auth, trips and join trips

lib/auth.ts

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+import { AuthOptions } from "next-auth";
+import CredentialsProvider from "next-auth/providers/credentials";
+import bcrypt from "bcryptjs";
+import { prisma } from "@/lib/prisma";
+
+export const authOptions: AuthOptions = {
+  providers: [
+    CredentialsProvider({
+      name: "credentials",
+      credentials: {
+        email: { label: "Email", type: "email" },
+        password: { label: "Password", type: "password" },
+      },
+      async authorize(credentials) {
+        if (!credentials?.email || !credentials?.password) {
+          throw new Error("Email dan password harus diisi");
+        }
+
+        const user = await prisma.user.findUnique({
+          where: { email: credentials.email },
+        });
+
+        if (!user) {
+          throw new Error("Email tidak ditemukan");
+        }
+
+        const isPasswordValid = await bcrypt.compare(
+          credentials.password,
+          user.password
+        );
+
+        if (!isPasswordValid) {
+          throw new Error("Password salah");
+        }
+
+        return {
+          id: user.id,
+          name: user.name,
+          email: user.email,
+          image: user.image,
+        };
+      },
+    }),
+  ],
+  session: {
+    strategy: "jwt",
+  },
+  callbacks: {
+    async jwt({ token, user }) {
+      if (user) {
+        token.id = user.id;
+      }
+      return token;
+    },
+    async session({ session, token }) {
+      if (session.user) {
+        session.user.id = token.id as string;
+      }
+      return session;
+    },
+  },
+  pages: {
+    signIn: "/login",
+  },
+  secret: process.env.NEXTAUTH_SECRET,
+};

lib/prisma.ts

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+import { PrismaClient } from "@/app/generated/prisma/client";
+import { PrismaPg } from "@prisma/adapter-pg";
+
+const globalForPrisma = globalThis as unknown as {
+  prisma: PrismaClient | undefined;
+};
+
+function createPrismaClient() {
+  const adapter = new PrismaPg({
+    connectionString: process.env.DATABASE_URL!,
+  });
+  return new PrismaClient({ adapter });
+}
+
+export const prisma = globalForPrisma.prisma ?? createPrismaClient();
+
+if (process.env.NODE_ENV !== "production") {
+  globalForPrisma.prisma = prisma;
+}

lib/utils.ts

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+import { clsx, type ClassValue } from "clsx";
+
+export function cn(...inputs: ClassValue[]) {
+  return clsx(inputs);
+}
+
+export function formatRupiah(amount: number): string {
+  return new Intl.NumberFormat("id-ID", {
+    style: "currency",
+    currency: "IDR",
+    minimumFractionDigits: 0,
+  }).format(amount);
+}
+
+export function formatDate(date: Date | string): string {
+  return new Intl.DateTimeFormat("id-ID", {
+    dateStyle: "long",
+  }).format(new Date(date));
+}