/*
CIS 22C: Sorted Circular Doubly-Linked List with Sentinel Node

This program:
- Creates a sorted linked list (student name and gpa). The list is sorted in ascending order by name.
- Displays the list forwards(A to Z)
- Deletes nodes from the list
- Displays the list backwards(Z to A)

Your task is to finish writing the following three functions:
- default constructor (reuse code from your previous Lab)
- insertNode()  (reuse code from your previous Lab)
- displayListBack()  (reuse code from your previous Lab)
- deleteNode()

 Written by: Iurii Tatishchev
 Reviewed by: Iurii Tatishchev
 IDE: CLion

 */

#include <iostream>
#include <sstream>
#include "StudentList.h"

using namespace std;

void buildList(StudentList &);

int main() {
    // Define a StudentList object
    StudentList list;

    buildList(list); // insert data into the list
    cout << "There are " << list.getCount() << " elements in the list." << endl;
    string answer;
    cout << "Delete [Y/N]? ";
    getline(cin, answer);
    if (answer == "Y" || answer == "y") {
        string targetName;
        cout << "Enter name to be removed from the list:" << endl;
        getline(cin, targetName);
        cout << targetName << (list.deleteNode(targetName) ? " - deleted!" : " - not found!") << endl;
        cout << "There are " << list.getCount() << " elements in the list." << endl;
    }
    cout << endl;
    list.displayListForw();
    list.displayListBack();
    return 0;
}

/* **************************************************
This function builds a sorted linked list with data from the keyboard.
The list is sorted in ascending order by the students' names.
It calls the insertNode() function that inserts the new data at the right location in the linked list.
An input line contains the gpa of a student follow by its name (assume it is a single word name)
To stop reading enter "#"
************************************************** */
void buildList(StudentList &list) {
    string line;
    getline(cin, line);
    while (line != "#") {
        stringstream temp(line); // create a stringstream named temp with data from line
        Student newStu;
        temp >> newStu.gpa;  // read gpa from temp
        temp >> newStu.name; // read name from temp
        list.insertNode(newStu);
        getline(cin, line);
    }

}