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

app = Flask(__name__)

# Data stores for example purposes only
USERS = {
    'user1': {'timeline': [], 'likes': [], 'retweets': [], 'followers': []},
    'user2': {'timeline': [], 'likes': [], 'retweets': [], 'followers': []},
    'user3': {'timeline': [], 'likes': [], 'retweets': [], 'followers': []},
}

MEDIA = []

NOTIFICATIONS = {}

# Endpoint for generating user timeline
@app.route('/timeline/<username>', methods=['GET'])
def get_timeline(username):
    user = USERS.get(username)
    if not user:
        return jsonify({'error': 'User not found.'}), 404

    # Generate timeline
    timeline = []
    for u in USERS.values():
        timeline.extend(u['timeline'])

    # Sort timeline by timestamp in descending order
    timeline = sorted(timeline, key=lambda x: x['timestamp'], reverse=True)

    return jsonify({'timeline': timeline})

# Endpoint for adding a tweet to a user's timeline
@app.route('/timeline/<username>/tweet', methods=['POST'])
def add_tweet(username):
    user = USERS.get(username)
    if not user:
        return jsonify({'error': 'User not found.'}), 404

    # Add tweet to user's timeline
    text = request.json.get('text')
    timestamp = datetime.now()
    tweet = {'text': text, 'timestamp': timestamp}
    user['timeline'].append(tweet)

    # Notify followers
    for follower in user['followers']:
        if follower not in NOTIFICATIONS:
            NOTIFICATIONS[follower] = []
        NOTIFICATIONS[follower].append({'type': 'tweet', 'text': text, 'timestamp': timestamp})

    return jsonify({'success': True})

# Endpoint for tracking likes
@app.route('/like', methods=['POST'])
def track_like():
    username = request.json.get('username')
    tweet_id = request.json.get('tweet_id')
    timestamp = datetime.now()

    # Add like to user's likes
    user = USERS.get(username)
    if not user:
        return jsonify({'error': 'User not found.'}), 404

    user['likes'].append({'tweet_id': tweet_id, 'timestamp': timestamp})

    # Notify user who made the tweet
    for u in USERS.values():
        for tweet in u['timeline']:
            if tweet['timestamp'] < timestamp - timedelta(hours=24):
                continue
            if tweet['text'] == tweet_id:
                tweet_user = list(USERS.keys())[list(USERS.values()).index(u)]
                if tweet_user not in NOTIFICATIONS:
                    NOTIFICATIONS[tweet_user] = []
                NOTIFICATIONS[tweet_user].append({'type': 'like', 'text': tweet_id, 'timestamp': timestamp})

    return jsonify({'success': True})

# Endpoint for tracking retweets
@app.route('/retweet', methods=['POST'])
def retweet():
    data = request.get_json()

    # Check if tweet_id and user_id are present in the request
    if 'tweet_id' not in data or 'user_id' not in data:
        return jsonify({'error': 'Invalid request'}), 400

    tweet_id = data['tweet_id']
    user_id = data['user_id']

    # Check if the tweet exists
    if tweet_id not in tweets:
        return jsonify({'error': 'Tweet not found'}), 404

    # Add the user to the list of retweets for the tweet
    if tweet_id not in retweets:
        retweets[tweet_id] = [user_id]
    else:
        retweets[tweet_id].append(user_id)

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

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

from flask import Flask, request

# create the user service
user_service = Flask(__name__)

@user_service.route("/users/<username>", methods=["GET"])
def get_user(username):
    # retrieve the user data from the database
    user = database.get_user(username)
    # return the user data as JSON
    return {"username": user.username, "name": user.name}

# create the tweet service
tweet_service = Flask(__name__)

@tweet_service.route("/tweets/<tweet_id>", methods=["GET"])
def get_tweet(tweet_id):
    # retrieve the tweet data from the database
    tweet = database.get_tweet(tweet_id)
    # return the tweet data as JSON
    return {"id": tweet.id, "text": tweet.text, "username": tweet.username}

# create the main service
app = Flask(__name__)

@app.route("/<username>/tweets/<tweet_id>", methods=["GET"])
def get_user_tweet(username, tweet_id):
    # retrieve the user data from the user service
    user_response = requests.get(f"http://user_service/users/{username}")
    user = user_response.json()
    # retrieve the tweet data from the tweet service
    tweet_response = requests.get(f"http://tweet_service/tweets/{tweet_id}")
    tweet = tweet_response.json()
    # combine the user and tweet data and return as JSON
    return {"username": user["username"], "name": user["name"], "tweet": tweet["text"]}

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

import java.util.*;

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

class Tweet {
    private String tweetId;
    private User user;
    private String content;
    // other tweet attributes
    
    public Tweet(String tweetId, User user, String content) {
        this.tweetId = tweetId;
        this.user = user;
        this.content = content;
        // initialize other attributes
    }
    
    // Getters and setters for attributes
    // ...
}

class Twitter {
    private Map<String, User> users;
    private List<Tweet> tweets;
    
    public Twitter() {
        this.users = new HashMap<>();
        this.tweets = new ArrayList<>();
    }
    
    public void addUser(User user) {
        users.put(user.getUserId(), user);
    }
    
    public User getUserById(String userId) {
        return users.get(userId);
    }
    
    public void createTweet(String userId, String content) {
        User user = getUserById(userId);
        
        if (user == null) {
            System.out.println("User not found");
            return;
        }
        
        String tweetId = generateTweetId(); // Generate a unique tweet ID
        Tweet tweet = new Tweet(tweetId, user, content);
        tweets.add(tweet);
        
        // Additional logic to update user's timeline, notify followers, etc.
        // ...
    }
    
    public List<Tweet> getTimeline(String userId) {
        List<Tweet> userTimeline = new ArrayList<>();
        
        for (Tweet tweet : tweets) {
            if (tweet.getUser().getUserId().equals(userId)) {
                userTimeline.add(tweet);
            }
        }
        
        return userTimeline;
    }
    
    // Additional methods for handling retweets, likes, follow/unfollow, etc.
    // ...
}

public class Main {
    public static void main(String[] args) {
        Twitter twitter = new Twitter();
        
        User user1 = new User("1", "Alice", "password");
        User user2 = new User("2", "Bob", "password");
        
        twitter.addUser(user1);
        twitter.addUser(user2);
        
        twitter.createTweet("1", "Hello, world!");
        
        List<Tweet> user1Timeline = twitter.getTimeline("1");
        for (Tweet tweet : user1Timeline) {
            System.out.println("User: " + tweet.getUser().getUsername());
            System.out.println("Content: " + tweet.getContent());
            System.out.println();
        }
    }
}

import tweepy
from flask import Flask, jsonify, request

app = Flask(__name__)

# Set up Tweepy API client
consumer_key = 'YOUR_CONSUMER_KEY'
consumer_secret = 'YOUR_CONSUMER_SECRET'
access_token = 'YOUR_ACCESS_TOKEN'
access_token_secret = 'YOUR_ACCESS_TOKEN_SECRET'

auth = tweepy.OAuthHandler(consumer_key, consumer_secret)
auth.set_access_token(access_token, access_token_secret)
api = tweepy.API(auth)

# Endpoint for getting the user's timeline
@app.route('/timeline/<string:screen_name>', methods=['GET'])
def get_timeline(screen_name):
    tweets = []
    try:
        for status in tweepy.Cursor(api.user_timeline, screen_name=screen_name).items(20):
            tweets.append({'id': status.id_str, 'text': status.text})
    except tweepy.TweepError as e:
        return jsonify({'message': 'Error: {}'.format(str(e))}), 500

return jsonify({'tweets': tweets})

# Endpoint for posting a tweet
@app.route('/tweet', methods=['POST'])
def post_tweet():
    text = request.json['text']
    try:
        api.update_status(text)
    except tweepy.TweepError as e:
        return jsonify({'message': 'Error: {}'.format(str(e))}), 500

return jsonify({'message': 'Tweet posted successfully'})

# Endpoint for searching tweets
@app.route('/search', methods=['GET'])
def search_tweets():
    query = request.args.get('q')
    tweets = []
    try:
        for status in tweepy.Cursor(api.search_tweets, q=query).items(20):
            tweets.append({'id': status.id_str, 'text': status.text})
    except tweepy.TweepError as e:
        return jsonify({'message': 'Error: {}'.format(str(e))}), 500

return jsonify({'tweets': tweets})

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

from flask import Flask, request
import tweepy

app = Flask(__name__)

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

api = tweepy.API(auth)

@app.route("/tweets/<username>")
def tweets(username):
    # Get tweets for the given username
    tweets = api.user_timeline(screen_name=username)
    
    # Return a list of tweet text
    return "\n".join([tweet.text for tweet in tweets])

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

import requests

# endpoint for retrieving tweets
tweets_endpoint = "https://api.twitter.com/1.1/statuses/user_timeline.json"

# API key and secret
api_key = "YOUR_API_KEY"
api_secret = "YOUR_API_SECRET"

# API authentication
auth = (api_key, api_secret)

# retrieving tweets
response = requests.get(tweets_endpoint, auth=auth)

# checking response status code
if response.status_code == 200:
    tweets = response.json()
    print("Retrieved tweets: ", tweets)
else:
    print("Failed to retrieve tweets. Response code: ", response.status_code)

# endpoint for posting a tweet
post_tweet_endpoint = "https://api.twitter.com/1.1/statuses/update.json"

# data to be posted
data = {
    "status": "This is a sample tweet posted using the Twitter API"
}

# posting a tweet
response = requests.post(post_tweet_endpoint, data=data, auth=auth)

# checking response status code
if response.status_code == 200:
    tweet = response.json()
    print("Successfully posted tweet: ", tweet)
else:
    print("Failed to post tweet. Response code: ", response.status_code)

import requests

# Twitter API base URL
base_url = "https://api.twitter.com/1.1/"

# API endpoint for getting tweets
get_tweets_endpoint = "statuses/user_timeline.json"

# API endpoint for posting a tweet
post_tweet_endpoint = "statuses/update.json"

# API endpoint for following a user
follow_user_endpoint = "friendships/create.json"

# API endpoint for unfollowing a user
unfollow_user_endpoint = "friendships/destroy.json"

# API endpoint for getting user information
get_user_info_endpoint = "users/show.json"

# API endpoint for getting followers list
get_followers_endpoint = "followers/list.json"

# API endpoint for getting friends list
get_friends_endpoint = "friends/list.json"

# API endpoint for searching for tweets
search_tweets_endpoint = "search/tweets.json"

# API endpoint for getting trends
get_trends_endpoint = "trends/place.json"

# API endpoint for getting direct messages
get_direct_messages_endpoint = "direct_messages.json"

# API endpoint for sending direct messages
send_direct_message_endpoint = "direct_messages/new.json"

# API endpoint for getting likes
get_likes_endpoint = "favorites/list.json"

# API endpoint for creating a like
create_like_endpoint = "favorites/create.json"

# API endpoint for removing a like
remove_like_endpoint = "favorites/destroy.json"

# Function to get tweets for a given username
def get_tweets(username):
    params = {
        "screen_name": username,
        "count": 200
    }

    response = requests.get(base_url + get_tweets_endpoint, params=params, headers=get_headers())

    if response.status_code == 200:
        return response.json()
    else:
        return None

# Function to post a tweet
def post_tweet(status):
    params = {
        "status": status
    }

    response = requests.post(base_url + post_tweet_endpoint, params=params, headers=get_headers())

    if response.status_code == 200:
        return response.json()
    else:
        return None

# Function to get user information for a given username
def get_user_info(username):
    params = {
        "screen_name": username
    }

    response = requests.get(base_url + get_user_info_endpoint, params=params, headers=get_headers())

    if response.status_code == 200:
        return response.json()
    else:
        return None

import requests

# set the endpoint and parameters for the GET request
endpoint = "https://api.twitter.com/1.1/statuses/show.json"
params = {
    "id": "123456789012345678",  # replace with the desired tweet id
    "trim_user": "true"
}

# set the authentication credentials
# (Note: for this example, the authentication credentials are not set, 
# you need to obtain your own credentials by creating a Twitter Developer Account)

