A RESTful API microservice built with Node.js and Express.js for analyzing internship application data and feedback.

• Top Applicants API: Get top 5 applicants by feedback score
• Daily Stats API: Get daily application statistics
• Feedback Summary API: Get feedback rating distribution

• Runtime: Node.js
• Framework: Express.js
• Middleware: CORS, JSON body parser
• Data Storage: In-memory (for demo purposes)

• Node.js (v14 or later)
• npm (comes with Node.js)

1. Clone the repository:

   git clone <repository-url>
   cd internship-analytics

2. Install dependencies:

   npm install

Start the development server:

npm start

The server will start on http://localhost:3000

• URL: /api/applicants/top
• Method: GET
• Description: Returns top 5 applicants sorted by feedback score
• Response:

  {
    "success": true,
    "data": [
      {
        "id": 4,
        "name": "Diana Prince",
        "feedbackScore": 4.9,
        "status": "accepted",
        "applicationDate": "2025-06-14"
      },
      ...
    ]
  }

• URL: /api/applicants/stats?date=YYYY-MM-DD
• Method: GET
• Query Parameters:
  • date (required): Date in YYYY-MM-DD format
• Response:

  {
    "success": true,
    "data": {
      "date": "2025-06-15",
      "total": 3,
      "accepted": 2,
      "rejected": 0,
      "pending": 1
    }
  }

• URL: /api/feedback/summary
• Method: GET
• Description: Returns count of feedback ratings
• Response:

  {
    "success": true,
    "data": {
      "positive": 4,
      "neutral": 1,
      "negative": 2,
      "total": 7
    }
  }

You can test the API using tools like Postman or curl:

# Get top applicants
curl http://localhost:3000/api/applicants/top

# Get daily stats
curl "http://localhost:3000/api/applicants/stats?date=2025-06-15"

# Get feedback summary
curl http://localhost:3000/api/feedback/summary

internship-analytics/
├── node_modules/    # Dependencies
├── .gitignore       # Git ignore file
├── package.json     # Project metadata and dependencies
├── README.md       # This file
└── server.js       # Main application file

• Add persistent database (e.g., MongoDB, PostgreSQL)
• Implement authentication and authorization
• Add request validation
• Write unit and integration tests
• Add API documentation with Swagger/OpenAPI
• Add logging
• Implement rate limiting
• Add input sanitization

This project is open source and available under the MIT License.