from flask import Flask, request, jsonify

app = Flask(__name__)

# Video Management System
class VideoSystem:
    def __init__(self):
        self.videos = {}
        self.followers = {}
        self.recommendations = {}
        self.feed = {}
        self.pre_cache = []

    def upload_video(self, video_id, video_url, user_id):
        self.videos[video_id] = (video_url, user_id)
        self.notify_followers(user_id, video_id)

    def get_video(self, video_id):
        if video_id in self.videos:
            return self.videos[video_id][0]
        return None

    def follow_user(self, user_id, follow_id):
        if user_id in self.followers:
            self.followers[user_id].append(follow_id)
        else:
            self.followers[user_id] = [follow_id]

    def get_followers(self, user_id):
        if user_id in self.followers:
            return self.followers[user_id]
        return None

    def add_recommendation(self, video_id, topic):
        if topic in self.recommendations:
            self.recommendations[topic].append(video_id)
        else:
            self.recommendations[topic] = [video_id]

    def get_recommendations(self, topic):
        if topic in self.recommendations:
            return self.recommendations[topic]
        return None

    def add_to_feed(self, video_id):
        self.feed[video_id] = self.videos[video_id]

    def get_feed(self):
        return self.feed.values()

    def add_to_pre_cache(self, video_id):
        self.pre_cache.append(video_id)

    def get_pre_cache(self):
        return self.pre_cache

    def notify_followers(self, user_id, video_id):
        followers = self.get_followers(user_id)
        if followers:
            for follower in followers:
                # push notification to the followers
                print(f"Notification sent to {follower}: New video uploaded by {user_id}")

# API Gateway Service
@app.route('/video', methods=['POST'])
def upload_video():
    video_system = VideoSystem()
    video_id = request.json['video_id']
    video_url = request.json['video_url']
    user_id = request.json['user_id']
    video_system.upload_video(video_id, video_url, user_id)
    video_system.add_to_feed(video_id)
    return jsonify({'result': 'Video uploaded successfully'})

import datetime
from typing import List, Dict

# Define a Video class to store information about a video
class Video:
    def __init__(self, id: int, title: str, description: str, created_at: datetime, engagement: int):
        self.id = id
        self.title = title
        self.description = description
        self.created_at = created_at
        self.engagement = engagement

# Define a User class to store information about a user
class User:
    def __init__(self, id: int, name: str, videos: List[Video]):
        self.id = id
        self.name = name
        self.videos = videos

# Define a global list of users and their videos
users = []

# Define the upload video API
def upload_video(user_id: int, video: Video):
    # Find the user who is uploading the video
    user = next((user for user in users if user.id == user_id), None)
    if not user:
        # If the user does not exist, create a new user
        user = User(user_id, "User {}".format(user_id), [])
        users.append(user)
    # Add the video to the user's list of videos
    user.videos.append(video)

# Define the feed service
def generate_feed():
    # Sort the users by the engagement of their latest video
    users.sort(key=lambda user: user.videos[-1].engagement, reverse=True)
    # Return the latest video from each user
    return [user.videos[-1] for user in users]

# Define the notification service
def send_notifications(followers: List[int], video: Video):
    # Get the names of the followers who should receive the notification
    follower_names = [user.name for user in users if user.id in followers]
    # Print the notification for each follower
    for name in follower_names:
        print("Notification for {}: New video '{}' uploaded by {}".format(name, video.title, video.user.name))

# Example usage of the services

# Upload a video for user 1
video = Video(1, "My First Video", "A video about my first day at OpenAI", datetime.datetime.now(), 10)
upload_video(1, video)

# Upload a video for user 2
video = Video(2, "My Second Video", "A video about my second day at OpenAI", datetime.datetime.now(), 20)
upload_video(2, video)

# Get the feed
feed = generate_feed()
for video in feed:
    print("{}: {} ({} views)".format(video.user.name, video.title, video.engagement))

# Send notifications to followers of user 2
send_notifications([1], video)

import java.util.HashMap;
import java.util.Map;

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
    // ...
}

public class Video {
    private String videoId;
    private String title;
    private String description;
    private String url;
    // ...

    public Video(String videoId, String title, String description, String url) {
        this.videoId = videoId;
        this.title = title;
        this.description = description;
        this.url = url;
    }

    // Getters and setters
    // ...
}

public class VideoUploadManager {
    public void uploadVideo(User user, String title, String description, String url) {
        // Generate a unique video ID
        String videoId = generateUniqueId();

        // Store video file in a distributed storage system
        boolean isStored = storeVideoInDistributedSystem(videoId, url);

        if (isStored) {
            // Create a Video object
            Video video = new Video(videoId, title, description, url);

            // Store video metadata in a database
            saveVideoMetadata(video);

            // Associate video with the user
            user.addVideo(video);

            System.out.println("Video uploaded successfully.");
        } else {
            System.out.println("Failed to store video file.");
        }
    }

    // Other video upload methods
    // ...
}

public class DistributedStorageManager {
    public boolean storeVideoInDistributedSystem(String videoId, String url) {
        // Store video file in the distributed storage system
        // ...
    }

    // Other methods for video retrieval, replication, sharding, caching, etc.
    // ...
}

public class TikTokApp {
    private UserManager userManager;
    private VideoUploadManager videoUploadManager;
    private DistributedStorageManager storageManager;
    // ...

    public TikTokApp() {
        this.userManager = new UserManager();
        this.videoUploadManager = new VideoUploadManager();
        this.storageManager = new DistributedStorageManager();
        // ...
    }

    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 uploadVideo(User user, String title, String description, String url) {
        videoUploadManager.uploadVideo(user, title, description, url);
    }

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

public class Main {
    public static void main(String[] args) {
        // Create an instance of the TikTok app
        TikTokApp tikTokApp = new TikTokApp();

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

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

        // Upload a video for the logged-in user
        if (loggedInUser != null) {
            tikTokApp.uploadVideo(loggedInUser, "My Video", "Check out my amazing video!", "https://example.com/my_video.mp4");
        }
    }
}

from flask import Flask, request, jsonify

app = Flask(__name__)

# User Service API
@app.route('/users', methods=['POST'])
def create_user():
    # create a new user and return user ID
    # actual implementation may involve authentication and user management
    return jsonify({'user_id': 'user123'})

@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, 'username': 'johndoe', 'bio': 'I love making TikToks!', 'followers': 1000, 'following': 500})

@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, 'username': 'johndoe', 'bio': 'I love making TikToks!', 'followers': 1000, 'following': 500})

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

@app.route('/videos/<video_id>', methods=['GET'])
def get_video_info(video_id):
    # retrieve information for the specified video ID
    # actual implementation may involve retrieving video information from a database
    return jsonify({'video_id': video_id, 'user_id': 'user123', 'description': 'Check out my new dance!', 'likes': 100, 'views': 1000})

@app.route('/videos/<video_id>/likes', methods=['POST'])
def like_video(video_id):
    # add a like for the specified video ID and return like ID
    # actual implementation may involve authentication, database updates, and user management
    return jsonify({'like_id': 'like123'})

@app.route('/videos/<video_id>/comments', methods=['POST'])
def post_comment(video_id):
    # post a comment for the specified video ID and return comment ID
    # actual implementation may involve authentication, database updates, and user management
    return jsonify({'comment_id': 'comment123'})

@app.route('/videos/<video_id>/comments', methods=['GET'])
def get_comments(video_id):
    # retrieve comments for the specified video ID
    # actual implementation may involve retrieving comments from a database
    return jsonify({'video_id': video_id, 'comments': [{'comment_id': 'comment123', 'user_id': 'user456', 'content': 'Awesome dance!', 'timestamp': '2023-02-19T10:15:00Z'}]})

# Discover Service API
@app.route('/discover', methods=['GET'])
def get_trending_videos():
    # retrieve the current trending videos
    # actual implementation may involve retrieving video information from a database and applying algorithms
    return jsonify({'videos': [{'video_id': 'video123', 'user_id': 'user123', 'description': 'Check out my new dance!', 'likes': 100, 'views': 1000}]})

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

from flask import Flask, request, jsonify

app = Flask(__name__)

# Video Management System
class VideoSystem:
    def __init__(self):
        self.videos = {}
        self.engagements = {}

    def upload_video(self, video_id, video_url):
        self.videos[video_id] = video_url

    def get_video(self, video_id):
        if video_id in self.videos:
            return self.videos[video_id]
        return None

    def add_engagement(self, video_id, engagement_type):
        if video_id in self.engagements:
            self.engagements[video_id].append(engagement_type)
        else:
            self.engagements[video_id] = [engagement_type]
    
    def get_engagement_details(self, video_id):
        if video_id in self.engagements:
            return self.engagements[video_id]
        return None

# API Gateway Service
@app.route('/video', methods=['POST'])
def upload_video():
    video_system = VideoSystem()
    video_id = request.json['video_id']
    video_url = request.json['video_url']
    video_system.upload_video(video_id, video_url)
    return jsonify({'result': 'Video uploaded successfully'})

@app.route('/video/<video_id>', methods=['GET'])
def get_video(video_id):
    video_system = VideoSystem()
    result = video_system.get_video(video_id)
    return jsonify({'result': result})

@app.route('/video/<video_id>/engagement', methods=['POST'])
def add_engagement(video_id):
    video_system = VideoSystem()
    engagement_type = request.json['engagement_type']
    video_system.add_engagement(video_id, engagement_type)
    return jsonify({'result': 'Engagement added successfully'})

@app.route('/video/<video_id>/engagement', methods=['GET'])
def get_engagement_details(video_id):
    video_system = VideoSystem()
    result = video_system.get_engagement_details(video_id)
    return jsonify({'result': result})

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

import os

# specify the location of the video file and audio file
video_path = 'video.mp4'
audio_path = 'audio.mp3'

# use FFMPEG to combine the video and audio files into a single file
os.system(f'ffmpeg -i {video_path} -i {audio_path} -c:v copy -c:a aac -shortest output.mp4')

from TikTokAPI import TikTokAPI

# specify your TikTok username and password
username = 'your_username'
password = 'your_password'

# log in to TikTokAPI
api = TikTokAPI()
api.login(username, password)

# specify the path to the video file
video_path = 'video.mp4'

# upload the video to your TikTok account
api.upload_video(video_path, caption='Check out my new video!')

from TikTokAPI import TikTokAPI

# specify your TikTok username and password
username = 'your_username'
password = 'your_password'

# log in to TikTokAPI
api = TikTokAPI()
api.login(username, password)

# search for videos by keyword
results = api.search_videos('cute animals')

# print the titles of the videos
for result in results:
    print(result['desc'])

from TikTokAPI import TikTokAPI

# specify your TikTok username and password
username = 'your_username'
password = 'your_password'

# log in to TikTokAPI
api = TikTokAPI()
api.login(username, password)

# get a video by its ID
video_id = '1234567890'
video = api.get_video_by_id(video_id)

# like the video
api.like_video(video['itemInfos']['id'])

# comment on the video
api.comment_video(video['itemInfos']['id'], 'Great video!')

# react to the video
api.send_direct_item(video['author']['id'], '❤️')

from TikTokAPI import TikTokAPI

# specify your TikTok username and password
username = 'your_username'
password = 'your_password'

# log in to TikTokAPI
api = TikTokAPI()
api.login(username, password)

# find a celebrity by their username
celebrity_username = 'celebrity_username'
celebrity = api.get_user(celebrity_username)

# create a video promoting a product
video_path = 'product_video.mp4'
caption = 'Check out this amazing product! #product #promotion'

