.server.ts Normal file
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import type { Handle } from '@sveltejs/kit';
import { dev } from '$app/environment';
import * as auth from '$lib/server/auth.js';
const handleAuth: Handle = async ({ event, resolve }) => {
const sessionId = event.cookies.get(auth.sessionCookieName);
if (!sessionId) {
event.locals.user = null;
event.locals.session = null;
return resolve(event);
}
const { session, user } = await auth.validateSession(sessionId);
if (session) {
event.cookies.set(auth.sessionCookieName, session.id, {
path: '/',
sameSite: 'lax',
httpOnly: true,
expires: session.expiresAt,
secure: !dev
});
} else {
event.cookies.delete(auth.sessionCookieName, { path: '/' });
}
event.locals.user = user;
event.locals.session = session;
return resolve(event);
};
export const handle: Handle = handleAuth;

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// place files you want to import through the `$lib` alias in this folder.

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src/lib/server/auth.ts Normal file
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import { eq } from 'drizzle-orm';
import { sha256 } from '@oslojs/crypto/sha2';
import { encodeBase32LowerCaseNoPadding, encodeHexLowerCase } from '@oslojs/encoding';
import { db } from '$lib/server/db';
import * as table from '$lib/server/db/schema';
const DAY_IN_MS = 1000 * 60 * 60 * 24;
export const sessionCookieName = 'auth-session';
function generateSessionToken(): string {
const bytes = crypto.getRandomValues(new Uint8Array(20));
const token = encodeBase32LowerCaseNoPadding(bytes);
return token;
}
export async function createSession(userId: string): Promise<table.Session> {
const token = generateSessionToken();
const sessionId = encodeHexLowerCase(sha256(new TextEncoder().encode(token)));
const session: table.Session = {
id: sessionId,
userId,
expiresAt: new Date(Date.now() + DAY_IN_MS * 30)
};
await db.insert(table.session).values(session);
return session;
}
export async function invalidateSession(sessionId: string): Promise<void> {
await db.delete(table.session).where(eq(table.session.id, sessionId));
}
export async function validateSession(sessionId: string) {
const [result] = await db
.select({
// Adjust user table here to tweak returned data
user: { id: table.user.id, username: table.user.username },
session: table.session
})
.from(table.session)
.innerJoin(table.user, eq(table.session.userId, table.user.id))
.where(eq(table.session.id, sessionId));
if (!result) {
return { session: null, user: null };
}
const { session, user } = result;
const sessionExpired = Date.now() >= session.expiresAt.getTime();
if (sessionExpired) {
await db.delete(table.session).where(eq(table.session.id, session.id));
return { session: null, user: null };
}
const renewSession = Date.now() >= session.expiresAt.getTime() - DAY_IN_MS * 15;
if (renewSession) {
session.expiresAt = new Date(Date.now() + DAY_IN_MS * 30);
await db
.update(table.session)
.set({ expiresAt: session.expiresAt })
.where(eq(table.session.id, session.id));
}
return { session, user };
}
export type SessionValidationResult = Awaited<ReturnType<typeof validateSession>>;

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src/lib/server/db/index.ts Normal file
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import { drizzle } from 'drizzle-orm/better-sqlite3';
import Database from 'better-sqlite3';
import { env } from '$env/dynamic/private';
if (!env.DATABASE_URL) throw new Error('DATABASE_URL is not set');
const client = new Database(env.DATABASE_URL);
export const db = drizzle(client);

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src/lib/server/db/schema.ts Normal file
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import { sqliteTable, text, integer } from 'drizzle-orm/sqlite-core';
export const user = sqliteTable('user', {
id: text('id').primaryKey(),
age: integer('age')
});
export const session = sqliteTable('session', {
id: text('id').primaryKey(),
userId: text('user_id')
.notNull()
.references(() => user.id),
expiresAt: integer('expires_at', { mode: 'timestamp' }).notNull()
});
export type Session = typeof session.$inferSelect;
export type User = typeof user.$inferSelect;

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src/routes/+layout.svelte Normal file
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<script lang="ts">
import '../app.css';
let { children } = $props();
</script>
{@render children()}

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src/routes/+page.svelte Normal file
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<h1>Welcome to SvelteKit</h1>
<p>Visit <a href="https://svelte.dev/docs/kit">svelte.dev/docs/kit</a> to read the documentation</p>