from collections import defaultdict

def map_func(inputs):
    results = defaultdict(list)
    for input in inputs:
        words = input.split()
        for word in words:
            results[word].append(1)
    return results.items()

def reduce_func(item):
    word, occurrences = item
    return (word, sum(occurrences))

def map_reduce(inputs):
    mapped = map_func(inputs)
    grouped = defaultdict(list)
    for key, value in mapped:
        grouped[key].append(value)
    return [reduce_func(group) for group in grouped.items()]

inputs = ["apple pear banana", "pear banana", "apple pear", "apple", "pear banana apple"]
print(map_reduce(inputs))

import subprocess

def transcode_video(input_file, output_file):
    cmd = ['ffmpeg', '-i', input_file, '-c:v', 'libx264', '-crf', '23', '-c:a', 'aac', output_file]
    subprocess.run(cmd)

input_file = "input.mp4"
output_file = "output.mp4"
transcode_video(input_file, output_file)

import socket

RTSP_PORT = 554

def start_server():
    server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    server_socket.bind(('', RTSP_PORT))
    server_socket.listen(1)

    print("RTSP Server started on port {}".format(RTSP_PORT))

    while True:
        client_socket, address = server_socket.accept()
        print("Accepted connection from {}".format(address))
        data = client_socket.recv(1024)
        print("Received data: {}".format(data.decode()))
        client_socket.sendall(b"RTSP/1.0 200 OK\r\n\r\n")
        client_socket.close()

if __name__ == "__main__":
    start_server()

import redis

class SessionsService:
    def __init__(self):
        self.db = redis.StrictRedis(host='localhost', port=6379, db=0)

    def create_session(self, user_id, session_id):
        self.db.set(user_id, session_id)

    def get_session(self, user_id):
        return self.db.get(user_id)

from flask import Flask, Response, request
import cv2

app = Flask(__name__)

@app.route('/stream')
def stream():
    video_path = 'path/to/video.mp4'
    cap = cv2.VideoCapture(video_path)

    def gen():
        while True:
            ret, frame = cap.read()

            if not ret:
                break

            ret, jpeg = cv2.imencode('.jpg', frame)

            yield (b'--frame\r\n'
                   b'Content-Type: image/jpeg\r\n\r\n' + jpeg.tobytes() + b'\r\n')

    return Response(gen(), mimetype='multipart/x-mixed-replace; boundary=frame')

import pymongo

class UserProfileService:
    def __init__(self):
        self.client = pymongo.MongoClient('mongodb://localhost:27017/')
        self.db = self.client['netflix']

    def create_user(self, user):
        self.db.users.insert_one(user)

    def get_user(self, user_id):
        return self.db.users.find_one({'id': user_id})

    def update_user(self, user_id, update):
        self.db.users.update_one({'id': user_id}, {'$set': update})

from elasticsearch import Elasticsearch

class SearchService:
    def __init__(self):
        self.es = Elasticsearch()

    def search(self, query):
        res = self.es.search(index='netflix', body={
            'query': {
                'multi_match': {
                    'query': query,
                    'fields': ['title^3', 'description']
                }
            }
        })

        hits = res['hits']['hits']
        results = [{'title': hit['_source']['title'], 'description': hit['_source']['description']} for hit in hits]

        return results

import os
from moviepy.editor import VideoFileClip

class MediaService:
    def __init__(self):
        self.video_dir = 'path/to/videos/'

    def upload_video(self, file):
        filename = file.filename
        file.save(os.path.join(self.video_dir, filename))

        clip = VideoFileClip(os.path.join(self.video_dir, filename))
        clip.resize(height=360).write_videofile(os.path.join(self.video_dir, filename + '.mp4'), fps=24)

        return filename

import pymongo
import datetime

class AnalyticsService:
    def __init__(self):
        self.client = pymongo.MongoClient('mongodb://localhost:27017/')
        self.db = self.client['netflix']

    def log_event(self, event_type, user_id=None, video_id=None):
        event = {
            'type': event_type,
            'timestamp': datetime.datetime.utcnow(),
        }

        if user_id:
            event['user_id'] = user_id

        if video_id:
            event['video_id'] = video_id

        self.db.events.insert_one(event)

    def get_events_by_type(self, event_type):
        return list(self.db.events.find({'type': event_type}))

import flask
import json

app = flask.Flask(__name__)

# Define an endpoint for retrieving information about a particular movie or TV show
@app.route("/content/<content_id>", methods=["GET"])
def get_content_info(content_id):
    # Code to retrieve information about the movie or TV show from the database
    content_info = {
        "content_id": content_id,
        "title": "Example Title",
        "description": "This is an example movie or TV show",
        "release_date": "2022-01-01",
        "genres": ["Action", "Adventure"],
    }

    return flask.jsonify(content_info)

# Define an endpoint for retrieving the list of recommended content for a particular user
@app.route("/recommendations/<user_id>", methods=["GET"])
def get_recommendations(user_id):
    # Code to retrieve a list of recommended movies or TV shows for the user
    recommendations = [
        {
            "content_id": 1,
            "title": "Example Recommendation 1",
        },
        {
            "content_id": 2,
            "title": "Example Recommendation 2",
        },
    ]

    return flask.jsonify(recommendations)

# Example usage
if __name__ == "__main__":
    app.run()

import java.util.*;

public class User {
    private String username;
    private String password;
    private String email;
    // ...

    public User(String username, String password, String email) {
        this.username = username;
        this.password = password;
        this.email = email;
    }

    // Getters and setters
    // ...
}

class UserManager {
    private Map<String, User> users;

    public UserManager() {
        this.users = new HashMap<>();
    }

    public void registerUser(String username, String password, String email) {
        if (!users.containsKey(username)) {
            User newUser = new User(username, password, email);
            users.put(username, newUser);
            System.out.println("User registered successfully.");
        } else {
            System.out.println("Username already exists. Please choose a different username.");
        }
    }

    public User loginUser(String username, String password) {
        User user = users.get(username);
        if (user != null && user.getPassword().equals(password)) {
            System.out.println("Login successful.");
            return user;
        } else {
            System.out.println("Invalid username or password.");
            return null;
        }
    }

    // Other user management methods
    // ...
}

class Media {
    private String mediaId;
    private String title;
    private String description;
    private String url;
    // ...

    public Media(String mediaId, String title, String description, String url) {
        this.mediaId = mediaId;
        this.title = title;
        this.description = description;
        this.url = url;
    }

    // Getters and setters
    // ...
}

class MediaCatalog {
    private Map<String, List<Media>> mediaCatalog;

    public MediaCatalog() {
        this.mediaCatalog = new HashMap<>();
    }

    public void addMedia(String category, Media media) {
        List<Media> mediaList = mediaCatalog.getOrDefault(category, new ArrayList<>());
        mediaList.add(media);
        mediaCatalog.put(category, mediaList);
    }

    public List<Media> getMediaByCategory(String category) {
        return mediaCatalog.getOrDefault(category, new ArrayList<>());
    }

    // Other media catalog methods
    // ...
}

class StreamingService {
    private UserManager userManager;
    private MediaCatalog mediaCatalog;
    // ...

    public StreamingService() {
        this.userManager = new UserManager();
        this.mediaCatalog = new MediaCatalog();
        // ...
    }

    public void registerUser(String username, String password, String email) {
        userManager.registerUser(username, password, email);
    }

    public void loginUser(String username, String password) {
        userManager.loginUser(username, password);
    }

    public void addMedia(String category, Media media) {
        mediaCatalog.addMedia(category, media);
    }

    public List<Media> getMediaByCategory(String category) {
        return mediaCatalog.getMediaByCategory(category);
    }

    // Other methods for media retrieval, playback, etc.
    // ...
}

public class NetflixApp {
    public static void main(String[] args) {
        // Create an instance of the Netflix app
        StreamingService netflix = new StreamingService();

        // Register a new user
        netflix.registerUser("john_doe", "password123", "[email protected]");

        // Login with the registered user
        User loggedInUser = netflix.loginUser("john_doe", "password123");

        // Add movies to the catalog
        Media movie1 = new Media("movie_1", "Movie 1", "An awesome movie", "https://example.com/movie1.mp4");
        Media movie2 = new Media("movie_2", "Movie 2", "Another amazing movie", "https://example.com/movie2.mp4");
        netflix.addMedia("Movies", movie1);
        netflix.addMedia("Movies", movie2);

        // Get movies by category
        List<Media> movies = netflix.getMediaByCategory("Movies");
        for (Media movie : movies) {
            System.out.println(movie.getTitle());
        }

        // Other actions and functionalities of the Netflix app can be added here
    }
}

from flask import Flask, request, jsonify

app = Flask(__name__)

# Sessions Service API
@app.route('/sessions', methods=['POST'])
def create_session():
    # create a new session for the user and return session ID
    # actual implementation may involve authentication and session management
    return jsonify({'session_id': 'abc123'})

@app.route('/sessions/<session_id>', methods=['GET'])
def get_session(session_id):
    # return session information for the specified session ID
    # actual implementation may involve session management and validation
    return jsonify({'session_id': session_id, 'user_id': 'user123'})

# Stream Service API
@app.route('/videos/<video_id>/stream', methods=['GET'])
def stream_video(video_id):
    # stream the specified video
    # actual implementation may involve video streaming and access control
    return 'Streaming video {}'.format(video_id)

# User Profile Service API
@app.route('/users/<user_id>', methods=['GET'])
def get_user_profile(user_id):
    # return the profile information for the specified user ID
    # actual implementation may involve retrieving profile information from a database
    return jsonify({'user_id': user_id, 'name': 'John Doe', 'email': '[email protected]'})

@app.route('/users/<user_id>', methods=['PUT'])
def update_user_profile(user_id):
    # update the profile information for the specified user ID
    # actual implementation may involve authentication and database updates
    return jsonify({'user_id': user_id, 'name': 'John Doe', 'email': '[email protected]'})

# Search Service API
@app.route('/search', methods=['GET'])
def search_videos():
    # search for videos based on the provided query parameters
    # actual implementation may involve searching a database or using a search engine
    query = request.args.get('q')
    return jsonify({'query': query, 'results': ['video123', 'video456']})

# Media Service API
@app.route('/videos', methods=['POST'])
def upload_video():
    # upload a new video and return the video ID
    # actual implementation may involve handling file uploads and database updates
    return jsonify({'video_id': 'video123'})

# Analytics Service API
@app.route('/events', methods=['POST'])
def log_event():
    # log a new event and return the event ID
    # actual implementation may involve database updates
    event_type = request.json['type']
    user_id = request.json.get('user_id')
    video_id = request.json.get('video_id')
    # log event in database
    return jsonify({'event_id': 'event123'})

@app.route('/events/<event_type>', methods=['GET'])
def get_events_by_type(event_type):
    # retrieve all events with the specified type
    # actual implementation may involve retrieving events from a database
    return jsonify({'event_type': event_type, 'events': [{'timestamp': '2023-02-19T10:15:00Z', 'user_id': 'user123', 'video_id': 'video123'}]})

if __name__ == '__main__':
    app.run(debug=True)

import requests
import json

# Define the base URL for the Netflix API
base_url = "https://api.netflix.com/"

# Define the endpoint for retrieving information about a particular movie or TV show
content_info_endpoint = "content/{content_id}"

# Define the endpoint for retrieving recommendations for a particular user
recommendation_endpoint = "recommendations/{user_id}"

# Define a function to retrieve information about a particular movie or TV show
def get_content_info(content_id):
    url = base_url + content_info_endpoint.format(content_id=content_id)
    response = requests.get(url)
    if response.status_code == 200:
        content_info = json.loads(response.text)
        return content_info
    else:
        raise Exception("Failed to retrieve content information")

# Define a function to retrieve recommendations for a particular user
def get_recommendations(user_id):
    url = base_url + recommendation_endpoint.format(user_id=user_id)
    response = requests.get(url)
    if response.status_code == 200:
        recommendations = json.loads(response.text)
        return recommendations
    else:
        raise Exception("Failed to retrieve recommendations")

# Example usage
content_info = get_content_info("12345")
recommendations = get_recommendations("67890")

print(content_info)
print(recommendations)

import requests
import webbrowser

# Get the details of a movie or TV show
response = requests.get('https://netflixroulette.net/api/api.php?title=Stranger%20Things')
details = response.json()[0]

# Open the video streaming link in a web browser
webbrowser.open(details['poster'], new=2)

import requests
import tweepy

# Get the details of a movie or TV show
response = requests.get('https://netflixroulette.net/api/api.php?title=Stranger%20Things')
details = response.json()[0]

# Authenticate with Twitter API
auth = tweepy.OAuthHandler('consumer_key', 'consumer_secret')
auth.set_access_token('access_token', 'access_token_secret')

# Create a new tweet with the video details
api = tweepy.API(auth)
tweet = f"Just watched {details['show_title']} on #Netflix! Highly recommend it! {details['poster']}"
api.update_status(tweet)

import requests
import webbrowser

# Get the details of a movie or TV show
response = requests.get('https://netflixroulette.net/api/api.php?title=Stranger%20Things')
details = response.json()[0]

# Open the Netflix customer support page in a web browser
webbrowser.open('https://help.netflix.com/en/contactus', new=2)

import requests
import sqlite3

# Connect to the SQLite database
conn = sqlite3.connect('netflix.db')

# Create a new table to store the video details
conn.execute('''
    CREATE TABLE IF NOT EXISTS netflix_videos (
        id INTEGER PRIMARY KEY,
        title TEXT,
        director TEXT,
        cast TEXT,
        rating FLOAT,
        poster TEXT
    )
''')

# Get the details of a movie or TV show
response = requests.get('https://netflixroulette.net/api/api.php?title=Stranger%20Things')
details = response.json()[0]

# Insert the video details into the database
conn.execute('''
    INSERT INTO netflix_videos (id, title, director, cast, rating, poster)
    VALUES (?, ?, ?, ?, ?, ?)
''', (details['show_id'], details['show_title'], details['director'], details['show_cast'], details['rating'], details['poster']))

# Commit the changes to the database
conn.commit()

# Close the database connection
conn.close()

import requests

# Search for videos using a title or tag
query = 'stranger things'
response = requests.get(f'https://netflixroulette.net/api/api.php?{query}')
videos = response.json()