# upload the video and tag the celebrity
api.upload_video(video_path, caption=caption, user_ids=[celebrity['userInfo']['user']['id']])

from TikTokAPI import TikTokAPI

# specify your TikTok username and password
username = 'your_username'
password = 'your_password'

# log in to TikTokAPI
api = TikTokAPI()
api.login(username, password)

# create a video in English
video_path_en = 'video_en.mp4'
caption_en = 'Check out my new video in English!'

# upload the video in English
api.upload_video(video_path_en, caption=caption_en)

# create a video in Spanish
video_path_es = 'video_es.mp4'
caption_es = '¡Mira mi nuevo video en español!'

# upload the video in Spanish
api.upload_video(video_path_es, caption=caption_es, language='es')

from flask import Flask, request, jsonify
from flask_sqlalchemy import SQLAlchemy

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///users.db'
db = SQLAlchemy(app)

class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(80), unique=True, nullable=False)
    password = db.Column(db.String(80), nullable=False)

    def __init__(self, username, password):
        self.username = username
        self.password = password

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

    new_user = User(username=username, password=password)
    db.session.add(new_user)
    db.session.commit()

    return jsonify({'message': 'User registered successfully'})

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

    user = User.query.filter_by(username=username).first()

    if user:
        if user.password == password:
            return jsonify({'message': 'Login successful'})
        else:
            return jsonify({'message': 'Invalid password'})
    else:
        return jsonify({'message': 'User not found'})

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

import boto3

s3 = boto3.client('s3')

def upload_video(video_file, video_name):
    s3.upload_file(video_file, 'my-bucket', video_name)

def download_video(video_name):
    s3.download_file('my-bucket', video_name, 'downloaded_video.mp4')
    # Perform further processing or return the video file path

def delete_video(video_name):
    s3.delete_object(Bucket='my-bucket', Key=video_name)

from surprise import Dataset, KNNBasic
from surprise.model_selection import train_test_split

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

# Split dataset into training and testing sets
trainset, testset = train_test_split(data, test_size=0.2)

# Create and train the KNNBasic algorithm
algo = KNNBasic()
algo.fit(trainset)

# Get recommendations for a specific user
user_id = '42'
recommendations = algo.get_neighbors(user_id, k=10)

print(recommendations)

from flask import Flask, request, jsonify
from flask_sqlalchemy import SQLAlchemy

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'postgresql://username:password@localhost/mydatabase'
db = SQLAlchemy(app)

class Video(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    title = db.Column(db.String(80), nullable=False)
    likes = db.Column(db.Integer, nullable=False, default=0)

    def __init__(self, title):
        self.title = title

@app.route('/like', methods=['POST'])
def like_video():
    data = request.get_json()
    video_id = data['video_id']

    video = Video.query.get(video_id)
    if video:
        video.likes += 1
        db.session.commit()
        return jsonify({'message': 'Video liked successfully'})
    else:
        return jsonify({'message': 'Video not found'})

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

from pymongo import MongoClient

# Connect to MongoDB
client = MongoClient('mongodb://localhost:27017/')
db = client['mydatabase']

def get_trending_videos():
    trending_videos = db.videos.find().sort('views', -1).limit(10)
    return [video['title'] for video in trending_videos]

if __name__ == '__main__':
    trending_videos = get_trending_videos()
    print(trending_videos)

from flask import Flask, render_template
from flask_socketio import SocketIO, emit

app = Flask(__name__)
app.config['SECRET_KEY'] = 'secret'
socketio = SocketIO(app)

@app.route('/')
def index():
    return render_template('index.html')

@socketio.on('message')
def handle_message(message):
    emit('message', message, broadcast=True)

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

from googleapiclient import discovery

client = discovery.build(
    'commentanalyzer',
    'v1alpha1',
    developerKey='your-api-key'
)

def analyze_content(content):
    analyze_request = {
        'comment': {'text': content},
        'requestedAttributes': {'TOXICITY': {}}
    }

    response = client.comments().analyze(body=analyze_request).execute()
    toxicity_score = response['attributeScores']['TOXICITY']['summaryScore']['value']
    
    if toxicity_score >= 0.8:
        return 'Content is toxic'
    else:
        return 'Content is safe'

from flask import Flask, request
from redis import Redis

app = Flask(__name__)
redis = Redis(host='localhost', port=6379)

@app.route('/video_view', methods=['POST'])
def track_video_view():
    video_id = request.form.get('video_id')
    redis.incr('views:' + video_id)
    return 'Video view tracked successfully'

@app.route('/video_views/<video_id>')
def get_video_views(video_id):
    views = redis.get('views:' + video_id)
    return f'Video views: {views}'

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

import redis

# Connect to Redis
r = redis.Redis(host='localhost', port=6379)

def get_video_data(video_id):
    # Check if video data exists in cache
    video_data = r.get('video:' + video_id)
    
    if video_data is None:
        # Fetch video data from the database
        video_data = fetch_video_data_from_database(video_id)
        
        # Store video data in cache for future use
        r.set('video:' + video_id, video_data)
        
    return video_data

from prometheus_client import Counter, start_http_server
import time

# Define a counter metric
requests_counter = Counter('myapp_requests_total', 'Total number of requests received')

def process_request():
    # Process the request
    requests_counter.inc()

if __name__ == '__main__':
    # Start the Prometheus metrics server
    start_http_server(8000)
    
    # Process requests
    while True:
        process_request()
        time.sleep(1)

class UserAuthenticationService:
    def register_user(self, username, email, password):
        # Logic to register a new user
        # Perform necessary validations, create user record in the database, and store user credentials securely
        user = User(username=username, email=email, password=hash_password(password))
        user.save()
        return {
            'status': 'success',
            'message': 'User registered successfully'
        }

    def login_user(self, email, password):
        # Logic to authenticate and login a user
        # Perform necessary validations, verify user credentials, and generate a session token
        user = User.objects.filter(email=email).first()
        if user and verify_password(password, user.password):
            session_token = generate_session_token()
            user.session_token = session_token
            user.save()
            return {
                'status': 'success',
                'message': 'User logged in successfully',
                'session_token': session_token
            }
        else:
            return {
                'status': 'failure',
                'error_message': 'Invalid email or password'
            }

    def logout_user(self, user_id):
        # Logic to logout a user
        # Invalidate the session token and perform any necessary cleanup
        user = User.objects.get(id=user_id)
        user.session_token = None
        user.save()
        return {
            'status': 'success',
            'message': 'User logged out successfully'
        }

class BankAccountService:
    def create_bank_account(self, user_id, account_number, bank_name):
        # Logic to create a new bank account for a user
        # Perform necessary validations, create a bank account record in the database, and link it to the user
        user = User.objects.get(id=user_id)
        bank_account = BankAccount(user=user, account_number=account_number, bank_name=bank_name)
        bank_account.save()
        return {
            'status': 'success',
            'message': 'Bank account created successfully'
        }

    def get_account_balance(self, user_id):
        # Logic to retrieve the account balance for a user
        # Fetch the account balance from the database based on the user ID
        bank_account = BankAccount.objects.filter(user_id=user_id).first()
        if bank_account:
            return bank_account.balance
        else:
            return 0

    def update_account_balance(self, user_id, amount):
        # Logic to update the account balance for a user
        # Update the account balance in the database based on the user ID and the specified amount
        bank_account = BankAccount.objects.get(user_id=user_id)
        bank_account.balance += amount
        bank_account.save()
        return {
            'status': 'success',
            'message': 'Account balance updated successfully'
        }

class TransactionService:
    def send_money(self, sender_id, receiver_id, amount):
        # Logic to process a money transfer between two users
        sender_balance = BankAccountService().get_account_balance(sender_id)
        if sender_balance >= amount:
            # Deduct the amount from the sender's account
            BankAccountService().update_account_balance(sender_id, -amount)
            # Credit the amount to the receiver's account
            BankAccountService().update_account_balance(receiver_id, amount)
            # Record the transaction in the database
            self.record_transaction(sender_id, receiver_id, amount)
            return {
                'status': 'success',
                'message': 'Money transfer successful'
            }
        else:
            return {
                'status': 'failure',
                'error_message': 'Insufficient funds'
            }

    def record_transaction(self, sender_id, receiver_id, amount):
        # Logic to record the transaction in the database
        # Perform necessary validations and store transaction details, including sender ID, receiver ID, and amount
        transaction = Transaction(sender_id=sender_id, receiver_id=receiver_id, amount=amount)
        transaction.save()

    def get_transaction_history(self, user_id):
        # Logic to retrieve the transaction history for a user
        # Fetch the transaction history from the database based on the user ID
        transactions = Transaction.objects.filter(Q(sender_id=user_id) | Q(receiver_id=user_id)).order_by('-timestamp')
        transaction_history = []
        for transaction in transactions:
            transaction_entry = {
                'transaction_id': transaction.id,
                'sender_id': transaction.sender_id,
                'receiver_id': transaction.receiver_id,
                'amount': transaction.amount,
                'timestamp': transaction.timestamp
            }
            transaction_history.append(transaction_entry)
        return transaction_history

class NotificationService:
    def send_notification(self, user_id, message):
        # Logic to send a notification to a user
        # Perform necessary validations and send the notification to the user using the preferred communication channel (e.g., email, SMS)
        user = User.objects.get(id=user_id)
        # Send notification using the preferred communication channel
        # (e.g., email, SMS, push notification)
        # Example: Sending an email notification
        send_email(user.email, 'Notification', message)
        return {
            'status': 'success',
            'message': 'Notification sent successfully'
        }

class FraudDetectionService:
    def detect_fraud(self, user_id, transaction_id):
        # Logic to detect fraud for a specific transaction
        # Perform fraud detection algorithms and checks based on user activity, transaction patterns, and other factors
        transaction = Transaction.objects.get(id=transaction_id)
        if transaction.sender_id != user_id:
            return {
                'status': 'failure',
                'error_message': 'Unauthorized transaction'
            }
        # Perform fraud detection checks and algorithms
        # Example: Suspicious activity detection based on transaction patterns
        if transaction.amount > 10000:
            # Trigger fraud alert and take appropriate actions
            return {
                'status': 'failure',
                'error_message': 'Fraud detected'
            }
        else:
            return {
                'status': 'success',
                'message': 'No fraud detected'
            }

class PaymentGatewayIntegrationService:
    def process_payment(self, user_id, payment_method, amount):
        # Logic to process a payment using an external payment gateway or banking system
        # Perform necessary validations, communicate with the payment gateway, and complete the payment process
        user = User.objects.get(id=user_id)
        # Connect to the payment gateway or banking system
        # Example: Simulating payment processing
        payment_status = simulate_payment_gateway_process(user.email, payment_method, amount)
        if payment_status == 'success':
            return {
                'status': 'success',
                'message': 'Payment processed successfully'
            }
        else:
            return {
                'status': 'failure',
                'error_message': 'Payment processing failed'
            }

class User:
    def __init__(self, user_id, username, email, password):
        self.user_id = user_id
        self.username = username
        self.email = email
        self.password = password
        # Additional attributes
        
class PaymentMethod:
    def __init__(self, payment_method_id, user_id, card_number, expiration_date, cvv, bank_account):
        self.payment_method_id = payment_method_id
        self.user_id = user_id
        self.card_number = card_number
        self.expiration_date = expiration_date
        self.cvv = cvv
        self.bank_account = bank_account
        # Additional attributes

class Transaction:
    def __init__(self, transaction_id, user_id, payment_method_id, amount, timestamp):
        self.transaction_id = transaction_id
        self.user_id = user_id
        self.payment_method_id = payment_method_id
        self.amount = amount
        self.timestamp = timestamp
        # Additional attributes

from flask import Flask, request

app = Flask(__name__)

users = {}
payment_methods = {}
transactions = {}

# User Management API

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

@app.route("/users/<user_id>", methods=["GET"])
def get_user(user_id):
    if user_id in users:
        user = users[user_id]
        return {
            "user_id": user.user_id,
            "username": user.username,
            "email": user.email
            # Additional attributes
        }, 200
    else:
        return {"message": "User not found"}, 404

@app.route("/users/<user_id>", methods=["PATCH"])
def update_user(user_id):
    if user_id in users:
        user = users[user_id]
        data = request.get_json()
        # Update user attributes based on data
        # user.username = data["username"]
        # user.email = data["email"]
        # Additional attribute updates
        
        return {"message": "User updated successfully"}, 200
    else:
        return {"message": "User not found"}, 404

