#include"Dog.h"

void insertDog(Dog *&head);
void displayList(Dog *&head);
void deleteList(Dog *&head);

int main()
{
	Dog *head = NULL;
	int count = 0;

	cout << "Enter dogs into the list: " << endl;

	char anotherOne = 'Y';
	while (anotherOne == 'Y' || anotherOne == 'y')
	{
		insertDog(head);
		cout << "Enter another Dog (Y or N)? ";
		cin >> anotherOne;

	}

	char answer = 'y';
	while (answer == 'y' || answer == 'Y')
	{
		cout << "Display the list (Y/N)?";
		cin >> answer;
		system("cls");
		cout << "Here is the list:\n";
		displayList(head);
	}

	cout << "Here is the list after the delete: " << endl;
	deleteList(head);

	system("pause");
	return 0;
}

void insertDog(Dog *&head)
{
	Dog *temp = new Dog;
	cout << "ID: ";
	cin >> temp->id;
	cin.ignore();

	cout << "Name: ";
	getline(cin, temp->name);

	temp->next = head;
	head = temp;
}

void displayList(Dog *&head)
{
	Dog *temp = head;

	while (temp != NULL)
	{
		cout << "ID:  " << temp->id << endl;
		cout << "Name " << temp->name << endl;
		temp = temp->next;
	}
}

void deleteList(Dog *&head)
{
	Dog *lead = head;
	Dog *follow = head;

	int idNum;
	cout << "Enter an id of a dog to be deleted: ";
	cin >> idNum;

	while ((lead->next != NULL) && (lead->id != idNum))
	{
		follow = lead;
		lead = lead->next;
	}

	if (lead == NULL)
		cout << "Id was not found." << endl;
	else
		follow->next = lead->next;

	if (lead->next == NULL)
	{
		follow->next = NULL;
		delete lead;
	}

	else
		delete lead;
}