/**
 * Class representing a TikTok Follower Bot.
 */
class TikTokFollowerBot {
    /**
     * Constructor for the TikTokFollowerBot class.
     *
     * @param {string} username - The username of the bot.
     */
    constructor(username) {
        this.username = username;
        this.followers = [];
    }

    /**
     * Method to follow a user on TikTok.
     *
     * @param {string} user - The username of the user to follow.
     */
    followUser(user) {
        this.followers.push(user);
        console.log(`${this.username} is now following ${user}`);
    }

    /**
     * Method to unfollow a user on TikTok.
     *
     * @param {string} user - The username of the user to unfollow.
     */
    unfollowUser(user) {
        const index = this.followers.indexOf(user);
        if (index !== -1) {
            this.followers.splice(index, 1);
            console.log(`${this.username} has unfollowed ${user}`);
        } else {
            console.log(`${this.username} is not following ${user}`);
        }
    }

    /**
     * Method to get the number of followers.
     *
     * @returns {number} The number of followers.
     */
    getNumberOfFollowers() {
        return this.followers.length;
    }
}

// Usage Example for TikTokFollowerBot

const bot = new TikTokFollowerBot("my_bot_username");

bot.followUser("user1");
bot.followUser("user2");
bot.followUser("user3");

console.log(`Number of followers: ${bot.getNumberOfFollowers()}`);

bot.unfollowUser("user2");

console.log(`Number of followers: ${bot.getNumberOfFollowers()}`);