@app.route("/users/<user_id>", methods=["DELETE"])
def delete_user(user_id):
    if user_id in users:
        del users[user_id]
        return {"message": "User deleted successfully"}, 200
    else:
        return {"message": "User not found"}, 404

# Payment Method API

@app.route("/users/<user_id>/payment-methods", methods=["POST"])
def add_payment_method(user_id):
    if user_id in users:
        data = request.get_json()
        payment_method_id = data["payment_method_id"]
        card_number = data["card_number"]
        expiration_date = data["expiration_date"]
        cvv = data["cvv"]
        bank_account = data["bank_account"]
        
        payment_method = PaymentMethod(payment_method_id, user_id, card_number, expiration_date, cvv, bank_account)
        payment_methods[payment_method_id] = payment_method
        
        return {"message": "Payment method added successfully"}, 201
    else:
        return {"message": "User not found"}, 404

@app.route("/users/<user_id>/payment-methods/<payment_method_id>", methods=["GET"])
def get_payment_method(user_id, payment_method_id):
    if user_id in users and payment_method_id in payment_methods:
        payment_method = payment_methods[payment_method_id]
        return {
            "payment_method_id": payment_method.payment_method_id,
            "user_id": payment_method.user_id,
            "card_number": payment_method.card_number,
            "expiration_date": payment_method.expiration_date,
            "cvv": payment_method.cvv,
            "bank_account": payment_method.bank_account
            # Additional attributes
        }, 200
    else:
        return {"message": "Payment method not found"}, 404

# Transaction API

@app.route("/users/<user_id>/transactions", methods=["POST"])
def initiate_transaction(user_id):
    if user_id in users:
        data = request.get_json()
        transaction_id = data["transaction_id"]
        payment_method_id = data["payment_method_id"]
        amount = data["amount"]
        timestamp = data["timestamp"]
        
        transaction = Transaction(transaction_id, user_id, payment_method_id, amount, timestamp)
        transactions[transaction_id] = transaction
        
        return {"message": "Transaction initiated successfully"}, 201
    else:
        return {"message": "User not found"}, 404

@app.route("/users/<user_id>/transactions/<transaction_id>", methods=["GET"])
def get_transaction(user_id, transaction_id):
    if user_id in users and transaction_id in transactions:
        transaction = transactions[transaction_id]
        return {
            "transaction_id": transaction.transaction_id,
            "user_id": transaction.user_id,
            "payment_method_id": transaction.payment_method_id,
            "amount": transaction.amount,
            "timestamp": transaction.timestamp
            # Additional attributes
        }, 200
    else:
        return {"message": "Transaction not found"}, 404

class PaymentProcessingAPI:
    def __init__(self, payment_gateway):
        self.payment_gateway = payment_gateway
    
    def process_payment(self, user_id, amount, payment_details):
        # Validate user ID and amount
        
        # Call payment gateway API for authorization
        authorization_result = self.payment_gateway.authorize_payment(user_id, amount, payment_details)
        
        if authorization_result['status'] == 'success':
            # Record successful transaction in the database
            transaction_id = self._record_transaction(user_id, amount, authorization_result['transaction_id'])
            
            # Perform settlement with payment gateway
            settlement_result = self.payment_gateway.settle_payment(transaction_id, amount)
            
            if settlement_result['status'] == 'success':
                # Update transaction status to settled in the database
                self._update_transaction_status(transaction_id, 'settled')
            
            return {
                'status': 'success',
                'transaction_id': transaction_id
            }
        else:
            return {
                'status': 'failure',
                'error_message': authorization_result['error_message']
            }
    
    def _record_transaction(self, user_id, amount, transaction_id):
        # Database logic to store transaction details
        transaction_id = generate_unique_transaction_id()
        # Store transaction details in the database
        
        return transaction_id
    
    def _update_transaction_status(self, transaction_id, status):
        # Database logic to update transaction status
        
        pass

class UserManagementAPI:
    def authenticate_user(self, username, password):
        # Authenticate user credentials
        if self._validate_credentials(username, password):
            # Generate and return a JWT token for authentication
            token = self._generate_jwt_token(username)
            return {
                'status': 'success',
                'token': token
            }
        else:
            return {
                'status': 'failure',
                'error_message': 'Invalid credentials'
            }
    
    def get_user_profile(self, user_id):
        # Retrieve user profile from the database
        user_profile = self._fetch_user_profile(user_id)
        
        if user_profile:
            return {
                'status': 'success',
                'user_profile': user_profile
            }
        else:
            return {
                'status': 'failure',
                'error_message': 'User not found'
            }
    
    def update_user_profile(self, user_id, updated_profile):
        # Update user profile in the database
        self._update_user_profile(user_id, updated_profile)
        
        return {
            'status': 'success'
        }
    
    def _validate_credentials(self, username, password):
        # Logic to validate user credentials
        
        pass
    
    def _generate_jwt_token(self, username):
        # Generate JWT token for authentication
        
        pass
    
    def _fetch_user_profile(self, user_id):
        # Database logic to fetch user profile
        
        pass
    
    def _update_user_profile(self, user_id, updated_profile):
        # Database logic to update user profile
        
        pass

class GooglePayAPI:
    def __init__(self, payment_processing_api, user_management_api):
        self.payment_processing_api = payment_processing_api
        self.user_management_api = user_management_api
    
    def make_payment(self, user_id, amount, payment_details):
        # Authenticate user
        authentication_result = self.user_management_api.authenticate_user(user_id)
        
        if authentication_result['status'] == 'success':
            # Process payment
            payment_result = self.payment_processing_api.process_payment(user_id, amount, payment_details)
            return payment_result
        else:
            return {
                'status': 'failure',
                'error_message': 'User authentication failed'
            }
    
    def get_user_profile(self, user_id):
        # Get user profile
        user_profile_result = self.user_management_api.get_user_profile(user_id)
        return user_profile_result
    
    def update_user_profile(self, user_id, updated_profile):
        # Update user profile
        update_result = self.user_management_api.update_user_profile(user_id, updated_profile)
        return update_result

class SeamlessPaymentIntegration:
    def process_payment(self, payment_method, amount):
        # Logic for processing payment using the specified payment method and amount
        if payment_method == 'credit_card':
            # Implement credit card payment processing
            # Perform necessary validations, communicate with payment gateways, and update transaction records
            return {
                'status': 'success',
                'message': 'Payment processed successfully'
            }
        elif payment_method == 'bank_account':
            # Implement bank account payment processing
            # Perform necessary validations, communicate with banking systems, and update transaction records
            return {
                'status': 'success',
                'message': 'Payment processed successfully'
            }
        elif payment_method == 'digital_wallet':
            # Implement digital wallet payment processing
            # Perform necessary validations, communicate with the digital wallet provider, and update transaction records
            return {
                'status': 'success',
                'message': 'Payment processed successfully'
            }
        else:
            return {
                'status': 'failure',
                'error_message': 'Invalid payment method'
            }

class NFCContactlessPayments:
    def make_contactless_payment(self, payment_terminal_id, amount):
        # Logic for making contactless payments using NFC technology
        if self._is_payment_terminal_compatible(payment_terminal_id):
            # Implement communication with the payment terminal
            # Perform necessary validations, authorize the payment, and update transaction records
            return {
                'status': 'success',
                'message': 'Payment processed successfully'
            }
        else:
            return {
                'status': 'failure',
                'error_message': 'Incompatible payment terminal'
            }
    
    def _is_payment_terminal_compatible(self, payment_terminal_id):
        # Logic to check if the payment terminal is compatible with NFC contactless payments
        # Implement the necessary checks and return True or False
        
        pass

class P2PMoneyTransfers:
    def send_money(self, sender_id, receiver_id, amount):
        # Logic for sending money from one user to another
        sender_balance = self._get_user_account_balance(sender_id)
        if sender_balance >= amount:
            # Deduct the amount from the sender's account
            self._update_account_balance(sender_id, sender_balance - amount)
            
            # Credit the amount to the receiver's account
            receiver_balance = self._get_user_account_balance(receiver_id)
            self._update_account_balance(receiver_id, receiver_balance + amount)
            
            return {
                'status': 'success',
                'message': 'Money transfer successful'
            }
        else:
            return {
                'status': 'failure',
                'error_message': 'Insufficient funds'
            }
    
    def _get_user_account_balance(self, user_id):
        # Logic to retrieve the account balance of a user
        # Implement the necessary database queries or API calls to fetch the balance
        
        pass
    
    def _update_account_balance(self, user_id, new_balance):
        # Logic to update the account balance of a user
        # Implement the necessary database updates or API calls to update the balance
        
        pass

class BillPaymentsAndRecharges:
    def pay_bill(self, bill_id, amount):
        # Logic for paying utility bills
        if self._validate_bill_payment(bill_id, amount):
            # Deduct the amount from the user's account
            self._update_account_balance(user_id, current_balance - amount)
            
            # Process the bill payment and update the bill status
            self._process_bill_payment(bill_id)
            
            return {
                'status': 'success',
                'message': 'Bill payment successful'
            }
        else:
            return {
                'status': 'failure',
                'error_message': 'Invalid bill payment'
            }
    
    def recharge_mobile_plan(self, mobile_number, amount):
        # Logic for recharging mobile phone plans
        if self._validate_mobile_recharge(mobile_number, amount):
            # Deduct the amount from the user's account
            self._update_account_balance(user_id, current_balance - amount)
            
            # Process the mobile plan recharge and update the plan details
            self._process_mobile_recharge(mobile_number)
            
            return {
                'status': 'success',
                'message': 'Mobile recharge successful'
            }
        else:
            return {
                'status': 'failure',
                'error_message': 'Invalid mobile recharge'
            }
    
    def purchase_digital_goods(self, product_id, amount):
        # Logic for purchasing digital goods
        if self._validate_digital_goods_purchase(product_id, amount):
            # Deduct the amount from the user's account
            self._update_account_balance(user_id, current_balance - amount)
            
            # Process the purchase and deliver the digital goods
            self._process_digital_goods_purchase(product_id)
            
            return {
                'status': 'success',
                'message': 'Purchase successful'
            }
        else:
            return {
                'status': 'failure',
                'error_message': 'Invalid purchase'
            }

def search_accommodations(location, price_range, amenities):
    # Perform search and filtering logic
    # Example implementation (pseudo-code)
    results = []
    for accommodation in all_accommodations:
        if accommodation.location == location and \
                accommodation.price >= price_range[0] and \
                accommodation.price <= price_range[1] and \
                all(amenity in accommodation.amenities for amenity in amenities):
            results.append(accommodation)
    return results

def update_availability(accommodation_id, check_in, check_out):
    # Update availability for a specific accommodation
    # Example implementation (pseudo-code)
    accommodation = get_accommodation(accommodation_id)
    if accommodation is not None:
        if accommodation.is_available(check_in, check_out):
            accommodation.update_availability(check_in, check_out)
            return True
    return False

def get_reviews(accommodation_id):
    # Retrieve reviews for a specific accommodation
    # Example implementation (pseudo-code)
    reviews = []
    for review in all_reviews:
        if review.accommodation_id == accommodation_id:
            reviews.append(review)
    return reviews

def submit_review(accommodation_id, user_id, rating, comment):
    # Submit a review for a specific accommodation
    # Example implementation (pseudo-code)
    review = Review(accommodation_id, user_id, rating, comment)
    all_reviews.append(review)
    return review

def secure_booking(accommodation_id, user_id, check_in, check_out, payment_info):
    # Process a secure booking transaction
    # Example implementation (pseudo-code)
    accommodation = get_accommodation(accommodation_id)
    user = get_user(user_id)
    if accommodation is not None and user is not None:
        if accommodation.is_available(check_in, check_out):
            booking = create_booking(accommodation_id, user_id, check_in, check_out)
            payment_result = process_payment(payment_info)
            if payment_result == 'success':
                return booking
    return None