# Print the details of the matching videos
for video in videos:
    print(f'{video["show_title"]} ({video["release_year"]}): {video["rating"]}')

import requests
import sqlite3

# Connect to the SQLite database
conn = sqlite3.connect('netflix.db')

# Create a new table to store the favorite videos
conn.execute('''
    CREATE TABLE IF NOT EXISTS netflix_favorites (
        id INTEGER PRIMARY KEY,
        title TEXT,
        director TEXT,
        cast TEXT,
        rating FLOAT,
        poster TEXT
    )
''')

# Get the details of a movie or TV show
response = requests.get('https://netflixroulette.net/api/api.php?title=Stranger%20Things')
details = response.json()[0]

# Insert the video details into the favorites table
conn.execute('''
    INSERT INTO netflix_favorites (id, title, director, cast, rating, poster)
    VALUES (?, ?, ?, ?, ?, ?)
''', (details['show_id'], details['show_title'], details['director'], details['show_cast'], details['rating'], details['poster']))

# Commit the changes to the database
conn.commit()

# Close the database connection
conn.close()

from flask import Flask, request, jsonify

app = Flask(__name__)

users = {}

@app.route('/register', methods=['POST'])
def register_user():
    username = request.json['username']
    password = request.json['password']
    
    # Store user credentials in the database
    users[username] = password
    
    return jsonify({'message': 'User registered successfully'})

@app.route('/login', methods=['POST'])
def login_user():
    username = request.json['username']
    password = request.json['password']
    
    # Check if the user exists and the password is correct
    if username in users and users[username] == password:
        return jsonify({'message': 'Login successful'})
    
    return jsonify({'message': 'Invalid credentials'})

if __name__ == '__main__':
    app.run()

class UserProfile:
    def __init__(self, username):
        self.username = username
        self.preferences = {}
    
    def update_preferences(self, new_preferences):
        self.preferences.update(new_preferences)
    
    def get_recommendations(self):
        # Retrieve personalized recommendations based on user preferences
        # Implementation omitted for brevity
        recommendations = get_recommendations_from_service(self.preferences)
        return recommendations

# Example usage
username = 'user123'
user_profile = UserProfile(username)
user_profile.update_preferences({'genre': 'action', 'language': 'English'})
recommendations = user_profile.get_recommendations()

from flask import Flask, request, send_from_directory

app = Flask(__name__)

@app.route('/stream/<path:video_path>')
def stream_video(video_path):
    video_directory = '/path/to/video/files'
    
    # Serve the video file
    return send_from_directory(video_directory, video_path)

if __name__ == '__main__':
    app.run()

BUFFER_SIZE = 4096

def buffer_video(video_path):
    with open(video_path, 'rb') as video_file:
        while True:
            chunk = video_file.read(BUFFER_SIZE)
            
            if not chunk:
                break
            
            # Buffer the video chunk
            buffer_video_chunk(chunk)

def select_video_quality(network_speed):
    if network_speed >= 10:
        return '1080p'
    elif network_speed >= 5:
        return '720p'
    else:
        return '480p'

from surprise import Dataset, Reader, KNNBasic

# Load the dataset
data = Dataset.load_builtin('ml-100k')

# Build the user-item rating matrix
trainset = data.build_full_trainset()

# Define the collaborative filtering algorithm
algo = KNNBasic()

# Train the algorithm on the dataset
algo.fit(trainset)

# Get recommendations for a user
user_id = 'user123'
items_to_recommend = algo.get_recommendations(user_id)

def get_related_content(item_id):
    # Retrieve related content based on item-item similarity
    # Implementation omitted for brevity
    related_content = get_related_content_from_service(item_id)
    return related_content

from elasticsearch import Elasticsearch

# Create an instance of Elasticsearch client
es = Elasticsearch()

# Index a document
def index_document(document):
    es.index(index='content_index', body=document)

# Search for documents
def search_documents(query):
    results = es.search(index='content_index', body={'query': {'match': {'title': query}}})
    return results['hits']['hits']

def rank_results(results):
    # Rank search results based on relevance and popularity
    # Implementation omitted for brevity
    ranked_results = rank_results_based_on_algorithm(results)
    return ranked_results

from flask import Flask
from flask_caching import Cache

app = Flask(__name__)
cache = Cache(app)

@app.route('/content/<content_id>')
@cache.cached(timeout=3600)  # Cache the response for 1 hour
def get_content(content_id):
    # Retrieve and return the content
    return retrieve_content(content_id)

if __name__ == '__main__':
    app.run()

from flask import Flask
from flask_caching import Cache

app = Flask(__name__)
cache = Cache(app)

@app.route('/content/<content_id>')
@cache.cached(timeout=3600)  # Cache the response for 1 hour
def get_content(content_id):
    # Retrieve and return the content
    return retrieve_content(content_id)

if __name__ == '__main__':
    app.run()

# Nginx configuration file
http {
    upstream backend {
        server backend1.example.com;
        server backend2.example.com;
        server backend3.example.com;
    }
    
    server {
        listen 80;
        
        location / {
            proxy_pass http://backend;
        }
    }
}

from flask import Flask, send_file

app = Flask(__name__)

@app.route('/content/<content_id>/download')
def download_content(content_id):
    # Retrieve the content file path
    file_path = get_content_file_path(content_id)
    
    # Send the file for download
    return send_file(file_path, as_attachment=True)

if __name__ == '__main__':
    app.run()

from prometheus_client import Counter, start_http_server

# Define a counter metric
video_views = Counter('video_views', 'Number of video views')

# Increment the counter when a video is viewed
@application.route('/play_video/<video_id>')
def play_video(video_id):
    # Play the video
    video_views.inc()
    return 'Playing video: {}'.format(video_id)

if __name__ == '__main__':
    # Start the Prometheus HTTP server
    start_http_server(8000)
    application.run()

import logging

# Configure the logging
logging.basicConfig(filename='app.log', level=logging.INFO)

# Log an info message
logging.info('This is an informational message')

# Log an error message
try:
    # Perform an operation that may raise an exception
    result = 1 / 0
except Exception as e:
    # Log the error message and exception stack trace
    logging.error('An error occurred: {}'.format(e), exc_info=True)

def ingest_content(video_path, metadata):
    # Process the video content and metadata
    process_video(video_path)
    process_metadata(metadata)
    store_content(video_path, metadata)

import boto3

# Create an S3 client
s3_client = boto3.client('s3')

def upload_content(video_path, bucket_name, object_name):
    # Upload the video to S3
    s3_client.upload_file(video_path, bucket_name, object_name)

def download_content(bucket_name, object_name, local_path):
    # Download the video from S3
    s3_client.download_file(bucket_name, object_name, local_path)

import ffmpeg

def transcode_video(input_file, output_file, output_format):
    # Transcode the video to the specified format
    ffmpeg.input(input_file).output(output_file, format=output_format).run()

def generate_manifest(output_files):
    # Generate the adaptive bitrate streaming manifest file
    manifest = '#EXTM3U\n'
    for file in output_files:
        manifest += '#EXT-X-STREAM-INF:BANDWIDTH={},RESOLUTION={}\n{}\n'.format(file['bitrate'], file['resolution'], file['filename'])
    return manifest

def register_user(username, password):
    # Register the user in the database
    user_id = save_user_to_database(username, password)
    return user_id

def login_user(username, password):
    # Validate the user's credentials
    user_id = validate_user_credentials(username, password)
    return user_id

def authorize_user(user_id, role):
    # Check if the user has the required role
    is_authorized = check_user_role(user_id, role)
    return is_authorized

def update_user_profile(user_id, profile_data):
    # Update the user's profile in the database
    update_profile_in_database(user_id, profile_data)

def get_user_recommendations(user_id):
    # Retrieve personalized content recommendations for the user
    recommendations = generate_recommendations(user_id)
    return recommendations

def create_user_profile(user_id, profile_data):
    # Create a new user profile in the database
    create_profile_in_database(user_id, profile_data)

from flask import Flask, render_template

app = Flask(__name__)

@app.route('/play_video/<video_id>')
def play_video(video_id):
    # Logic to retrieve video URL or stream
    video_url = get_video_url(video_id)
    return render_template('video.html', video_url=video_url)

if __name__ == '__main__':
    app.run()

import requests
from cachetools import LRUCache

# Create a cache with a maximum size
cache = LRUCache(maxsize=1000)

def stream_video(segment_url):
    if segment_url in cache:
        # Use the cached segment if available
        segment = cache[segment_url]
    else:
        # Download the segment and cache it
        response = requests.get(segment_url)
        segment = response.content
        cache[segment_url] = segment

    # Stream the video segment to the user
    stream_segment(segment)

import speedtest

def get_network_speed():
    # Perform a network speed test
    st = speedtest.Speedtest()
    download_speed = st.download()
    return download_speed

def select_video_quality(video_qualities):
    network_speed = get_network_speed()

    # Select the video quality based on network speed
    if network_speed < 2:
        return video_qualities['low']
    elif network_speed < 5:
        return video_qualities['medium']
    else:
        return video_qualities['high']

def get_personalized_recommendations(user_id):
    user_profile = get_user_profile(user_id)
    user_interests = user_profile['interests']

    # Perform content-based filtering to generate recommendations
    recommendations = perform_content_based_filtering(user_interests)

    return recommendations

from surprise import Dataset, Reader, KNNBasic

# Load the dataset
reader = Reader(rating_scale=(1, 5))
data = Dataset.load_from_df(ratings_df, reader)

# Train the model
trainset = data.build_full_trainset()
algo = KNNBasic()
algo.fit(trainset)

# Get recommendations for a user
user_id = 123
user_ratings = get_user_ratings(user_id)
user_items = data.build_full_trainset().ur[user_id]
recommendations = algo.get_neighbors(user_items, k=10)

from elasticsearch import Elasticsearch

# Create an Elasticsearch client
es_client = Elasticsearch()

def index_content(content_id, content_title, content_description):
    # Index the content in Elasticsearch
    document = {
        'id': content_id,
        'title': content_title,
        'description': content_description
    }
    es_client.index(index='content_index', body=document)

def search_content(query):
    # Perform a search query in Elasticsearch
    search_results = es_client.search(index='content_index', body={'query': {'match': {'title': query}}})
    return search_results['hits']['hits']

def rank_search_results(search_results):
    # Rank search results based on popularity and relevance
    ranked_results = []
    for result in search_results:
        content_id = result['_id']
        popularity_score = get_content_popularity(content_id)
        relevance_score = calculate_relevance_score(result['_score'])
        ranked_results.append({'content_id': content_id, 'popularity_score': popularity_score, 'relevance_score': relevance_score})
    ranked_results.sort(key=lambda x: (x['popularity_score'], x['relevance_score']), reverse=True)
    return ranked_results

def bulk_index_content(content_list):
    # Bulk index multiple content items in Elasticsearch
    bulk_body = []
    for content in content_list:
        document = {
            'index': {'_index': 'content_index'},
        }
        data = {
            'id': content['id'],
            'title': content['title'],
            'description': content['description']
        }
        bulk_body.append(document)
        bulk_body.append(data)
    es_client.bulk(body=bulk_body)

from flask import Flask, request, jsonify

app = Flask(__name__)

users = {}
wallets = {}
transactions = {}
orders = {}
trades = {}
notifications = {}

# User Management API
@app.route('/users', methods=['POST'])
def create_user():
    data = request.get_json()
    user_id = data['user_id']
    username = data['username']
    # Check if the user already exists
    if user_id in users:
        return jsonify({'error': 'User already exists'}), 400
    # Create a new user
    users[user_id] = {
        'username': username
    }
    return jsonify({'message': 'User created successfully'}), 201

@app.route('/login', methods=['POST'])
def login():
    data = request.get_json()
    user_id = data['user_id']
    password = data['password']
    # Check if the user exists and the password is correct
    if user_id in users and users[user_id]['password'] == password:
        return jsonify({'message': 'Login successful'}), 200
    return jsonify({'error': 'Invalid credentials'}), 401

@app.route('/users/<userId>', methods=['PATCH'])
def update_user(userId):
    data = request.get_json()
    # Update user profile information
    if userId in users:
        users[userId].update(data)
        return jsonify({'message': 'Profile updated successfully'}), 200
    return jsonify({'error': 'User not found'}), 404

@app.route('/users/<userId>', methods=['GET'])
def get_user(userId):
    # Get user profile information
    if userId in users:
        return jsonify(users[userId]), 200
    return jsonify({'error': 'User not found'}), 404

# Wallet API
@app.route('/users/<userId>/wallet', methods=['GET'])
def get_wallet_balance(userId):
    # Get wallet balance for a user
    if userId in wallets:
        return jsonify({'balance': wallets[userId]}), 200
    return jsonify({'error': 'Wallet not found'}), 404

@app.route('/users/<userId>/wallet/deposit', methods=['POST'])
def deposit_to_wallet(userId):
    data = request.get_json()
    amount = data['amount']
    # Deposit funds to a user's wallet
    if userId in wallets:
        wallets[userId] += amount
    else:
        wallets[userId] = amount
    return jsonify({'message': 'Funds deposited successfully'}), 200

@app.route('/users/<userId>/wallet/withdraw', methods=['POST'])
def withdraw_from_wallet(userId):
    data = request.get_json()
    amount = data['amount']
    # Withdraw funds from a user's wallet
    if userId in wallets and wallets[userId] >= amount:
        wallets[userId] -= amount
        return jsonify({'message': 'Funds withdrawn successfully'}), 200
    return jsonify({'error': 'Insufficient balance or wallet not found'}), 400

# Transaction API
@app.route('/users/<userId>/wallet/transaction', methods=['POST'])
def create_transaction(userId):
    data = request.get_json()
    amount = data['amount']
    # Create a new transaction for a user's wallet
    if userId in wallets and wallets[userId] >= amount:
        transaction_id = generate_transaction_id()
        transactions[transaction_id] = {
            'user_id': userId,
            'amount': amount
        }
        # Update wallet balance
        wallets[userId] -= amount
        return jsonify({'message': 'Transaction created successfully'}), 200
    return jsonify({'error': 'Insufficient balance or wallet not found'}), 400

@app.route('/transactions/<transactionId>', methods=['GET'])
def get_transaction(transactionId):
    # Get details of a specific transaction
    if transactionId in transactions:
        return jsonify(transactions[transactionId]), 200
    return jsonify({'error': 'Transaction not found'}), 404

