Facebook

class User {
    registerUser(userId, userName) {
        this.userId = userId;
        this.userName = userName;
        return "User Created";
    }

    get() {
        return {
            userId: this.userId,
            userName: this.userName
        };
    }
}


class Friend {
    constructor(follower, followee) {
        this.follower = follower;
        this.followee = followee;
    }

    addFriend(userId, friendId) {
        this.friends.push(userId, friendId)
        this.friends.push(friendId, userId)
        return "Added as friend"

    }

    removeFriend(userId, friendId) {
        this.friends = this.friends.filter(friend => !(friend.followee === userId && friend.follower === friendId));
        this.friends = this.friends.filter(friend => !(friend.followee === friendId && friend.follower === userId));
        return "Unfriended successfully";
    }

    get() {
        return this.friends
    }
}


class Post {
    constructor(userId, posts) {
        this.userId = userId;
        this.posts = posts;
        this.postList = []
        this.friends = []
    }

    addPost(userId, posts) {
        this.postList.push(userId, posts);
        return "Added post successfully";
    }
    getFriendPosts(userId) {
        const friend = new Friend();
        this.friends.push(friend.get())
        const friendList = this.friends.filter(eachUser => eachUser.follower === userId).map(friend => friend.followee)
        return this.postList.filter(post => friendList.includes(post.userId))
    }

    searchFriendPosts(userId, search) {
        const friendList = this.friends.filter(eachUser => eachUser.follower === userId).map(friend => friend.followee)
        const postList = this.postList.filter(post => friendList.includes(post.userId))
        return postList.filter(post => post.posts.toLowerCase().includes(search.toLowerCase()));

    }
    get() {
        return this.postList;
    }
}

const userList = [];
const user1 = new User();
user1.registerUser(1, 'Tanvir')
const user2 = new User();
user2.registerUser(2, 'Tanvir')

userList.push(user1.get());
userList.push(user2.get());


const userInfo = user1.get();

console.log(userList,"userList")

// const friend = new Friend();
// friend.addFriend(1, 2);
// friend.removeFriend(1, 2)
// friend.get();

// const post = new Post()
// post.addPost(1, "bangal")
// post.addPost(2, "banal")
// post.getFriendPosts(1)
// post.searchFriendPosts(1, "banal")
// post.get();

// console.log("user", user.get());
// console.log("friend", friend.get());
// console.log("post", post.get());