def set_language(user_id, language):
    # Set the language preference for a specific user
    # Example implementation (pseudo-code)
    user = get_user(user_id)
    if user is not None:
        user.language = language
        return True
    return False

def set_currency(user_id, currency):
    # Set the currency preference for a specific user
    # Example implementation (pseudo-code)
    user = get_user(user_id)
    if user is not None:
        user.currency = currency
        return True
    return False

class User:
    def __init__(self, user_id, username, email, password):
        self.user_id = user_id
        self.username = username
        self.email = email
        self.password = password
        # Other user attributes
    
class Accommodation:
    def __init__(self, accommodation_id, name, location, price, amenities):
        self.accommodation_id = accommodation_id
        self.name = name
        self.location = location
        self.price = price
        self.amenities = amenities
        # Other accommodation attributes
        
class Booking:
    def __init__(self, booking_id, user_id, accommodation_id, check_in, check_out, guests):
        self.booking_id = booking_id
        self.user_id = user_id
        self.accommodation_id = accommodation_id
        self.check_in = check_in
        self.check_out = check_out
        self.guests = guests
        # Other booking attributes
        
class Review:
    def __init__(self, review_id, user_id, accommodation_id, rating, comment):
        self.review_id = review_id
        self.user_id = user_id
        self.accommodation_id = accommodation_id
        self.rating = rating
        self.comment = comment
        # Other review attributes

from flask import Flask, request, jsonify

app = Flask(__name__)

users = {}
accommodations = {}
bookings = {}
reviews = {}

# User Management API

@app.route('/users', methods=['POST'])
def create_user():
    data = request.json
    user_id = data['user_id']
    username = data['username']
    email = data['email']
    password = data['password']
    user = User(user_id, username, email, password)
    users[user_id] = user
    return jsonify(message='User created successfully'), 201

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

@app.route('/users/<user_id>', methods=['PATCH'])
def update_user(user_id):
    user = users.get(user_id)
    if user:
        data = request.json
        user.username = data.get('username', user.username)
        user.email = data.get('email', user.email)
        user.password = data.get('password', user.password)
        return jsonify(message='User updated successfully')
    return jsonify(message='User not found'), 404

# Accommodation Management API

@app.route('/accommodations', methods=['POST'])
def create_accommodation():
    data = request.json
    accommodation_id = data['accommodation_id']
    name = data['name']
    location = data['location']
    price = data['price']
    amenities = data['amenities']
    accommodation = Accommodation(accommodation_id, name, location, price, amenities)
    accommodations[accommodation_id] = accommodation
    return jsonify(message='Accommodation created successfully'), 201

@app.route('/accommodations/<accommodation_id>', methods=['GET'])
def get_accommodation(accommodation_id):
    accommodation = accommodations.get(accommodation_id)
    if accommodation:
        return jsonify(accommodation.__dict__)
    return jsonify(message='Accommodation not found'), 404

@app.route('/accommodations/<accommodation_id>', methods=['PATCH'])
def update_accommodation(accommodation_id):
    accommodation = accommodations.get(accommodation_id)
    if accommodation:
        data = request.json
        accommodation.name = data.get('name', accommodation.name)
        accommodation.location = data.get('location', accommodation.location)
        accommodation.price = data.get('price', accommodation.price)
        accommodation.amenities = data.get('amenities', accommodation.amenities)
        return jsonify(message='Accommodation updated successfully')
    return jsonify(message='Accommodation not found'), 404

@app.route('/accommodations/<accommodation_id>', methods=['DELETE'])
def delete_accommodation(accommodation_id):
    if accommodation_id in accommodations:
        del accommodations[accommodation_id]
        return jsonify(message='Accommodation deleted successfully')
    return jsonify(message='Accommodation not found'), 404

# Booking Management API

@app.route('/bookings', methods=['POST'])
def create_booking():
    data = request.json
    booking_id = data['booking_id']
    user_id = data['user_id']
    accommodation_id = data['accommodation_id']
    check_in = data['check_in']
    check_out = data['check_out']
    guests = data['guests']
    booking = Booking(booking_id, user_id, accommodation_id, check_in, check_out, guests)
    bookings[booking_id] = booking
    return jsonify(message='Booking created successfully'), 201

@app.route('/bookings/<booking_id>', methods=['GET'])
def get_booking(booking_id):
    booking = bookings.get(booking_id)
    if booking:
        return jsonify(booking.__dict__)
    return jsonify(message='Booking not found'), 404

@app.route('/bookings/<booking_id>', methods=['PATCH'])
def update_booking(booking_id):
    booking = bookings.get(booking_id)
    if booking:
        data = request.json
        booking.user_id = data.get('user_id', booking.user_id)
        booking.accommodation_id = data.get('accommodation_id', booking.accommodation_id)
        booking.check_in = data.get('check_in', booking.check_in)
        booking.check_out = data.get('check_out', booking.check_out)
        booking.guests = data.get('guests', booking.guests)
        return jsonify(message='Booking updated successfully')
    return jsonify(message='Booking not found'), 404

@app.route('/bookings/<booking_id>', methods=['DELETE'])
def delete_booking(booking_id):
    if booking_id in bookings:
        del bookings[booking_id]
        return jsonify(message='Booking deleted successfully')
    return jsonify(message='Booking not found'), 404

from flask import Flask, request, jsonify

app = Flask(__name__)

@app.route('/accommodations', methods=['GET'])
def search_accommodations():
    location = request.args.get('location')
    check_in = request.args.get('check_in')
    check_out = request.args.get('check_out')
    guests = request.args.get('guests')

    # Perform search and filtering based on the provided parameters
    
    # Example implementation (pseudo-code)
    accommodations = perform_search(location, check_in, check_out, guests)
    
    # Return a list of accommodations as JSON response
    return jsonify(accommodations)

@app.route('/bookings', methods=['POST'])
def create_booking():
    data = request.get_json()
    
    # Validate and process the booking data
    
    # Example implementation (pseudo-code)
    booking = process_booking(data)
    
    # Return the created booking as JSON response
    return jsonify(booking)

@app.route('/bookings/<booking_id>', methods=['GET'])
def get_booking(booking_id):
    # Retrieve the booking based on the provided booking_id
    
    # Example implementation (pseudo-code)
    booking = retrieve_booking(booking_id)
    
    if booking is None:
        return jsonify({'error': 'Booking not found'}), 404
    
    # Return the booking details as JSON response
    return jsonify(booking)

# Other API endpoints for user management, review submission, etc.

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

from flask import Flask, request, jsonify

app = Flask(__name__)

@app.route('/accommodations', methods=['GET'])
def search_accommodations():
    location = request.args.get('location')
    check_in = request.args.get('check_in')
    check_out = request.args.get('check_out')
    guests = request.args.get('guests')
    
    # Perform search and filtering based on the provided parameters
    
    # Example implementation (pseudo-code)
    accommodations = Accommodation.query.filter(
        Accommodation.location == location,
        Accommodation.available_between(check_in, check_out),
        Accommodation.max_guests >= guests
    ).all()
    
    # Return a list of accommodations as JSON response
    return jsonify(accommodations)

@app.route('/bookings', methods=['POST'])
def create_booking():
    data = request.get_json()
    
    # Validate and process the booking data
    
    # Example implementation (pseudo-code)
    user_id = data.get('user_id')
    accommodation_id = data.get('accommodation_id')
    check_in = data.get('check_in')
    check_out = data.get('check_out')
    guests = data.get('guests')
    
    # Perform necessary validations and create the booking
    booking = Booking(
        user_id=user_id,
        accommodation_id=accommodation_id,
        check_in=check_in,
        check_out=check_out,
        guests=guests
    )
    db.session.add(booking)
    db.session.commit()
    
    # Return the created booking as JSON response
    return jsonify(booking)

# Other API endpoint implementations

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

def search_accommodations(location, price_range, amenities, user_ratings):
    # Perform search and filtering logic
    # Example implementation (pseudo-code)
    results = []
    for accommodation in all_accommodations:
        if accommodation.location == location and \
                accommodation.price in price_range and \
                all(amenity in accommodation.amenities for amenity in amenities) and \
                accommodation.user_rating in user_ratings:
            results.append(accommodation)
    return results

def update_availability(accommodation_id, check_in, check_out):
    # Update availability for a specific accommodation
    # Example implementation (pseudo-code)
    accommodation = get_accommodation(accommodation_id)
    if accommodation is not None:
        if accommodation.is_available(check_in, check_out):
            accommodation.update_availability(check_in, check_out)
            return True
    return False

def get_reviews(accommodation_id):
    # Retrieve reviews for a specific accommodation
    # Example implementation (pseudo-code)
    reviews = []
    for review in all_reviews:
        if review.accommodation_id == accommodation_id:
            reviews.append(review)
    return reviews

def submit_review(accommodation_id, user_id, rating, comment):
    # Submit a review for a specific accommodation
    # Example implementation (pseudo-code)
    review = Review(accommodation_id, user_id, rating, comment)
    all_reviews.append(review)
    return review

def secure_booking(accommodation_id, user_id, check_in, check_out, payment_info):
    # Process a secure booking transaction
    # Example implementation (pseudo-code)
    accommodation = get_accommodation(accommodation_id)
    user = get_user(user_id)
    if accommodation is not None and user is not None:
        if accommodation.is_available(check_in, check_out):
            booking = create_booking(accommodation_id, user_id, check_in, check_out)
            payment_result = process_payment(payment_info)
            if payment_result == 'success':
                return booking
    return None

def set_language(user_id, language):
    # Set the language preference for a specific user
    # Example implementation (pseudo-code)
    user = get_user(user_id)
    if user is not None:
        user.language = language
        return True
    return False

def set_currency(user_id, currency):
    # Set the currency preference for a specific user
    # Example implementation (pseudo-code)
    user = get_user(user_id)
    if user is not None:
        user.currency = currency
        return True
    return False

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

class Ola {
    private Map<String, User> users;
    private List<Ride> rides;
    
    public Ola() {
        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 bookRide(String userId, String pickupLocation, String dropoffLocation) {
        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, pickupLocation, dropoffLocation);
        rides.add(ride);
        
        // Additional logic for assigning a driver, calculating fare, etc.
        // ...
    }
    
    // Additional methods for ride tracking, payment processing, rating, etc.
    // ...
}

public class Main {
    public static void main(String[] args) {
        Ola ola = new Ola();
        
        User user1 = new User("1", "Alice", "password");
        User user2 = new User("2", "Bob", "password");
        
        ola.addUser(user1);
        ola.addUser(user2);
        
        ola.bookRide("1", "Location A", "Location B");
    }
}

from flask import Flask, request, jsonify

app = Flask(__name__)

# User Registration API
@app.route('/users', methods=['POST'])
def register_user():
    # Extract user information from the request body
    user_data = request.json
    # Perform validation and store user data in the database
    # ...
    return jsonify({'message': 'User registered successfully'})

# Ride Booking API
@app.route('/rides', methods=['POST'])
def book_ride():
    # Extract ride details from the request body
    ride_data = request.json
    # Perform validations, assign a driver, and store ride data in the database
    # ...
    return jsonify({'message': 'Ride booked successfully'})

# Driver Management API
@app.route('/drivers/<driver_id>', methods=['GET'])
def get_driver(driver_id):
    # Retrieve driver information from the database based on driver_id
    # ...
    return jsonify(driver_info)

# Payment Processing API
@app.route('/payment', methods=['POST'])
def process_payment():
    # Extract payment details from the request body
    payment_data = request.json
    # Perform payment processing and update payment status in the database
    # ...
    return jsonify({'message': 'Payment processed successfully'})

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

from flask import Flask, request, jsonify

app = Flask(__name__)

# Ride Booking API
@app.route('/rides', methods=['POST'])
def book_ride():
    # Extract ride details from the request body
    ride_data = request.json
    # Perform validations, assign a driver, and store ride data in the database
    # ...
    return jsonify({'message': 'Ride booked successfully'})

