ok, implement sqlite

src/lib/auth.ts

@@ -1,39 +1,51 @@
-
 'use server';
 
 import { redirect } from 'next/navigation';
 import { cookies } from 'next/headers';
+import db from './db';
+import type { User } from './types';
 
-const FAKE_USER = {
-  email: 'admin@example.com',
-  password: 'password',
-  name: 'Admin User',
-};
 
 export async function signIn(formData: FormData) {
   const email = formData.get('email');
   const password = formData.get('password');
 
-  if (email === FAKE_USER.email && password === FAKE_USER.password) {
-    const sessionData = {
-      isLoggedIn: true,
-      email: FAKE_USER.email,
-      name: FAKE_USER.name,
-    };
-
-    cookies().set('session', JSON.stringify(sessionData), {
-      httpOnly: true,
-      secure: process.env.NODE_ENV === 'production',
-      maxAge: 60 * 60 * 24 * 7, // One week
-      path: '/',
-    });
-    
-    redirect('/admin');
+  if (typeof email !== 'string' || typeof password !== 'string') {
+    // Handle case where form data is missing or not strings
+    redirect('/login?error=Invalid%20input');
+    return;
   }
 
-  // In a real app, you'd handle the error case, e.g., redirect to login with an error message.
-  // For simplicity, we'll just redirect back.
-  redirect('/login');
+  try {
+    const stmt = db.prepare('SELECT * FROM users WHERE email = ?');
+    const user = stmt.get(email) as User | undefined;
+
+    // In a real app, you would use a secure password hashing library like bcrypt
+    // For this example, we'll compare plain text passwords.
+    if (user && user.password === password) {
+      const sessionData = {
+        isLoggedIn: true,
+        userId: user.id,
+        email: user.email,
+        name: user.name,
+      };
+
+      cookies().set('session', JSON.stringify(sessionData), {
+        httpOnly: true,
+        secure: process.env.NODE_ENV === 'production',
+        maxAge: 60 * 60 * 24 * 7, // One week
+        path: '/',
+      });
+      
+      redirect('/admin');
+    } else {
+      // Failed login
+      redirect('/login?error=Invalid%20credentials');
+    }
+  } catch (error) {
+    console.error('Failed to sign in:', error);
+    redirect('/login?error=Database%20error');
+  }
 }
 
 export async function signOut() {

src/lib/db.ts

@@ -0,0 +1,16 @@
+import Database from 'better-sqlite3';
+
+// Use a file-based database in development
+const db = new Database('local.db');
+
+// Create the users table if it doesn't exist
+db.exec(`
+  CREATE TABLE IF NOT EXISTS users (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    email TEXT UNIQUE NOT NULL,
+    password TEXT NOT NULL,
+    name TEXT NOT NULL
+  )
+`);
+
+export default db;

src/lib/types.ts

@@ -0,0 +1,7 @@
+
+export interface User {
+    id: number;
+    email: string;
+    password?: string; // Should be handled securely, not sent to client
+    name: string;
+}