# send the GET request and store the response
response = requests.get(endpoint, params=params)

# check if the request was successful
if response.status_code == 200:
    # parse the JSON data from the response
    data = response.json()
    # do something with the data (e.g. print the text of the tweet)
    print(data["text"])
else:
    # handle the error
    print("Request failed with status code", response.status_code)

import tweepy

# Authenticate to Twitter
auth = tweepy.OAuthHandler("consumer_key", "consumer_secret")
auth.set_access_token("access_token", "access_token_secret")

# Create API object
api = tweepy.API(auth)

# Create a tweet
api.update_status("Hello, Twitter!")

# Read tweets from the timeline
timeline_tweets = api.home_timeline()
for tweet in timeline_tweets:
    print(f"{tweet.user.name} said {tweet.text}")

# Follow a user
user_to_follow = "example_user"
api.create_friendship(user_to_follow)

# Read own timeline
own_timeline = api.user_timeline()
for tweet in own_timeline:
    print(f"{tweet.user.name} said {tweet.text}")

# Read other user's timeline
user_timeline = api.user_timeline(screen_name="example_user")
for tweet in user_timeline:
    print(f"{tweet.user.name} said {tweet.text}")

# Send a direct message
recipient = "example_user"
message = "Hello!"
api.send_direct_message(recipient, message)

# Like a tweet
tweet_id = "123456789"
api.create_favorite(tweet_id)

# Retweet a tweet
api.retweet(tweet_id)

# Search for tweets containing a keyword
keyword = "Python"
search_results = api.search_tweets(q=keyword)
for tweet in search_results:
    print(f"{tweet.user.name} said {tweet.text}")

# Tag a user in a tweet
user_to_tag = "example_user"
tweet_text = f"Hey @{user_to_tag}, how's it going?"
api.update_status(tweet_text)

# Tweet with a hashtag
hashtag = "#Python"
tweet_text = f"Check out this cool {hashtag} project!"
api.update_status(tweet_text)

# Bookmark a tweet
tweet_id = "123456789"
api.create_saved_search(tweet_id)

# Reply to a tweet
tweet_id = "123456789"
reply_text = "Thanks for sharing!"
api.update_status(reply_text, in_reply_to_status_id=tweet_id)

from flask import Flask, request, jsonify

app = Flask(__name__)

# User registration
@app.route('/register', methods=['POST'])
def register():
    username = request.json['username']
    email = request.json['email']
    password = request.json['password']

    # Save user information to the database

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

# User authentication
@app.route('/login', methods=['POST'])
def login():
    username = request.json['username']
    password = request.json['password']

    # Validate user credentials against the database

    # Generate an authentication token or session

    return jsonify({'token': 'your_auth_token'})

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

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

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'your_database_connection_string'
db = SQLAlchemy(app)

class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(50), unique=True, nullable=False)
    name = db.Column(db.String(50), nullable=False)
    profile_picture = db.Column(db.String(100))
    bio = db.Column(db.String(200))

# Update user profile
@app.route('/profile', methods=['PUT'])
def update_profile():
    user_id = request.json['user_id']
    username = request.json['username']
    name = request.json['name']
    profile_picture = request.json['profile_picture']
    bio = request.json['bio']

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

    user.username = username
    user.name = name
    user.profile_picture = profile_picture
    user.bio = bio
    db.session.commit()

    return jsonify({'message': 'Profile updated successfully'})

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

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

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'your_database_connection_string'
db = SQLAlchemy(app)

class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(50), unique=True, nullable=False)

class UserRelationship(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    follower_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
    following_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)

# Follow user
@app.route('/follow', methods=['POST'])
def follow_user():
    follower_id = request.json['follower_id']
    following_id = request.json['following_id']

    if follower_id == following_id:
        return jsonify({'error': 'Cannot follow yourself'})

    relationship = UserRelationship.query.filter_by(follower_id=follower_id, following_id=following_id).first()
    if relationship:
        return jsonify({'error': 'Already following'})

    relationship = UserRelationship(follower_id=follower_id, following_id=following_id)
    db.session.add(relationship)
    db.session.commit()

    return jsonify({'message': 'Followed successfully'})

# Get user followers
@app.route('/followers/<int:user_id>', methods=['GET'])
def get_followers(user_id):
    followers = User.query.join(UserRelationship, UserRelationship.follower_id == User.id)\
                          .filter(UserRelationship.following_id == user_id)\
                          .all()

    follower_list = [follower.username for follower in followers]
    return jsonify({'followers': follower_list})

# Get user following
@app.route('/following/<int:user_id>', methods=['GET'])
def get_following(user_id):
    following = User.query.join(UserRelationship, UserRelationship.following_id == User.id)\
                         .filter(UserRelationship.follower_id == user_id)\
                         .all()

    following_list = [follow.username for follow in following]
    return jsonify({'following': following_list})

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

import mysql.connector

# Connect to the database
cnx = mysql.connector.connect(user='your_username', password='your_password',
                              host='your_host', database='your_database')

# Store a tweet
def store_tweet(user_id, content):
    cursor = cnx.cursor()
    query = "INSERT INTO tweets (user_id, content) VALUES (%s, %s)"
    cursor.execute(query, (user_id, content))
    cnx.commit()
    cursor.close()

# Retrieve tweets for a user
def get_tweets(user_id):
    cursor = cnx.cursor()
    query = "SELECT * FROM tweets WHERE user_id = %s"
    cursor.execute(query, (user_id,))
    tweets = cursor.fetchall()
    cursor.close()
    return tweets

# Example usage
store_tweet(1, "Hello, world!")
store_tweet(1, "This is a tweet.")
tweets = get_tweets(1)
for tweet in tweets:
    print(tweet)

# Close the database connection
cnx.close()

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

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'your_database_connection_string'
db = SQLAlchemy(app)

class Tweet(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    content = db.Column(db.String(280), nullable=False)
    likes = db.Column(db.Integer, default=0)

# Like a tweet
@app.route('/like', methods=['POST'])
def like_tweet():
    tweet_id = request.json['tweet_id']
    tweet = Tweet.query.get(tweet_id)
    if tweet:
        tweet.likes += 1
        db.session.commit()
        return jsonify({'message': 'Tweet liked successfully'})
    else:
        return jsonify({'error': 'Tweet not found'})

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

def get_personalized_news_feed(user_id):
    # Retrieve user's interests and social connections
    interests = get_user_interests(user_id)
    connections = get_user_connections(user_id)

    # Retrieve relevant tweets based on interests and connections
    relevant_tweets = get_tweets_by_interests(interests)
    relevant_tweets += get_tweets_by_connections(connections)

    # Sort and rank the tweets based on relevance or other criteria
    sorted_tweets = rank_tweets(relevant_tweets)

    return sorted_tweets

def get_recent_tweets():
    # Retrieve tweets from the database
    tweets = retrieve_tweets()

    # Sort the tweets based on timestamp (most recent first)
    sorted_tweets = sorted(tweets, key=lambda x: x['timestamp'], reverse=True)

    return sorted_tweets

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

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

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

@socketio.on('new_tweet')
def handle_new_tweet(tweet):
    # Handle the new tweet, e.g., store it in the database
    store_tweet(tweet)
    # Broadcast the new tweet to all connected clients
    emit('new_tweet', tweet, broadcast=True)

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

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

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'your_database_connection_string'
db = SQLAlchemy(app)

class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(50), unique=True, nullable=False)

class Notification(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
    message = db.Column(db.String(280), nullable=False)
    is_read = db.Column(db.Boolean, default=False)

# Create a notification
@app.route('/notify', methods=['POST'])
def create_notification():
    user_id = request.json['user_id']
    message = request.json['message']
    notification = Notification(user_id=user_id, message=message)
    db.session.add(notification)
    db.session.commit()
    return jsonify({'message': 'Notification created successfully'})

# Get user's notifications
@app.route('/notifications/<user_id>', methods=['GET'])
def get_notifications(user_id):
    notifications = Notification.query.filter_by(user_id=user_id).all()
    notification_list = []
    for notification in notifications:
        notification_list.append({
            'id': notification.id,
            'message': notification.message,
            'is_read': notification.is_read
        })
    return jsonify(notification_list)

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

from flask import Flask, request, jsonify
from werkzeug.utils import secure_filename
import os

app = Flask(__name__)
app.config['UPLOAD_FOLDER'] = '/path/to/media/uploads'

# Upload media file
@app.route('/upload', methods=['POST'])
def upload_media():
    file = request.files['file']
    if file:
        filename = secure_filename(file.filename)
        file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))
        return jsonify({'message': 'Media uploaded successfully'})
    else:
        return jsonify({'error': 'No file provided'})

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

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

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

# Emit real-time updates
def emit_update():
    # Your logic to emit updates
    data = {
        'message': 'New tweet!',
        'tweet_id': 123
    }
    emit('update', data, broadcast=True)

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

@socketio.on('connect')
def handle_connect():
    print('Client connected')

@socketio.on('disconnect')
def handle_disconnect():
    print('Client disconnected')

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

import firebase_admin
from firebase_admin import credentials
from firebase_admin import messaging

# Initialize Firebase SDK
cred = credentials.Certificate('path/to/serviceAccountKey.json')
firebase_admin.initialize_app(cred)

# Send push notification
def send_push_notification(user_token, title, message):
    message = messaging.Message(
        notification=messaging.Notification(title=title, body=message),
        token=user_token,
    )
    response = messaging.send(message)
    print('Push notification sent:', response)

# Usage example
user_token = 'user_device_token'
title = 'New Tweet'
message = 'You have a new tweet from JohnDoe'
send_push_notification(user_token, title, message)

import time

# Function to track user activity
def track_user_activity(user_id, activity_type):
    # Your logic to track user activity
    # For example, store the user activity in a database or log file
    timestamp = time.time()
    print(f"User {user_id} performed {activity_type} at {timestamp}")

# Usage example
track_user_activity("user123", "tweet")

# Function to record tweet impression
def record_tweet_impression(tweet_id):
    # Your logic to record the tweet impression
    # For example, update a counter or log the impression event
    print(f"Tweet {tweet_id} impression recorded")

# Usage example
record_tweet_impression(123)

from flask import Flask, request, jsonify

app = Flask(__name__)

# Example endpoint for creating a tweet
@app.route('/tweets', methods=['POST'])
def create_tweet():
    # Your logic to create a tweet
    tweet_text = request.json['text']
    user_id = request.json['user_id']
    # Code to create the tweet...
    # Return the tweet ID or success status
    response = {
        'status': 'success',
        'message': 'Tweet created successfully'
    }
    return jsonify(response)

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

from flask import Flask
app = Flask(__name__)

@app.route('/')
def hello():
    return "Hello, World!"

