Data Center Management System

A simple and secure web-based Data Center Management System built with Next.js + Express.js.

Features

• Role-based authentication (Admin and Normal User).
• Separate Admin and User login workflows.
• Admin can:
  • Create companies and applications.
  • Create dynamic fields (text, pdf, image).
  • Insert records using dynamic fields.
  • Upload PDF contracts and images securely.
  • Create read-only users.
• Normal users can:
  • Search and filter by company and application name.
  • View records and open uploaded files.

Architecture

• Frontend: Next.js App Router pages in app/
• Backend API: Express routes in server.js
• Storage:
  • JSON file database: data/db.json
  • Uploaded assets: public/uploads/
• Auth:
  • Password hashing with PBKDF2
  • JWT in HTTP-only cookie
  • RBAC middleware (admin, user)

Data Model (simple structured design)

• users: id, username, passwordHash, role
• companies: id, name
• applications: id, companyId, name
• fields: id, applicationId, name, type
• records: id, applicationId, values(dynamic by field id)

Run locally

npm install
npm run dev

Open http://localhost:3000.

Default Admin account:

• username: admin
• password: admin123

Change admin credentials and JWT_SECRET in production.