This is a simple News Aggregator API built using Node.js and Express.js. It allows users to register, log in, set news preferences, and retrieve news articles based on their preferences. The API uses JWT for authentication. It also implements a caching mechanism to reduce the number of calls to the external news API.

• User registration and login with password hashing and JWT-based authentication.
• Set and update news preferences.
• Fetch news articles based on user preferences.
• Cache news articles to reduce API calls.
• Periodically update cached news articles.

1. Clone the repository:

git clone https://github.com/sdshone/news-aggregatorgit
cd news-aggregator

2. Install dependencies:

npm install

3. Create a .env file in the root directory with the following environment variables:

JWT_SECRET=your_jwt_secret
NEWS_API_KEY=your_news_api_key

4. Start the server:

node app.js

The server will run on http://localhost:3000.

1. User Registration

   POST /users/register

   Registers a new user.

   curl -X POST http://localhost:3000/users/register \
   -H "Content-Type: application/json" \
   -d '{
   "name": "Clark Kent",
   "email": "[email protected]",
   "password": "Krypt()n8",
   "preferences": {
       "categories": ["general", "science"]
   }
   }'
   

   Response:

   201 Created on success

   400 Bad Request if validation fails

2. User Login

   POST /users/login

   Logs in a user.

   curl -X POST http://localhost:3000/users/login \
   -H "Content-Type: application/json" \
   -d '{
   "email": "[email protected]",
   "password": "Krypt()n8"
   }'
   
   

   Response

   {
   "token": "<JWT_TOKEN>"
   }
   

3. Get User Preferences

   GET /users/preferences

   Retrieves the news preferences for the logged-in user.

   curl -X GET http://localhost:3000/users/preferences \
   -H "Authorization: Bearer <JWT_TOKEN>"
   

4. Update User Preferences

   PUT /users/preferences

   Updates the news preferences for the logged-in user.

   curl -X PUT http://localhost:3000/users/preferences \
   -H "Authorization: Bearer <JWT_TOKEN>" \
   -H "Content-Type: application/json" \
   -d '{
   "preferences": {
       "categories": ["science", "sports", "business", "health"]
   }
   }'
   
   

   Response:

   200 OK on success

   400 Bad Request if validation fails

5. Get News GET /news

   Fetches news articles based on the logged-in user's preferences.

   curl -X GET http://localhost:3000/news \
   -H "Authorization: Bearer <JWT_TOKEN>"