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=5000)

from cachetools import TTLCache

# Initialize an in-memory cache with a time-to-live (TTL) of 60 seconds
cache = TTLCache(maxsize=100, ttl=60)

# Function to fetch data from cache or source
def get_data(key):
    if key in cache:
        return cache[key]
    else:
        data = fetch_data_from_source(key)
        cache[key] = data
        return data

# Nginx configuration for load balancing
http {
  upstream backend {
    server backend1.example.com;
    server backend2.example.com;
    # Add more backend servers as needed
  }
  
  server {
    listen 80;
    location / {
      proxy_pass http://backend;
    }
  }
}

import datetime

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

class Booking:
    def __init__(self, booking_id, user_id, flight_id, hotel_id):
        self.booking_id = booking_id
        self.user_id = user_id
        self.flight_id = flight_id
        self.hotel_id = hotel_id
        self.timestamp = datetime.datetime.now()

class Flight:
    def __init__(self, flight_id, origin, destination, departure_time, arrival_time, price, available_seats):
        self.flight_id = flight_id
        self.origin = origin
        self.destination = destination
        self.departure_time = departure_time
        self.arrival_time = arrival_time
        self.price = price
        self.available_seats = available_seats

class Hotel:
    def __init__(self, hotel_id, name, location, check_in_date, check_out_date, price_per_night, available_rooms):
        self.hotel_id = hotel_id
        self.name = name
        self.location = location
        self.check_in_date = check_in_date
        self.check_out_date = check_out_date
        self.price_per_night = price_per_night
        self.available_rooms = available_rooms

users = {}
bookings = {}
flights = {}
hotels = {}

{
  "flights": [
    {
      "flight_id": "F123",
      "origin": "SFO",
      "destination": "LAX",
      "departure_time": "2023-07-10 08:00",
      "arrival_time": "2023-07-10 09:30",
      "price": 200.00,
      "available_seats": 50
    },
    {
      "flight_id": "F456",
      "origin": "SFO",
      "destination": "LAX",
      "departure_time": "2023-07-10 10:00",
      "arrival_time": "2023-07-10 11:30",
      "price": 180.00,
      "available_seats": 20
    }
    // Additional flights...
  ]
}

{
  "hotels": [
    {
      "hotel_id": "H123",
      "name": "Example Hotel",
      "location": "New York",
      "check_in_date": "2023-07-10",
      "check_out_date": "2023-07-12",
      "price_per_night": 150.00,
      "available_rooms": 10
    },
    {
      "hotel_id": "H456",
      "name": "Another Hotel",
      "location": "New York",
      "check_in_date": "2023-07-10",
      "check_out_date": "2023-07-12",
      "price_per_night": 180.00,
      "available_rooms": 5
    }
    // Additional hotels...
  ]
}

{
  "booking_id": "B789",
  "user_id": "U123",
  "flight_id": "F123",
  "hotel_id": "H123",
  "total_price": 350.00,
  "status": "CONFIRMED"
}

{
  "user_id": "U123",
  "name": "John Doe",
  "email": "[email protected]"
}

from flask import Flask, jsonify, request

app = Flask(__name__)

# Flight Search API
@app.route('/api/flights/search', methods=['POST'])
def search_flights():
    # Extract parameters from the request
    origin = request.json['origin']
    destination = request.json['destination']
    departure_date = request.json['departure_date']
    return_date = request.json.get('return_date')
    passengers = request.json['passengers']

    # Perform flight search logic and retrieve flights
    flights = perform_flight_search(origin, destination, departure_date, return_date, passengers)

    # Return the flights in the response
    return jsonify({'flights': flights})

# Hotel Search API
@app.route('/api/hotels/search', methods=['POST'])
def search_hotels():
    # Extract parameters from the request
    location = request.json['location']
    check_in_date = request.json['check_in_date']
    check_out_date = request.json['check_out_date']
    guests = request.json['guests']

    # Perform hotel search logic and retrieve hotels
    hotels = perform_hotel_search(location, check_in_date, check_out_date, guests)

    # Return the hotels in the response
    return jsonify({'hotels': hotels})

# Booking API
@app.route('/api/bookings', methods=['POST'])
def create_booking():
    # Extract parameters from the request
    flight_id = request.json['flight_id']
    hotel_id = request.json['hotel_id']
    user_id = request.json['user_id']
    passenger_details = request.json['passenger_details']

    # Perform booking logic and create a new booking
    booking = perform_booking(flight_id, hotel_id, user_id, passenger_details)

    # Return the booking details in the response
    return jsonify(booking)

# User Management API
@app.route('/api/users', methods=['POST'])
def create_user():
    # Extract parameters from the request
    name = request.json['name']
    email = request.json['email']
    password = request.json['password']

    # Create a new user and store it in the database
    user = create_new_user(name, email, password)

    # Return the user details in the response
    return jsonify(user)

# Run the Flask app
if __name__ == '__main__':
    app.run()

from datetime import datetime

# Flight and Hotel Search

def perform_flight_search(origin, destination, departure_date, return_date, passengers):
    # Perform flight search logic and return the flights
    # Replace this with your own implementation
    flights = [
        {
            "flight_id": "F123",
            "origin": origin,
            "destination": destination,
            "departure_time": str(datetime.now()),
            "arrival_time": str(datetime.now()),
            "price": 200.00,
            "available_seats": 50
        },
        {
            "flight_id": "F456",
            "origin": origin,
            "destination": destination,
            "departure_time": str(datetime.now()),
            "arrival_time": str(datetime.now()),
            "price": 180.00,
            "available_seats": 20
        }
    ]
    return flights

def perform_hotel_search(location, check_in_date, check_out_date, guests):
    # Perform hotel search logic and return the hotels
    # Replace this with your own implementation
    hotels = [
        {
            "hotel_id": "H123",
            "name": "Example Hotel",
            "location": location,
            "check_in_date": check_in_date,
            "check_out_date": check_out_date,
            "price_per_night": 150.00,
            "available_rooms": 10
        },
        {
            "hotel_id": "H456",
            "name": "Another Hotel",
            "location": location,
            "check_in_date": check_in_date,
            "check_out_date": check_out_date,
            "price_per_night": 180.00,
            "available_rooms": 5
        }
    ]
    return hotels


# Booking and Payment Processing

def perform_booking(flight_id, hotel_id, user_id, passenger_details):
    # Perform booking logic and return the booking details
    # Replace this with your own implementation
    booking = {
        "booking_id": "B789",
        "user_id": user_id,
        "flight_id": flight_id,
        "hotel_id": hotel_id,
        "total_price": 350.00,
        "status": "CONFIRMED"
    }
    return booking


# Travel Recommendations

def get_travel_recommendations(user_id):
    # Get travel recommendations based on user preferences, previous bookings, etc.
    # Replace this with your own implementation
    recommendations = [
        {
            "destination": "Paris",
            "recommendation_text": "Explore the beautiful city of Paris and visit the Eiffel Tower."
        },
        {
            "destination": "Bali",
            "recommendation_text": "Relax on the pristine beaches of Bali and enjoy the stunning sunsets."
        }
    ]
    return recommendations


# Customer Reviews and Ratings

def get_reviews_and_ratings(flight_id, hotel_id):
    # Get customer reviews and ratings for flights and hotels
    # Replace this with your own implementation
    flight_reviews = [
        {
            "flight_id": flight_id,
            "user_id": "U123",
            "rating": 4,
            "review_text": "Great flight experience. Comfortable seats and friendly staff."
        }
    ]
    hotel_reviews = [
        {
            "hotel_id": hotel_id,
            "user_id": "U456",
            "rating": 5,
            "review_text": "Wonderful hotel with excellent service. Highly recommended."
        }
    ]
    return flight_reviews, hotel_reviews


# Trip Management

def get_trip_details(user_id):
    # Get trip details (itineraries, e-tickets, hotel reservations, etc.) for a user
    # Replace this with your own implementation
    trip_details = {
        "user_id": user_id,
        "itinerary": [
            {
                "flight_id": "F123",
                "origin": "SFO",
                "destination": "LAX",
                "departure_time": str(datetime.now()),
                "arrival_time": str(datetime.now()),
                "hotel_reservation": {
                    "hotel_id": "H123",
                    "name": "Example Hotel",
                    "check_in_date": str(datetime.now()),
                    "check_out_date": str(datetime.now())
                }
            }
        ]
    }
    return trip_details

from flask import Flask, request

app = Flask(__name__)

users = []

@app.route('/api/users', methods=['POST'])
def create_user():
    user_data = request.json
    users.append(user_data)
    return {'message': 'User created successfully'}

@app.route('/api/users/<user_id>', methods=['GET'])
def get_user(user_id):
    for user in users:
        if user['user_id'] == user_id:
            return {'user_id': user['user_id'], 'name': user['name'], 'email': user['email']}
    return {'message': 'User not found'}

@app.route('/api/users/<user_id>', methods=['PUT'])
def update_user(user_id):
    user_data = request.json
    for user in users:
        if user['user_id'] == user_id:
            user['name'] = user_data['name']
            user['email'] = user_data['email']
            return {'message': 'User updated successfully'}
    return {'message': 'User not found'}

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

from flask import Flask, request

app = Flask(__name__)

wallets = []

@app.route('/api/wallets', methods=['POST'])
def create_wallet():
    wallet_data = request.json
    wallets.append(wallet_data)
    return {'message': 'Wallet created successfully'}

@app.route('/api/wallets/<user_id>', methods=['GET'])
def get_wallet(user_id):
    for wallet in wallets:
        if wallet['user_id'] == user_id:
            return {'user_id': wallet['user_id'], 'balance': wallet['balance']}
    return {'message': 'Wallet not found'}

@app.route('/api/wallets/<user_id>', methods=['PUT'])
def update_wallet(user_id):
    wallet_data = request.json
    for wallet in wallets:
        if wallet['user_id'] == user_id:
            wallet['balance'] = wallet_data['balance']
            return {'message': 'Wallet updated successfully'}
    return {'message': 'Wallet not found'}

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

from flask import Flask, request

app = Flask(__name__)

transactions = []

@app.route('/api/transactions', methods=['POST'])
def create_transaction():
    transaction_data = request.json
    transactions.append(transaction_data)
    return {'message': 'Transaction created successfully'}

@app.route('/api/transactions/<transaction_id>', methods=['GET'])
def get_transaction(transaction_id):
    for transaction in transactions:
        if transaction['transaction_id'] == transaction_id:
            return {'transaction_id': transaction['transaction_id'], 'user_id': transaction['user_id'], 'amount': transaction['amount']}
    return {'message': 'Transaction not found'}

@app.route('/api/transactions/<transaction_id>', methods=['PUT'])
def update_transaction(transaction_id):
    transaction_data = request.json
    for transaction in transactions:
        if transaction['transaction_id'] == transaction_id:
            transaction['amount'] = transaction_data['amount']
            return {'message': 'Transaction updated successfully'}
    return {'message': 'Transaction not found'}

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

from flask import Flask, request

app = Flask(__name__)

notifications = []

@app.route('/api/notifications', methods=['POST'])
def send_notification():
    notification_data = request.json
    notifications.append(notification_data)
    return {'message': 'Notification sent successfully'}

@app.route('/api/notifications', methods=['GET'])
def get_notifications():
    return {'notifications': notifications}

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

class User:
    def __init__(self, user_id, username, password):
        self.user_id = user_id
        self.username = username
        self.password = password
        # Other user attributes

class Wallet:
    def __init__(self, user_id, balance):
        self.user_id = user_id
        self.balance = balance
        # Other wallet attributes

class Transaction:
    def __init__(self, transaction_id, user_id, amount):
        self.transaction_id = transaction_id
        self.user_id = user_id
        self.amount = amount
        # Other transaction attributes

class Paytm:
    def __init__(self):
        self.users = {}
        self.wallets = {}
        self.transactions = []

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

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

    def create_wallet(self, user_id, balance):
        wallet = Wallet(user_id, balance)
        self.wallets[user_id] = wallet

    def get_wallet(self, user_id):
        return self.wallets.get(user_id)

    def create_transaction(self, transaction_id, user_id, amount):
        transaction = Transaction(transaction_id, user_id, amount)
        self.transactions.append(transaction)

    # Other methods for handling wallet operations, transaction processing, etc.

from flask import Flask, request, jsonify

app = Flask(__name__)

users = {}
wallets = {}
transactions = []

# User Registration API
@app.route('/users', methods=['POST'])
def register_user():
    user_data = request.json
    user_id = user_data['user_id']
    username = user_data['username']
    password = user_data['password']
    users[user_id] = {
        'username': username,
        'password': password
    }
    return jsonify({'message': 'User registered successfully'})

# Wallet Creation API
@app.route('/users/<user_id>/wallets', methods=['POST'])
def create_wallet(user_id):
    balance = request.json['balance']
    wallets[user_id] = balance
    return jsonify({'message': 'Wallet created successfully'})

# Wallet Balance API
@app.route('/users/<user_id>/wallets', methods=['GET'])
def get_wallet_balance(user_id):
    if user_id in wallets:
        balance = wallets[user_id]
        return jsonify({'balance': balance})
    else:
        return jsonify({'message': 'Wallet not found'}), 404

# Transaction API
@app.route('/transactions', methods=['POST'])
def perform_transaction():
    transaction_data = request.json
    transaction_id = transaction_data['transaction_id']
    user_id = transaction_data['user_id']
    amount = transaction_data['amount']
    transactions.append({
        'transaction_id': transaction_id,
        'user_id': user_id,
        'amount': amount
    })
    return jsonify({'message': 'Transaction performed successfully'})

