#include <iostream>
#include "phonebook.h"
typedef void (*fPointerType)(phonebook& phonebook);
string name = "";
const int NUM_FUNCTIONS = 5;
int DoPrompt();
void AddEntry(phonebook& phonebook);
void EditContact(phonebook& phonebook);
void DeleteItem(phonebook& phonebook);
void SearchPhonebook(phonebook& phonebook);
void Display(phonebook& phonebook);
void exitContact();
string getValue(string prompt);

int main()
{
    phonebook phBook;

    fPointerType fPointer[NUM_FUNCTIONS] = {
        AddEntry,
        EditContact,
        DeleteItem,
        SearchPhonebook,
        Display };

    while (true)
    {
        int choice = DoPrompt();
        if (choice >= 0 && choice < 6)
        {
            (*fPointer[choice])(phBook);
        }
        else
        {
            cout << "Number is not valid";
        }
    }
}
void AddEntry(phonebook& phonebook)
{

    int n = 0;
    system("cls"); // clear the console screen1
    cout << "Add Numbers" << endl
        << endl
        << endl;
    cout << "Enter Your Entries:-";
    cin >> n;
    cin.ignore(); // ignore the newline character left int the buffer
    if (n < 100)
    {
        for (int i = 0; i < n; i++)
        {
            string name = getValue("Enter Your Name");
            string number = getValue("Enter Your Number");

            phonebook.addEntry(name, number);

            // convert the number string to an  long long
        }
    }
    else
    {
        cout << "Out Of Memory...." << endl
            << "Your Can Enter 99 Entries";
        cin.get();
    }
}
void EditContact(phonebook& phonebook)
{
    cout << "Not Implemented Yet";
}
void DeleteItem(phonebook& phonebook)
{
    system("cls");

    cin.ignore();
    name = "";
    cout << "Enter Name You Want To Delete:-";
    string name = getValue("Enter Name You Want to Delete");

    cout << "Enter to exit...";
    phonebook.removeEntry(name);

    cin.get();
}
void SearchPhonebook(phonebook& phonebook)
{
    system("cls");
    cout << "Find" << endl;
    string name = getValue("Enter Search Name");
    phonebook.searchEntry(name);
    cout << "Press Enter To Exit...";
    cin.get();
}
void exitContact()
{
    cout << "Bye.....";
    exit(0);
}
void Display(phonebook& phonebook)
{
    system("cls");
    phonebook.display();
    cout << "Press Enter To Exit...";
    cin.ignore();
    cin.get();
}
int DoPrompt()
{
    int choice;
    system("cls");
    cout << "Welcome To Phone Book ver 1.0";
    cout << endl
        << endl
        << endl;
    cout << "0.Add A New Contact" << endl;
    cout << "1.Edit A Contact" << endl;
    cout << "2.Delete Contact" << endl;
    cout << "3.Search Contact" << endl;
    cout << "4.View All Contact" << endl;
    cout << "5.Exit" << endl
        << endl;

    while (true)//
    {
        try
        {
            cout << "Enter Your Choice:-" << endl;
            cin >> choice;
            if (cin.fail())
            {
                throw runtime_error("Input must be a number.");
            }
            if (choice < 0 || choice > 5)
            {
                throw runtime_error("Number is not valid.");
            }
            break;
        }
        catch (const exception& e)
        {
            cerr << "Error: " << e.what() << endl;
            cin.clear();
            cin.ignore(numeric_limits<streamsize>::max(), '\n');
        }
    }

    return choice;
}

string getValue(string prompt)//
{
    string value;
    while (true)
    {
        try
        {
            cout << prompt << ": ";
            getline(cin, value);
            if (value.empty())
            {
                throw runtime_error("Value cannot be empty.");
            }
            break;
        }
        catch (const exception& e)
        {
            cerr << "Error: " << e.what() << endl;
        }
    }
    return value;
}