LLD

// write your code here...
Overview:
Requirement:
1. User should be able to create the transaction
2. Initially, users are the part of group
3. SettleUp for a particulr user
4. Need to maintain the history of transactions for every user

Assumption:
users are registered already

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NFR:
1
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Requirements
Users can register and update their profiles
A user's profile should contain at least their name, phone number and password
Users can participate in expenses with other users
Users can participate in groups.
To add an expense, a user must specify either the group, or the other users involved in the expense, along with who paid what and who owes what. They must also specify a description for the expense.
A user can see their total owed amount
A user can see a history of the expenses they're involved in
A user can see a history of the expenses made in a group that they're participating in
Users shouldn't be able to query about groups they are not a member of
Only the user who has created a group can add/remove members to the group
Users can request a settle-up. The application should show a list of transactions, which when executed will ensure that the user no longer owes or recieves money from any other user. Note that this need not settle-up with any other users.
Users can request a settle-up for any group they're participating in. The application should show a list of transactions, which if executed, will ensure that everyone participating in the group is settled up (owes a net of 0 Rs). Note that will only deal with the expenses made inside that group. Expenses outside the group need not be settled.

Good to Have Requirements
When settling a group, we should try to minimize the number of transactions that the group members should make to settle up.
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class User{
    int id;
    String name;
    String phone;
    String password;
    User(int id,String name,String phone,String password){

    }
    UserService us;
}

class userservice{


ExpenseService expservice;
    GroupService grpservice;
}
class GroupService()

{
    createGroup
    addUsertoGroup()
}

class GroupRepository()
{
    List<Group>
}
class ExpenseService{
    void addExpense()
    {

    }
}
class Expenses{
    String description;
    User user;
    int amount;
}

class Group{
    int id;
    String name;
    String created_by;
    List<User> users;
    List<Expenses> expenses;

}

class RegisterUser{
   List<User> users;
   User addUser(int id,String name,String password){
       User u=new user();
       users.add()
    }
}

class GroupService{
    Map<Integer,Group> groupMap=new HashMap<>();
     Group addUserToGroup(User user){


    }



}

class SplitwiseApplication{
 public static void main(String args[]){
     RegisterUser.addUser(id,name,password);
     GroupService.adduserToGroup(int user1,int user2,int groupId)


 }

  void addExpenses(){


  }
 }





}