# Order API
@app.route('/users/<userId>/orders', methods=['POST'])
def place_order(userId):
    data = request.get_json()
    cryptocurrency = data['cryptocurrency']
    quantity = data['quantity']
    price = data['price']
    # Place a new order for a user
    order_id = generate_order_id()
    orders[order_id] = {
        'user_id': userId,
        'cryptocurrency': cryptocurrency,
        'quantity': quantity,
        'price': price
    }
    return jsonify({'message': 'Order placed successfully'}), 200

@app.route('/orders/<orderId>', methods=['DELETE'])
def cancel_order(orderId):
    # Cancel a specific order
    if orderId in orders:
        del orders[orderId]
        return jsonify({'message': 'Order cancelled successfully'}), 200
    return jsonify({'error': 'Order not found'}), 404

@app.route('/users/<userId>/orders', methods=['GET'])
def get_user_orders(userId):
    # Get all orders for a user
    user_orders = []
    for order_id, order in orders.items():
        if order['user_id'] == userId:
            user_orders.append(order)
    return jsonify(user_orders), 200

# Trade API
@app.route('/orders/<orderId>/trade', methods=['POST'])
def execute_trade(orderId):
    data = request.get_json()
    buyer_id = data['buyer_id']
    seller_id = data['seller_id']
    quantity = data['quantity']
    price = data['price']
    # Execute a trade for a specific order
    if orderId in orders:
        trade_id = generate_trade_id()
        trades[trade_id] = {
            'order_id': orderId,
            'buyer_id': buyer_id,
            'seller_id': seller_id,
            'quantity': quantity,
            'price': price
        }
        # Update wallet balances
        if buyer_id in wallets:
            wallets[buyer_id] -= quantity * price
        else:
            wallets[buyer_id] = -quantity * price
        if seller_id in wallets:
            wallets[seller_id] += quantity * price
        else:
            wallets[seller_id] = quantity * price
        return jsonify({'message': 'Trade executed successfully'}), 200
    return jsonify({'error': 'Order not found'}), 404

@app.route('/trades/<tradeId>', methods=['GET'])
def get_trade(tradeId):
    # Get details of a specific trade
    if tradeId in trades:
        return jsonify(trades[tradeId]), 200
    return jsonify({'error': 'Trade not found'}), 404

# Notification API
@app.route('/users/<userId>/notifications', methods=['POST'])
def send_notification(userId):
    data = request.get_json()
    message = data['message']
    

@app.route('/users/<userId>/wallet/withdraw', methods=['POST'])
def withdraw_from_wallet(userId):
    data = request.get_json()
    amount = data['amount']
    # Withdraw funds from a user's wallet
    if userId in wallets and wallets[userId] >= amount:
        wallets[userId] -= amount
        return jsonify({'message': 'Funds withdrawn successfully'}), 200
    return jsonify({'error': 'Insufficient balance or wallet not found'}), 400

# Transaction API
@app.route('/users/<userId>/wallet/transaction', methods=['POST'])
def create_transaction(userId):
    data = request.get_json()
    amount = data['amount']
    # Create a new transaction for a user's wallet
    if userId in wallets and wallets[userId] >= amount:
        transaction_id = generate_transaction_id()
        transactions[transaction_id] = {
            'user_id': userId,
            'amount': amount
        }
        # Update wallet balance
        wallets[userId] -= amount
        return jsonify({'message': 'Transaction created successfully'}), 200
    return jsonify({'error': 'Insufficient balance or wallet not found'}), 400

@app.route('/transactions/<transactionId>', methods=['GET'])
def get_transaction(transactionId):
    # Get details of a specific transaction
    if transactionId in transactions:
        return jsonify(transactions[transactionId]), 200
    return jsonify({'error': 'Transaction not found'}), 404

# Order API
@app.route('/users/<userId>/orders', methods=['POST'])
def place_order(userId):
    data = request.get_json()
    cryptocurrency = data['cryptocurrency']
    quantity = data['quantity']
    price = data['price']
    # Place a new order for a user
    order_id = generate_order_id()
    orders[order_id] = {
        'user_id': userId,
        'cryptocurrency': cryptocurrency,
        'quantity': quantity,
        'price': price
    }
    return jsonify({'message': 'Order placed successfully'}), 200

@app.route('/orders/<orderId>', methods=['DELETE'])
def cancel_order(orderId):
    # Cancel a specific order
    if orderId in orders:
        del orders[orderId]
        return jsonify({'message': 'Order cancelled successfully'}), 200
    return jsonify({'error': 'Order not found'}), 404

@app.route('/users/<userId>/orders', methods=['GET'])
def get_user_orders(userId):
    # Get all orders for a user
    user_orders = []
    for order_id, order in orders.items():
        if order['user_id'] == userId:
            user_orders.append(order)
    return jsonify(user_orders), 200

# Trade API
@app.route('/orders/<orderId>/trade', methods=['POST'])
def execute_trade(orderId):
    data = request.get_json()
    buyer_id = data['buyer_id']
    seller_id = data['seller_id']
    quantity = data['quantity']
    price = data['price']
    # Execute a trade for a specific order
    if orderId in orders:
        trade_id = generate_trade_id()
        trades[trade_id] = {
            'order_id': orderId,
            'buyer_id': buyer_id,
            'seller_id': seller_id,
            'quantity': quantity,
            'price': price
        }
        # Update wallet balances
        if buyer_id in wallets:
            wallets[buyer_id] -= quantity * price
        else:
            wallets[buyer_id] = -quantity * price
        if seller_id in wallets:
            wallets[seller_id] += quantity * price
        else:
            wallets[seller_id] = quantity * price
        return jsonify({'message': 'Trade executed successfully'}), 200
    return jsonify({'error': 'Order not found'}), 404

@app.route('/trades/<tradeId>', methods=['GET'])
def get_trade(tradeId):
    # Get details of a specific trade
    if tradeId in trades:
        return jsonify(trades[tradeId]), 200
    return jsonify({'error': 'Trade not found'}), 404

# Notification API
@app.route('/users/<userId>/notifications', methods=['POST'])
def send_notification(userId):
    data = request.get_json()
    message = data['message']
    # Send a new notification to a user
    if userId in users:
        notification_id = generate_notification_id()
        notifications[notification_id] = {
            'user_id': userId,
            'message': message
        }
        return jsonify({'message': 'Notification sent successfully'}), 200
    return jsonify({'error': 'User not found'}), 404

@app.route('/users/<userId>/notifications', methods=['GET'])
def get_notifications(userId):
    # Get all notifications forCertainly! Here's an example of how you can complete the logic and code for each API endpoint in the given code:

```python
from flask import Flask, request, jsonify

app = Flask(__name__)

users = {}
wallets = {}
transactions = {}
orders = {}
trades = {}
notifications = {}

# User Management API
@app.route('/users', methods=['POST'])
def create_user():
    data = request.get_json()
    user_id = data['user_id']
    username = data['username']
    # Check if the user already exists
    if user_id in users:
        return jsonify({'error': 'User already exists'}), 400
    # Create a new user
    users[user_id] = {
        'username': username
    }
    return jsonify({'message': 'User created successfully'}), 201

@app.route('/login', methods=['POST'])
def login():
    data = request.get_json()
    user_id = data['user_id']
    password = data['password']
    # Check if the user exists and the password is correct
    if user_id in users and users[user_id]['password'] == password:
        return jsonify({'message': 'Login successful'}), 200
    return jsonify({'error': 'Invalid credentials'}), 401

@app.route('/users/<userId>', methods=['PATCH'])
def update_user(userId):
    data = request.get_json()
    # Update user profile information
    if userId in users:
        users[userId].update(data)
        return jsonify({'message': 'Profile updated successfully'}), 200
    return jsonify({'error': 'User not found'}), 404

@app.route('/users/<userId>', methods=['GET'])
def get_user(userId):
    # Get user profile information
    if userId in users:
        return jsonify(users[userId]), 200
    return jsonify({'error': 'User not found'}), 404

# Wallet API
@app.route('/users/<userId>/wallet', methods=['GET'])
def get_wallet_balance(userId):
    # Get wallet balance for a user
    if userId in wallets:
        return jsonify({'balance': wallets[userId]}), 200
    return jsonify({'error': 'Wallet not found'}), 404

@app.route('/users/<userId>/wallet/deposit', methods=['POST'])
def deposit_to_wallet(userId):
    data = request.get_json()
    amount = data['amount']
    # Deposit funds to a user's wallet
    if userId in wallets:
        wallets[userId] += amount
    else:
        wallets[userId] = amount
    return jsonify({'message': 'Funds deposited successfully'}), 200

@app.route('/users/<userId>/wallet/withdraw', methods=['POST'])
def withdraw_from_wallet(userId):
    data = request.get_json()
    amount = data['amount']
    # Withdraw funds from a user's wallet
    if userId in wallets and wallets[userId] >= amount:
        wallets[userId] -= amount
        return jsonify({'message': 'Funds withdrawn successfully'}), 200
    return jsonify({'error': 'Insufficient balance or wallet not found'}), 400

# Transaction API
@app.route('/users/<userId>/wallet/transaction', methods=['POST'])
def create_transaction(userId):
    data = request.get_json()
    amount = data['amount']
    # Create a new transaction for a user's wallet
    if userId in wallets and wallets[userId] >= amount:
        transaction_id = generate_transaction_id()
        transactions[transaction_id] = {
            'user_id': userId,
            'amount': amount
        }
        # Update wallet balance
        wallets[userId] -= amount
        return jsonify({'message': 'Transaction created successfully'}), 200
    return jsonify({'error': 'Insufficient balance or wallet not found'}), 400

@app.route('/transactions/<transactionId>', methods=['GET'])
def get_transaction(transactionId):
    # Get details of a specific transaction
    if transactionId in transactions:
        return jsonify(transactions[transactionId]), 200
    return jsonify({'error': 'Transaction not found'}), 404

# Order API
@app.route('/users/<userId>/orders', methods=['POST'])
def place_order(userId):
    data = request.get_json()
    cryptocurrency = data['cryptocurrency']
    quantity = data['quantity']
    price = data['price']
    # Place a new order for a user
    order_id = generate_order_id()
    orders[order_id] = {
        'user_id': userId,
        'cryptocurrency': cryptocurrency,
        'quantity': quantity,
        'price': price
    }
    return jsonify({'message': 'Order placed successfully'}), 200

@app.route('/orders/<orderId>', methods=['DELETE'])
def cancel_order(orderId):
    # Cancel a specific order
    if orderId in orders:
        del orders[orderId]
        return jsonify({'message': 'Order cancelled successfully'}), 200
    return jsonify({'error': 'Order not found'}), 404

@app.route('/users/<userId>/orders', methods=['GET'])
def get_user_orders(userId):
    # Get all orders for a user
    user_orders = []
    for order_id, order in orders.items():
        if order['user_id'] == userId:
            user_orders.append(order)
    return jsonify(user_orders), 200

# Trade API
@app.route('/orders/<orderId>/trade', methods=['POST'])
def execute_trade(orderId):
    data = request.get_json()
    buyer_id = data['buyer_id']
    seller_id = data['seller_id']
    quantity = data['quantity']
    price = data['price']
    # Execute a trade for a specific order
    if orderId in orders:
        trade_id = generate_trade_id()
        trades[trade_id] = {
            'order_id': orderId,
            'buyer_id': buyer_id,
            'seller_id': seller_id,
            'quantity': quantity,
            'price': price
        }
        # Update wallet balances
        if buyer_id in wallets:
            wallets[buyer_id] -= quantity * price
        else:
            wallets[buyer_id] = -quantity * price
        if seller_id in wallets:
            wallets[seller_id] += quantity * price
        else:
            wallets[seller_id] = quantity * price
        return jsonify({'message': 'Trade executed successfully'}), 200
    return jsonify({'error': 'Order not found'}), 404

@app.route('/trades/<tradeId>', methods=['GET'])
def get_trade(tradeId):
    # Get details of a specific trade
    if tradeId in trades:
        return jsonify(trades[tradeId]), 200
    return jsonify({'error': 'Trade not found'}), 404

# Notification API
@app.route('/users/<userId>/notifications', methods=['POST'])
def send_notification(userId):
    data = request.get_json()
    message = data['message']
    # Send a new notification to a user
    if userId in users:
        notification_id = generate_notification_id()
        notifications[notification_id] = {
            'user_id': userId,
            'message': message
        }
        return jsonify({'message': 'Notification sent successfully'}), 200
    return jsonify({'error': 'User not found'}), 404

@app.route('/users/<userId>/notifications',Sure! Here's the completed code with the logic for each API endpoint:



@app.route('/users/<userId>/wallet/withdraw', methods=['POST'])
def withdraw_from_wallet(userId):
    data = request.get_json()
    amount = data['amount']
    # Withdraw funds from a user's wallet
    if userId in wallets and wallets[userId] >= amount:
        wallets[userId] -= amount
        return jsonify({'message': 'Funds withdrawn successfully'}), 200
    return jsonify({'error': 'Insufficient balance or wallet not found'}), 400

# Transaction API
@app.route('/users/<userId>/wallet/transaction', methods=['POST'])
def create_transaction(userId):
    data = request.get_json()
    amount = data['amount']
    # Create a new transaction for a user's wallet
    if userId in wallets and wallets[userId] >= amount:
        transaction_id = generate_transaction_id()
        transactions[transaction_id] = {
            'user_id': userId,
            'amount': amount
        }
        # Update wallet balance
        wallets[userId] -= amount
        return jsonify({'message': 'Transaction created successfully'}), 200
    return jsonify({'error': 'Insufficient balance or wallet not found'}), 400

@app.route('/transactions/<transactionId>', methods=['GET'])
def get_transaction(transactionId):
    # Get details of a specific transaction
    if transactionId in transactions:
        return jsonify(transactions[transactionId]), 200
    return jsonify({'error': 'Transaction not found'}), 404

# Order API
@app.route('/users/<userId>/orders', methods=['POST'])
def place_order(userId):
    data = request.get_json()
    cryptocurrency = data['cryptocurrency']
    quantity = data['quantity']
    price = data['price']
    # Place a new order for a user
    order_id = generate_order_id()
    orders[order_id] = {
        'user_id': userId,
        'cryptocurrency': cryptocurrency,
        'quantity': quantity,
        'price': price
    }
    return jsonify({'message': 'Order placed successfully'}), 200

@app.route('/orders/<orderId>', methods=['DELETE'])
def cancel_order(orderId):
    # Cancel a specific order
    if orderId in orders:
        del orders[orderId]
        return jsonify({'message': 'Order cancelled successfully'}), 200
    return jsonify({'error': 'Order not found'}), 404

@app.route('/users/<userId>/orders', methods=['GET'])
def get_user_orders(userId):
    # Get all orders for a user
    user_orders = []
    for order_id, order in orders.items():
        if order['user_id'] == userId:
            user_orders.append(order)
    return jsonify(user_orders), 200

# Trade API
@app.route('/orders/<orderId>/trade', methods=['POST'])
def execute_trade(orderId):
    data = request.get_json()
    buyer_id = data['buyer_id']
    seller_id = data['seller_id']
    quantity = data['quantity']
    price = data['price']
    # Execute a trade for a specific order
    if orderId in orders:
        trade_id = generate_trade_id()
        trades[trade_id] = {
            'order_id': orderId,
            'buyer_id': buyer_id,
            'seller_id': seller_id,
            'quantity': quantity,
            'price': price
        }
        # Update wallet balances
        if buyer_id in wallets:
            wallets[buyer_id] -= quantity * price
        else:
            wallets[buyer_id] = -quantity * price
        if seller_id in wallets:
            wallets[seller_id] += quantity * price
        else:
            wallets[seller_id] = quantity * price
        return jsonify({'message': 'Trade executed successfully'}), 200
    return jsonify({'error': 'Order not found'}), 404

@app.route('/trades/<tradeId>', methods=['GET'])
def get_trade(tradeId):
    # Get details of a specific trade
    if tradeId in trades:
        return jsonify(trades[tradeId]), 200
    return jsonify({'error': 'Trade not found'}), 404

# Notification API
@app.route('/users/<userId>/notifications', methods=['POST'])
def send_notification(userId):
    data = request.get_json()
    message = data['message']
    # Send a new notification to a user
    if userId in users:
        notification_id = generate_notification_id()
        notifications[notification_id] = {
            'user_id': userId,
            'message': message
        }
        return jsonify({'message': 'Notification sent successfully'}), 200
    return jsonify({'error': 'User not found'}), 404

@app.route('/users/<userId>/notifications', methods=['GET'])
def get_notifications(userId):
    # Get all notifications for a user
    user_notifications = []
   ```python
    for notification_id, notification in notifications.items():
        if notification['user_id'] == userId:
            user_notifications.append(notification)
    return jsonify(user_notifications), 200