# Ride Tracking API
@app.route('/rides/<ride_id>/track', methods=['GET'])
def track_ride(ride_id):
    # Retrieve ride information from the database based on ride_id
    # ...
    # Generate real-time tracking information
    tracking_info = generate_tracking_info(ride_id)
    return jsonify(tracking_info)

# Fare Estimation API
@app.route('/rides/estimate', methods=['POST'])
def estimate_fare():
    # Extract ride details from the request body
    ride_data = request.json
    # Perform validations and calculate estimated fare
    estimated_fare = calculate_fare(ride_data)
    return jsonify({'fare': estimated_fare})

# User Authentication API
@app.route('/auth/login', methods=['POST'])
def login():
    # Extract login credentials from the request body
    login_data = request.json
    # Validate credentials and generate authentication token
    auth_token = generate_auth_token(login_data)
    return jsonify({'token': auth_token})

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

from flask import Flask, request, jsonify

app = Flask(__name__)

rides = []

@app.route('/rides', methods=['POST'])
def book_ride():
    ride_data = request.json
    # Extract ride details from the request
    pickup_location = ride_data['pickup_location']
    dropoff_location = ride_data['dropoff_location']
    vehicle_type = ride_data['vehicle_type']
    # Estimate fare based on distance, time, and vehicle type
    estimated_fare = calculate_estimated_fare(pickup_location, dropoff_location, vehicle_type)
    # Create a new ride instance
    new_ride = {
        'pickup_location': pickup_location,
        'dropoff_location': dropoff_location,
        'vehicle_type': vehicle_type,
        'fare': estimated_fare
    }
    # Add the ride to the list of rides
    rides.append(new_ride)
    return jsonify({'message': 'Ride booked successfully'})

def calculate_estimated_fare(pickup_location, dropoff_location, vehicle_type):
    # Logic for calculating the estimated fare based on distance, time, and vehicle type
    # ...
    return estimated_fare

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

from flask import Flask, request, jsonify

app = Flask(__name__)

ride_data = {
    'ride_id': '',
    'driver_location': ''
}

@app.route('/rides/<ride_id>/track', methods=['GET'])
def track_ride(ride_id):
    if ride_id != ride_data['ride_id']:
        return jsonify({'message': 'Invalid ride ID'})
    return jsonify({'driver_location': ride_data['driver_location']})

def get_real_time_tracking_info(ride_id):
    # Logic for generating real-time tracking information for the ride
    # ...
    return tracking_info

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

from flask import Flask, request, jsonify

app = Flask(__name__)

@app.route('/rides/estimate', methods=['POST'])
def estimate_fare():
    ride_data = request.json
    # Extract ride details from the request
    pickup_location = ride_data['pickup_location']
    dropoff_location = ride_data['dropoff_location']
    vehicle_type = ride_data['vehicle_type']
    # Calculate the estimated fare based on distance, time, and vehicle type
    estimated_fare = calculate_estimated_fare(pickup_location, dropoff_location, vehicle_type)
    return jsonify({'fare': estimated_fare})

def calculate_estimated_fare(pickup_location, dropoff_location, vehicle_type):
    # Logic for calculating the estimated fare based on distance, time, and vehicle type
    # ...
    return estimated_fare

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

from flask import Flask, request, jsonify

app = Flask(__name__)

@app.route('/payment', methods=['POST'])
def process_payment():
    payment_data = request.json
    # Extract payment details from the request
    payment_method = payment_data['payment_method']
    amount = payment_data['amount']
    # Process the payment based on payment_method and amount
    payment_status = process_payment(payment_method, amount)
    return jsonify({'message': 'Payment processed successfully', 'status': payment_status})

def process_payment(payment_method, amount):
    # Logic for processing the payment based on payment_method and amount
    # ...
    return payment_status

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

from flask import Flask, request, jsonify

app = Flask(__name__)

ratings = []

@app.route('/rides/<ride_id>/rating', methods=['POST'])
def rate_ride(ride_id):
    rating_data = request.json
    # Extract rating and review from the request
    rating = rating_data['rating']
    review = rating_data['review']
    # Save the rating and review for the ride_id
    save_rating(ride_id, rating, review)
    return jsonify({'message': 'Rating and review saved successfully'})

def save_rating(ride_id, rating, review):
    # Logic for saving the rating and review for the ride_id
    # ...
    ratings.append({'ride_id': ride_id, 'rating': rating, 'review': review})

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

from flask import Flask, request

app = Flask(__name__)

users = {
    "1": {
        "username": "Alice",
        "password": "password",
    },
    "2": {
        "username": "Bob",
        "password": "password",
    },
}

@app.route('/users', methods=['POST'])
def create_user():
    user_data = request.json
    user_id = str(len(users) + 1)
    users[user_id] = {
        "username": user_data['username'],
        "password": user_data['password'],
    }
    return {"message": "User created successfully", "user_id": user_id}, 201

@app.route('/users/<user_id>', methods=['GET'])
def get_user(user_id):
    if user_id in users:
        return users[user_id], 200
    else:
        return {"message": "User not found"}, 404

@app.route('/rides', methods=['POST'])
def book_ride():
    ride_data = request.json
    user_id = ride_data['user_id']
    pickup_location = ride_data['pickup_location']
    dropoff_location = ride_data['dropoff_location']
    # Logic for booking the ride
    # ...
    return {"message": "Ride booked successfully"}, 200

# Additional API endpoints for ride tracking, payment processing, rating, etc.
# ...

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

class GrouponSystem:
    def __init__(self):
        self.total_users = 50000000
        self.daily_active_users = 10000000
        self.deals_viewed_by_user = 5
        self.total_deals_viewed_per_day = 50000000
        self.read_to_write_ratio = 50
        self.total_deals_created_per_day = 1000000
        self.deal_size_kb = 10
        self.storage_per_day_gb = self.total_deals_created_per_day * self.deal_size_kb / 1024
        self.storage_next_3_years_tb = self.storage_per_day_gb * 5 * 365
        self.requests_per_second = self.total_deals_viewed_per_day / 86400

    def simulate(self):
        print("Simulation Results for Groupon:")
        print("Total Number of Users:", self.total_users)
        print("Daily Active Users (DAU):", self.daily_active_users)
        print("Number of Deals Viewed by User/Day:", self.deals_viewed_by_user)
        print("Total Number of Deals Viewed/Day:", self.total_deals_viewed_per_day)
        print("Read-to-Write Ratio:", self.read_to_write_ratio)
        print("Total Number of Deals Created/Day:", self.total_deals_created_per_day)
        print("Deal Size (KB):", self.deal_size_kb)
        print("Storage per Day (GB):", self.storage_per_day_gb)
        print("Storage for Next 3 Years (TB):", self.storage_next_3_years_tb)
        print("Requests per Second:", self.requests_per_second)

if __name__ == '__main__':
    groupon_system = GrouponSystem()
    groupon_system.simulate()

Users:

User_ID (Primary Key)
Username
Email
Password
Profile Info (e.g., Name, Address, Contact details, etc.)
Deals:

Deal_ID (Primary Key)
Title
Description
Discount
Expiry Date
Deal Image URL
Merchant_ID (Foreign Key)
Merchants:

Merchant_ID (Primary Key)
Merchant Name
Merchant Address
Contact Details
User_Deal_Likes:

Like_ID (Primary Key)
User_ID (Foreign Key)
Deal_ID (Foreign Key)
Timestamp
User_Deal_Comments:

Comment_ID (Primary Key)
User_ID (Foreign Key)
Deal_ID (Foreign Key)
Comment_Text
Timestamp
User_Follows:

Follow_ID (Primary Key)
Follower_User_ID (Foreign Key)
Followee_User_ID (Foreign Key)
Timestamp

import requests
import json

# Define the Groupon API endpoint
base_url = 'https://api.groupon.com/v1/'
# Define the access token for the API
access_token = '<YOUR_ACCESS_TOKEN_HERE>'

# Service to get personalized feed for a user
def get_personalized_feed(user_id):
    feed_endpoint = f'{base_url}feed?user_id={user_id}&access_token={access_token}'
    response = requests.get(feed_endpoint)
    data = json.loads(response.text)
    return data['feed']

# Service to like a deal
def like_deal(user_id, deal_id):
    like_endpoint = f'{base_url}deals/{deal_id}/like?user_id={user_id}&access_token={access_token}'
    response = requests.post(like_endpoint)
    if response.status_code == 200:
        return 'Deal liked successfully!'
    else:
        return 'Unable to like the deal.'

# Service to follow a user
def follow_user(follower_user_id, followee_user_id):
    follow_endpoint = f'{base_url}users/{followee_user_id}/follow?user_id={follower_user_id}&access_token={access_token}'
    response = requests.post(follow_endpoint)
    if response.status_code == 200:
        return 'User followed successfully!'
    else:
        return 'Unable to follow the user.'

# Service to comment on a deal
def comment_on_deal(user_id, deal_id, comment_text):
    comment_endpoint = f'{base_url}deals/{deal_id}/comment?user_id={user_id}&comment_text={comment_text}&access_token={access_token}'
    response = requests.post(comment_endpoint)
    if response.status_code == 200:
        return 'Comment added successfully!'
    else:
        return 'Unable to add the comment.'

# Example usage
if __name__ == '__main__':
    user_id = 12345  # Replace with the actual user ID
    deal_id = 67890  # Replace with the actual deal ID

    personalized_feed = get_personalized_feed(user_id)
    print('Personalized Feed:', personalized_feed)

    like_response = like_deal(user_id, deal_id)
    print(like_response)

    follower_user_id = 12345  # Replace with the actual follower user ID
    followee_user_id = 67890  # Replace with the actual followee user ID
    follow_response = follow_user(follower_user_id, followee_user_id)
    print(follow_response)

    comment_text = 'Great deal!'
    comment_response = comment_on_deal(user_id, deal_id, comment_text)
    print(comment_response)

from flask import Flask, request, jsonify
import jwt

app = Flask(__name__)
app.config['SECRET_KEY'] = 'your_secret_key'  # Replace with a strong secret key

# Sample users and deals data (replace with actual database access)
users = {
    '[email protected]': 'user1password',
    '[email protected]': 'user2password'
}

deals = [
    {'id': 1, 'title': '50% Off Spa Treatment', 'discount': 50, 'expiry': '2023-12-31'},
    {'id': 2, 'title': '20% Off Local Restaurants', 'discount': 20, 'expiry': '2023-12-31'}
    # Add more deals as per the database records
]

@app.route('/api/authenticate', methods=['POST'])
def authenticate_user():
    email = request.json.get('email')
    password = request.json.get('password')

    if email in users and users[email] == password:
        token = jwt.encode({'email': email}, app.config['SECRET_KEY'], algorithm='HS256')
        return jsonify({'token': token})
    else:
        return jsonify({'message': 'Authentication failed'}), 401

@app.route('/api/deals', methods=['GET'])
def get_deals():
    return jsonify(deals)

@app.route('/api/deals/<int:deal_id>', methods=['GET'])
def get_deal(deal_id):
    deal = next((deal for deal in deals if deal['id'] == deal_id), None)
    if deal:
        return jsonify(deal)
    else:
        return jsonify({'message': 'Deal not found'}), 404

@app.route('/api/pay', methods=['POST'])
def process_payment():
    token = request.json.get('token')
    deal_id = request.json.get('deal_id')

    try:
        payload = jwt.decode(token, app.config['SECRET_KEY'], algorithms=['HS256'])
    except jwt.ExpiredSignatureError:
        return jsonify({'message': 'Token has expired'}), 401
    except jwt.InvalidTokenError:
        return jsonify({'message': 'Invalid token'}), 401

    deal = next((deal for deal in deals if deal['id'] == deal_id), None)
    if not deal:
        return jsonify({'message': 'Deal not found'}), 404

    if deal['expiry'] < '2023-07-20':
        return jsonify({'message': 'Deal has expired'}), 403