# Transaction History API
@app.route('/users/<user_id>/transactions', methods=['GET'])
def get_transaction_history(user_id):
    user_transactions = [transaction for transaction in transactions if transaction['user_id'] == user_id]
    return jsonify({'transactions': user_transactions})

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

# User Update API
@app.route('/users/<user_id>', methods=['PUT'])
def update_user(user_id):
    if user_id in users:
        user_data = request.json
        users[user_id]['username'] = user_data['username']
        users[user_id]['password'] = user_data['password']
        return jsonify({'message': 'User updated successfully'})
    else:
        return jsonify({'message': 'User not found'}), 404

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

from flask import Flask, request

app = Flask(__name__)

# User Management API
@app.route('/api/users', methods=['POST'])
def create_user():
    # Logic to create a new user
    # Retrieve user data from the request body
    user_data = request.json
    # Perform necessary validations and save user data to the database
    # Return appropriate response

@app.route('/api/users/<user_id>', methods=['GET', 'PUT', 'DELETE'])
def manage_user(user_id):
    if request.method == 'GET':
        # Logic to retrieve user information by user ID
        # Retrieve user data from the database based on the provided user_id
        # Return user information in the response
    elif request.method == 'PUT':
        # Logic to update user information
        # Retrieve updated user data from the request body
        # Perform necessary validations and update user data in the database
        # Return appropriate response
    elif request.method == 'DELETE':
        # Logic to delete a user account
        # Delete user data from the database based on the provided user_id
        # Return appropriate response

# Payment Processing API
@app.route('/api/payments', methods=['POST'])
def initiate_payment():
    # Logic to initiate a payment transaction
    # Retrieve payment data from the request body
    payment_data = request.json
    # Perform necessary validations and process the payment
    # Return appropriate response

@app.route('/api/payments/<transaction_id>', methods=['GET', 'PUT'])
def manage_payment(transaction_id):
    if request.method == 'GET':
        # Logic to retrieve transaction status by transaction ID
        # Retrieve transaction data from the database based on the provided transaction_id
        # Return transaction status in the response
    elif request.method == 'PUT':
        # Logic to refund a payment transaction
        # Perform necessary validations and process the refund
        # Return appropriate response

# Wallet Operations API
@app.route('/api/wallets', methods=['POST'])
def add_funds():
    # Logic to add funds to the user's wallet
    # Retrieve wallet data and amount from the request body
    wallet_data = request.json
    amount = wallet_data.get('amount')
    # Perform necessary validations and update the wallet balance
    # Return appropriate response

@app.route('/api/wallets/<user_id>', methods=['GET', 'PUT'])
def manage_wallet(user_id):
    if request.method == 'GET':
        # Logic to retrieve wallet balance by user ID
        # Retrieve wallet data from the database based on the provided user_id
        # Return wallet balance in the response
    elif request.method == 'PUT':
        # Logic to transfer funds between wallets
        # Retrieve transfer details from the request body
        transfer_data = request.json
        # Perform necessary validations and process the transfer
        # Return appropriate response

# Merchant Integration API
@app.route('/api/merchants', methods=['POST'])
def register_merchant():
    # Logic to register a new merchant
    # Retrieve merchant data from the request body
    merchant_data = request.json
    # Perform necessary validations and save merchant data to the database
    # Return appropriate response

@app.route('/api/merchants/<merchant_id>', methods=['GET', 'PUT', 'DELETE'])
def manage_merchant(merchant_id):
    if request.method == 'GET':
        # Logic to retrieve merchant information by merchant ID
        # Retrieve merchant data from the database based on the provided merchant_id
        # Return merchant information in the response
    elif request.method == 'PUT':
        # Logic to update merchant information
        # Retrieve updated merchant data from the request body
        # Perform necessary validations and update merchant data in the database
        # Return appropriate response
    elif request.method == 'DELETE':
        # Logic to delete a merchant account
        # Delete merchant data from the database based on the provided merchant_id
        # Return appropriate response

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

from flask import Flask, request

app = Flask(__name__)

# Mobile Wallet Functionality
wallets = {}

@app.route('/api/wallets/create', methods=['POST'])
def create_wallet():
    user_data = request.json
    mobile_number = user_data.get('mobile_number')

    if mobile_number in wallets:
        return {'message': 'Wallet already exists for this mobile number'}

    wallets[mobile_number] = {'balance': 0.0}
    return {'message': 'Wallet created successfully'}

# QR Code Payments Functionality
@app.route('/api/payments/qr', methods=['POST'])
def make_qr_payment():
    payment_data = request.json
    mobile_number = payment_data.get('mobile_number')
    amount = payment_data.get('amount')

    if mobile_number not in wallets:
        return {'message': 'Wallet not found for this mobile number'}

    wallet = wallets[mobile_number]
    balance = wallet['balance']

    if amount > balance:
        return {'message': 'Insufficient balance in the wallet'}

    wallet['balance'] -= amount
    return {'message': 'Payment successful'}

# Peer-to-Peer Transfers Functionality
@app.route('/api/transfers', methods=['POST'])
def make_transfer():
    transfer_data = request.json
    sender_mobile_number = transfer_data.get('sender_mobile_number')
    recipient_mobile_number = transfer_data.get('recipient_mobile_number')
    amount = transfer_data.get('amount')

    if sender_mobile_number not in wallets:
        return {'message': 'Wallet not found for the sender mobile number'}

    if recipient_mobile_number not in wallets:
        return {'message': 'Wallet not found for the recipient mobile number'}

    sender_wallet = wallets[sender_mobile_number]
    recipient_wallet = wallets[recipient_mobile_number]

    sender_balance = sender_wallet['balance']

    if amount > sender_balance:
        return {'message': 'Insufficient balance in the sender wallet'}

    sender_wallet['balance'] -= amount
    recipient_wallet['balance'] += amount

    return {'message': 'Transfer successful'}

# Bill Payments and Recharges Functionality
@app.route('/api/payments/bills', methods=['POST'])
def pay_bill():
    bill_data = request.json
    mobile_number = bill_data.get('mobile_number')
    bill_amount = bill_data.get('bill_amount')

    if mobile_number not in wallets:
        return {'message': 'Wallet not found for this mobile number'}

    wallet = wallets[mobile_number]
    balance = wallet['balance']

    if bill_amount > balance:
        return {'message': 'Insufficient balance in the wallet'}

    wallet['balance'] -= bill_amount
    return {'message': 'Payment successful'}

# Online Shopping Functionality
@app.route('/api/shopping', methods=['POST'])
def place_order():
    order_data = request.json
    mobile_number = order_data.get('mobile_number')
    order_total = order_data.get('order_total')

    if mobile_number not in wallets:
        return {'message': 'Wallet not found for this mobile number'}

    wallet = wallets[mobile_number]
    balance = wallet['balance']

    if order_total > balance:
        return {'message': 'Insufficient balance in the wallet'}

    wallet['balance'] -= order_total
    return {'message': 'Order placed successfully'}

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

from flask import Flask, request, jsonify

app = Flask(__name__)

users = []

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

    user = {
        'username': username,
        'email': email,
        'password': password
    }
    users.append(user)

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

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

    for user in users:
        if user['email'] == email and user['password'] == password:
            return jsonify({"message": "Login successful"})

    return jsonify({"message": "Invalid credentials"})

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

from flask import Flask, jsonify

app = Flask(__name__)

sports = [
    {'id': 1, 'name': 'Football'},
    {'id': 2, 'name': 'Basketball'},
    {'id': 3, 'name': 'Soccer'}
]

@app.route('/sports', methods=['GET'])
def get_sports():
    return jsonify({"sports": sports})

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

from flask import Flask, jsonify

app = Flask(__name__)

teams = [
    {'id': 1, 'name': 'Team A', 'sport_id': 1},
    {'id': 2, 'name': 'Team B', 'sport_id': 1},
    {'id': 3, 'name': 'Team C', 'sport_id': 2},
    {'id': 4, 'name': 'Team D', 'sport_id': 3},
    {'id': 5, 'name': 'Team E', 'sport_id': 3}
]

@app.route('/teams', methods=['GET'])
def get_teams():
    return jsonify({"teams": teams})

@app.route('/teams/<int:team_id>', methods=['GET'])
def get_team(team_id):
    team = next((team for team in teams if team['id'] == team_id), None)
    if team:
        return jsonify({"team": team})
    else:
        return jsonify({"message": "Team not found"})

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

from flask import Flask, jsonify

app = Flask(__name__)

matches = [
    {'id': 1, 'team1_id': 1, 'team2_id': 2, 'date': '2023-07-10', 'location': 'Stadium A'},
    {'id': 2, 'team1_id': 3, 'team2_id': 4, 'date': '2023-07-11', 'location': 'Stadium B'},
    {'id': 3, 'team1_id': 2, 'team2_id': 5, 'date': '2023-07-12', 'location': 'Stadium C'}
]

@app.route('/matches', methods=['GET'])
def get_matches():
    return jsonify({"matches": matches})

@app.route('/matches/<int:match_id>', methods=['GET'])
def get_match(match_id):
    match = next((match for match in matches if match['id'] == match_id), None)
    if match:
        return jsonify({"match": match})
    else:
        return jsonify({"message": "Match not found"})

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

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

class Team:
    def __init__(self, team_id, team_name, sport):
        self.team_id = team_id
        self.team_name = team_name
        self.sport = sport
        # ...

class Match:
    def __init__(self, match_id, team1, team2, date):
        self.match_id = match_id
        self.team1 = team1
        self.team2 = team2
        self.date = date
        # ...

class Statistic:
    def __init__(self, statistic_id, match_id, team_id, score):
        self.statistic_id = statistic_id
        self.match_id = match_id
        self.team_id = team_id
        self.score = score
        # ...

from flask import Flask, jsonify, request

app = Flask(__name__)

# Sample data
sports = [
    {"id": 1, "name": "Football"},
    {"id": 2, "name": "Basketball"}
]

teams = [
    {"id": 1, "name": "Real Madrid", "sport": "Football"},
    {"id": 2, "name": "Los Angeles Lakers", "sport": "Basketball"}
]

# GET /sports
@app.route('/sports', methods=['GET'])
def get_sports():
    return jsonify({"sports": sports})

# GET /sports/{sport_id}/teams
@app.route('/sports/<int:sport_id>/teams', methods=['GET'])
def get_teams(sport_id):
    sport_teams = [team for team in teams if team["sport"] == sports[sport_id-1]["name"]]
    return jsonify({"teams": sport_teams})

# POST /teams
@app.route('/teams', methods=['POST'])
def create_team():
    data = request.get_json()
    new_team = {
        "id": len(teams) + 1,
        "name": data["name"],
        "sport": data["sport"]
    }
    teams.append(new_team)
    return jsonify(new_team)

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

from flask import Flask, jsonify

app = Flask(__name__)

# User API

@app.route('/users', methods=['POST'])
def register_user():
    # Register a new user
    # ...
    return jsonify({"message": "User registered successfully"})

@app.route('/login', methods=['POST'])
def login():
    # Authenticate user credentials
    # ...
    return jsonify({"token": "access_token"})

# Content API

@app.route('/articles', methods=['GET'])
def get_articles():
    # Retrieve articles
    # ...
    return jsonify({"articles": articles})

@app.route('/videos', methods=['GET'])
def get_videos():
    # Retrieve videos
    # ...
    return jsonify({"videos": videos})

# Team API

@app.route('/teams/<int:team_id>', methods=['GET'])
def get_team(team_id):
    # Retrieve team information for the specified team_id
    # ...
    return jsonify({"team": team})

@app.route('/teams/<int:team_id>/statistics', methods=['GET'])
def get_team_statistics(team_id):
    # Retrieve team statistics for the specified team_id
    # ...
    return jsonify({"statistics": statistics})

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

from flask import Flask, jsonify, request

app = Flask(__name__)