@app.route('/notifications/<notificationId>', methods=['PATCH'])
def mark_notification_as_read(notificationId):
    # Mark a specific notification as read
    if notificationId in notifications:
        notifications[notificationId]['read'] = True
        return jsonify({'message': 'Notification marked as read'}), 200
    return jsonify({'error': 'Notification not found'}), 404

# Analytics API
@app.route('/analytics/users/<userId>', methods=['GET'])
def get_user_analytics(userId):
    # Get analytics data for a specific user
    if userId in users:
        # Fetch user analytics data
        return jsonify(user_analytics), 200
    return jsonify({'error': 'User not found'}), 404

@app.route('/analytics/market', methods=['GET'])
def get_market_analytics():
    # Get market analytics data
    # Fetch market analytics data
    return jsonify(market_analytics), 200

if __name__ == '__main__':
    app.run()

class Wallet:
    def __init__(self, user_id):
        self.user_id = user_id
        self.balances = {}

    def deposit(self, currency, amount):
        if currency in self.balances:
            self.balances[currency] += amount
        else:
            self.balances[currency] = amount

    def withdraw(self, currency, amount):
        if currency in self.balances and self.balances[currency] >= amount:
            self.balances[currency] -= amount
        else:
            raise ValueError("Insufficient balance")

    def get_balance(self, currency):
        return self.balances.get(currency, 0)

# Example usage:
wallet = Wallet(user_id=123)
wallet.deposit("BTC", 1.5)
wallet.withdraw("BTC", 0.5)
balance = wallet.get_balance("BTC")
print(balance)  # Output: 1.0

class Order:
    def __init__(self, user_id, currency_pair, side, quantity, price):
        self.user_id = user_id
        self.currency_pair = currency_pair
        self.side = side
        self.quantity = quantity
        self.price = price

    def execute(self):
        # Execute trade logic
        print(f"Executing trade for user {self.user_id} - {self.side} {self.quantity} {self.currency_pair} at {self.price}")

# Example usage:
order = Order(user_id=123, currency_pair="BTC/USD", side="buy", quantity=1.0, price=40000)
order.execute()

class FiatIntegration:
    def __init__(self, user_id):
        self.user_id = user_id

    def convert_to_fiat(self, currency, amount):
        # Convert cryptocurrency to fiat logic
        fiat_amount = amount * get_currency_exchange_rate(currency, "USD")
        return fiat_amount

    def convert_to_crypto(self, currency, amount):
        # Convert fiat to cryptocurrency logic
        crypto_amount = amount / get_currency_exchange_rate(currency, "USD")
        return crypto_amount

def get_currency_exchange_rate(base_currency, target_currency):
    # Simulated currency exchange rate retrieval
    exchange_rates = {
        "BTC": 40000,
        "ETH": 2500,
        "USD": 1,
        "EUR": 0.85
    }
    return exchange_rates.get(target_currency, 0) / exchange_rates.get(base_currency, 1)

# Example usage:
fiat_integration = FiatIntegration(user_id=123)
fiat_amount = fiat_integration.convert_to_fiat("BTC", 1.0)
crypto_amount = fiat_integration.convert_to_crypto("USD", 40000)
print(fiat_amount)  # Output: 40000.0
print(crypto_amount)  # Output: 1.0

class SecurityManager:
    def __init__(self, user_id):
        self.user_id = user_id

    def enable_two_factor_auth(self):
        # Enable two-factor authentication logic
        print(f"Two-factor authentication enabled for user {self.user_id}")

    def encrypt_data(self, data):
        # Encrypt data logic
        encrypted_data = data.upper()
        return encrypted_data

    def store_in_cold_storage(self, currency, amount):
        # Store funds in cold storage logic
        print(f"{amount} {currency} stored in cold storage for user {self.user_id}")

# Example usage:
security_manager = SecurityManager(user_id=123)
security_manager.enable_two_factor_auth()
encrypted_data = security_manager.encrypt_data("Sensitive data")
security_manager.store_in_cold_storage("BTC", 10.0)
print(encrypted_data)  # Output: "SENSITIVE DATA"

class MobileApplication:
    def __init__(self, user_id, platform):
        self.user_id = user_id
        self.platform = platform

    def login(self, username, password):
        # Login logic
        if self.platform == "iOS":
            print(f"User {username} logged in on iOS")
        elif self.platform == "Android":
            print(f"User {username} logged in on Android")

    def access_account(self):
        # Access account logic
        print(f"Accessing account for user {self.user_id}")

# Example usage:
mobile_app = MobileApplication(user_id=123, platform="iOS")
mobile_app.login("username", "password")
mobile_app.access_account()

from flask import Flask, jsonify, request

app = Flask(__name__)

food_orders = []

@app.route('/food-delivery/orders', methods=['POST'])
def place_order():
    data = request.get_json()
    user_id = data['user_id']
    restaurant_id = data['restaurant_id']
    items = data['items']

    # Logic to process the food order, calculate total price, etc.
    order = {
        'user_id': user_id,
        'restaurant_id': restaurant_id,
        'items': items,
        'status': 'placed'
    }
    food_orders.append(order)

    return jsonify({'message': 'Order placed successfully'}), 201

@app.route('/food-delivery/orders/<order_id>', methods=['GET'])
def get_order(order_id):
    for order in food_orders:
        if order['order_id'] == order_id:
            return jsonify(order)
    return jsonify({'error': 'Order not found'}), 404

if __name__ == '__main__':
    app.run()

from flask import Flask, jsonify, request

app = Flask(__name__)

rides = []

@app.route('/rides', methods=['POST'])
def request_ride():
    data = request.get_json()
    user_id = data['user_id']
    vehicle_type = data['vehicle_type']

    ride = {
        'ride_id': len(rides) + 1,
        'user_id': user_id,
        'vehicle_type': vehicle_type,
        'status': 'requested'
    }
    rides.append(ride)

    return jsonify({'message': 'Ride requested successfully'}), 201

@app.route('/rides/<ride_id>', methods=['GET'])
def get_ride(ride_id):
    for ride in rides:
        if ride['ride_id'] == int(ride_id):
            return jsonify(ride)
    return jsonify({'error': 'Ride not found'}), 404

if __name__ == '__main__':
    app.run()

from flask import Flask, jsonify, request

app = Flask(__name__)

likes = []

@app.route('/likes', methods=['POST'])
def like_post():
    data = request.get_json()
    user_id = data['user_id']
    post_id = data['post_id']

    like = {
        'like_id': len(likes) + 1,
        'user_id': user_id,
        'post_id': post_id,
        'timestamp': datetime.datetime.now().isoformat()
    }
    likes.append(like)

    return jsonify({'message': 'Post liked successfully'}), 201

@app.route('/likes/<post_id>', methods=['GET'])
def get_likes(post_id):
    post_likes = []
    for like in likes:
        if like['post_id'] == int(post_id):
            post_likes.append(like['user_id'])
    return jsonify({'likes': post_likes})

if __name__ == '__main__':
    app.run()

from flask import Flask, jsonify, request

app = Flask(__name__)

comments = []

@app.route('/comments', methods=['POST'])
def add_comment():
    data = request.get_json()
    user_id = data['user_id']
    post_id = data['post_id']
    caption_text = data['caption_text']

    comment = {
        'comment_id': len(comments) + 1,
        'post_id': post_id,
        'user_id': user_id,
        'caption_text': caption_text,
        'timestamp': datetime.datetime.now().isoformat()
    }
    comments.append(comment)

    return jsonify({'message': 'Comment added successfully'}), 201

@app.route('/comments/<post_id>', methods=['GET'])
def get_comments(post_id):
    post_comments = []
    for comment in comments:
        if comment['post_id'] == int(post_id):
            post_comments.append(comment)
    return jsonify({'comments': post_comments})

if __name__ == '__main__':
    app.run()

import java.util.*;

class User {
    private String userId;
    private String username;
    private String password;
    // other user attributes
    
    public User(String userId, String username, String password) {
        this.userId = userId;
        this.username = username;
        this.password = password;
        // initialize other attributes
    }
    
    // Getters and setters for attributes
    // ...
}

class Ride {
    private String rideId;
    private User user;
    private String vehicleType;
    private String status;
    // other ride attributes
    
    public Ride(String rideId, User user, String vehicleType) {
        this.rideId = rideId;
        this.user = user;
        this.vehicleType = vehicleType;
        // initialize other attributes
    }
    
    // Getters and setters for attributes
    // ...
}

class Grab {
    private Map<String, User> users;
    private List<Ride> rides;
    
    public Grab() {
        this.users = new HashMap<>();
        this.rides = new ArrayList<>();
    }
    
    public void addUser(User user) {
        users.put(user.getUserId(), user);
    }
    
    public User getUserById(String userId) {
        return users.get(userId);
    }
    
    public void requestRide(String userId, String vehicleType) {
        User user = getUserById(userId);
        
        if (user == null) {
            System.out.println("User not found");
            return;
        }
        
        String rideId = generateRideId(); // Generate a unique ride ID
        Ride ride = new Ride(rideId, user, vehicleType);
        rides.add(ride);
        
        // Additional logic to assign drivers, update ride status, etc.
        // ...
    }
    
    // Additional methods for updating ride status, retrieving ride history, etc.
    // ...
}

public class Main {
    public static void main(String[] args) {
        Grab grab = new Grab();
        
        User user1 = new User("1", "Alice", "password");
        User user2 = new User("2", "Bob", "password");
        
        grab.addUser(user1);
        grab.addUser(user2);
        
        grab.requestRide("1", "Car");
        
        // Additional code for testing and verification
        // ...
    }
}

from flask import Flask, jsonify, request

app = Flask(__name__)

users = {}
rides = []

@app.route('/users', methods=['POST'])
def create_user():
    data = request.get_json()
    user_id = data['user_id']
    username = data['username']
    password = data['password']

    user = {
        'user_id': user_id,
        'username': username,
        'password': password
    }
    users[user_id] = user

    return jsonify({'message': 'User created successfully'}), 201

@app.route('/users/<user_id>', methods=['GET'])
def get_user(user_id):
    if user_id in users:
        return jsonify(users[user_id])
    else:
        return jsonify({'error': 'User not found'}), 404

@app.route('/rides', methods=['POST'])
def request_ride():
    data = request.get_json()
    user_id = data['user_id']
    vehicle_type = data['vehicle_type']

    user = users.get(user_id)
    if not user:
        return jsonify({'error': 'User not found'}), 404

    ride_id = len(rides) + 1
    ride = {
        'ride_id': ride_id,
        'user_id': user_id,
        'vehicle_type': vehicle_type,
        'status': 'requested'
    }
    rides.append(ride)

    return jsonify({'message': 'Ride requested successfully'}), 201

@app.route('/rides/<ride_id>', methods=['GET'])
def get_ride(ride_id):
    for ride in rides:
        if ride['ride_id'] == int(ride_id):
            return jsonify(ride)
    return jsonify({'error': 'Ride not found'}), 404

if __name__ == '__main__':
    app.run()

from flask import Flask, jsonify, request

app = Flask(__name__)

# In-memory data structure to store rides
rides = {}

@app.route('/rides', methods=['POST'])
def request_ride():
    data = request.get_json()
    user_id = data['user_id']
    pickup_location = data['pickup_location']
    destination = data['destination']

    # Logic to process the ride request, assign a driver, etc.
    ride_id = generate_ride_id()

    # Store the ride details
    rides[ride_id] = {
        'user_id': user_id,
        'pickup_location': pickup_location,
        'destination': destination,
        'status': 'requested'
    }

    response = {
        'ride_id': ride_id,
        'message': 'Ride requested successfully'
    }

    return jsonify(response), 201

@app.route('/rides/<ride_id>', methods=['GET'])
def get_ride(ride_id):
    if ride_id in rides:
        return jsonify(rides[ride_id])
    else:
        return jsonify({'error': 'Ride not found'}), 404

@app.route('/rides/<ride_id>', methods=['PUT'])
def update_ride_status(ride_id):
    if ride_id in rides:
        data = request.get_json()
        status = data['status']

        if status in ['accept', 'cancel', 'start', 'complete']:
            rides[ride_id]['status'] = status
            return jsonify({'message': 'Ride status updated'})
        else:
            return jsonify({'error': 'Invalid ride status'}), 400
    else:
        return jsonify({'error': 'Ride not found'}), 404

def generate_ride_id():
    # Logic to generate a unique ride ID
    pass

if __name__ == '__main__':
    app.run()

from flask import Flask, jsonify, request

app = Flask(__name__)

