🚀 Janitri Backend Assignment (Node.js + Express )

This is a RESTful API for managing users, patients, and heart rate data, built using Node.js, Express, and MongoDB. The system allows user registration & login, patient management, and heart rate data tracking.

🛠 Setup & Installation

1️⃣ Clone the Repository

git clone https://github.com/Vt221001/janitri_Backend.git
cd janitri-backend

2️⃣ Install Dependencies

npm install

3️⃣ Configure Environment Variables

Create a .env file in the root directory and add:

MONGO_URI= 
ACCESS_TOKEN_SECRET = 
REFRESH_TOKEN_SECRET = 

### **4️⃣ Start the Server**
```sh
npm start

Server will run at: http://localhost:3000

---

🔥 API Documentation

📌 User APIs

Method	Endpoint	Description
POST	/api/users/register	Register a new user
POST	/api/users/login	Login user

📝 User Registration (POST /api/users/register)

Request Body:

{
  "name": "John Doe",
  "email": "john@example.com",
  "password": "securepassword"
}

Response:

{
    "statusCode": 201,
    "data": {
        "name": "John Doe",
        "email": "johndo1e@example.com",
        "password": "$2a$10$q8IcIBnYNWNujC6VZAhUn.7w1wUxw7KiqtrBXHnImBf0bf.xiSooK",
        "refreshToken": "",
        "_id": "67ac40a0dbb8d04267d799d3",
        "createdAt": "2025-02-12T06:33:04.811Z",
        "updatedAt": "2025-02-12T06:33:04.811Z",
        "__v": 0
    },
    "message": "User created successfully",
    "success": true
}

📝 User Login (POST /api/users/login)

Request Body:

{
  "email": "john@example.com",
  "password": "securepassword"
}

Response:

{
    "statusCode": 200,
    "data": {
        "user": {
            "_id": "67ac29be8ea3265f42962892",
            "name": "John Doe",
            "email": "johndoe@example.com",
            "createdAt": "2025-02-12T04:55:26.240Z",
            "updatedAt": "2025-02-12T06:34:28.414Z",
            "__v": 0,
            "refreshToken": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjY3YWMyOWJlOGVhMzI2NWY0Mjk2Mjg5MiIsImlhdCI6MTczOTM0MjA2OCwiZXhwIjoxNzQxMDcwMDY4fQ.sQKmkS5xwVEac63lfuuhA5fbwaMkICxMkBjnrv8AgLI"
        },
        "accessToken": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjY3YWMyOWJlOGVhMzI2NWY0Mjk2Mjg5MiIsImlhdCI6MTczOTM0MjA2OCwiZXhwIjoxNzM5OTQ2ODY4fQ.4shTmWSEZy2dhqBgyjIHssVlXonDS0BxuDrE8Oxl7pc",
        "refreshToken": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjY3YWMyOWJlOGVhMzI2NWY0Mjk2Mjg5MiIsImlhdCI6MTczOTM0MjA2OCwiZXhwIjoxNzQxMDcwMDY4fQ.sQKmkS5xwVEac63lfuuhA5fbwaMkICxMkBjnrv8AgLI"
    },
    "message": "User logged in successfully",
    "success": true
}

---

📌 Patient APIs

Method	Endpoint	Description
POST	/api/patients	Add a new patient
GET	/api/patients/:patientId	Get patient details

📝 Add Patient (POST /api/patients)

Request Body:

{
  "name": "Amit Sharma",
  "age": 28,
  "gender": "Male",
  "createdBy": "67ac29be8ea3265f42962891"
}

**Response:**
```json
{
    "statusCode": 201,
    "data": {
        "name": "Amit Sharma",
        "age": 28,
        "gender": "Male",
        "createdBy": "67ac29be8ea3265f42962892",
        "_id": "67ac414adbb8d04267d799dc",
        "createdAt": "2025-02-12T06:35:54.559Z",
        "updatedAt": "2025-02-12T06:35:54.559Z",
        "__v": 0
    },
    "message": "Patient created successfully",
    "success": true
}

📝 Get Patient Details (GET /api/patients/:patientId)

Response:

{
    "statusCode": 200,
    "data": [
        {
            "_id": "67ac37aa1b05718114c7a199",
            "name": "Amit Sharma",
            "age": 28,
            "gender": "Male",
            "createdBy": "67ac29be8ea3265f42962892",
            "createdAt": "2025-02-12T05:54:50.626Z",
            "updatedAt": "2025-02-12T05:54:50.626Z",
            "__v": 0
        },
        {
            "_id": "67ac414adbb8d04267d799dc",
            "name": "Amit Sharma",
            "age": 28,
            "gender": "Male",
            "createdBy": "67ac29be8ea3265f42962892",
            "createdAt": "2025-02-12T06:35:54.559Z",
            "updatedAt": "2025-02-12T06:35:54.559Z",
            "__v": 0
        }
    ],
    "message": "Patients fetched",
    "success": true
}

---

📌 Heart Rate APIs

Method	Endpoint	Description
POST	/api/heartrate	Add heart rate data
GET	/api/heartrate/:patientId	Get heart rate data for a patient
DELETE	/api/heartrate/:heartRateId	Delete heart rate record

📝 Add Heart Rate Data (POST /api/heartrate)

Request Body:

{
  "patient": "67ac37aa1b05718114c7a199",
  "bpm": 75,
  "recordAt": "2025-02-12T14:00:00Z"
}

Response:

{
    "statusCode": 201,
    "data": {
        "patient": "67ac37aa1b05718114c7a199",
        "bpm": 75,
        "recordAt": "2025-02-12T14:00:00.000Z",
        "_id": "67ac3c20fc1316ddbb003307",
        "__v": 0
    },
    "message": "HeartRate Added successfully",
    "success": true
}

📝 Get Heart Rate Data (GET /api/heartrate/:patientId)

Response:

{
    "statusCode": 200,
    "data": [
        {
            "_id": "67ac3bc91681c277e67a5c3c",
            "patient": "67ac37aa1b05718114c7a199",
            "bpm": 75,
            "recordAt": "2025-02-12T14:00:00.000Z",
            "__v": 0
        },
        {
            "_id": "67ac3c20fc1316ddbb003307",
            "patient": "67ac37aa1b05718114c7a199",
            "bpm": 75,
            "recordAt": "2025-02-12T14:00:00.000Z",
            "__v": 0
        }
    ],
    "message": "HeartRates fetched",
    "success": true
}

📝 Delete Heart Rate Record (DELETE /api/heartrate/:heartRateId)

Response:

{
    "statusCode": 200,
    "data": null,
    "message": "HeartRate deleted",
    "success": true
}

---

🚀 Technologies Used

• Backend: Node.js, Express.js
• Database: MongoDB (Mongoose ORM)
• Validation: JOI
• Error Handling: Custom Middleware
• Environment Variables: dotenv

---

📌 Assumptions & Decisions

1. Authentication is basic (only email-password )JWT bcrtjs.
2. Heart rate data does not require real-time updates (can be fetched via API calls).
3. Patients and heart rate data are linked using patientId.

---

• ✅ JWT-based authentication.

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📩 Submission Details

• GitHub Repository: [https://github.com/Vt221001/janitri_Backend]