# Sample data for demonstration purposes
users = [
    User("1", "john", "[email protected]", "password123"),
    User("2", "jane", "[email protected]", "password456")
]
teams = [
    Team("1", "Team A", "Football"),
    Team("2", "Team B", "Basketball")
]
matches = [
    Match("1", "Team A", "Team B", "2022-07-01"),
    Match("2", "Team B", "Team A", "2022-07-05")
]
statistics = [
    Statistic("1", "1", "1", 2),
    Statistic("2", "1", "2", 1),
    Statistic("3", "2", "2", 3)
]

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

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

# Team API
@app.route("/teams", methods=["GET"])
def get_teams():
    return jsonify([team.__dict__ for team in teams]), 200

@app.route("/teams/<team_id>", methods=["GET"])
def get_team(team_id):
    for team in teams:
        if team.team_id == team_id:
            return jsonify(team.__dict__), 200
    return jsonify({"message": "Team not found"}), 404

# Match API
@app.route("/matches", methods=["GET"])
def get_matches():
    return jsonify([match.__dict__ for match in matches]), 200

@app.route("/matches/<match_id>", methods=["GET"])
def get_match(match_id):
    for match in matches:
        if match.match_id == match_id:
            return jsonify(match.__dict__), 200
    return jsonify({"message": "Match not found"}), 404

# Statistic API
@app.route("/statistics", methods=["GET"])
def get_statistics():
    return jsonify([statistic.__dict__ for statistic in statistics]), 200

@app.route("/statistics/<statistic_id>", methods=["GET"])
def get_statistic(statistic_id):
    for statistic in statistics:
        if statistic.statistic_id == statistic_id:
            return jsonify(statistic.__dict__), 200
    return jsonify({"message": "Statistic not found"}), 404

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

class User:
    def __init__(self, user_id, username):
        self.user_id = user_id
        self.username = username
        self.preferences = []
        self.followed_teams = []
        self.followed_athletes = []

class Team:
    def __init__(self, team_id, team_name):
        self.team_id = team_id
        self.team_name = team_name

class Athlete:
    def __init__(self, athlete_id, athlete_name):
        self.athlete_id = athlete_id
        self.athlete_name = athlete_name

class Event:
    def __init__(self, event_id, event_name, event_type):
        self.event_id = event_id
        self.event_name = event_name
        self.event_type = event_type

class NewsArticle:
    def __init__(self, article_id, title, content):
        self.article_id = article_id
        self.title = title
        self.content = content

class Score:
    def __init__(self, team1, team2, score_team1, score_team2):
        self.team1 = team1
        self.team2 = team2
        self.score_team1 = score_team1
        self.score_team2 = score_team2

class Comment:
    def __init__(self, comment_id, user, content):
        self.comment_id = comment_id
        self.user = user
        self.content = content

class ESPN:
    def __init__(self):
        self.users = []
        self.teams = []
        self.athletes = []
        self.events = []
        self.news_articles = []
        self.scores = []
        self.comments = []

    def create_user(self, user_id, username):
        user = User(user_id, username)
        self.users.append(user)
        return user

    def create_team(self, team_id, team_name):
        team = Team(team_id, team_name)
        self.teams.append(team)
        return team

    def create_athlete(self, athlete_id, athlete_name):
        athlete = Athlete(athlete_id, athlete_name)
        self.athletes.append(athlete)
        return athlete

    def create_event(self, event_id, event_name, event_type):
        event = Event(event_id, event_name, event_type)
        self.events.append(event)
        return event

    def create_news_article(self, article_id, title, content):
        article = NewsArticle(article_id, title, content)
        self.news_articles.append(article)
        return article

    def create_score(self, team1, team2, score_team1, score_team2):
        score = Score(team1, team2, score_team1, score_team2)
        self.scores.append(score)
        return score

    def create_comment(self, comment_id, user, content):
        comment = Comment(comment_id, user, content)
        self.comments.append(comment)
        return comment

    def get_live_stream(self, event_id):
        event = next((event for event in self.events if event.event_id == event_id), None)
        if event:
            return f"Streaming live: {event.event_name}"
        return "Event not found"

    def get_news_and_analysis(self):
        return [article.title for article in self.news_articles]

    def get_scores_and_statistics(self):
        return [f"{score.team1} vs {score.team2}: {score.score_team1}-{score.score_team2}" for score in self.scores]

    def personalize_preferences(self, user_id, preferences):
        user = next((user for user in self.users if user.user_id == user_id), None)
        if user:
            user.preferences = preferences
            return True
        return False

    def follow_team(self, user_id, team_id):
        user = next((user for user in self.users if user.user_id == user_id), None)
        team = next((team for team in self.teams if team.team_id == team_id), None)
        if user and team:
            user.followed_teams.append(team)
            return True
        return False

    def follow_athlete(self, user_id, athlete_id):
        user = next((user for user in self.users if user.user_id == user_id), None)
        athlete = next((athlete for athlete in self.athletes if athlete.athlete_id == athlete_id), None)
        if user and athlete:
            user.followed_athletes.append(athlete)
            return True
        return False

    def add_comment(self, user_id, content):
        user = next((user for user in self.users if user.user_id == user_id), None)
        if user:
            comment_id = len(self.comments) + 1
            comment = Comment(comment_id, user, content)
            self.comments.append(comment)
            return comment
        return None

    def get_comments(self):
        return [comment.content for comment in self.comments]


# Example usage:

espn = ESPN()

user1 = espn.create_user("1", "john")
user2 = espn.create_user("2", "jane")

team1 = espn.create_team("1", "Team A")
team2 = espn.create_team("2", "Team B")

athlete1 = espn.create_athlete("1", "Athlete X")
athlete2 = espn.create_athlete("2", "Athlete Y")

event1 = espn.create_event("1", "Event 1", "Football")
event2 = espn.create_event("2", "Event 2", "Basketball")

article1 = espn.create_news_article("1", "Article 1", "Content 1")
article2 = espn.create_news_article("2", "Article 2", "Content 2")

score1 = espn.create_score(team1.team_name, team2.team_name, 2, 1)
score2 = espn.create_score(team2.team_name, team1.team_name, 3, 0)

comment1 = espn.create_comment("1", user1, "Great game!")
comment2 = espn.create_comment("2", user2, "Awesome goal!")

espn.personalize_preferences("1", ["Football", "Basketball"])
espn.follow_team("1", "1")
espn.follow_athlete("1", "1")

print(espn.get_live_stream("1"))
print(espn.get_news_and_analysis())
print(espn.get_scores_and_statistics())
print([team.team_name for team in user1.followed_teams])
print([athlete.athlete_name for athlete in user1.followed_athletes])

comment3 = espn.add_comment("1", "Fantastic match!")
print(comment3.content)

print(espn.get_comments())

class UserService:
    def register_user(self, username, email, password):
        # Register a new user with the provided details
        # Logic to create a new user in the database
        user_id = generate_unique_user_id()
        user = {
            'user_id': user_id,
            'username': username,
            'email': email,
            'password': password
        }
        save_user(user)
        return user
    
    def authenticate_user(self, email, password):
        # Authenticate user credentials
        # Logic to validate the email and password against the stored data
        user = get_user_by_email(email)
        if user and user['password'] == password:
            return user
        return None
    
    def update_user_profile(self, user_id, profile_data):
        # Update user profile with the provided data
        # Logic to update the user profile in the database
        user = get_user_by_id(user_id)
        if user:
            user.update(profile_data)
            update_user(user)
            return user
        return None

class RideService:
    def request_ride(self, user_id, pickup_location, dropoff_location):
        # Create a new ride request for the user with the provided locations
        # Logic to create a new ride request and store it in the database
        ride_id = generate_unique_ride_id()
        ride_request = {
            'ride_id': ride_id,
            'user_id': user_id,
            'pickup_location': pickup_location,
            'dropoff_location': dropoff_location,
            'status': 'requested'
        }
        save_ride_request(ride_request)
        return ride_request
    
    def get_ride_details(self, ride_id):
        # Retrieve details of the ride with the given ID
        # Logic to fetch and return the ride details from the database
        ride = get_ride_by_id(ride_id)
        return ride
    
    def update_ride_status(self, ride_id, status):
        # Update the status of the ride with the given ID
        # Logic to update the ride status in the database
        ride = get_ride_by_id(ride_id)
        if ride:
            ride['status'] = status
            update_ride(ride)
            return ride
        return None
    
    def match_driver(self, ride_id):
        # Match a driver for the ride with the given ID
        # Logic to match a driver based on availability, location, etc.
        ride = get_ride_by_id(ride_id)
        if ride and ride['status'] == 'requested':
            driver = find_available_driver(ride['pickup_location'])
            if driver:
                ride['driver_id'] = driver['driver_id']
                ride['status'] = 'matched'
                update_ride(ride)
                return driver
        return None
    
    def complete_ride(self, ride_id):
        # Mark the ride with the given ID as completed
        # Logic to update the ride status and perform other necessary operations
        ride = get_ride_by_id(ride_id)
        if ride and ride['status'] == 'in_progress':
            ride['status'] = 'completed'
            update_ride(ride)
            return ride
        return None

class PaymentService:
    def process_payment(self, ride_id, payment_data):
        # Process the payment for the completed ride
        # Logic to calculate the fare, apply discounts/promotions, and charge the user
        ride = get_ride_by_id(ride_id)
        if ride and ride['status'] == 'completed':
            fare = calculate_fare(ride['distance'])
            total_amount = apply_promotions(fare)
            payment_status = process_payment(payment_data, total_amount)
            if payment_status == 'success':
                ride['payment_status'] = 'paid'
                update_ride(ride)
                return 'Payment successful.'
            else:
                return 'Payment failed.'
        return 'Ride not completed.'

class NotificationService:
    def send_notification(self, user_id, message):
        # Send a notification to the user with the given ID
        # Logic to send a notification to the user (e.g., via email, push notification)
        user = get_user_by_id(user_id)
        if user:
            send_notification(user['email'], message)
            return 'Notification sent successfully.'
        return 'User not found.'

from flask import Flask, request

app = Flask(__name__)

users = {}
rides = {}
drivers = {}
payments = {}

# 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"]
    users[user_id] = User(user_id, username, email, password)
    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}, 200
    else:
        return {"message": "User not found"}, 404

# Ride Management API
@app.route("/rides", methods=["POST"])
def request_ride():
    data = request.json
    ride_id = data["ride_id"]
    user_id = data["user_id"]
    pickup_location = data["pickup_location"]
    dropoff_location = data["dropoff_location"]
    rides[ride_id] = Ride(ride_id, user_id, pickup_location, dropoff_location)
    return {"message": "Ride requested successfully"}, 201

@app.route("/rides/<ride_id>", methods=["GET"])
def get_ride(ride_id):
    if ride_id in rides:
        ride = rides[ride_id]
        return {"ride_id": ride.ride_id, "user_id": ride.user_id, "pickup_location": ride.pickup_location, "dropoff_location": ride.dropoff_location, "status": ride.status}, 200
    else:
        return {"message": "Ride not found"}, 404

# Driver Management API
@app.route("/drivers", methods=["POST"])
def register_driver():
    data = request.json
    driver_id = data["driver_id"]
    name = data["name"]
    license_number = data["license_number"]
    vehicle_type = data["vehicle_type"]
    drivers[driver_id] = Driver(driver_id, name, license_number, vehicle_type)
    return {"message": "Driver registered successfully"}, 201

@app.route("/drivers/<driver_id>", methods=["GET"])
def get_driver(driver_id):
    if driver_id in drivers:
        driver = drivers[driver_id]
        return {"driver_id": driver.driver_id, "name": driver.name, "license_number": driver.license_number, "vehicle_type": driver.vehicle_type}, 200
    else:
        return {"message": "Driver not found"}, 404

# Payment API
@app.route("/payments", methods=["POST"])
def make_payment():
    data = request.json
    payment_id = data["payment_id"]
    user_id = data["user_id"]
    ride_id = data["ride_id"]
    amount = data["amount"]
    payments[payment_id] = Payment(payment_id, user_id, ride_id, amount)
    return {"message": "Payment made successfully"}, 201

@app.route("/payments/<payment_id>", methods=["GET"])
def get_payment(payment_id):
    if payment_id in payments:
        payment = payments[payment_id]
        return {"payment_id": payment.payment_id, "user_id": payment.user_id, "ride_id": payment.ride_id, "amount": payment.amount, "status": payment.status}, 200
    else:
        return {"message": "Payment not found"}, 404

