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Full Stack Intern Assignment (5-Hour Task)

This assignment is designed to assess a candidate's skills in Node.js, Fastify, React, Next.js, PostgreSQL, Drizzle, TypeScript, and Docker within a manageable timeframe of approximately 5 hours. The task will focus on creating a simple application that incorporates key concepts of system programming, real-time communication, and modern web development practices.

Task Overview

Objective: Build a simple task management application that allows users to create and manage tasks with real-time updates. The application should utilize the latest features of Next.js and React while demonstrating proficiency in backend and frontend development.

Requirements

1. Backend Development:

  • Use Node.js with Fastify to create a RESTful API.
  • Implement user authentication using JWT (JSON Web Tokens) for a single user (no registration needed; use hardcoded credentials).
  • Create a PostgreSQL database schema to store tasks, including fields for task title, description, status (e.g., pending, completed), and timestamps.
  • Use Drizzle as an ORM for database interactions.
  • Implement basic WebSocket communication for real-time updates when tasks are created or updated.

2. Frontend Development:

  • Build the frontend using React with the latest features of Next.js, including the app directory structure.
  • Create a simple UI that allows users to:
  • View a list of tasks.
  • Add new tasks with title and description.
  • Update the status of tasks (mark as completed).
  • See real-time updates when tasks are added or modified by other users (simulated with WebSocket).
  • Utilize React’s state management capabilities to handle the application state effectively.

3. Containerization:

  • Use Docker to containerize both the frontend and backend applications.
  • Create a docker-compose.yml file to orchestrate the services (frontend, backend, and PostgreSQL).
  • Ensure that all services can communicate effectively within the Docker network.

4. Testing:

  • Write basic unit tests for critical backend API endpoints.
  • Include at least one integration test to ensure that the frontend can successfully interact with the backend API.

5. Documentation:

  • Provide clear instructions on how to set up and run the application locally using Docker.
  • Include brief API documentation detailing endpoints and request/response formats.

Evaluation Criteria

  • Code Quality: Cleanliness, organization, and modularity of code.
  • Functionality: All required features work as expected within the time limit.
  • Performance: Efficient handling of basic concurrent requests and real-time updates.
  • Testing: Adequate coverage of unit tests and integration tests.
  • Documentation: Clarity and completeness of setup instructions and API documentation.

Deliverables

  • Complete source code hosted on a public repository (e.g., GitHub).
  • A README.md file with setup instructions and API documentation.
  • Docker configuration files for both frontend and backend.

This assignment is intended to take approximately 5 hours to complete. Candidates are encouraged to focus on delivering a functional product while demonstrating their technical skills effectively.