# In-memory data structure to store food orders
orders = {}

@app.route('/food-delivery/orders', methods=['POST'])
def place_order():
    data = request.get_json()
    user_id = data['user_id']
    restaurant_id = data['restaurant_id']
    items = data['items']

    # Logic to process the food order, calculate total price, etc.
    order_id = generate_order_id()

    # Store the order details
    orders[order_id] = {
        'user_id': user_id,
        'restaurant_id': restaurant_id,
        'items': items,
        'status': 'placed'
    }

    response = {
        'order_id': order_id,
        'message': 'Order placed successfully'
    }

    return jsonify(response), 201

@app.route('/food-delivery/orders/<order_id>', methods=['GET'])
def get_order(order_id):
    if order_id in orders:
        return jsonify(orders[order_id])
    else:
        return jsonify({'error': 'Order not found'}), 404

@app.route('/food-delivery/orders/<order_id>', methods=['PUT'])
def update_order_status(order_id):
    if order_id in orders:
        data = request.get_json()
        status = data['status']

        if status in ['confirm', 'cancel', 'deliver']:
            orders[order_id]['status'] = status
            return jsonify({'message': 'Order status updated'})
        else:
            return jsonify({'error': 'Invalid order status'}), 400
    else:
        return jsonify({'error': 'Order not found'}), 404

def generate_order_id():
    # Logic to generate a unique order ID
    pass

if __name__ == '__main__':
    app.run()

from flask import Flask, jsonify, request

app = Flask(__name__)

rides = []

@app.route('/rides', methods=['POST'])
def request_ride():
    data = request.get_json()
    user_id = data['user_id']
    vehicle_type = data['vehicle_type']
    
    # Logic to process the ride request, assign a driver, etc.
    ride = {
        'user_id': user_id,
        'vehicle_type': vehicle_type,
        'status': 'requested'
    }
    rides.append(ride)
    
    return jsonify({'message': 'Ride requested successfully'}), 201

@app.route('/rides/<ride_id>', methods=['GET'])
def get_ride(ride_id):
    for ride in rides:
        if ride['ride_id'] == ride_id:
            return jsonify(ride)
    return jsonify({'error': 'Ride not found'}), 404

if __name__ == '__main__':
    app.run()

from flask import Flask, jsonify, request

app = Flask(__name__)

orders = []

@app.route('/food-delivery/orders', methods=['POST'])
def place_order():
    data = request.get_json()
    user_id = data['user_id']
    restaurant_id = data['restaurant_id']
    items = data['items']
    
    # Logic to process the food order, calculate total price, etc.
    order = {
        'user_id': user_id,
        'restaurant_id': restaurant_id,
        'items': items,
        'status': 'placed'
    }
    orders.append(order)
    
    return jsonify({'message': 'Order placed successfully'}), 201

@app.route('/food-delivery/orders/<order_id>', methods=['GET'])
def get_order(order_id):
    for order in orders:
        if order['order_id'] == order_id:
            return jsonify(order)
    return jsonify({'error': 'Order not found'}), 404

if __name__ == '__main__':
    app.run()

from flask import Flask, jsonify, request

app = Flask(__name__)

payments = []

@app.route('/payments', methods=['POST'])
def make_payment():
    data = request.get_json()
    user_id = data['user_id']
    amount = data['amount']
    
    # Logic to process the payment, deduct the amount from the user's wallet, etc.
    payment = {
        'user_id': user_id,
        'amount': amount,
        'status': 'completed'
    }
    payments.append(payment)
    
    return jsonify({'message': 'Payment successful'}), 201

@app.route('/payments/<payment_id>', methods=['GET'])
def get_payment(payment_id):
    for payment in payments:
        if payment['payment_id'] == payment_id:
            return jsonify(payment)
    return jsonify({'error': 'Payment not found'}), 404

if __name__ == '__main__':
    app.run()

from flask import Flask, jsonify, request

app = Flask(__name__)

deliveries = []

@app.route('/deliveries', methods=['POST'])
def request_delivery():
    data = request.get_json()
    sender_id = data['sender_id']
    recipient_id = data['recipient_id']
    item = data['item']
    
    # Logic to process the delivery request, assign a delivery partner, etc.
    delivery = {
        'sender_id': sender_id,
        'recipient_id': recipient_id,
        'item': item,
        'status': 'requested'
    }
    deliveries.append(delivery)
    
    return jsonify({'message': 'Delivery requested successfully'}), 201

@app.route('/deliveries/<delivery_id>', methods=['GET'])
def get_delivery(delivery_id):
    for delivery in deliveries:
        if delivery['delivery_id'] == delivery_id:
            return jsonify(delivery)
    return jsonify({'error': 'Delivery not found'}), 404

if __name__ == '__main__':
    app.run()

from flask import Flask, jsonify, request

app = Flask(__name__)

services = []

@app.route('/services', methods=['POST'])
def request_service():
    data = request.get_json()
    user_id = data['user_id']
    service_type = data['service_type']
    
    # Logic to process the service request, route to the appropriate service handler, etc.
    service = {
        'user_id': user_id,
        'service_type': service_type,
        'status': 'requested'
    }
    services.append(service)
    
    return jsonify({'message': 'Service requested successfully'}), 201

@app.route('/services/<service_id>', methods=['GET'])
def get_service(service_id):
    for service in services:
        if service['service_id'] == service_id:
            return jsonify(service)
    return jsonify({'error': 'Service not found'}), 404

if __name__ == '__main__':
    app.run()

class GoogleEarth:
    def __init__(self):
        self.locations = {}

    def view_location(self, location_id):
        if location_id in self.locations:
            return self.locations[location_id]
        else:
            return None

    def add_location(self, location_data):
        location_id = len(self.locations) + 1
        self.locations[location_id] = location_data
        return location_id

    def update_location(self, location_id, updated_data):
        if location_id in self.locations:
            self.locations[location_id] = updated_data
            return True
        else:
            return False


earth = GoogleEarth()

# Simulating user activities
for user_id in range(1, 300_000_001):
    for _ in range(3):
        location_id = earth.add_location(f"Location {user_id}_{_ + 1}")
        print(f"User {user_id} viewed Location {location_id}")

# Simulating location additions
for _ in range(15_000_000):
    location_id = earth.add_location(f"New Location {_ + 1}")

# Simulating location updates
for location_id in range(1, 10_000_001, 1_000_000):
    earth.update_location(location_id, f"Updated Location {location_id}")

# Simulating location retrieval
for location_id in range(1, 10_000_001, 1_000_000):
    location_data = earth.view_location(location_id)
    print(f"Location {location_id}: {location_data}")

class LocationService:
    def __init__(self):
        self.locations = {}

    def create_location(self, location_id, latitude, longitude, name, description, photo_url):
        self.locations[location_id] = {
            'latitude': latitude,
            'longitude': longitude,
            'name': name,
            'description': description,
            'photo_url': photo_url
        }

    def update_location(self, location_id, updated_data):
        if location_id in self.locations:
            self.locations[location_id].update(updated_data)
            return True
        else:
            return False

    def get_location(self, location_id):
        return self.locations.get(location_id)

    def delete_location(self, location_id):
        if location_id in self.locations:
            del self.locations[location_id]
            return True
        else:
            return False


class UserService:
    def __init__(self):
        self.users = {}

    def register_user(self, user_id, username, email, password):
        self.users[user_id] = {
            'username': username,
            'email': email,
            'password': password
        }

    def authenticate_user(self, username, password):
        for user_id, user in self.users.items():
            if user['username'] == username and user['password'] == password:
                return user_id
        return None

    def update_profile(self, user_id, updated_data):
        if user_id in self.users:
            self.users[user_id].update(updated_data)
            return True
        else:
            return False


class FollowService:
    def __init__(self):
        self.followers = {}

    def follow_user(self, follower_id, following_id):
        if follower_id not in self.followers:
            self.followers[follower_id] = set()
        self.followers[follower_id].add(following_id)

    def unfollow_user(self, follower_id, following_id):
        if follower_id in self.followers and following_id in self.followers[follower_id]:
            self.followers[follower_id].remove(following_id)
            return True
        return False


class LikeService:
    def __init__(self):
        self.likes = {}

    def like_location(self, user_id, location_id):
        if location_id not in self.likes:
            self.likes[location_id] = set()
        self.likes[location_id].add(user_id)

    def unlike_location(self, user_id, location_id):
        if location_id in self.likes and user_id in self.likes[location_id]:
            self.likes[location_id].remove(user_id)
            return True
        return False


class CommentService:
    def __init__(self):
        self.comments = {}

    def add_comment(self, comment_id, location_id, user_id, caption):
        self.comments[comment_id] = {
            'location_id': location_id,
            'user_id': user_id,
            'caption': caption
        }

    def reply_to_comment(self, parent_comment_id, comment_id, location_id, user_id, caption):
        self.comments[comment_id] = {
            'location_id': location_id,
            'user_id': user_id,
            'caption': caption,
            'parent_comment_id': parent_comment_id
        }

    def delete_comment(self, comment_id):
        if comment_id in self.comments:
            del self.comments[comment_id]
            return True
        return False


class FeedGenerationService:
    def __init__(self, location_service, follow_service, like_service):
        self.location_service = location_service
        self.follow_service = follow_service
        self.like_service = like_service

    def generate_feed(self, user_id):
        followed_users = self.follow_service.get_followed_users(user_id)
        feed = []

        for followed_user in followed_users:
            user_locations = self.location_service.get_user_locations(followed_user)
            feed.extend(user_locations)

        feed = self.rank_feed(feed)
        return feed

    def rank_feed(self, feed):
        # Rank the feed based on popularity, likes, comments, etc.
        ranked_feed = sorted(feed, key=lambda location: location.get('likes', 0), reverse=True)
        return ranked_feed


# Usage example
location_service = LocationService()
user_service = UserService()
follow_service = FollowService()
like_service = LikeService()
comment_service = CommentService()

# Register users
user_service.register_user(1, 'user1', '[email protected]', 'password1')
user_service.register_user(2, 'user2', '[email protected]', 'password2')
user_service.register_user(3, 'user3', '[email protected]', 'password3')

# Create locations
location_service.create_location('location1', 37.7749, -122.4194, 'San Francisco', 'City by the Bay', 'https://example.com/sf.jpg')
location_service.create_location('location2', 51.5074, -0.1278, 'London', 'Capital of England', 'https://example.com/london.jpg')

# User1 follows User2
follow_service.follow_user(1, 2)

# User1 likes location1
like_service.like_location(1, 'location1')

# User2 adds a comment to location2
comment_service.add_comment(1, 'location2', 2, 'Beautiful city!')

# Generate feed for User1
feed_generation_service = FeedGenerationService(location_service, follow_service, like_service)
feed = feed_generation_service.generate_feed(1)

# Print the feed
for location in feed:
    print(f"Location: {location['name']}, Likes: {location.get('likes', 0)}, Comments: {location.get('comments', 0)}")

from flask import Flask, request

app = Flask(__name__)

# Data storage for map layers
map_layers = {}

# API endpoint for adding a new map layer
@app.route('/api/map_layers', methods=['POST'])
def add_map_layer():
    data = request.json
    layer_id = data.get('layer_id')
    layer_data = data.get('layer_data')

    if layer_id and layer_data:
        map_layers[layer_id] = layer_data
        return f"Map layer with ID {layer_id} added successfully", 201
    else:
        return "Invalid layer data", 400

# API endpoint for retrieving a map layer
@app.route('/api/map_layers/<layer_id>', methods=['GET'])
def get_map_layer(layer_id):
    if layer_id in map_layers:
        return map_layers[layer_id]
    else:
        return "Map layer not found", 404

# API endpoint for deleting a map layer
@app.route('/api/map_layers/<layer_id>', methods=['DELETE'])
def delete_map_layer(layer_id):
    if layer_id in map_layers:
        del map_layers[layer_id]
        return f"Map layer with ID {layer_id} deleted successfully", 200
    else:
        return "Map layer not found", 404

# API endpoint for manipulating the map view
@app.route('/api/map_view', methods=['POST'])
def manipulate_map_view():
    data = request.json
    action = data.get('action')

    if action == 'zoom_in':
        # Logic to zoom in the map view
        return "Map view zoomed in successfully", 200
    elif action == 'zoom_out':
        # Logic to zoom out the map view
        return "Map view zoomed out successfully", 200
    elif action == 'rotate':
        angle = data.get('angle')
        if angle is not None:
            # Logic to rotate the map view by the specified angle
            return f"Map view rotated by {angle} degrees successfully", 200
        else:
            return "Invalid rotation angle", 400
    else:
        return "Invalid action", 400

# API endpoint for searching a location
@app.route('/api/search', methods=['GET'])
def search_location():
    query = request.args.get('query')

    if query:
        # Logic to search for the location based on the query
        location_data = {
            'latitude': 37.7749,
            'longitude': -122.4194,
            'name': 'San Francisco',
            'description': 'A vibrant city in California, USA',
        }
        return location_data
    else:
        return "Invalid search query", 400

if __name__ == '__main__':
    app.run()

class GoogleEarth:
    def __init__(self):
        self.globe = Globe()
        self.satellite_imagery = SatelliteImagery()
        self.street_view = StreetView()
        self.layers = Layers()
        self.historical_imagery = HistoricalImagery()
        self.buildings = Buildings()
        self.flight_simulator = FlightSimulator()
        self.tour_creation = TourCreation()

    def explore_globe(self):
        self.globe.explore()

    def view_satellite_imagery(self, location):
        self.satellite_imagery.view(location)

    def view_street_view(self, location):
        self.street_view.view(location)

    def add_overlay(self, overlay_data):
        self.layers.add_overlay(overlay_data)

    def view_historical_imagery(self, location, date):
        self.historical_imagery.view(location, date)

    def render_buildings(self, city):
        self.buildings.render(city)

    def start_flight_simulator(self):
        self.flight_simulator.start()

    def create_tour(self, tour_data):
        self.tour_creation.create_tour(tour_data)


class Globe:
    def explore(self):
        print("Exploring the 3D globe...")


