First Push

lib/auth.ts

@@ -0,0 +1,75 @@
+import bcrypt from 'bcryptjs';
+import { prisma } from './prisma';
+import { cookies } from 'next/headers';
+
+export async function hashPassword(password: string): Promise<string> {
+  return bcrypt.hash(password, 10);
+}
+
+export async function verifyPassword(password: string, hashedPassword: string): Promise<boolean> {
+  return bcrypt.compare(password, hashedPassword);
+}
+
+export async function createUser(email: string, password: string, name?: string) {
+  const hashedPassword = await hashPassword(password);
+  return prisma.user.create({
+    data: {
+      email,
+      password: hashedPassword,
+      name,
+    },
+  });
+}
+
+export async function getUserByEmail(email: string) {
+  return prisma.user.findUnique({
+    where: { email },
+  });
+}
+
+export async function login(email: string, password: string) {
+  const user = await getUserByEmail(email);
+  if (!user) {
+    return null;
+  }
+
+  const isValid = await verifyPassword(password, user.password);
+  if (!isValid) {
+    return null;
+  }
+
+  return user;
+}
+
+export async function getCurrentUser() {
+  const cookieStore = await cookies();
+  const userId = cookieStore.get('user_id')?.value;
+  
+  if (!userId) {
+    return null;
+  }
+
+  return prisma.user.findUnique({
+    where: { id: userId },
+    select: {
+      id: true,
+      email: true,
+      name: true,
+    },
+  });
+}
+
+export async function setSession(userId: string) {
+  const cookieStore = await cookies();
+  cookieStore.set('user_id', userId, {
+    httpOnly: true,
+    secure: process.env.NODE_ENV === 'production',
+    sameSite: 'lax',
+    maxAge: 60 * 60 * 24 * 7, // 7 days
+  });
+}
+
+export async function clearSession() {
+  const cookieStore = await cookies();
+  cookieStore.delete('user_id');
+}

lib/prisma.ts

@@ -0,0 +1,9 @@
+import { PrismaClient } from '@prisma/client'
+
+const globalForPrisma = globalThis as unknown as {
+  prisma: PrismaClient | undefined
+}
+
+export const prisma = globalForPrisma.prisma ?? new PrismaClient()
+
+if (process.env.NODE_ENV !== 'production') globalForPrisma.prisma = prisma