Initial commit of Vox English challenge system

src/lib/assets/favicon.svg

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src/lib/index.ts

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

src/lib/server/auth.ts

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+import bcrypt from 'bcryptjs';
+import db from './db';
+
+export async function hashPassword(password: string) {
+    return await bcrypt.hash(password, 10);
+}
+
+export async function verifyPassword(password: string, hash: string) {
+    return await bcrypt.compare(password, hash);
+}
+
+export function createSession(userId: number, username: string, isAdmin: boolean, cookies: any) {
+    const sessionToken = crypto.randomUUID();
+    cookies.set('session', JSON.stringify({ userId, username, isAdmin }), {
+        path: '/',
+        httpOnly: true,
+        sameSite: 'strict',
+        secure: process.env.NODE_ENV === 'production',
+        maxAge: 60 * 60 * 24 * 7 // 1 week
+    });
+}
+
+export function getSession(cookies: any) {
+    const session = cookies.get('session');
+    if (!session) return null;
+    try {
+        return JSON.parse(session);
+    } catch {
+        return null;
+    }
+}
+
+export function removeSession(cookies: any) {
+    cookies.delete('session', { path: '/' });
+}

src/lib/server/db.ts

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+import Database from 'better-sqlite3';
+import { join } from 'path';
+
+const dbPath = join(process.cwd(), 'data.db');
+const db = new Database(dbPath);
+
+// Initialize schema
+db.exec(`
+  CREATE TABLE IF NOT EXISTS users (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    username TEXT UNIQUE NOT NULL,
+    password_hash TEXT NOT NULL,
+    is_admin INTEGER DEFAULT 0,
+    created_at DATETIME DEFAULT CURRENT_TIMESTAMP
+  );
+
+  CREATE TABLE IF NOT EXISTS words (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    word TEXT UNIQUE NOT NULL,
+    meaning TEXT NOT NULL
+  );
+
+  CREATE TABLE IF NOT EXISTS mistakes (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    user_id INTEGER NOT NULL,
+    word_id INTEGER NOT NULL,
+    wrong_count INTEGER DEFAULT 1,
+    last_wrong_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (user_id) REFERENCES users(id),
+    FOREIGN KEY (word_id) REFERENCES words(id),
+    UNIQUE(user_id, word_id)
+  );
+
+  CREATE TABLE IF NOT EXISTS user_stats (
+    user_id INTEGER PRIMARY KEY,
+    total_answered INTEGER DEFAULT 0,
+    correct_count INTEGER DEFAULT 0,
+    max_streak INTEGER DEFAULT 0,
+    FOREIGN KEY (user_id) REFERENCES users(id)
+  );
+`);
+
+// Seed initial words if empty
+const wordCount = db.prepare('SELECT COUNT(*) as count FROM words').get() as { count: number };
+if (wordCount.count === 0) {
+    const insert = db.prepare('INSERT INTO words (word, meaning) VALUES (?, ?)');
+    const initialWords = [
+        ["abandon", "v. 放弃，抛弃"],
+        ["abnormal", "adj. 反常的，异常的"],
+        ["abolish", "v. 废除，废止"],
+        ["abrupt", "adj. 突然的，意外的"],
+        ["absurd", "adj. 荒谬的，可笑的"],
+        ["abundant", "adj. 丰富的，充裕的"],
+        ["academy", "n. 学院，研究院"],
+        ["accelerate", "v. 加速，促进"],
+        ["accommodate", "v. 容纳，提供住宿"],
+        ["accompany", "v. 陪伴，伴随"],
+        ["accomplish", "v. 完成，实现"],
+        ["accumulate", "v. 积累，积聚"],
+        ["accurate", "adj. 准确的，精确的"],
+        ["accuse", "v. 指控，谴责"],
+        ["custom", "n. 习惯，风俗"],
+        ["curious", "adj. 好奇的"],
+        ["crucial", "adj. 至关重要的"],
+        ["compromise", "v./n. 妥协，折中"],
+        ["comprehend", "v. 理解，领会"],
+        ["budget", "n. 预算"]
+    ];
+    
+    const transaction = db.transaction((words) => {
+        for (const [w, m] of words) insert.run(w, m);
+    });
+    transaction(initialWords);
+}
+
+export default db;