class SatelliteImagery:
    def view(self, location):
        print(f"Viewing satellite imagery of {location}")


class StreetView:
    def view(self, location):
        print(f"Viewing street-level panoramic views of {location}")


class Layers:
    def add_overlay(self, overlay_data):
        print(f"Adding overlay with data: {overlay_data}")


class HistoricalImagery:
    def view(self, location, date):
        print(f"Viewing historical satellite imagery of {location} from {date}")


class Buildings:
    def render(self, city):
        print(f"Rendering 3D models of buildings and landmarks in {city}")


class FlightSimulator:
    def start(self):
        print("Starting the flight simulator mode")


class TourCreation:
    def create_tour(self, tour_data):
        print(f"Creating a tour with data: {tour_data}")


earth = GoogleEarth()

earth.explore_globe()
earth.view_satellite_imagery("New York")
earth.view_street_view("Paris")
earth.add_overlay("Roads and Borders")
earth.view_historical_imagery("London", "2020-01-01")
earth.render_buildings("San Francisco")
earth.start_flight_simulator()
earth.create_tour("Tour Data")

from flask import Flask, request, jsonify

app = Flask(__name__)
google_earth = GoogleEarth()

@app.route('/users', methods=['POST'])
def create_user():
    data = request.get_json()
    user = User(data['userId'], data['username'], data['password'], data['email'], data['bio'])
    google_earth.addUser(user)
    return jsonify({'message': 'User created successfully'}), 201

@app.route('/users/<userId>', methods=['GET'])
def get_user(userId):
    user = google_earth.getUserById(userId)
    if user:
        return jsonify(user.__dict__)
    else:
        return jsonify({'message': 'User not found'}), 404

@app.route('/locations', methods=['POST'])
def create_location():
    data = request.get_json()
    location = Location(data['locationId'], data['latitude'], data['longitude'], data['name'], data['description'], data['imageUrl'])
    google_earth.createLocation(location)
    return jsonify({'message': 'Location created successfully'}), 201

@app.route('/locations', methods=['GET'])
def get_locations():
    locations = google_earth.getLocations()
    return jsonify([location.__dict__ for location in locations])

@app.route('/locations/<locationId>', methods=['GET'])
def get_location(locationId):
    location = google_earth.getLocationById(locationId)
    if location:
        return jsonify(location.__dict__)
    else:
        return jsonify({'message': 'Location not found'}), 404

@app.route('/locations/<locationId>', methods=['PUT'])
def update_location(locationId):
    data = request.get_json()
    location = google_earth.getLocationById(locationId)
    if location:
        location.name = data['name']
        location.description = data['description']
        location.imageUrl = data['imageUrl']
        return jsonify({'message': 'Location updated successfully'})
    else:
        return jsonify({'message': 'Location not found'}), 404

@app.route('/users/<userId>/feed', methods=['GET'])
def get_feed(userId):
    user_feed = google_earth.getFeed(userId)
    return jsonify([location.__dict__ for location in user_feed])

if __name__ == '__main__':
    app.run()

import uuid
from datetime import datetime

class User:
    def __init__(self, username, email, password):
        self.userId = str(uuid.uuid4())
        self.username = username
        self.email = email
        self.password = password
        self.conversations = []

class Conversation:
    def __init__(self, participants):
        self.conversationId = str(uuid.uuid4())
        self.participants = participants
        self.messages = []

class Message:
    def __init__(self, senderId, content):
        self.messageId = str(uuid.uuid4())
        self.senderId = senderId
        self.content = content
        self.timestamp = datetime.now()

users = {}

def signup(username, email, password):
    if email in [user.email for user in users.values()]:
        return "Email already exists"
    user = User(username, email, password)
    users[user.userId] = user
    return user

def login(email, password):
    for user in users.values():
        if user.email == email and user.password == password:
            return user
    return None

def start_conversation(userIds):
    participants = [users[userId] for userId in userIds if userId in users]
    if len(participants) != len(userIds):
        return "Invalid user(s) in participants"
    conversation = Conversation(participants)
    for user in participants:
        user.conversations.append(conversation)
    return conversation

def send_message(conversationId, senderId, content):
    if conversationId not in [conversation.conversationId for conversation in users[senderId].conversations]:
        return "Invalid conversationId or user not part of the conversation"
    message = Message(senderId, content)
    conversation = [conversation for conversation in users[senderId].conversations if conversation.conversationId == conversationId][0]
    conversation.messages.append(message)
    return message

def get_user_conversations(userId):
    if userId not in users:
        return "Invalid userId"
    return users[userId].conversations

def get_conversation_messages(conversationId):
    for user in users.values():
        for conversation in user.conversations:
            if conversation.conversationId == conversationId:
                return conversation.messages
    return "Conversation not found"

# Example Usage
user1 = signup("user1", "[email protected]", "password1")
user2 = signup("user2", "[email protected]", "password2")

conversation = start_conversation([user1.userId, user2.userId])

send_message(conversation.conversationId, user1.userId, "Hello there!")
send_message(conversation.conversationId, user2.userId, "Hi, how are you?")

user1_conversations = get_user_conversations(user1.userId)
for conv in user1_conversations:
    conversation_messages = get_conversation_messages(conv.conversationId)
    for msg in conversation_messages:
        print(f"User: {msg.senderId}, Content: {msg.content}, Timestamp: {msg.timestamp}")

from flask import Flask, request, jsonify
import requests

app = Flask(__name__)

# A dictionary to store ongoing conversations with their context
conversations = {}


@app.route('/start_conversation', methods=['POST'])
def start_conversation():
    data = request.json
    user_id = data.get('user_id')
    message = data.get('message')

    # Generate the API request to ChatGPT
    api_url = 'https://api.openai.com/v1/engines/davinci-codex/completions'
    headers = {
        'Authorization': 'Bearer YOUR_OPENAI_API_KEY',
    }
    payload = {
        'prompt': message,
        'max_tokens': 150,
    }
    response = requests.post(api_url, headers=headers, json=payload)
    response_data = response.json()
    completion_text = response_data['choices'][0]['text']

    # Create a new conversation ID for this user
    conversation_id = user_id + '_' + str(len(conversations.get(user_id, [])) + 1)

    # Save the conversation context
    conversations.setdefault(user_id, []).append({
        'conversation_id': conversation_id,
        'context': completion_text,
    })

    return jsonify({
        'conversation_id': conversation_id,
        'response': completion_text,
    })


@app.route('/continue_conversation', methods=['POST'])
def continue_conversation():
    data = request.json
    conversation_id = data.get('conversation_id')
    message = data.get('message')

    # Retrieve the conversation context based on conversation_id
    user_id = conversation_id.split('_')[0]
    conversation_data = next((conv for conv in conversations.get(user_id, []) if conv['conversation_id'] == conversation_id), None)

    if not conversation_data:
        return jsonify({
            'error': 'Invalid conversation_id',
        }), 404

    # Append the new message to the existing context
    conversation_context = conversation_data['context'] + ' ' + message

    # Generate the API request to ChatGPT
    api_url = 'https://api.openai.com/v1/engines/davinci-codex/completions'
    headers = {
        'Authorization': 'Bearer YOUR_OPENAI_API_KEY',
    }
    payload = {
        'prompt': conversation_context,
        'max_tokens': 150,
    }
    response = requests.post(api_url, headers=headers, json=payload)
    response_data = response.json()
    completion_text = response_data['choices'][0]['text']

    # Update the conversation context
    conversation_data['context'] = conversation_context + ' ' + completion_text

    return jsonify({
        'response': completion_text,
    })


if __name__ == '__main__':
    app.run(debug=True)

from flask import Flask, request, jsonify
import uuid
from datetime import datetime

app = Flask(__name__)

users = {}

class User:
    def __init__(self, username, email, password):
        self.userId = str(uuid.uuid4())
        self.username = username
        self.email = email
        self.password = password
        self.conversations = []

class Conversation:
    def __init__(self, participants):
        self.conversationId = str(uuid.uuid4())
        self.participants = participants
        self.messages = []

class Message:
    def __init__(self, senderId, content):
        self.messageId = str(uuid.uuid4())
        self.senderId = senderId
        self.content = content
        self.timestamp = datetime.now()

@app.route('/signup', methods=['POST'])
def signup():
    data = request.get_json()
    username = data.get('username')
    email = data.get('email')
    password = data.get('password')
    if email in [user.email for user in users.values()]:
        return jsonify({"message": "Email already exists"}), 400
    user = User(username, email, password)
    users[user.userId] = user
    return jsonify({"message": "User created successfully", "userId": user.userId}), 201

@app.route('/login', methods=['POST'])
def login():
    data = request.get_json()
    email = data.get('email')
    password = data.get('password')
    for user in users.values():
        if user.email == email and user.password == password:
            return jsonify({"message": "Login successful", "userId": user.userId}), 200
    return jsonify({"message": "Invalid credentials"}), 401

@app.route('/conversations/start', methods=['POST'])
def start_conversation():
    data = request.get_json()
    userIds = data.get('participants')
    participants = [users.get(userId) for userId in userIds if userId in users]
    if len(participants) != len(userIds):
        return jsonify({"message": "Invalid user(s) in participants"}), 400
    conversation = Conversation(participants)
    for user in participants:
        user.conversations.append(conversation)
    return jsonify({"conversationId": conversation.conversationId}), 201

@app.route('/conversations/<string:conversationId>/send', methods=['POST'])
def send_message(conversationId):
    data = request.get_json()
    senderId = data.get('senderId')
    content = data.get('content')
    if conversationId not in [conversation.conversationId for conversation in users[senderId].conversations]:
        return jsonify({"message": "Invalid conversationId or user not part of the conversation"}), 400
    message = Message(senderId, content)
    conversation = [conversation for conversation in users[senderId].conversations if conversation.conversationId == conversationId][0]
    conversation.messages.append(message)
    return jsonify({"messageId": message.messageId}), 200

@app.route('/users/<string:userId>/conversations', methods=['GET'])
def get_user_conversations(userId):
    if userId not in users:
        return jsonify({"message": "Invalid userId"}), 404
    user = users[userId]
    conversations = [{"conversationId": conv.conversationId, "participants": [part.userId for part in conv.participants]} for conv in user.conversations]
    return jsonify({"conversations": conversations}), 200

@app.route('/conversations/<string:conversationId>/messages', methods=['GET'])
def get_conversation_messages(conversationId):
    for user in users.values():
        for conversation in user.conversations:
            if conversation.conversationId == conversationId:
                messages = [{"messageId": msg.messageId, "senderId": msg.senderId, "content": msg.content, "timestamp": msg.timestamp} for msg in conversation.messages]
                return jsonify({"messages": messages}), 200
    return jsonify({"message": "Conversation not found"}), 404

if __name__ == '__main__':
    app.run(debug=True)

User Signup:

Endpoint: /users/signup
Method: POST
Request Payload: { "username": "john_doe", "email": "[email protected]", "password": "password123" }
Response: { "userId": "abc123", "username": "john_doe", "email": "[email protected]" }
Description: Allows users to sign up for the ChatGPT system by providing their username, email, and password. Returns the newly created user's information along with a unique userId.

User Login:

Endpoint: /users/login
Method: POST
Request Payload: { "email": "[email protected]", "password": "password123" }
Response: { "userId": "abc123", "username": "john_doe", "email": "[email protected]" }
Description: Allows users to log in to the ChatGPT system using their email and password. Returns the user's information along with a unique userId upon successful login.

Start Conversation:

Endpoint: /conversations/start
Method: POST
Request Payload: { "participants": ["userId1", "userId2"] }
Response: { "conversationId": "xyz789", "participants": ["userId1", "userId2"], "messages": [] }
Description: Starts a new conversation between two or more participants (userIds). Returns the conversationId and the list of participants.

Send Message:

Endpoint: /conversations/{conversationId}/send
Method: POST
Request Payload: { "senderId": "userId1", "content": "Hello there!" }
Response: { "messageId": "123456", "conversationId": "xyz789", "senderId": "userId1", "content": "Hello there!", "timestamp": "2023-07-21 15:30:00" }
Description: Sends a message in an existing conversation identified by conversationId. Returns the messageId, conversationId, senderId, content, and timestamp of the sent message.

Get Conversation Messages:

Endpoint: /conversations/{conversationId}/messages
Method: GET
Response: { "messages": [ { "messageId": "123456", "conversationId": "xyz789", "senderId": "userId1", "content": "Hello there!", "timestamp": "2023-07-21 15:30:00" }, { "messageId": "789012", "conversationId": "xyz789", "senderId": "userId2", "content": "Hi, how are you?", "timestamp": "2023-07-21 15:35:00" } ] }
Description: Retrieves all the messages exchanged in a specific conversation identified by conversationId. Returns the list of messages.

Get User Conversations:

Endpoint: /users/{userId}/conversations
Method: GET
Response: { "conversations": [ { "conversationId": "xyz789", "participants": ["userId1", "userId2"], "messages": [ { "messageId": "123456", "conversationId": "xyz789", "senderId": "userId1", "content": "Hello there!", "timestamp": "2023-07-21 15:30:00" }, { "messageId": "789012", "conversationId": "xyz789", "senderId": "userId2", "content": "Hi, how are you?", "timestamp": "2023-07-21 15:35:00" } ] }, { "conversationId": "abc123", "participants": ["userId1", "userId3"], "messages": [ { "messageId": "345678", "conversationId": "abc123", "senderId": "userId1", "content": "Hey!", "timestamp": "2023-07-21 15:40:00" }, { "messageId": "901234", "conversationId": "abc123", "senderId": "userId3", "content": "Hi!", "timestamp": "2023-07-21 15:45:00" } ] } ] }
Description: Retrieves all the conversations of a specific user identified by userId. Returns the list of conversations, each containing the conversationId, participants, and the list of messages.

Endpoint 1: /start_conversation
Method: POST
Input: user_id (string), message (string)
Output: conversation_id (string), response (string)
This endpoint will be used to start a new conversation with the ChatGPT system. The user_id will uniquely identify the user, and the message will be the initial input message from the user. The system will respond with a conversation_id to maintain context for the ongoing conversation and the initial response generated by ChatGPT.