    # Process payment logic here
    # ...

    return jsonify({'message': 'Payment successful'})

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

from flask import Flask, request

app = Flask(__name__)

users = {}
deals = {}
merchants = {}
transactions = {}
categories = {}

# User API

@app.route('/users', methods=['POST'])
def create_user():
    data = request.json
    user_id = len(users) + 1
    user = User(user_id, data['username'], data['password'])
    users[user_id] = user
    return {"message": "User created successfully", "user_id": user_id}, 201

@app.route('/users/<int:user_id>', methods=['GET'])
def get_user(user_id):
    if user_id in users:
        user = users[user_id]
        return {"user_id": user.user_id, "username": user.username}, 200
    else:
        return {"message": "User not found"}, 404

# Deal API

@app.route('/deals', methods=['POST'])
def create_deal():
    data = request.json
    deal_id = len(deals) + 1
    deal = Deal(deal_id, data['title'], data['description'], data['merchant_id'], data['price'],
                data['discount_percentage'], data['deal_image_url'], data['expiry_date'], data['category'])
    deals[deal_id] = deal
    return {"message": "Deal created successfully", "deal_id": deal_id}, 201

@app.route('/deals/<int:deal_id>', methods=['GET'])
def get_deal(deal_id):
    if deal_id in deals:
        deal = deals[deal_id]
        return {"deal_id": deal.deal_id, "title": deal.title, "description": deal.description}, 200
    else:
        return {"message": "Deal not found"}, 404

# Merchant API

@app.route('/merchants', methods=['POST'])
def create_merchant():
    data = request.json
    merchant_id = len(merchants) + 1
    merchant = Merchant(merchant_id, data['merchant_name'], data['address'], data['contact_details'])
    merchants[merchant_id] = merchant
    return {"message": "Merchant created successfully", "merchant_id": merchant_id}, 201

@app.route('/merchants/<int:merchant_id>', methods=['GET'])
def get_merchant(merchant_id):
    if merchant_id in merchants:
        merchant = merchants[merchant_id]
        return {"merchant_id": merchant.merchant_id, "merchant_name": merchant.merchant_name}, 200
    else:
        return {"message": "Merchant not found"}, 404

# Transaction API

@app.route('/transactions', methods=['POST'])
def create_transaction():
    data = request.json
    transaction_id = len(transactions) + 1
    transaction = Transaction(transaction_id, data['user_id'], data['deal_id'], data['timestamp'])
    transactions[transaction_id] = transaction
    return {"message": "Transaction created successfully", "transaction_id": transaction_id}, 201

@app.route('/transactions/<int:transaction_id>', methods=['GET'])
def get_transaction(transaction_id):
    if transaction_id in transactions:
        transaction = transactions[transaction_id]
        return {"transaction_id": transaction.transaction_id, "user_id": transaction.user_id,
                "deal_id": transaction.deal_id, "timestamp": transaction.timestamp}, 200
    else:
        return {"message": "Transaction not found"}, 404

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

User API:
Endpoint: /users

Method: POST

Description: Create a new user account.

Request Body: JSON object containing user details (username, email, password).

Response: 201 Created if successful, along with the newly created user ID.

Endpoint: /users/{user_id}

Method: GET

Description: Get user details by user ID.

Response: User details in JSON format.

Endpoint: /users/{user_id}/deals/liked

Method: GET

Description: Get the list of deals liked by a user.

Response: List of deal details in JSON format.


Deal API:
Endpoint: /deals

Method: POST

Description: Create a new deal.

Request Body: JSON object containing deal details (title, description, merchant ID, price, discount percentage, deal image URL, expiry date, deal category).

Response: 201 Created if successful, along with the newly created deal ID.

Endpoint: /deals/{deal_id}

Method: GET

Description: Get deal details by deal ID.

Response: Deal details in JSON format.

Endpoint: /deals

Method: GET

Description: Get a list of all deals.

Response: List of deal details in JSON format.

Endpoint: /deals/categories

Method: GET

Description: Get a list of all deal categories.

Response: List of category details in JSON format.


Merchant API:
Endpoint: /merchants

Method: POST

Description: Create a new merchant account.

Request Body: JSON object containing merchant details (merchant name, address, contact details).

Response: 201 Created if successful, along with the newly created merchant ID.

Endpoint: /merchants/{merchant_id}

Method: GET

Description: Get merchant details by merchant ID.

Response: Merchant details in JSON format.

Endpoint: /merchants/{merchant_id}/deals

Method: GET

Description: Get a list of deals offered by a merchant.

Response: List of deal details in JSON format.


Transaction API:
Endpoint: /transactions

Method: POST

Description: Make a new transaction for a deal purchase.

Request Body: JSON object containing transaction details (user ID, deal ID).

Response: 201 Created if successful, along with the newly created transaction ID.

Endpoint: /transactions/{transaction_id}

Method: GET

Description: Get transaction details by transaction ID.

Response: Transaction details in JSON format.


Location API:
Endpoint: /locations

Method: POST

Description: Add a new location.

Request Body: JSON object containing location details (latitude, longitude).

Response: 201 Created if successful, along with the newly created location ID.

Endpoint: /locations/{location_id}

Method: GET

Description: Get location details by location ID.

Response: Location details in JSON format.

def explore_deals(location=None, preferences=None):
    # Fetch deals from the database based on the location or preferences
    # Return the list of deals that match the user's criteria
    # In this example, we're returning sample deals
    deals = [
        {'id': 1, 'title': '50% Off Spa Treatment', 'discount': 50, 'expiry': '2023-12-31'},
        {'id': 2, 'title': '20% Off Local Restaurants', 'discount': 20, 'expiry': '2023-12-31'}
    ]
    return deals

def purchase_deal(user_id, deal_id):
    # Check if the deal is available and not expired
    # Deduct the deal amount from the user's account or payment gateway
    # Record the purchase in the database
    # In this example, we're assuming successful purchase and returning a success message
    return f'Deal {deal_id} purchased successfully for user {user_id}.'

import datetime

def get_time_remaining(deal_expiry):
    # Calculate the time remaining for the deal expiry
    # Return the time remaining in a suitable format (e.g., hours, minutes)
    expiry_time = datetime.datetime.strptime(deal_expiry, '%Y-%m-%d')
    remaining_time = expiry_time - datetime.datetime.now()
    return str(remaining_time)

def refer_friend(user_id, friend_email):
    # Validate the friend's email and check if they are a new user
    # Reward the user with referral rewards if the friend becomes a new user
    # Record the referral in the database
    # In this example, we're assuming successful referral and returning a success message
    return f'User {friend_email} referred by user {user_id}.'

def merchant_portal(merchant_id):
    # Fetch all deals associated with the merchant from the database
    # Provide various options for the merchant to manage their deals and track performance
    # In this example, we're returning sample deals for the merchant
    merchant_deals = [
        {'id': 1, 'title': '50% Off Spa Treatment', 'discount': 50, 'expiry': '2023-12-31'},
        {'id': 2, 'title': '20% Off Local Restaurants', 'discount': 20, 'expiry': '2023-12-31'}
    ]
    return merchant_deals

def share_deal(deal_id, social_media_platform):
    # Fetch the deal information from the database
    # Generate the shareable link or message for the given social media platform
    # Implement the functionality to share the deal
    # In this example, we're returning a success message for sharing
    return f'Deal {deal_id} shared on {social_media_platform}.'

def personalize_deals(user_id):
    # Analyze user behavior and interests based on previous purchases or preferences
    # Fetch deals from the database that match the user's interests
    # Sort and recommend personalized deals to the user
    # In this example, we're returning sample personalized deals
    personalized_deals = [
        {'id': 1, 'title': '50% Off Spa Treatment (Personalized)', 'discount': 50, 'expiry': '2023-12-31'},
        {'id': 3, 'title': '30% Off Fitness Classes (Personalized)', 'discount': 30, 'expiry': '2023-12-31'}
    ]
    return personalized_deals

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

class Deal:
    def __init__(self, deal_id, title, description, merchant_id, price, discount_percentage, deal_image_url, expiry_date, category):
        self.deal_id = deal_id
        self.title = title
        self.description = description
        self.merchant_id = merchant_id
        self.price = price
        self.discount_percentage = discount_percentage
        self.deal_image_url = deal_image_url
        self.expiry_date = expiry_date
        self.category = category

class Merchant:
    def __init__(self, merchant_id, merchant_name, address, contact_details):
        self.merchant_id = merchant_id
        self.merchant_name = merchant_name
        self.address = address
        self.contact_details = contact_details
        self.active_deals = []

class Transaction:
    def __init__(self, transaction_id, user_id, deal_id, timestamp):
        self.transaction_id = transaction_id
        self.user_id = user_id
        self.deal_id = deal_id
        self.timestamp = timestamp

class Category:
    def __init__(self, category_id, category_name):
        self.category_id = category_id
        self.category_name = category_name

Users:

UserID (Primary Key)
Username
Email
Password
RegistrationDate
Competitions:

CompetitionID (Primary Key)
Title
Description
StartDate
EndDate
Organizer (Foreign Key referencing Users.UserID)
Submissions:

SubmissionID (Primary Key)
CompetitionID (Foreign Key referencing Competitions.CompetitionID)
UserID (Foreign Key referencing Users.UserID)
SubmissionFile
SubmissionTimestamp
Likes:

LikeID (Primary Key)
UserID (Foreign Key referencing Users.UserID)
CompetitionID (Foreign Key referencing Competitions.CompetitionID)
SubmissionID (Foreign Key referencing Submissions.SubmissionID)
Comments:

CommentID (Primary Key)
UserID (Foreign Key referencing Users.UserID)
CompetitionID (Foreign Key referencing Competitions.CompetitionID)
SubmissionID (Foreign Key referencing Submissions.SubmissionID)
CaptionText
CommentTimestamp

from flask import Flask, request, jsonify

app = Flask(__name__)

# Placeholder for storing user data (in production, use a database)
users = {}
user_id_counter = 1

# Placeholder for storing competition data (in production, use a database)
competitions = {}
competition_id_counter = 1

# Placeholder for storing submission data (in production, use a database)
submissions = {}
submission_id_counter = 1

# Placeholder for storing like data (in production, use a database)
likes = {}
like_id_counter = 1

# Placeholder for storing comment data (in production, use a database)
comments = {}
comment_id_counter = 1

# API endpoints for user management
@app.route('/api/register', methods=['POST'])
def register_user():
    global user_id_counter
    data = request.get_json()
    username = data['username']
    email = data['email']
    password = data['password']

    user = {
        'UserID': user_id_counter,
        'Username': username,
        'Email': email,
        'Password': password,
        'RegistrationDate': str(datetime.now())
    }

    users[user_id_counter] = user
    user_id_counter += 1

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

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

    for user_id, user in users.items():
        if user['Username'] == username and user['Password'] == password:
            return jsonify({'message': 'Login successful'}), 200

    return jsonify({'error': 'Invalid username or password'}), 401

@app.route('/api/profile', methods=['GET', 'PUT'])
def user_profile():
    user_id = int(request.args.get('user_id'))

    if user_id not in users:
        return jsonify({'error': 'User not found'}), 404

    if request.method == 'GET':
        return jsonify(users[user_id])

    # For PUT request, update user profile
    data = request.get_json()
    users[user_id]['email'] = data['email']
    return jsonify({'message': 'Profile updated successfully'}), 200

# API endpoints for competitions
@app.route('/api/competitions', methods=['GET'])
def get_all_competitions():
    return jsonify(list(competitions.values()))

@app.route('/api/competitions/<int:competition_id>', methods=['GET'])
def get_competition(competition_id):
    competition = competitions.get(competition_id)
    if not competition:
        return jsonify({'error': 'Competition not found'}), 404
    return jsonify(competition)