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

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 Ride:
    def __init__(self, ride_id, user_id, pickup_location, dropoff_location):
        self.ride_id = ride_id
        self.user_id = user_id
        self.pickup_location = pickup_location
        self.dropoff_location = dropoff_location
        self.status = "requested"
        # Other ride attributes
        
class Driver:
    def __init__(self, driver_id, name, license_number, vehicle_type):
        self.driver_id = driver_id
        self.name = name
        self.license_number = license_number
        self.vehicle_type = vehicle_type
        # Other driver attributes
        
class Payment:
    def __init__(self, payment_id, user_id, ride_id, amount):
        self.payment_id = payment_id
        self.user_id = user_id
        self.ride_id = ride_id
        self.amount = amount
        self.status = "pending"
        # Other payment attributes
        
# Usage example:

# Create a user
user1 = User("1", "john_doe", "[email protected]", "password123")

# Request a ride
ride1 = Ride("456", "1", "123 Main St", "456 Elm St")

# Register a driver
driver1 = Driver("789", "Jane Smith", "ABC123", "Sedan")

# Make a payment
payment1 = Payment("789", "1", "456", 20.50)

# User Service API
class UserService:
    def __init__(self):
        # Initialize necessary dependencies and configurations
        pass
        
    def register_user(self, name, email, password):
        # Register a new user with the provided details
        user_id = generate_unique_id()
        user = {
            'user_id': user_id,
            'name': name,
            'email': email,
            'password': password
        }
        # Save user details in the database or appropriate data store
        return user
        
    def authenticate_user(self, email, password):
        # Authenticate user credentials
        # Query the database to find a user with the provided email and password
        user = get_user_by_email(email)
        if user and user['password'] == password:
            return {'user_id': user['user_id']}
        return None
        
    def get_user_profile(self, user_id):
        # Retrieve user profile details
        # Query the database to fetch user details by user_id
        user = get_user_by_id(user_id)
        return user
        
    def update_user_profile(self, user_id, profile_data):
        # Update user profile with the provided data
        # Query the database to update the user's profile with the new data
        updated_user = update_user(user_id, profile_data)
        return updated_user
        
    def send_notification(self, user_id, message):
        # Send a notification to the user with the given ID
        # Send the notification using appropriate messaging service or mechanism
        send_notification_to_user(user_id, message)


# Ride Service API
class RideService:
    def __init__(self):
        # Initialize necessary dependencies and configurations
        pass
        
    def request_ride(self, user_id, pickup_location, dropoff_location):
        # Create a new ride request for the user with the provided pickup and drop-off locations
        ride_id = generate_unique_id()
        ride_request = {
            'ride_id': ride_id,
            'user_id': user_id,
            'pickup_location': pickup_location,
            'dropoff_location': dropoff_location,
            'status': 'requested'
        }
        # Save the ride request details in the database or appropriate data store
        return ride_request
        
    def cancel_ride_request(self, user_id, ride_id):
        # Cancel a ride request made by the user with the given ID and ride ID
        # Query the database to update the ride's status to 'cancelled' for the provided user and ride ID
        cancel_ride(user_id, ride_id)
        
    def get_ride_details(self, ride_id):
        # Retrieve details of the ride with the given ID
        # Query the database to fetch ride details by ride_id
        ride = get_ride_by_id(ride_id)
        return ride
        
    def update_ride_status(self, ride_id, status):
        # Update the status of the ride with the given ID
        # Query the database to update the ride's status to the provided status value
        updated_ride = update_ride_status(ride_id, status)
        return updated_ride
        
    def match_driver(self, ride_id):
        # Match a driver for the ride with the given ID
        # Query the database or use a matching algorithm to find an available driver for the ride
        driver = find_available_driver(ride_id)
        return driver
        
    def complete_ride(self, ride_id):
        # Mark the ride with the given ID as completed
        # Update the ride's status to 'completed' in the database
        complete_ride(ride_id)


# High-Level API Design
class LyftAPI:
    def __init__(self):
        # Initialize necessary dependencies and configurations
        self.user_service = UserService()
        self.ride_service = RideService()
        
    # User-related endpoints
    def register_user(self, name, email, password):
        # Calls the User Service to register a new user
        return self.user_service.register_user(name, email, password)
        
    def login(self, email, password):
        # Calls the User Service to authenticate user credentials
        return self.user_service.authenticate_user(email, password)
        
    def get_user_profile(self, user_id):
        # Calls the User Service to retrieve user profile details
        return self.user_service.get_user_profile(user_id)
        
    def update_user_profile(self, user_id, profile_data):
        # Calls the User Service to update user profile
        return self.user_service.update_user_profile(user_id, profile_data)
        
    def send_notification(self, user_id, message):
        # Calls the User Service to send a notification to the user
        self.user_service.send_notification(user_id, message)
        
    # Ride-related endpoints
    def request_ride(self, user_id, pickup_location, dropoff_location):
        # Calls the Ride Service to request a ride
        return self.ride_service.request_ride(user_id, pickup_location, dropoff_location)
        
    def cancel_ride(self, user_id, ride_id):
        # Calls the Ride Service to cancel a ride request
        self.ride_service.cancel_ride_request(user_id, ride_id)
        
    def get_ride_details(self, ride_id):
        # Calls the Ride Service to retrieve ride details
        return self.ride_service.get_ride_details(ride_id)
        
    def update_ride_status(self, ride_id, status):
        # Calls the Ride Service to update ride status
        return self.ride_service.update_ride_status(ride_id, status)
        
    def match_driver(self, ride_id):
        # Calls the Ride Service to match a driver for the ride
        return self.ride_service.match_driver(ride_id)
        
    def complete_ride(self, ride_id):
        # Calls the Ride Service to mark the ride as completed
        self.ride_service.complete_ride(ride_id)

class PassengerApp:
    def authenticate_user(self, email, password):
        # Authenticate user credentials against the stored data
        user = get_user_by_email(email)
        if user and user['password'] == password:
            return user
        return None
        
    def update_profile(self, user_id, profile_data):
        # Update the user profile with the provided data
        user = get_user_by_id(user_id)
        if user:
            user.update(profile_data)
            return user
        return None

class PassengerApp:
    def request_ride(self, user_id, pickup_location, dropoff_location):
        # Create a new ride request for the user with the provided locations
        ride_id = generate_unique_ride_id()
        ride_request = {
            'ride_id': ride_id,
            'user_id': user_id,
            'pickup_location': pickup_location,
            'dropoff_location': dropoff_location,
            'status': 'requested'
        }
        save_ride_request(ride_request)
        return ride_request
        
    def match_driver(self, ride_id):
        # Match a driver for the given ride request
        ride_request = get_ride_request_by_id(ride_id)
        if ride_request and ride_request['status'] == 'requested':
            driver = find_available_driver(ride_request['pickup_location'])
            if driver:
                ride_request['driver_id'] = driver['driver_id']
                ride_request['status'] = 'matched'
                update_ride_request(ride_request)
                return driver
        return None

class PassengerApp:
    def track_driver_location(self, driver_id):
        # Retrieve the real-time location of the driver
        driver_location = get_driver_location(driver_id)
        return driver_location

class PassengerApp:
    def send_message(self, recipient_id, message):
        # Send an in-app message to the recipient
        message_id = generate_unique_message_id()
        message_data = {
            'message_id': message_id,
            'sender_id': self.user_id,
            'recipient_id': recipient_id,
            'message': message
        }
        save_message(message_data)
        
    def receive_notifications(self, user_id):
        # Receive in-app notifications for the user
        notifications = get_notifications_for_user(user_id)
        return notifications

class PassengerApp:
    def process_payment(self, ride_id, payment_data):
        # Process the payment for the completed ride
        ride = get_ride_by_id(ride_id)
        if ride and ride['status'] == 'completed':
            fare = calculate_fare(ride['distance'])
            total_amount = apply_promotions(fare)
            payment_status = process_payment(payment_data, total_amount)
            if payment_status == 'success':
                ride['payment_status'] = 'paid'
                update_ride(ride)
                return 'Payment successful.'
            else:
                return 'Payment failed.'
        return 'Ride not completed.'
        
    def integrate_payment_gateway(self, payment_data):
        # Integrate with a third-party payment gateway for secure transactions
        payment_gateway = PaymentGateway()
        payment_status = payment_gateway.process_payment(payment_data)
        return payment_status

class DriverApp:
    def authenticate_driver(self, email, password):
        # Authenticate driver credentials against the stored data
        driver = get_driver_by_email(email)
        if driver and driver['password'] == password:
            return driver
        return None
        
    def update_profile(self, driver_id, profile_data):
        # Update the driver profile with the provided data
        driver = get_driver_by_id(driver_id)
        if driver:
            driver.update(profile_data)
            return driver
        return None

class DriverApp:
    def accept_ride(self, driver_id, ride_id):
        # Accept the ride request as a driver
        ride = get_ride_by_id(ride_id)
        if ride and ride['status'] == 'matched' and ride['driver_id'] == driver_id:
            ride['status'] = 'accepted'
            update_ride(ride)
            return 'Ride accepted.'
        return 'Unable to accept the ride.'
        
    def navigate_to_destination(self, ride_id):
        # Provide navigation instructions to the driver for reaching the destination
        ride = get_ride_by_id(ride_id)
        if ride and ride['status'] == 'accepted':
            navigation = calculate_navigation(ride['pickup_location'], ride['dropoff_location'])
            return navigation
        return 'Unable to provide navigation.'

class DriverApp:
    def track_earnings(self, driver_id):
        # Retrieve the earnings and trip history for the driver
        earnings = calculate_earnings(driver_id)
        trip_history = get_trip_history(driver_id)
        return earnings, trip_history
        
    def update_trip_history(self, driver_id, trip_data):
        # Update the driver's trip history with the completed trip data
        save_trip_history(driver_id, trip_data)

class DriverApp:
    def send_message(self, recipient_id, message):
        # Send an in-app message to the recipient
        message_id = generate_unique_message_id()
        message_data = {
            'message_id': message_id,
            'sender_id': self.driver_id,
            'recipient_id': recipient_id,
            'message': message
        }
        save_message(message_data)
        
    def receive_notifications(self, driver_id):
        # Receive in-app notifications for the driver
        notifications = get_notifications_for_driver(driver_id)
        return notifications

class DriverApp:
    def rate_passenger(self, passenger_id, rating, review):
        # Rate and review the passenger after completing the ride
        passenger = get_passenger_by_id(passenger_id)
        if passenger:
            passenger['rating'] = rating
            passenger['review'] = review
            update_passenger(passenger)
            return 'Passenger rated successfully.'
        return 'Unable to rate the passenger.'
        
    def view_passenger_rating(self, passenger_id):
        # View the rating given by other drivers to a passenger
        passenger = get_passenger_by_id(passenger_id)
        if passenger and 'rating' in passenger:
            return passenger['rating']
        return 'No rating available.'

from flask import Flask, request, jsonify

app = Flask(__name__)

users = {}

@app.route('/users', methods=['POST'])
def create_user():
    user_data = request.get_json()
    user_id = user_data['user_id']
    users[user_id] = user_data
    return jsonify({'message': 'User created successfully.'}), 201

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

@app.route('/users/<user_id>', methods=['PUT'])
def update_user(user_id):
    if user_id not in users:
        return jsonify({'message': 'User not found.'}), 404
    user_data = request.get_json()
    users[user_id] = user_data
    return jsonify({'message': 'User updated successfully.'})

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

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

from flask import Flask, request, jsonify

app = Flask(__name__)

expenses = {}

@app.route('/expenses', methods=['POST'])
def create_expense():
    expense_data = request.get_json()
    expense_id = expense_data['expense_id']
    expenses[expense_id] = expense_data
    return jsonify({'message': 'Expense created successfully.'}), 201

@app.route('/expenses/<expense_id>', methods=['GET'])
def get_expense(expense_id):
    if expense_id not in expenses:
        return jsonify({'message': 'Expense not found.'}), 404
    return jsonify(expenses[expense_id])

