const User = mongoose.model('User', userSchema);

import React, { useState, useEffect } from 'react'; import axios from 'axios';

mongoose.connect('mongodb://localhost/banflixvip', { useNewUrlParser: true, useUnifiedTopology: true }); banflixvip

// Collaborative filtering const similarUsers = await User.find({ viewingHistory: { $in: viewingHistory } }); const recommendedContent = similarUsers.reduce((acc, similarUser) => { return acc.concat(similarUser.viewingHistory); }, []);

const app = express();

// Content-based filtering const contentMetadata = await ContentMetadata.find({ genres: { $in: preferences } }); const recommendedContentBased = contentMetadata.reduce((acc, content) => { return acc.concat(content.id); }, []);

return recommendedContentHybrid; };

useEffect(() => { axios.get('/api/recommendations') .then((response) => { setRecommendedContent(response.data); }) .catch((error) => { console.error(error); }); }, []);