@app.route('/api/competitions/<int:competition_id>/submissions', methods=['GET'])
def get_competition_submissions(competition_id):
    # In a real system, you would fetch submissions associated with the competition from the database.
    competition_submissions = [submission for submission in submissions.values() if submission['competition_id'] == competition_id]
    return jsonify(competition_submissions)

# API endpoints for submissions
@app.route('/api/submissions', methods=['POST'])
def submit_prediction():
    global submission_id_counter
    data = request.get_json()
    competition_id = data['competition_id']
    user_id = data['user_id']
    submission_file = data['submission_file']

    submission = {
        'SubmissionID': submission_id_counter,
        'CompetitionID': competition_id,
        'UserID': user_id,
        'SubmissionFile': submission_file,
        'SubmissionTimestamp': str(datetime.now())
    }

    submissions[submission_id_counter] = submission
    submission_id_counter += 1

    return jsonify({'message': 'Submission successful'}), 200

# API endpoints for likes
@app.route('/api/likes', methods=['POST'])
def like_item():
    global like_id_counter
    data = request.get_json()
    user_id = data['user_id']
    competition_id = data.get('competition_id')
    submission_id = data.get('submission_id')

    like = {
        'LikeID': like_id_counter,
        'UserID': user_id,
        'CompetitionID': competition_id,
        'SubmissionID': submission_id,
        'Timestamp': str(datetime.now())
    }

    likes[like_id_counter] = like
    like_id_counter += 1

    return jsonify({'message': 'Liked successfully'}), 200

# API endpoints for follows
@app.route('/api/follows', methods=['POST'])
def follow_user():
    data = request.get_json()
    user_id1 = data['user_id1']
    user_id2 = data['user_id2']

    follow = {
        'User_id1': user_id1,
        'User_id2': user_id2
    }

    # In a real system, you would perform proper checks for user existence and prevent duplicate follows.

    return jsonify({'message': 'User followed successfully'}), 200

# API endpoints for comments
@app.route('/api/comments', methods=['POST'])
def post_comment():
    global comment_id_counter
    data = request.get_json()
    user_id = data['user_id']
    competition_id = data.get('competition_id')
    submission_id = data.get('submission_id')
    caption_text = data['caption_text']

    comment = {
        'CommentID': comment_id_counter,
        'UserID': user_id,
        'CompetitionID': competition_id,
        'SubmissionID': submission_id,
        'CaptionText': caption_text,
        'Timestamp': str(datetime.now())
    }

    comments[comment_id_counter] = comment
    comment_id_counter += 1

    return jsonify({'message': 'Comment posted successfully'}), 200

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

from flask import Flask, request, jsonify

app = Flask(__name__)

# Placeholder for storing user data (in production, use a database)
users = {}

# Placeholder for storing competition data (in production, use a database)
competitions = {}

# Placeholder for storing dataset data (in production, use a database)
datasets = {}

# API endpoints for user management
@app.route('/api/register', methods=['POST'])
def register_user():
    data = request.get_json()
    username = data['username']
    password = data['password']
    email = data['email']

    if username in users:
        return jsonify({'error': 'Username already exists'}), 400

    user_data = {'username': username, 'password': password, 'email': email}
    users[username] = user_data
    return jsonify({'message': 'User registered successfully'}), 201

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

    if username not in users or users[username]['password'] != password:
        return jsonify({'error': 'Invalid username or password'}), 401

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

@app.route('/api/profile', methods=['GET', 'PUT'])
def user_profile():
    username = request.args.get('username')

    if username not in users:
        return jsonify({'error': 'User not found'}), 404

    if request.method == 'GET':
        return jsonify(users[username])

    # For PUT request, update user profile
    data = request.get_json()
    users[username]['email'] = data['email']
    return jsonify({'message': 'Profile updated successfully'}), 200

# API endpoints for competitions
@app.route('/api/competitions', methods=['GET'])
def get_all_competitions():
    return jsonify(list(competitions.values()))

@app.route('/api/competitions/<int:competition_id>', methods=['GET'])
def get_competition(competition_id):
    competition = competitions.get(competition_id)
    if not competition:
        return jsonify({'error': 'Competition not found'}), 404
    return jsonify(competition)

# Other competition-related endpoints can be similarly implemented

# API endpoints for datasets
@app.route('/api/datasets', methods=['GET'])
def get_all_datasets():
    return jsonify(list(datasets.values()))

@app.route('/api/datasets/<int:dataset_id>', methods=['GET'])
def get_dataset(dataset_id):
    dataset = datasets.get(dataset_id)
    if not dataset:
        return jsonify({'error': 'Dataset not found'}), 404
    return jsonify(dataset)

# Other dataset-related endpoints can be similarly implemented

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

User Management:

POST /api/register: Create a new user account.
POST /api/login: Authenticate and log in a user.
GET /api/profile: Fetch the user's profile information.
PUT /api/profile: Update the user's profile information.

Competitions:

GET /api/competitions: Fetch a list of all available competitions.
GET /api/competitions/{competition_id}: Fetch details of a specific competition.
GET /api/competitions/{competition_id}/datasets: Fetch datasets associated with a competition.
GET /api/competitions/{competition_id}/leaderboard: Fetch the competition leaderboard.
Submissions:

POST /api/competitions/{competition_id}/submit: Submit a prediction for a competition.
GET /api/competitions/{competition_id}/submissions: Fetch the user's submissions for a competition.

Datasets:

GET /api/datasets: Fetch a list of all available datasets.
GET /api/datasets/{dataset_id}: Fetch details of a specific dataset.
GET /api/datasets/{dataset_id}/data: Download the dataset.

Forums:

GET /api/forums: Fetch a list of all available forum threads.
GET /api/forums/{thread_id}: Fetch details of a specific forum thread.
POST /api/forums/{thread_id}/comment: Post a comment in a forum thread.

from flask import Flask, request, jsonify

app = Flask(__name__)

# Sample data to be stored in the server
users = {
    "user1": {
        "name": "John Doe",
        "followers": ["user2", "user3"],
        "following": ["user2", "user3"],
        "posts": [
            {
                "id": 1,
                "caption": "This is my first post!",
                "image_url": "https://example.com/images/post1.jpg",
                "timestamp": "2022-02-18 14:30:00"
            },
            {
                "id": 2,
                "caption": "Another post!",
                "image_url": "https://example.com/images/post2.jpg",
                "timestamp": "2022-02-18 14:35:00"
            }
        ]
    },
    "user2": {
        "name": "Jane Doe",
        "followers": ["user1"],
        "following": ["user1"],
        "posts": [
            {
                "id": 3,
                "caption": "Hello world!",
                "image_url": "https://example.com/images/post3.jpg",
                "timestamp": "2022-02-18 14:40:00"
            }
        ]
    },
    "user3": {
        "name": "Bob Smith",
        "followers": ["user1"],
        "following": ["user1"],
        "posts": []
    }
}

@app.route('/users/<username>', methods=['GET'])
def get_user(username):
    if username in users:
        return jsonify(users[username]), 200
    else:
        return "User not found", 404

@app.route('/users/<follower>/follow/<following>', methods=['POST'])
def follow_user(follower, following):
    if follower in users and following in users:
        if following not in users[follower]['following']:
            users[follower]['following'].append(following)
            users[following]['followers'].append(follower)
        return "User followed", 200
    else:
        return "User not found", 404

@app.route('/users/<follower>/unfollow/<following>', methods=['POST'])
def unfollow_user(follower, following):
    if follower in users and following in users:
        if following in users[follower]['following']:
            users[follower]['following'].remove(following)
            users[following]['followers'].remove(follower)
        return "User unfollowed", 200
    else:
        return "User not found", 404

@app.route('/users/<username>/posts', methods=['POST'])
def create_post(username):
    if username in users:
        data = request.get_json()
        caption = data.get('caption')
        image_url = data.get('image_url')
        timestamp = data.get('timestamp')
        post_id = len(users[username]['posts']) + 1
        post = {"id": post_id, "caption": caption, "image_url": image_url, "timestamp": timestamp}
        users[username]['posts'].append(post)
        return "Post created", 200
    else:
        return "User not found", 404

@app.route('/users/<username>/feed', methods=['GET'])
def get_feed(username):
    if username in users:
        feed = []
        for user in users[username]['following']:
            feed.extend(users[user]['posts'])
        sorted_feed = sorted(feed, key=lambda post: post['timestamp'], reverse=True)
        return jsonify({"feed": sorted_feed}), 200
    else:
        return "User not found", 404

from flask import Flask, request, jsonify

app = Flask(__name__)

# Placeholder for storing competition data (in production, use a database)
competitions = {}

# Placeholder for storing dataset data (in production, use a database)
datasets = {}

# Placeholder for storing kernels data (in production, use a database)
kernels = {}

# Placeholder for storing discussion forum data (in production, use a database)
discussion_forums = {}

# Placeholder for storing user data (in production, use a database)
users = {}

# Placeholder for storing cloud environment data (in production, use a database)
cloud_environments = {}

# API endpoints for Competitions
@app.route('/api/competitions', methods=['GET'])
def get_all_competitions():
    return jsonify(list(competitions.values()))

@app.route('/api/competitions/<int:competition_id>', methods=['GET'])
def get_competition(competition_id):
    competition = competitions.get(competition_id)
    if not competition:
        return jsonify({'error': 'Competition not found'}), 404
    return jsonify(competition)

# API endpoints for Datasets
@app.route('/api/datasets', methods=['GET'])
def get_all_datasets():
    return jsonify(list(datasets.values()))

@app.route('/api/datasets/<int:dataset_id>', methods=['GET'])
def get_dataset(dataset_id):
    dataset = datasets.get(dataset_id)
    if not dataset:
        return jsonify({'error': 'Dataset not found'}), 404
    return jsonify(dataset)

# API endpoints for Kernels
@app.route('/api/kernels', methods=['GET'])
def get_all_kernels():
    return jsonify(list(kernels.values()))

@app.route('/api/kernels/<int:kernel_id>', methods=['GET'])
def get_kernel(kernel_id):
    kernel = kernels.get(kernel_id)
    if not kernel:
        return jsonify({'error': 'Kernel not found'}), 404
    return jsonify(kernel)

# API endpoints for Discussion Forums
@app.route('/api/forums', methods=['GET'])
def get_all_discussion_forums():
    return jsonify(list(discussion_forums.values()))

@app.route('/api/forums/<int:forum_id>', methods=['GET'])
def get_discussion_forum(forum_id):
    forum = discussion_forums.get(forum_id)
    if not forum:
        return jsonify({'error': 'Discussion forum not found'}), 404
    return jsonify(forum)

# API endpoints for Data Cleaning and Visualization Tools
@app.route('/api/tools', methods=['GET'])
def get_data_tools():
    data_tools = ['Data Cleaning', 'Data Visualization']
    return jsonify(data_tools)

# API endpoints for Cloud Environment
@app.route('/api/cloud', methods=['GET'])
def get_cloud_environment():
    return jsonify(cloud_environments)

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

from flask import Flask, request, jsonify

app = Flask(__name__)

# Simulated Scalability Requirements for Coupang
total_users = 1200000000
daily_active_users = 300000000
orders_per_user_per_day = 2
total_orders_per_day = daily_active_users * orders_per_user_per_day
read_to_write_ratio = 100
total_products_listed_per_day = total_orders_per_day // read_to_write_ratio
avg_product_data_size_kb = 1  # 1KB (for simplicity)
total_storage_per_day_gb = total_products_listed_per_day * avg_product_data_size_kb / 1024
total_storage_for_3_years_tb = total_storage_per_day_gb * 365 * 5
requests_per_second = total_orders_per_day / (24 * 3600)

# Endpoints for simulated scalability requirements

@app.route('/api/users')
def get_total_users():
    return jsonify({"total_users": total_users}), 200

@app.route('/api/dau')
def get_daily_active_users():
    return jsonify({"daily_active_users": daily_active_users}), 200

@app.route('/api/orders')
def get_total_orders():
    return jsonify({"total_orders_per_day": total_orders_per_day}), 200

@app.route('/api/products')
def get_total_products_listed():
    return jsonify({"total_products_listed_per_day": total_products_listed_per_day}), 200

@app.route('/api/storage')
def get_total_storage():
    return jsonify({"total_storage_per_day_gb": total_storage_per_day_gb, "total_storage_for_3_years_tb": total_storage_for_3_years_tb}), 200

@app.route('/api/requests')
def get_requests_per_second():
    return jsonify({"requests_per_second": requests_per_second}), 200

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

User Class:

Fields:
userId: String (Unique identifier for each user)
username: String (User's username)
password: String (User's password)
email: String (User's email address)
other user attributes (e.g., name, address, etc.)