@app.route('/expenses/<expense_id>', methods=['PUT'])
def update_expense(expense_id):
    if expense_id not in expenses:
        return jsonify({'message': 'Expense not found.'}), 404
    expense_data = request.get_json()
    expenses[expense_id] = expense_data
    return jsonify({'message': 'Expense updated successfully.'})

@app.route('/expenses/<expense_id>', methods=['DELETE'])
def delete_expense(expense_id):
    if expense_id not in expenses:
        return jsonify({'message': 'Expense not found.'}), 404
    del expenses[expense_id]
    return jsonify({'message': 'Expense deleted successfully.'})

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

from flask import Flask, request, jsonify

app = Flask(__name__)

groups = {}

@app.route('/groups', methods=['POST'])
def create_group():
    group_data = request.get_json()
    group_id = group_data['group_id']
    groups[group_id] = group_data
    return jsonify({'message': 'Group created successfully.'}), 201

@app.route('/groups/<group_id>', methods=['GET'])
def get_group(group_id):
    if group_id not in groups:
        return jsonify({'message': 'Group not found.'}), 404
    return jsonify(groups[group_id])

@app.route('/groups/<group_id>', methods=['PUT'])
def update_group(group_id):
    if group_id not in groups:
        return jsonify({'message': 'Group not found.'}), 404
    group_data = request.get_json()
    groups[group_id] = group_data
    return jsonify({'message': 'Group updated successfully.'})

@app.route('/groups/<group_id>', methods=['DELETE'])
def delete_group(group_id):
    if group_id not in groups:
        return jsonify({'message': 'Group not found.'}), 404
    del groups[group_id]
    return jsonify({'message': 'Group deleted successfully.'})

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

from flask import Flask, request, jsonify

app = Flask(__name__)

transactions = {}

@app.route('/transactions', methods=['POST'])
def create_transaction():
    transaction_data = request.get_json()
    transaction_id = transaction_data['transaction_id']
    transactions[transaction_id] = transaction_data
    return jsonify({'message': 'Transaction created successfully.'}), 201

@app.route('/transactions/<transaction_id>', methods=['GET'])
def get_transaction(transaction_id):
    if transaction_id not in transactions:
        return jsonify({'message': 'Transaction not found.'}), 404
    return jsonify(transactions[transaction_id])

@app.route('/transactions/<transaction_id>', methods=['PUT'])
def update_transaction(transaction_id):
    if transaction_id not in transactions:
        return jsonify({'message': 'Transaction not found.'}), 404
    transaction_data = request.get_json()
    transactions[transaction_id] = transaction_data
    return jsonify({'message': 'Transaction updated successfully.'})

@app.route('/transactions/<transaction_id>', methods=['DELETE'])
def delete_transaction(transaction_id):
    if transaction_id not in transactions:
        return jsonify({'message': 'Transaction not found.'}), 404
    del transactions[transaction_id]
    return jsonify({'message': 'Transaction deleted successfully.'})

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

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 Expense:
    def __init__(self, expense_id, description, amount, currency, timestamp, user_id):
        self.expense_id = expense_id
        self.description = description
        self.amount = amount
        self.currency = currency
        self.timestamp = timestamp
        self.user_id = user_id
        # Other expense attributes

class Group:
    def __init__(self, group_id, group_name):
        self.group_id = group_id
        self.group_name = group_name
        # Other group attributes

class GroupMember:
    def __init__(self, group_member_id, user_id, group_id):
        self.group_member_id = group_member_id
        self.user_id = user_id
        self.group_id = group_id

class Transaction:
    def __init__(self, transaction_id, payer_id, payee_id, amount):
        self.transaction_id = transaction_id
        self.payer_id = payer_id
        self.payee_id = payee_id
        self.amount = amount

from flask import Flask, request, jsonify

app = Flask(__name__)

# Sample data structures to store expenses, groups, and users
expenses = {}
groups = {}
users = {}

# User API
@app.route('/users', methods=['POST'])
def create_user():
    # Create a new user
    # Implementation code here
    return jsonify({'message': 'User created successfully.'}), 201

@app.route('/users/<user_id>', methods=['GET'])
def get_user(user_id):
    # Retrieve user information
    # Implementation code here
    return jsonify(users[user_id])

@app.route('/users/<user_id>', methods=['PUT'])
def update_user(user_id):
    # Update user profile
    # Implementation code here
    return jsonify({'message': 'User updated successfully.'})

@app.route('/users/<user_id>', methods=['DELETE'])
def delete_user(user_id):
    # Delete user account
    # Implementation code here
    return jsonify({'message': 'User deleted successfully.'})

# Expense API
@app.route('/expenses', methods=['POST'])
def create_expense():
    # Create a new expense
    # Implementation code here
    return jsonify({'message': 'Expense created successfully.'}), 201

@app.route('/expenses/<expense_id>', methods=['GET'])
def get_expense(expense_id):
    # Retrieve expense details
    # Implementation code here
    return jsonify(expenses[expense_id])

@app.route('/expenses/<expense_id>', methods=['PUT'])
def update_expense(expense_id):
    # Update expense details
    # Implementation code here
    return jsonify({'message': 'Expense updated successfully.'})

@app.route('/expenses/<expense_id>', methods=['DELETE'])
def delete_expense(expense_id):
    # Delete an expense
    # Implementation code here
    return jsonify({'message': 'Expense deleted successfully.'})

# Group API
@app.route('/groups', methods=['POST'])
def create_group():
    # Create a new group
    # Implementation code here
    return jsonify({'message': 'Group created successfully.'}), 201

@app.route('/groups/<group_id>', methods=['GET'])
def get_group(group_id):
    # Retrieve group information
    # Implementation code here
    return jsonify(groups[group_id])

@app.route('/groups/<group_id>', methods=['PUT'])
def update_group(group_id):
    # Update group details
    # Implementation code here
    return jsonify({'message': 'Group updated successfully.'})

@app.route('/groups/<group_id>', methods=['DELETE'])
def delete_group(group_id):
    # Delete a group
    # Implementation code here
    return jsonify({'message': 'Group deleted successfully.'})

# Transaction API
@app.route('/transactions', methods=['POST'])
def create_transaction():
    # Record a transaction between users
    # Implementation code here
    return jsonify({'message': 'Transaction recorded successfully.'}), 201

@app.route('/transactions/<transaction_id>', methods=['GET'])
def get_transaction(transaction_id):
    # Retrieve transaction details
    # Implementation code here
    return jsonify(transactions[transaction_id])

@app.route('/transactions/user/<user_id>', methods=['GET'])
def get_user_transactions(user_id):
    # Get all transactions involving a specific user
    # Implementation code here
    return jsonify(transactions_for_user)

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

from flask import Flask, request, jsonify

app = Flask(__name__)

users = {}

@app.route('/users', methods=['POST'])
def create_user():
    user_data = request.get_json()
    user_id = user_data.get('user_id')
    if user_id in users:
        return jsonify({'error': 'User already exists.'}), 409
    users[user_id] = user_data
    return jsonify({'message': 'User created successfully.'}), 201

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

@app.route('/users/<user_id>', methods=['PUT'])
def update_user(user_id):
    if user_id not in users:
        return jsonify({'error': 'User not found.'}), 404
    user_data = request.get_json()
    users[user_id] = user_data
    return jsonify({'message': 'User updated successfully.'})

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

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

# User Authentication
@app.route('/authenticate', methods=['POST'])
def authenticate_user():
    username = request.json['username']
    password = request.json['password']

    # Perform authentication logic here
    if is_valid_credentials(username, password):
        token = generate_token(username)
        return jsonify({'token': token}), 200
    else:
        return jsonify({'message': 'Invalid credentials'}), 401

# Expense Creation
@app.route('/expenses', methods=['POST'])
def create_expense():
    amount = request.json['amount']
    category = request.json['category']
    people_involved = request.json['people_involved']

    # Perform expense creation logic here
    expense_id = generate_unique_id()
    expense = {
        'expense_id': expense_id,
        'amount': amount,
        'category': category,
        'people_involved': people_involved
    }
    expenses[expense_id] = expense

    return jsonify(expense), 201

# Bill Splitting
@app.route('/expenses/split', methods=['POST'])
def split_bill():
    expense_id = request.json['expense_id']
    splitting_option = request.json['splitting_option']

    # Perform bill splitting logic here based on the splitting_option
    expense = expenses.get(expense_id)
    if not expense:
        return jsonify({'message': 'Expense not found'}), 404

    amount = expense['amount']
    people_involved = expense['people_involved']
    split_amounts = {}

    if splitting_option == 'equally':
        amount_per_person = amount / len(people_involved)
        split_amounts = {person: amount_per_person for person in people_involved}
    elif splitting_option == 'unequally':
        # Perform custom splitting logic based on specific criteria
        # Assign different amounts to each person involved
        # Update split_amounts accordingly
        pass
    elif splitting_option == 'percentages':
        # Perform splitting based on specified percentages for each person
        # Calculate and update split_amounts accordingly
        pass
    else:
        return jsonify({'message': 'Invalid splitting option'}), 400

    return jsonify(split_amounts), 200

# Group Creation
@app.route('/groups', methods=['POST'])
def create_group():
    group_name = request.json['group_name']
    members = request.json['members']

    # Perform group creation logic here
    group_id = generate_unique_id()
    group = {
        'group_id': group_id,
        'group_name': group_name,
        'members': members
    }
    groups[group_id] = group

    return jsonify(group), 201

# Group Management
@app.route('/groups/<group_id>/members', methods=['POST'])
def add_members_to_group(group_id):
    members = request.json['members']

    # Perform adding members to group logic here
    group = groups.get(group_id)
    if not group:
        return jsonify({'message': 'Group not found'}), 404

    group['members'].extend(members)
    return jsonify(group), 200

# Expense Tracking
@app.route('/expenses', methods=['GET'])
def get_expenses():
    # Perform expense retrieval logic here
    return jsonify(expenses), 200

# Notifications and Reminders
@app.route('/notifications', methods=['POST'])
def send_notification():
    user_id = request.json['user_id']
    message = request.json['message']
    # Perform sending notification logic here
    # You can use a messaging service or notification system to send the notification to the user
    # Return a response indicating the notification status
    return jsonify({'message': f'Notification sent to user {user_id}'}), 200

# Currency Conversion
@app.route('/expenses/convert', methods=['POST'])
def convert_currency():
    amount = request.json['amount']
    source_currency = request.json['source_currency']
    target_currency = request.json['target_currency']
# Perform currency conversion logic here
    converted_amount = convert_currency(amount, source_currency, target_currency)
    return jsonify({'converted_amount': converted_amount}), 200

from flask import Flask, request, jsonify

app = Flask(__name__)

users = {}
expenses = {}
groups = {}
group_members = {}
transactions = {}

# User Management API
@app.route('/users', methods=['POST'])
def create_user():
    user_data = request.get_json()
    user_id = user_data['user_id']
    users[user_id] = user_data
    return jsonify({'message': 'User created successfully.'}), 201

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

# Expense Management API
@app.route('/expenses', methods=['POST'])
def create_expense():
    expense_data = request.get_json()
    expense_id = expense_data['expense_id']
    expenses[expense_id] = expense_data
    return jsonify({'message': 'Expense created successfully.'}), 201

@app.route('/expenses/<expense_id>', methods=['GET'])
def get_expense(expense_id):
    if expense_id not in expenses:
        return jsonify({'message': 'Expense not found.'}), 404
    return jsonify(expenses[expense_id])

# Group Management API
@app.route('/groups', methods=['POST'])
def create_group():
    group_data = request.get_json()
    group_id = group_data['group_id']
    groups[group_id] = group_data
    return jsonify({'message': 'Group created successfully.'}), 201

@app.route('/groups/<group_id>', methods=['GET'])
def get_group(group_id):
    if group_id not in groups:
        return jsonify({'message': 'Group not found.'}), 404
    return jsonify(groups[group_id])

# Group Member Management API
@app.route('/groups/<group_id>/members', methods=['POST'])
def add_group_member(group_id):
    group_member_data = request.get_json()
    group_member_id = group_member_data['group_member_id']
    group_members[group_member_id] = group_member_data
    return jsonify({'message': 'Group member added successfully.'}), 201

