feat: add libraries and utilities

1 files changed, 87 insertions, 0 deletions

diff --git a/src/lib/auth.ts b/src/lib/auth.ts
new file mode 100644
index 0000000..7681009
--- /dev/null
+++ b/src/lib/auth.ts
@@ -0,0 +1,87 @@
+import NextAuth, { type NextAuthOptions } from "next-auth"
+import CredentialsProvider from "next-auth/providers/credentials"
+import { MongoDBAdapter } from "@auth/mongodb-adapter"
+import { MongoClient } from "mongodb"
+import bcrypt from "bcryptjs"
+import dbConnect from "./mongodb"
+import User from "@/model/User"
+import { loginSchema } from "./validation"
+
+const client = new MongoClient(process.env.MONGODB_URI!)
+
+export const authOptions: NextAuthOptions = {
+  adapter: MongoDBAdapter(client),
+  providers: [
+    CredentialsProvider({
+      name: "credentials",
+      credentials: {
+        email: { label: "Email", type: "email" },
+        password: { label: "Password", type: "password" }
+      },
+      async authorize(credentials) {
+        if (!credentials?.email || !credentials?.password) {
+          return null
+        }
+
+        // Validate and sanitize with Zod
+        const result = loginSchema.safeParse(credentials)
+        
+        if (!result.success) {
+          return null
+        }
+
+        const { email, password } = result.data
+
+        await dbConnect()
+        
+        const user = await User.findOne({ email })
+        if (!user) {
+          return null
+        }
+
+        const isPasswordValid = await bcrypt.compare(password, user.password)
+        if (!isPasswordValid) {
+          return null
+        }
+
+        return {
+          id: user._id.toString(),
+          email: user.email,
+          name: user.name,
+          image: user.profileImage?.url || null,
+        }
+      }
+    })
+  ],
+  session: {
+    strategy: "jwt" as const
+  },
+  callbacks: {
+    async jwt({ token, user }: { token: any; user: any }) {
+      if (user) {
+        token.id = user.id
+      }
+      return token
+    },
+    async session({ session, token }: { session: any; token: any }) {
+      if (token) {
+        session.user.id = token.id as string
+        
+        // Fetch latest user data from database to get current profile image
+        await dbConnect()
+        const currentUser = await User.findById(token.id)
+        if (currentUser) {
+          session.user.name = currentUser.name
+          session.user.email = currentUser.email
+          session.user.image = currentUser.profileImage?.url || null
+        }
+      }
+      return session
+    },
+  },
+  pages: {
+    signIn: "/login",
+  },
+}
+
+export default NextAuth(authOptions) 
\ No newline at end of file