Product Class:

Fields:
productId: String (Unique identifier for each product)
name: String (Product name)
description: String (Product description)
price: Float (Product price)
stock: Integer (Available stock quantity)
other product attributes

Order Class:

Fields:
orderId: String (Unique identifier for each order)
user: User (Reference to the user who placed the order)
items: List (List of ordered items)
orderDate: DateTime (Date and time when the order was placed)
status: String (Order status - e.g., "Processing", "Shipped", "Delivered")

OrderItem Class:

Fields:
orderItemId: String (Unique identifier for each order item)
product: Product (Reference to the product in the order item)
quantity: Integer (Quantity of the product in the order item)

from flask import Flask, request, jsonify

app = Flask(__name__)

# Mock databases (For simplicity, we'll use Python dictionaries as databases)
users_db = {}
products_db = {}
orders_db = {}
order_items_db = {}
like_db = {}
comment_db = {}

# Service: User Service

@app.route('/api/users', methods=['POST'])
def create_user():
    data = request.get_json()
    user_id = len(users_db) + 1
    username = data.get('username')
    email = data.get('email')
    password = data.get('password')
    users_db[user_id] = {"username": username, "email": email, "password": password}
    return jsonify({"user_id": user_id, "message": "User created successfully"}), 201

@app.route('/api/users/<int:user_id>', methods=['GET'])
def get_user(user_id):
    user = users_db.get(user_id)
    if user:
        return jsonify(user), 200
    else:
        return jsonify({"message": "User not found"}), 404

# Service: Product Service

@app.route('/api/products', methods=['POST'])
def create_product():
    data = request.get_json()
    product_id = len(products_db) + 1
    name = data.get('name')
    description = data.get('description')
    price = data.get('price')
    stock = data.get('stock')
    products_db[product_id] = {"name": name, "description": description, "price": price, "stock": stock}
    return jsonify({"product_id": product_id, "message": "Product created successfully"}), 201

@app.route('/api/products/<int:product_id>', methods=['GET'])
def get_product(product_id):
    product = products_db.get(product_id)
    if product:
        return jsonify(product), 200
    else:
        return jsonify({"message": "Product not found"}), 404

# Service: Order Service

@app.route('/api/orders', methods=['POST'])
def create_order():
    data = request.get_json()
    user_id = data.get('user_id')
    order_id = len(orders_db) + 1
    order_date = data.get('order_date')
    status = "Processing"  # Assuming initial status is Processing
    orders_db[order_id] = {"user_id": user_id, "order_date": order_date, "status": status}
    
    # Create order items
    order_items = data.get('order_items')
    for item in order_items:
        product_id = item['product_id']
        quantity = item['quantity']
        order_items_db[order_id] = {"product_id": product_id, "quantity": quantity}
    
    return jsonify({"order_id": order_id, "message": "Order created successfully"}), 201

@app.route('/api/orders/<int:order_id>', methods=['GET'])
def get_order(order_id):
    order = orders_db.get(order_id)
    if order:
        return jsonify(order), 200
    else:
        return jsonify({"message": "Order not found"}), 404

# Service: Like Service

@app.route('/api/likes', methods=['POST'])
def create_like():
    data = request.get_json()
    like_id = len(like_db) + 1
    user_id = data.get('user_id')
    post_id = data.get('post_id')
    timestamp = data.get('timestamp')
    like_db[like_id] = {"user_id": user_id, "post_id": post_id, "timestamp": timestamp}
    return jsonify({"like_id": like_id, "message": "Like created successfully"}), 201

@app.route('/api/likes/<int:like_id>', methods=['GET'])
def get_like(like_id):
    like = like_db.get(like_id)
    if like:
        return jsonify(like), 200
    else:
        return jsonify({"message": "Like not found"}), 404

# Service: Comment Service

@app.route('/api/comments', methods=['POST'])
def create_comment():
    data = request.get_json()
    comment_id = len(comment_db) + 1
    user_id = data.get('user_id')
    post_id = data.get('post_id')
    caption_text = data.get('caption_text')
    timestamp = data.get('timestamp')
    comment_db[comment_id] = {"user_id": user_id, "post_id": post_id, "caption_text": caption_text, "timestamp": timestamp}
    return jsonify({"comment_id": comment_id, "message": "Comment created successfully"}), 201

@app.route('/api/comments/<int:comment_id>', methods=['GET'])
def get_comment(comment_id):
    comment = comment_db.get(comment_id)
    if comment:
        return jsonify(comment), 200
    else:
        return jsonify({"message": "Comment not found"}), 404

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

from flask import Flask, request, jsonify

app = Flask(__name__)

# Mock database for users, products, and orders
users_db = {}
products_db = {
    456: {"name": "Laptop", "price": 1200, "availability": True},
    789: {"name": "Gaming Laptop", "price": 1500, "availability": False}
}
orders_db = {}
order_id_counter = 1

# User Registration API
@app.route('/api/users/register', methods=['POST'])
def register_user():
    data = request.get_json()
    username = data.get('username')
    email = data.get('email')
    password = data.get('password')

    # Perform user registration logic and store in database
    user_id = len(users_db) + 1
    users_db[user_id] = {"username": username, "email": email, "password": password}

    return jsonify({"user_id": user_id, "message": "Registration successful"}), 201

# Product Search API
@app.route('/api/products/search', methods=['GET'])
def search_products():
    query = request.args.get('query')
    category = request.args.get('category')
    min_price = float(request.args.get('min_price', 0))
    max_price = float(request.args.get('max_price', float('inf')))

    # Perform product search logic based on parameters
    matching_products = [
        {"product_id": product_id, "name": product["name"], "price": product["price"], "availability": product["availability"]}
        for product_id, product in products_db.items()
        if (not query or query.lower() in product["name"].lower()) and
           (not category or category.lower() in product["category"].lower()) and
           (min_price <= product["price"] <= max_price)
    ]

    return jsonify({"products": matching_products}), 200

# Order Placement API
@app.route('/api/orders/place', methods=['POST'])
def place_order():
    data = request.get_json()
    user_id = data.get('user_id')
    products = data.get('products')

    # Perform order placement logic and store in database
    global order_id_counter
    order_id = order_id_counter
    order_id_counter += 1

    total_price = 0
    for product in products:
        product_id = product['product_id']
        quantity = product['quantity']
        product_info = products_db.get(product_id)
        if product_info and product_info["availability"]:
            total_price += product_info["price"] * quantity

    orders_db[order_id] = {"user_id": user_id, "products": products, "total_price": total_price}

    return jsonify({"order_id": order_id, "total_price": total_price, "message": "Order placed successfully"}), 201

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

from flask import Flask, request, jsonify

app = Flask(__name__)

# Mock databases (For simplicity, we'll use Python dictionaries as databases)
users_db = {}
products_db = {}
orders_db = {}
order_items_db = {}

# User Management API
@app.route('/api/users', methods=['POST'])
def create_user():
    data = request.get_json()
    user_id = len(users_db) + 1
    username = data.get('username')
    password = data.get('password')
    users_db[user_id] = {"username": username, "password": password}
    return jsonify({"user_id": user_id, "message": "User created successfully"}), 201

@app.route('/api/users/<int:user_id>', methods=['GET'])
def get_user(user_id):
    user = users_db.get(user_id)
    if user:
        return jsonify(user), 200
    else:
        return jsonify({"message": "User not found"}), 404

# Product Management API
@app.route('/api/products', methods=['POST'])
def create_product():
    data = request.get_json()
    product_id = len(products_db) + 1
    name = data.get('name')
    description = data.get('description')
    price = data.get('price')
    stock = data.get('stock')
    products_db[product_id] = {"name": name, "description": description, "price": price, "stock": stock}
    return jsonify({"product_id": product_id, "message": "Product created successfully"}), 201

@app.route('/api/products/<int:product_id>', methods=['GET'])
def get_product(product_id):
    product = products_db.get(product_id)
    if product:
        return jsonify(product), 200
    else:
        return jsonify({"message": "Product not found"}), 404

# Order Management API
@app.route('/api/orders', methods=['POST'])
def create_order():
    data = request.get_json()
    user_id = data.get('user_id')
    order_id = len(orders_db) + 1
    order_date = data.get('order_date')
    status = "Processing"  # Assuming initial status is Processing
    orders_db[order_id] = {"user_id": user_id, "order_date": order_date, "status": status}
    
    # Create order items
    order_items = data.get('order_items')
    for item in order_items:
        product_id = item['product_id']
        quantity = item['quantity']
        order_items_db[order_id] = {"product_id": product_id, "quantity": quantity}
    
    return jsonify({"order_id": order_id, "message": "Order created successfully"}), 201

@app.route('/api/orders/<int:order_id>', methods=['GET'])
def get_order(order_id):
    order = orders_db.get(order_id)
    if order:
        return jsonify(order), 200
    else:
        return jsonify({"message": "Order not found"}), 404

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

from flask import Flask, request, jsonify

app = Flask(__name__)

# Rocket Delivery
@app.route('/api/rocket_delivery', methods=['POST'])
def rocket_delivery():
    data = request.get_json()
    user_id = data.get('user_id')
    product_id = data.get('product_id')

    # Implementation for Rocket Delivery goes here...
    # You can use user_id and product_id to track the delivery status and update the database accordingly

    return jsonify({"message": "Rocket Delivery: Swift delivery to customers"}), 200

# Personalized Recommendations
@app.route('/api/personalized_recommendations', methods=['GET'])
def personalized_recommendations():
    user_id = request.args.get('user_id')

    # Implementation for Personalized Recommendations goes here...
    # You can use user_id to fetch user preferences and browsing history, and then provide tailored recommendations

    return jsonify({"message": "Personalized Recommendations: Tailored product recommendations"}), 200

# One-Click Payment
@app.route('/api/one_click_payment', methods=['POST'])
def one_click_payment():
    data = request.get_json()
    user_id = data.get('user_id')
    product_id = data.get('product_id')

    # Implementation for One-Click Payment goes here...
    # You can use user_id and product_id to process the payment and update the order status

    return jsonify({"message": "One-Click Payment: Make purchases with a single click"}), 200

# Easy Returns and Refunds
@app.route('/api/easy_returns_refunds', methods=['POST'])
def easy_returns_refunds():
    data = request.get_json()
    user_id = data.get('user_id')
    order_id = data.get('order_id')

    # Implementation for Easy Returns and Refunds goes here...
    # You can use user_id and order_id to process the return and refund and update the order status

    return jsonify({"message": "Easy Returns and Refunds: Hassle-free return policies and speedy refunds"}), 200

# Flash Deals
@app.route('/api/flash_deals', methods=['GET'])
def flash_deals():
    # Implementation for Flash Deals goes here...
    # You can use date and time to determine if there are any active flash deals and return the deals accordingly

    return jsonify({"message": "Flash Deals: Time-limited heavily discounted offers"}), 200

# Coupang Play
@app.route('/api/coupang_play', methods=['GET'])
def coupang_play():
    user_id = request.args.get('user_id')

    # Implementation for Coupang Play goes here...
    # You can use user_id to track user engagement and interactions with Coupang Play features

    return jsonify({"message": "Coupang Play: Interactive features with discounts and rewards"}), 200

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