@app.route('/groups/<group_id>/members/<group_member_id>', methods=['DELETE'])
def remove_group_member(group_id, group_member_id):
    if group_member_id not in group_members:
        return jsonify({'message': 'Group member not found.'}), 404
    del group_members[group_member_id]
    return jsonify({'message': 'Group member removed successfully.'})

# Transaction Management API
@app.route('/transactions', methods=['POST'])
def create_transaction():
    transaction_data = request.get_json()
    transaction_id = transaction_data['transaction_id']
    transactions[transaction_id] = transaction_data
    return jsonify({'message': 'Transaction created successfully.'}), 201

@app.route('/transactions/<transaction_id>', methods=['GET'])
def get_transaction(transaction_id):
    if transaction_id not in transactions:
        return jsonify({'message': 'Transaction not found.'}), 404
    return jsonify(transactions[transaction_id])

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

class FacebookLiteSimulation:
    def __init__(self):
        self.total_users = 100_000_000
        self.daily_active_users = 30_000_000
        self.posts_viewed_per_user = 5
        self.total_posts_viewed_per_day = self.daily_active_users * self.posts_viewed_per_user
        self.read_write_ratio = 50
        self.posts_uploaded_per_day = self.total_posts_viewed_per_day // self.read_write_ratio

        self.average_post_size_MB = 2
        self.storage_per_day_TB = self.posts_uploaded_per_day * self.average_post_size_MB / 1024
        self.storage_for_3_years_PB = self.storage_per_day_TB * 365 * 3

        self.requests_per_second = self.total_posts_viewed_per_day // (24 * 3600)

    def display_simulation_results(self):
        print("Facebook Lite Scalability Simulation:")
        print("Total number of users:", self.total_users)
        print("Daily active users (DAU):", self.daily_active_users)
        print("Total number of posts viewed per day:", self.total_posts_viewed_per_day)
        print("Total number of posts uploaded per day:", self.posts_uploaded_per_day)
        print("Storage per day (TB):", self.storage_per_day_TB)
        print("Storage for the next 3 years (PB):", self.storage_for_3_years_PB)
        print("Requests per second:", self.requests_per_second)


# Instantiate the FacebookLiteSimulation class
facebook_lite_sim = FacebookLiteSimulation()

# Display the simulation results
facebook_lite_sim.display_simulation_results()

Users:

Username (String)
Email (String)
Password (String)
Posts:

PostId (Int)
UserId (Int) - Foreign key from Users table
Content (String)
Timestamp (DateTime)
Likes:

LikeId (Int)
UserId (Int) - Foreign key from Users table
PostId (Int) - Foreign key from Posts table
Timestamp (DateTime)
Comments:

CommentId (Int)
UserId (Int) - Foreign key from Users table
PostId (Int) - Foreign key from Posts table
Content (String)
Timestamp (DateTime)
Follows:

FollowId (Int)
FollowerUserId (Int) - Foreign key from Users table
FollowingUserId (Int) - Foreign key from Users table

from flask import Flask, request, jsonify

app = Flask(__name__)

# Sample data for demonstration purposes (in a real-world scenario, use databases)
users = [
    {"id": 1, "username": "user1", "password": "password1"},
    {"id": 2, "username": "user2", "password": "password2"}
]

posts = [
    {"id": 1, "user_id": 1, "content": "Post 1 content"},
    {"id": 2, "user_id": 2, "content": "Post 2 content"}
]

friends = [
    {"user_id": 1, "friend_id": 2, "status": "pending"},
    {"user_id": 2, "friend_id": 1, "status": "requested"},
]

# Endpoints for user registration and authentication
@app.route('/api/register', methods=['POST'])
def register_user():
    data = request.get_json()
    username = data['username']
    password = data['password']

    # Check if the username is unique (not implemented here)
    # Create a new user (not implemented here)
    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']

    # Implement user authentication (not implemented here)
    # Generate and return an access token (not implemented here)
    return jsonify({"access_token": "your_access_token"}), 200

# Endpoints for posts management
@app.route('/api/posts', methods=['GET', 'POST'])
def manage_posts():
    if request.method == 'GET':
        # Retrieve posts from the user's timeline (not implemented here)
        return jsonify(posts), 200

    elif request.method == 'POST':
        data = request.get_json()
        content = data['content']
        user_id = 1  # For simplicity, assuming the user is already authenticated

        # Create a new post (not implemented here)
        return jsonify({"message": "Post created successfully"}), 201

@app.route('/api/posts/<int:post_id>', methods=['PUT', 'DELETE'])
def edit_post(post_id):
    if request.method == 'PUT':
        data = request.get_json()
        content = data['content']
        user_id = 1  # For simplicity, assuming the user is already authenticated

        # Update the post (not implemented here)
        return jsonify({"message": "Post updated successfully"}), 200

    elif request.method == 'DELETE':
        user_id = 1  # For simplicity, assuming the user is already authenticated

        # Delete the post (not implemented here)
        return jsonify({"message": "Post deleted successfully"}), 200

# Endpoints for friends management and messaging (not implemented here)...

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

from flask import Flask, request, jsonify

app = Flask(__name__)

# High-Level API Design
# Endpoints for user registration and authentication
@app.route('/api/register', methods=['POST'])
def register_user():
    data = request.get_json()
    username = data['username']
    password = data['password']

    # Implement user registration logic (not implemented here)
    # Return success message
    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']

    # Implement user authentication logic (not implemented here)
    # Return access token (not implemented here)
    return jsonify({"access_token": "your_access_token"}), 200

# Endpoints for posts management
@app.route('/api/posts', methods=['GET', 'POST'])
def manage_posts():
    if request.method == 'GET':
        # Implement retrieving posts from user's timeline (not implemented here)
        return jsonify(posts), 200

    elif request.method == 'POST':
        data = request.get_json()
        content = data['content']
        user_id = 1  # For simplicity, assuming the user is already authenticated

        # Implement creating a new post (not implemented here)
        # Return success message
        return jsonify({"message": "Post created successfully"}), 201

@app.route('/api/posts/<int:post_id>', methods=['PUT', 'DELETE'])
def edit_post(post_id):
    if request.method == 'PUT':
        data = request.get_json()
        content = data['content']
        user_id = 1  # For simplicity, assuming the user is already authenticated

        # Implement updating the post (not implemented here)
        # Return success message
        return jsonify({"message": "Post updated successfully"}), 200

    elif request.method == 'DELETE':
        user_id = 1  # For simplicity, assuming the user is already authenticated

        # Implement deleting the post (not implemented here)
        # Return success message
        return jsonify({"message": "Post deleted successfully"}), 200

# Endpoints for friends management and messaging (not implemented here)...

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

User Management API:

POST /users: Create a new user account.
GET /users/{user_id}: Retrieve user information by user ID.
PATCH /users/{user_id}: Update user profile information.
DELETE /users/{user_id}: Delete a user account.
Explanation: The User Management API handles user-related functionalities like user account creation, retrieval, updating profile information, and account deletion. The endpoints use HTTP methods to perform respective actions.

Post API:

POST /users/{user_id}/posts: Create a new post for a user.
GET /posts/{post_id}: Retrieve a post by post ID.
DELETE /posts/{post_id}: Delete a post by post ID.
GET /users/{user_id}/feed: Get the user's feed.
Explanation: The Post API is responsible for handling post-related operations. Users can create new posts, retrieve specific posts, delete their own posts, and fetch their feed, which includes posts from users they follow.

Like API:

POST /posts/{post_id}/likes: Like a post.
DELETE /posts/{post_id}/likes: Unlike a post.
GET /posts/{post_id}/likes: Get a list of users who liked a post.
Explanation: The Like API allows users to like and unlike posts. Users can also retrieve a list of users who liked a particular post.

Comment API:

POST /posts/{post_id}/comments: Add a comment to a post.
DELETE /comments/{comment_id}: Delete a comment by comment ID.
GET /posts/{post_id}/comments: Get comments for a post.
Explanation: The Comment API enables users to add comments to posts and retrieve comments associated with a particular post. Users can also delete their own comments.

Follow API:

POST /users/{user_id}/follow: Follow a user.
DELETE /users/{user_id}/follow: Unfollow a user.
GET /users/{user_id}/followers: Get followers of a user.
GET /users/{user_id}/following: Get users followed by a user.
Explanation: The Follow API handles user follow/unfollow actions. Users can follow or unfollow other users, and they can also retrieve lists of followers and users they are following.

Feed API:

GET /users/{user_id}/feed: Get the user's feed.
Explanation: The Feed API is responsible for providing a user's personalized feed, which includes posts from users they follow. It helps users stay updated with the latest posts from their connections.

Search API:

GET /search/users: Search for users by their usernames or other attributes.
GET /search/posts: Search for posts by content or other attributes.
Explanation: The Search API enables users to search for other users and posts based on specific criteria like usernames, content, or attributes.

import datetime

# Sample data for demonstration purposes (in a real-world scenario, use databases)
users = [
    {"UserId": 1, "Username": "user1", "Email": "[email protected]", "Password": "password1"},
    {"UserId": 2, "Username": "user2", "Email": "[email protected]", "Password": "password2"}
]

posts = [
    {"PostId": 1, "UserId": 1, "Content": "Post 1 content", "Timestamp": datetime.datetime(2023, 7, 20, 12, 30)},
    {"PostId": 2, "UserId": 2, "Content": "Post 2 content", "Timestamp": datetime.datetime(2023, 7, 21, 8, 45)}
]

likes = []

comments = []

follows = []

# Like Service
def like_post(user_id, post_id):
    # Check if the user and post exist
    user = next((u for u in users if u["UserId"] == user_id), None)
    post = next((p for p in posts if p["PostId"] == post_id), None)
    if user and post:
        # Check if the user has not already liked the post
        if not any(l["UserId"] == user_id and l["PostId"] == post_id for l in likes):
            like_id = len(likes) + 1
            timestamp = datetime.datetime.now()
            likes.append({"LikeId": like_id, "UserId": user_id, "PostId": post_id, "Timestamp": timestamp})
            return True
    return False

# Comment Service
def add_comment(user_id, post_id, content):
    # Check if the user and post exist
    user = next((u for u in users if u["UserId"] == user_id), None)
    post = next((p for p in posts if p["PostId"] == post_id), None)
    if user and post:
        comment_id = len(comments) + 1
        timestamp = datetime.datetime.now()
        comments.append({"CommentId": comment_id, "UserId": user_id, "PostId": post_id, "Content": content, "Timestamp": timestamp})
        return True
    return False

# Follow Service
def follow_user(follower_user_id, following_user_id):
    # Check if both users exist
    follower_user = next((u for u in users if u["UserId"] == follower_user_id), None)
    following_user = next((u for u in users if u["UserId"] == following_user_id), None)
    if follower_user and following_user:
        # Check if the relationship does not exist already
        if not any(f["FollowerUserId"] == follower_user_id and f["FollowingUserId"] == following_user_id for f in follows):
            follow_id = len(follows) + 1
            follows.append({"FollowId": follow_id, "FollowerUserId": follower_user_id, "FollowingUserId": following_user_id})
            return True
    return False

# Post Service
def create_post(user_id, content):
    # Check if the user exists
    user = next((u for u in users if u["UserId"] == user_id), None)
    if user:
        post_id = len(posts) + 1
        timestamp = datetime.datetime.now()
        posts.append({"PostId": post_id, "UserId": user_id, "Content": content, "Timestamp": timestamp})
        return True
    return False

# Test the services
if __name__ == "__main__":
    user1_id = 1
    user2_id = 2
    post1_id = 1
    post2_id = 2

    # Like Service
    print(like_post(user1_id, post2_id))  # True
    print(like_post(user1_id, post2_id))  # False (already liked)

    # Comment Service
    print(add_comment(user2_id, post1_id, "Awesome post!"))  # True

    # Follow Service
    print(follow_user(user1_id, user2_id))  # True
    print(follow_user(user1_id, user2_id))  # False (already following)

    # Post Service
    print(create_post(user2_id, "New post!"))  # True