The movie recommendation system is a feature that suggests movies to users based on their viewing history and preferences. This feature aims to enhance the user experience by providing personalized movie recommendations.

// Calculate similarity between users const similarUsers = await User.find().populate('ratings'); const similarities = similarUsers.map((similarUser) => { const similarUserRatings = similarUser.ratings; const similarity = calculateSimilarity(userRatings, similarUserRatings); return { user: similarUser, similarity }; });

const movieSchema = new mongoose.Schema({ title: String, genre: String, ratings: [{ type: mongoose.Schema.Types.ObjectId, ref: 'MovieRating' }] });

const userSchema = new mongoose.Schema({ name: String, email: String, password: String, movieHistory: [{ type: mongoose.Schema.Types.ObjectId, ref: 'Movie' }], ratings: [{ type: mongoose.Schema.Types.ObjectId, ref: 'MovieRating' }] });

module.exports = recommendMovies; // api.js const express = require('express'); const router = express.Router(); const recommendMovies = require('./recommendation.algorithm');

router.get('/recommendations', async (req, res) => { const userId = req.query.userId; const recommendedMovies = await recommendMovies(userId); res.json(recommendedMovies); });

// Return top 5 recommended movies return recommendedMovies.slice(0, 5); };

module.exports = Movie; // recommendation.algorithm.js const User = require('./user.model'); const Movie = require('./movie.model');