Endpoint 2: /continue_conversation
Method: POST
Input: conversation_id (string), message (string)
Output: response (string)
This endpoint will be used to continue an ongoing conversation with the ChatGPT system. The conversation_id will be used to retrieve the conversation context, and the message will be the user's latest input. The system will respond with the updated response generated by ChatGPT.

from datetime import datetime

# Data Model
class User:
    def __init__(self, user_id, username, email, password):
        self.user_id = user_id
        self.username = username
        self.email = email
        self.password = password

class Conversation:
    def __init__(self, conversation_id, user_id, timestamp):
        self.conversation_id = conversation_id
        self.user_id = user_id
        self.timestamp = timestamp

class Message:
    def __init__(self, message_id, conversation_id, sender_id, content, timestamp):
        self.message_id = message_id
        self.conversation_id = conversation_id
        self.sender_id = sender_id
        self.content = content
        self.timestamp = timestamp

# Sample data
users = [
    User(1, "user1", "[email protected]", "password1"),
    User(2, "user2", "[email protected]", "password2"),
    User(3, "user3", "[email protected]", "password3"),
]

conversations = [
    Conversation(101, 1, datetime.now()),
    Conversation(102, 1, datetime.now()),
    Conversation(103, 2, datetime.now()),
]

messages = [
    Message(201, 101, 1, "Hi!", datetime.now()),
    Message(202, 101, 2, "Hello!", datetime.now()),
    Message(203, 101, 1, "How are you?", datetime.now()),
    Message(204, 102, 1, "Hey there!", datetime.now()),
    Message(205, 103, 2, "Good to see you!", datetime.now()),
]

# Service Functions
def user_signup(username, email, password):
    user_id = len(users) + 1
    user = User(user_id, username, email, password)
    users.append(user)
    return user_id

def user_login(email, password):
    for user in users:
        if user.email == email and user.password == password:
            return user
    return None

def start_conversation(user_id):
    conversation_id = len(conversations) + 101
    timestamp = datetime.now()
    conversation = Conversation(conversation_id, user_id, timestamp)
    conversations.append(conversation)
    return conversation

def send_message(conversation_id, sender_id, content):
    message_id = len(messages) + 201
    timestamp = datetime.now()
    message = Message(message_id, conversation_id, sender_id, content, timestamp)
    messages.append(message)
    return message

def get_user_conversations(user_id):
    return [conv for conv in conversations if conv.user_id == user_id]

def get_conversation_messages(conversation_id):
    return [msg for msg in messages if msg.conversation_id == conversation_id]

# Example Usage
if __name__ == "__main__":
    # User signup and login
    user1_id = user_signup("user1", "[email protected]", "password1")
    user2_id = user_signup("user2", "[email protected]", "password2")
    user3_id = user_signup("user3", "[email protected]", "password3")

    user1 = user_login("[email protected]", "password1")
    user2 = user_login("[email protected]", "password2")
    user3 = user_login("[email protected]", "password3")

    print(f"Logged in as User {user1.user_id}: {user1.username}")
    print(f"Logged in as User {user2.user_id}: {user2.username}")
    print(f"Logged in as User {user3.user_id}: {user3.username}")

    # Start a conversation
    conv1 = start_conversation(user1_id)
    print(f"Started Conversation {conv1.conversation_id} with User {conv1.user_id} at {conv1.timestamp}")

    # Send messages
    msg1 = send_message(conv1.conversation_id, user1_id, "Hi!")
    msg2 = send_message(conv1.conversation_id, user2_id, "Hello!")
    msg3 = send_message(conv1.conversation_id, user1_id, "How are you?")
    print(f"Sent Message {msg1.message_id} to Conversation {msg1.conversation_id} at {msg1.timestamp}")
    print(f"Sent Message {msg2.message_id} to Conversation {msg2.conversation_id} at {msg2.timestamp}")
    print(f"Sent Message {msg3.message_id} to Conversation {msg3.conversation_id} at {msg3.timestamp}")

    # Get user's conversations and conversation messages
    user1_conversations = get_user_conversations(user1_id)
    print(f"User {user1.username}'s Conversations: {[conv.conversation_id for conv in user1_conversations]}")

    for conv in user1_conversations:
        conversation_messages = get_conversation_messages(conv.conversation_id)
        print(f"Messages in Conversation {conv.conversation_id}: {[msg.content for msg in conversation_messages]}")

# low_level_api.py

from flask import Flask, request, jsonify
import requests

app = Flask(__name__)

# A dictionary to store ongoing conversations with their context
conversations = {}


def generate_response(message):
    # Replace 'YOUR_OPENAI_API_KEY' with your actual OpenAI API key
    api_url = 'https://api.openai.com/v1/engines/davinci-codex/completions'
    headers = {
        'Authorization': 'Bearer YOUR_OPENAI_API_KEY',
    }
    payload = {
        'prompt': message,
        'max_tokens': 150,
    }
    response = requests.post(api_url, headers=headers, json=payload)
    response_data = response.json()
    return response_data['choices'][0]['text']


@app.route('/start_conversation', methods=['POST'])
def start_conversation():
    data = request.json
    user_id = data.get('user_id')
    message = data.get('message')

    response = generate_response(message)

    # Create a new conversation ID for this user
    conversation_id = user_id + '_' + str(len(conversations.get(user_id, [])) + 1)

    # Save the conversation context
    conversations.setdefault(user_id, []).append({
        'conversation_id': conversation_id,
        'context': response,
    })

    return jsonify({
        'conversation_id': conversation_id,
        'response': response,
    })


@app.route('/continue_conversation', methods=['POST'])
def continue_conversation():
    data = request.json
    conversation_id = data.get('conversation_id')
    message = data.get('message')

    # Retrieve the conversation context based on conversation_id
    user_id = conversation_id.split('_')[0]
    conversation_data = next((conv for conv in conversations.get(user_id, []) if conv['conversation_id'] == conversation_id), None)

    if not conversation_data:
        return jsonify({
            'error': 'Invalid conversation_id',
        }), 404

    # Append the new message to the existing context
    conversation_context = conversation_data['context'] + ' ' + message

    response = generate_response(conversation_context)

    # Update the conversation context
    conversation_data['context'] = conversation_context + ' ' + response

    return jsonify({
        'response': response,
    })


if __name__ == '__main__':
    app.run(debug=True)

import time

class LineMessagingService:
    def __init__(self):
        self.message_count = 0
        self.storage_usage = 0

    def send_message(self, sender_id, receiver_id, message_content):
        # Simulate sending the message and updating the message count and storage usage
        time.sleep(0.001)  # Simulate message processing time
        message_size_kb = len(message_content.encode()) / 1024
        self.message_count += 1
        self.storage_usage += message_size_kb

    def get_total_message_count(self):
        return self.message_count

    def get_storage_usage(self):
        return self.storage_usage

line_service = LineMessagingService()

for _ in range(100_000):  # Simulate 100,000 messages sent in one second
    line_service.send_message('user1', 'user2', 'Hello, how are you?')

print("Total messages sent:", line_service.get_total_message_count())
print("Storage usage (KB):", line_service.get_storage_usage())

import requests
import json

class LineFeedGenerationService:
    def __init__(self, access_token):
        self.base_url = 'https://api.line.me/'
        self.access_token = access_token

    def get_feed(self, user_id):
        feed_endpoint = f'{self.base_url}users/{user_id}/feed'
        headers = {'Authorization': f'Bearer {self.access_token}'}
        response = requests.get(feed_endpoint, headers=headers)

        if response.status_code == 200:
            feed_data = json.loads(response.text)
            return feed_data
        else:
            print(f"Error: Unable to fetch feed. Status Code: {response.status_code}")
            return None

# Usage example:
access_token = '<YOUR_ACCESS_TOKEN>'
user_id = '<USER_ID>'
feed_service = LineFeedGenerationService(access_token)
user_feed = feed_service.get_feed(user_id)

if user_feed:
    for post in user_feed['posts']:
        print(f"Post ID: {post['post_id']}")
        print(f"Content: {post['content']}")
        print(f"Timestamp: {post['timestamp']}")
        print("-------------------------------")

import requests
import json
from datetime import datetime

class LineMessagingService:
    def __init__(self, access_token):
        self.base_url = 'https://api.line.me/'
        self.access_token = access_token

    def send_message(self, sender_id, receiver_id, message_content):
        message_endpoint = f'{self.base_url}messages'
        headers = {
            'Authorization': f'Bearer {self.access_token}',
            'Content-Type': 'application/json'
        }
        data = {
            'sender_id': sender_id,
            'receiver_id': receiver_id,
            'message_content': message_content,
            'timestamp': str(datetime.now())
        }
        response = requests.post(message_endpoint, headers=headers, data=json.dumps(data))

        if response.status_code == 200:
            print(f"Message sent successfully from {sender_id} to {receiver_id}.")
        else:
            print(f"Error: Unable to send message. Status Code: {response.status_code}")

class LineLikeService:
    def __init__(self, access_token):
        self.base_url = 'https://api.line.me/'
        self.access_token = access_token

    def like_post(self, user_id, post_id):
        like_endpoint = f'{self.base_url}users/{user_id}/posts/{post_id}/like'
        headers = {'Authorization': f'Bearer {self.access_token}'}
        response = requests.post(like_endpoint, headers=headers)

        if response.status_code == 200:
            print(f"Post ID {post_id} liked by User ID {user_id}.")
        else:
            print(f"Error: Unable to like post. Status Code: {response.status_code}")

class LineFollowService:
    def __init__(self, access_token):
        self.base_url = 'https://api.line.me/'
        self.access_token = access_token

    def follow_user(self, user_id, target_user_id):
        follow_endpoint = f'{self.base_url}users/{user_id}/follow/{target_user_id}'
        headers = {'Authorization': f'Bearer {self.access_token}'}
        response = requests.post(follow_endpoint, headers=headers)

        if response.status_code == 200:
            print(f"User ID {user_id} follows User ID {target_user_id}.")
        else:
            print(f"Error: Unable to follow user. Status Code: {response.status_code}")

class LinePostService:
    def __init__(self, access_token):
        self.base_url = 'https://api.line.me/'
        self.access_token = access_token

    def create_post(self, user_id, content):
        post_endpoint = f'{self.base_url}users/{user_id}/posts'
        headers = {
            'Authorization': f'Bearer {self.access_token}',
            'Content-Type': 'application/json'
        }
        data = {
            'user_id': user_id,
            'content': content,
            'timestamp': str(datetime.now())
        }
        response = requests.post(post_endpoint, headers=headers, data=json.dumps(data))

        if response.status_code == 200:
            print(f"Post created successfully for User ID {user_id}.")
        else:
            print(f"Error: Unable to create post. Status Code: {response.status_code}")

class LineGenerateFeedService:
    def __init__(self, access_token):
        self.base_url = 'https://api.line.me/'
        self.access_token = access_token

    def generate_feed(self, user_id):
        feed_endpoint = f'{self.base_url}users/{user_id}/feed'
        headers = {'Authorization': f'Bearer {self.access_token}'}
        response = requests.get(feed_endpoint, headers=headers)

        if response.status_code == 200:
            feed_data = json.loads(response.text)
            return feed_data
        else:
            print(f"Error: Unable to fetch feed. Status Code: {response.status_code}")
            return None

# Usage example:
access_token = '<YOUR_ACCESS_TOKEN>'
user_id = '<USER_ID>'

messaging_service = LineMessagingService(access_token)
messaging_service.send_message(user_id, 'receiver_user_id', 'Hello, how are you?')

like_service = LineLikeService(access_token)
like_service.like_post(user_id, 'post_id_to_like')

follow_service = LineFollowService(access_token)
follow_service.follow_user(user_id, 'target_user_id_to_follow')

post_service = LinePostService(access_token)
post_service.create_post(user_id, 'This is my new post!')

generate_feed_service = LineGenerateFeedService(access_token)
user_feed = generate_feed_service.generate_feed(user_id)
if user_feed:
    for post in user_feed['posts']:
        print(f"Post ID: {post['post_id']}")
        print(f"Content: {post['content']}")
        print(f"Timestamp: {post['timestamp']}")
        print("-------------------------------")

# Low-Level API Design for LINE System

from datetime import datetime

class MessagingService:
    def send_message(self, sender_id, receiver_id, message_content):
        # Assume there's a database to store messages
        # Save the message with sender_id, receiver_id, and message_content
        message = {
            'sender_id': sender_id,
            'receiver_id': receiver_id,
            'message_content': message_content,
            'timestamp': datetime.now()
        }
        # Save the message to the database
        self.save_message_to_database(message)

    def save_message_to_database(self, message):
        # Logic to save the message to the database
        pass

class TimelineService:
    def create_timeline_post(self, user_id, post_content):
        # Assume there's a database to store timeline posts
        # Save the post with user_id, post_content, and timestamp
        post = {
            'user_id': user_id,
            'post_content': post_content,
            'timestamp': datetime.now()
        }
        # Save the post to the database
        self.save_post_to_database(post)

    def save_post_to_database(self, post):
        # Logic to save the post to the database
        pass

class UserService:
    def get_user_profile(self, user_id):
        # Assume there's a database to store user profiles
        # Fetch the user profile using user_id
        user_profile = self.get_user_profile_from_database(user_id)
        return user_profile

    def get_user_profile_from_database(self, user_id):
        # Logic to fetch the user profile from the database
        # For simplicity, returning a dictionary here
        return {
            'user_id': user_id,
            'username': 'user1',
            'email': '[email protected]',
            'profile_picture_url': 'https://example.com/user1/profile.jpg',
            # Other user profile attributes
        }

class FriendshipService:
    def add_friend(self, user_id, friend_id):
        # Assume there's a database to store friend connections
        # Save the friend connection between user_id and friend_id
        friendship = {
            'user_id': user_id,
            'friend_id': friend_id,
            'timestamp': datetime.now()
        }
        # Save the friend connection to the database
        self.save_friendship_to_database(friendship)

    def save_friendship_to_database(self, friendship):
        # Logic to save the friend connection to the database
        pass

# Usage example:
messaging_service = MessagingService()
timeline_service = TimelineService()
user_service = UserService()
friendship_service = FriendshipService()

# Sending a message
messaging_service.send_message('user1', 'user2', 'Hello, how are you?')

# Creating a timeline post
timeline_service.create_timeline_post('user1', 'Having a great day!')

# Getting user profile
user_profile = user_service.get_user_profile('user1')
print(user_profile)

# Adding a friend
friendship_service.add_friend('user1', 'user2')

from flask import Flask, request, jsonify

app = Flask(__name__)
instagram = Instagram()

