HashTable :: main.cpp

#include <iostream>
#include <limits>

#include "Hash.h"
#include "Item.h"

using namespace std;

Hash hash;

void addItem();
void deleteItem();
void searchItem();
void checkIndex();
void showBucketFromIndex();
void showBucketFromKey();
void showHashTable();

int main()
{
    cout << "\nWhat do you want to do?\n\n01. Inset/Update an Item.\n02. Delete an Item."
      << "\n03. Search for an Item.\n04. Check Hash Index for a Key.\n05. Show Bucket From an Index."
      << "\n06. Show Bucket From a Key.\n07. Show Hash Table.\n\nAny other INTEGER : Exit" << endl;
    int opinion;
    cout << "\nChoice/Opinion: "; cin >> opinion;
    switch (opinion)
    {
        case 1: addItem();
            break;
        case 2: deleteItem();
            break;
        case 3: searchItem();
            break;
        case 4: checkIndex();
            break;
        case 5: showBucketFromIndex();
            break;
        case 6: showBucketFromKey();
            break;
        case 7: showHashTable();
            break;
        default: cout << "Thanks, hope to see you again.!" << endl;
            exit(0);
    }
    return 0;
}

void addItem()
{
    cin.sync();
    string name, number;
    cout << "\nName: ";
    getline(cin, name);
    cout << "Phone Number: ";
    getline(cin, number);

    Item *item = ::hash.searchItem(name);
    if (item != NULL)
    {
        item->setPhoneNumber(number);
        cout << "\nItem " << name << " has been updated." << endl;
    }
    else
    {
        ::hash.addItem(name, number);
        cout << "\nItem " << name << " has been created." << endl;
    }
    main();
    // cout << "New Entry has been added: " << name << endl;
}

void deleteItem()
{
    cin.sync();
    string key;
    cout << "\nWhich contact do you wish to delete? Contact Name: ";
    getline(cin, key);
    ::hash.deleteItem(key);
    main();
}

void searchItem()
{
    cin.sync();
    string key;
    cout << "\nWhich contact do you wish to search? Contact Name: ";
    getline(cin, key);

    if (Item *item = ::hash.searchItem(key))
    {
        item->show();
    }
    main();
}

void checkIndex()
{
    cin.sync();
    string key;
    cout << "\nGiven KEY: ";
    getline(cin, key);
    cout << "Generated Index: " << ::hash.hashFunction(key) << endl;
    main();
}

void showBucketFromIndex()
{
    int index;
    cout << "\nBucket No: "; cin >> index;
    ::hash.showBucket(index);
    main();
}

void showBucketFromKey()
{
    cin.sync();
    string key;
    cout << "\nGiven Key: ";
    getline(cin, key);
    ::hash.showBucketFromKey(key);
    main();
}

void showHashTable()
{
    ::hash.showHashTable();
    main();
}