@app.route('/users', methods=['POST'])
def create_user():
    data = request.get_json()
    user_id = data.get('user_id')
    username = data.get('username')
    password = data.get('password')
    email = data.get('email')

    user = User(user_id, username, password, email)
    instagram.add_user(user)

    return jsonify({"message": "User created successfully"}), 201

@app.route('/login', methods=['POST'])
def login():
    data = request.get_json()
    user_id = data.get('user_id')
    password = data.get('password')

    user = instagram.get_user_by_id(user_id)
    if not user or user.password != password:
        return jsonify({"message": "Invalid credentials"}), 401

    return jsonify({"message": "Login successful"}), 200

@app.route('/users/<user_id>', methods=['GET'])
def get_user(user_id):
    user = instagram.get_user_by_id(user_id)
    if not user:
        return jsonify({"message": "User not found"}), 404

    return jsonify({
        "user_id": user.user_id,
        "username": user.username,
        "email": user.email,
        "followers": user.followers,
        "following": user.following,
        "posts": [post.post_id for post in user.posts]
    }), 200

@app.route('/users/<user_id>/posts', methods=['POST'])
def create_post(user_id):
    user = instagram.get_user_by_id(user_id)
    if not user:
        return jsonify({"message": "User not found"}), 404

    data = request.get_json()
    caption = data.get('caption')
    image_url = data.get('image_url')
    timestamp = data.get('timestamp')

    instagram.create_post(user_id, caption, image_url, timestamp)
    return jsonify({"message": "Post created"}), 200

@app.route('/users/<user_id>/feed', methods=['GET'])
def get_feed(user_id):
    user = instagram.get_user_by_id(user_id)
    if not user:
        return jsonify({"message": "User not found"}), 404

    feed = instagram.get_feed(user_id)
    return jsonify({
        "feed": [{
            "post_id": post.post_id,
            "user_id": post.user.user_id,
            "caption": post.caption,
            "image_url": post.image_url,
            "timestamp": post.timestamp
        } for post in feed]
    }), 200

if __name__ == '__main__':
    app.run()

send_message(sender_id, receiver_id, message_content): This API will be responsible for sending a message from one user to another. It will take the sender's ID, receiver's ID, and the content of the message as input.

create_timeline_post(user_id, post_content): This API will allow users to create a post on their timeline. It will take the user's ID and the content of the post as input.

get_user_profile(user_id): This API will retrieve user profile information based on the user's ID.

add_friend(user_id, friend_id): This API will enable users to add a friend connection between two users. It will take the user's ID and the friend's ID as input.

class User:
    def __init__(self, user_id, username, password, email):
        self.user_id = user_id
        self.username = username
        self.password = password
        self.email = email
        self.followers = []
        self.following = []
        self.posts = []

class Post:
    def __init__(self, post_id, user, caption, image_url, timestamp):
        self.post_id = post_id
        self.user = user
        self.caption = caption
        self.image_url = image_url
        self.timestamp = timestamp

class Instagram:
    def __init__(self):
        self.users = {}

    def add_user(self, user):
        self.users[user.user_id] = user

    def get_user_by_id(self, user_id):
        return self.users.get(user_id)

    def create_post(self, user_id, caption, image_url, timestamp):
        user = self.get_user_by_id(user_id)
        if not user:
            print("User not found")
            return

        post_id = len(user.posts) + 1
        post = Post(post_id, user, caption, image_url, timestamp)
        user.posts.append(post)

    def get_feed(self, user_id):
        user = self.get_user_by_id(user_id)
        if not user:
            print("User not found")
            return []

        feed = []
        for following_user_id in user.following:
            following_user = self.get_user_by_id(following_user_id)
            feed.extend(following_user.posts)

        sorted_feed = sorted(feed, key=lambda post: post.timestamp, reverse=True)
        return sorted_feed

from datetime import datetime

# Data Storage Simulation (Dictionary-based)
users = {
    'user1': {
        'username': 'User 1',
        'email': '[email protected]',
        'profile_picture_url': 'https://example.com/user1/profile.jpg',
        'friends': ['user2'],
        'timeline': []
    },
    'user2': {
        'username': 'User 2',
        'email': '[email protected]',
        'profile_picture_url': 'https://example.com/user2/profile.jpg',
        'friends': ['user1'],
        'timeline': []
    }
}

messages = []

# High-Level API Design for LINE System
class LineSystem:
    def send_message(self, sender_id, receiver_id, message_content):
        if sender_id not in users or receiver_id not in users:
            raise ValueError("Invalid sender or receiver ID.")
        
        message = {
            'sender_id': sender_id,
            'receiver_id': receiver_id,
            'message_content': message_content,
            'timestamp': datetime.now().strftime('%Y-%m-%d %H:%M:%S')
        }
        messages.append(message)

    def create_timeline_post(self, user_id, post_content):
        if user_id not in users:
            raise ValueError("Invalid user ID.")
        
        post = {
            'user_id': user_id,
            'post_content': post_content,
            'timestamp': datetime.now().strftime('%Y-%m-%d %H:%M:%S')
        }
        users[user_id]['timeline'].append(post)

    def get_user_profile(self, user_id):
        if user_id not in users:
            raise ValueError("Invalid user ID.")
        
        return users[user_id]

    def add_friend(self, user_id, friend_id):
        if user_id not in users or friend_id not in users:
            raise ValueError("Invalid user or friend ID.")
        
        if friend_id not in users[user_id]['friends']:
            users[user_id]['friends'].append(friend_id)
            users[friend_id]['friends'].append(user_id)

# Usage example:
line_system = LineSystem()

# Sending a message
line_system.send_message('user1', 'user2', 'Hello, how are you?')

# Creating a timeline post
line_system.create_timeline_post('user1', 'Having a great day!')

# Getting user profile
user_profile = line_system.get_user_profile('user1')
print("User Profile:")
print(user_profile)

# Adding a friend
line_system.add_friend('user1', 'user2')

# Displaying messages and timeline
print("\nMessages:")
for message in messages:
    print(f"{message['timestamp']} - {message['sender_id']} to {message['receiver_id']}: {message['message_content']}")

print("\nTimeline Posts:")
for user_id, user_data in users.items():
    print(f"User: {user_data['username']} ({user_id})")
    for post in user_data['timeline']:
        print(f"{post['timestamp']} - {post['user_id']}: {post['post_content']}")
    print("--------------------------")

def calculate_storage_estimate():
    total_users = 100_000_000
    daily_active_users = 30_000_000
    notes_per_user_per_day = 5
    total_notes_per_day = total_users * notes_per_user_per_day
    read_to_write_ratio = 100

    # Total number of notes read per day
    total_notes_read_per_day = total_notes_per_day * read_to_write_ratio

    # Assuming each note size is 1 MB
    note_size_MB = 1
    total_storage_per_day_TB = total_notes_per_day * note_size_MB / 1024

    # Total Storage for 3 years (approx. 274 PB)
    total_storage_for_3_years_TB = total_storage_per_day_TB * 5 * 365

    # Requests per second
    requests_per_second = total_notes_read_per_day / (3600 * 24)

    return total_storage_per_day_TB, total_storage_for_3_years_TB, requests_per_second


if __name__ == '__main__':
    total_storage_per_day, total_storage_for_3_years, requests_per_second = calculate_storage_estimate()

    print(f"Total Storage per day: {total_storage_per_day:.2f} TB")
    print(f"Total Storage for 3 years: {total_storage_for_3_years:.2f} PB")
    print(f"Requests per second: {requests_per_second:.2f}")

class UserService:
    def __init__(self):
        self.users = {}
        self.user_id_counter = 1

    def create_user(self, username, email, password):
        user_id = self.user_id_counter
        user = {
            'user_id': user_id,
            'username': username,
            'email': email,
            'password': password
        }
        self.users[user_id] = user
        self.user_id_counter += 1
        return user_id

    def authenticate_user(self, username, password):
        for user in self.users.values():
            if user['username'] == username and user['password'] == password:
                return user['user_id']
        return None

    def get_user_profile(self, user_id):
        return self.users.get(user_id, None)

    def update_user_profile(self, user_id, username, email, password):
        user = self.users.get(user_id, None)
        if user:
            user['username'] = username
            user['email'] = email
            user['password'] = password
            return True
        return False

# Usage example
user_service = UserService()
user_id = user_service.create_user('john_doe', '[email protected]', 'password123')
print(user_service.authenticate_user('john_doe', 'password123'))
print(user_service.get_user_profile(user_id))
user_service.update_user_profile(user_id, 'jane_doe', '[email protected]', 'new_password')
print(user_service.get_user_profile(user_id))

class NotebookService:
    def __init__(self):
        self.notebooks = {}
        self.notebook_id_counter = 1

    def create_notebook(self, user_id, title):
        notebook_id = self.notebook_id_counter
        notebook = {
            'notebook_id': notebook_id,
            'user_id': user_id,
            'title': title
        }
        self.notebooks[notebook_id] = notebook
        self.notebook_id_counter += 1
        return notebook_id

    def get_notebooks_for_user(self, user_id):
        user_notebooks = []
        for notebook in self.notebooks.values():
            if notebook['user_id'] == user_id:
                user_notebooks.append(notebook)
        return user_notebooks

    def get_notebook_details(self, notebook_id):
        return self.notebooks.get(notebook_id, None)

    def update_notebook_title(self, notebook_id, title):
        notebook = self.notebooks.get(notebook_id, None)
        if notebook:
            notebook['title'] = title
            return True
        return False

# Usage example
notebook_service = NotebookService()
notebook_id = notebook_service.create_notebook(user_id, 'My Notebook')
print(notebook_service.get_notebooks_for_user(user_id))
print(notebook_service.get_notebook_details(notebook_id))
notebook_service.update_notebook_title(notebook_id, 'New Notebook Title')
print(notebook_service.get_notebook_details(notebook_id))

class SectionService:
    def __init__(self):
        self.sections = {}
        self.section_id_counter = 1

    def create_section(self, notebook_id, title):
        section_id = self.section_id_counter
        section = {
            'section_id': section_id,
            'notebook_id': notebook_id,
            'title': title
        }
        self.sections[section_id] = section
        self.section_id_counter += 1
        return section_id

    def get_sections_for_notebook(self, notebook_id):
        notebook_sections = []
        for section in self.sections.values():
            if section['notebook_id'] == notebook_id:
                notebook_sections.append(section)
        return notebook_sections

    def get_section_details(self, section_id):
        return self.sections.get(section_id, None)

    def update_section_title(self, section_id, title):
        section = self.sections.get(section_id, None)
        if section:
            section['title'] = title
            return True
        return False

# Usage example
section_service = SectionService()
section_id = section_service.create_section(notebook_id, 'My Section')
print(section_service.get_sections_for_notebook(notebook_id))
print(section_service.get_section_details(section_id))
section_service.update_section_title(section_id, 'New Section Title')
print(section_service.get_section_details(section_id))

class PageService:
    def __init__(self):
        self.pages = {}
        self.page_id_counter = 1

    def create_page(self, section_id, title, content):
        page_id = self.page_id_counter
        page = {
            'page_id': page_id,
            'section_id': section_id,
            'title': title,
            'content': content
        }
        self.pages[page_id] = page
        self.page_id_counter += 1
        return page_id

    def get_pages_for_section(self, section_id):
        section_pages = []
        for page in self.pages.values():
            if page['section_id'] == section_id:
                section_pages.append(page)
        return section_pages

    def get_page_details(self, page_id):
        return self.pages.get(page_id, None)

    def update_page_details(self, page_id, title, content):
        page = self.pages.get(page_id, None)
        if page:
            page['title'] = title
            page['content'] = content
            return True
        return False

# Usage example
page_service = PageService()
page_id = page_service.create_page(section_id, 'My Page', 'This is the content of my page.')
print(page_service.get_pages_for_section(section_id))
print(page_service.get_page_details(page_id))
page_service.update_page_details(page_id, 'New Page Title', 'Updated content of my page.')
print(page_service.get_page_details(page_id))

User Management API:

POST /users: Create a new user account. This endpoint will accept user details like username, email, and password in the request body and create a new user account.
GET /users/{userId}: Get user details by userId. This endpoint will return the details of a specific user based on the provided userId.
PATCH /users/{userId}: Update user details. This endpoint will allow users to update their profile information like username, email, and password.
DELETE /users/{userId}: Delete a user account. This endpoint will delete the user account along with all associated notebooks, sections, and pages.

Notebook Management API:

POST /users/{userId}/notebooks: Create a new notebook. This endpoint will allow users to create a new notebook. The request body should contain the title of the notebook.
GET /users/{userId}/notebooks: Get all notebooks of a user. This endpoint will return a list of all notebooks belonging to a specific user.
GET /notebooks/{notebookId}: Get notebook details. This endpoint will return the details of a specific notebook based on the provided notebookId.
PATCH /notebooks/{notebookId}: Update notebook details. This endpoint will allow users to update the title of a notebook.
DELETE /notebooks/{notebookId}: Delete a notebook. This endpoint will delete the specified notebook along with all its sections and pages.

Section Management API:

POST /notebooks/{notebookId}/sections: Create a new section. This endpoint will allow users to create a new section within a notebook. The request body should contain the title of the section.
GET /notebooks/{notebookId}/sections: Get all sections of a notebook. This endpoint will return a list of all sections within a specific notebook.
GET /sections/{sectionId}: Get section details. This endpoint will return the details of a specific section based on the provided sectionId.
PATCH /sections/{sectionId}: Update section details. This endpoint will allow users to update the title of a section.
DELETE /sections/{sectionId}: Delete a section. This endpoint will delete the specified section along with all its pages.

Page Management API:

POST /sections/{sectionId}/pages: Create a new page. This endpoint will allow users to create a new page within a section. The request body should contain the title and content of the page.
GET /sections/{sectionId}/pages: Get all pages of a section. This endpoint will return a list of all pages within a specific section.
GET /pages/{pageId}: Get page details. This endpoint will return the details of a specific page based on the provided pageId.
PATCH /pages/{pageId}: Update page details. This endpoint will allow users to update the title and content of a page.
DELETE /pages/{pageId}: Delete a page. This endpoint will delete the specified page.

Media Management API:

POST /pages/{pageId}/media: Upload media to a page. This endpoint will allow users to upload images, videos, or other media as attachments to a page.
GET /pages/{pageId}/media: Get all media of a page. This endpoint will return a list of all media attachments within a specific page.
GET /media/{mediaId}: Get media details. This endpoint will return the details of a specific media attachment based on the provided mediaId.
DELETE /media/{mediaId}: Delete media. This endpoint will delete the specified media attachment from a page.