#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <conio.h>
#include <windows.h>
#include "fstream"
#include "string"
using namespace std;

int num = 0;
char** name = new char*[num];
char** phone = new char*[num];
bool yes = true;
int taskNumber;

//struct cell
//{
//  int num = 0;
//};
//
//struct NamePhone
//{
//  cell number;
//  char** name = new char*[number.num];
//  char** phone = new char*[number.num];
//};

HANDLE h = GetStdHandle(STD_OUTPUT_HANDLE);

void list();
int newList();
void addList();
void deleteList();
void Edit(int& num);
void searchList();
void saveList();
char* getString();
void addName(char**& names, char**& phone, char* name, char* phone2, int& num);
void addName2(char**& names, char**& phone, char* name, char* phone2);

void main()
{


    /*if (!fin.is_open())
    {
        cout << "no" << endl;
    }
    else
    {
        cout << "yes" << endl;
        char ch;
        while (fin.get(ch))
        {
            cout << ch;
        }
    }
    Sleep(5000);*/

    /*getline(f, s);
    f.close();
    cout << s << endl;*/

    FILE* fileNum = fopen("data.bin", "rb");
    fscanf(fileNum, "%i", &num);
    fclose(fileNum);

    string file = "name.bin";
    ifstream fin;
    fin.open(file);

    string str;
    int i = 0;
    while (!fin.eof())
    {
        fin >> name[i];
        i++;
    }
    fin.close();

    /*for (int i = 0; i < num; i++)
    {
        fin >> name[i];
    }
    for (int i = 0; i < num; i++)
    {
        fin >> phone[i];
    }*/
    /*if (num != 0) {
        file = fopen("name.bin", "rb");
        for (int i = 0; i < num; i++)
        {
            fscanf(file, "%s\n", name[i]);
        }
        fclose(file);

        file = fopen("number.bin", "rb");
        for (int i = 0; i < num; i++)
        {
            fscanf(file, "%s\n", phone[i]);
        }
        fclose(file);
    }*/

    while (true)
    {
        int selection = newList();

        system("cls");
        switch (selection)
        {
        case 0: {
            cout << "List: " << endl << endl;
            list();
            cout << endl;
            break;
        }
        case 1: {
            addList();
            break;
        }
        case 2: {
            deleteList();
            break;
        }
        case 3: {
            Edit(num);
            break;
        }
        case 4: {
            searchList();
            break;
        }
        case 5: {
            saveList();
            break;
        }
        default:
            cout << "Error!" << endl;
            break;
        }
        system("pause");
    }
}

void list()
{
    for (int i = 0; i < num; i++)
    {
        cout << i + 1 << ". " << name[i] << "\t" << phone[i] << endl;
    }
}

int newList()
{
    char menu[6][30] =
    {
        " List    ",
        " Add     ",
        " Remove  ",
        " Edit    ",
        " Search  ",
        " Save    "
    };
    int selection = 0;

    while (true)
    {
        system("cls");
        for (int i = 0; i < 6; i++)
        {
            if (i == selection)
            {
                SetConsoleTextAttribute(h, 124);
                cout << menu[i] << endl;
                SetConsoleTextAttribute(h, 7);
            }
            else
            {
                cout << menu[i] << endl;
            }
        }

        int key = _getch();
        if (key == 224)
        {
            key = _getch();
            if (key == 72)
            {
                selection--;
                if (selection < 0)
                    selection = 5;
            }
            if (key == 80)
            {
                selection++;
                selection = selection % 6;
            }
        }
        else if (key == 13)
        {
            return selection;
        }
    }
}

void addList()
{
    cout << "Enter name: ";
    char* name2 = getString();
    cout << "Enter number: ";
    char* phone2 = getString();
    if (yes)
        addName(name, phone, name2, phone2, num);
    else
        addName2(name, phone, name2, phone2);
}

char* getString()
{
    char* name2;
    char buffer[1000];
    cin.getline(buffer, 1000);
    name2 = new char[strlen(buffer) + 1];
    strcpy(name2, buffer);
    return name2;
}

void deleteList()
{
    cout << "Remove: " << endl << endl;
    list();
    cout << endl;
    if (num == 0)
        cout << "You list is empty" << endl << endl;
    else
    {
        int taskNumber;
        cout << "Enter task number: ";
        cin >> taskNumber;
        taskNumber--;
        if (taskNumber >= num)
            cout << "Error!" << endl;
        else
        {
            for (int i = taskNumber; i < num; i++)
            {
                if (i + 1 < num)
                {
                    strcpy(name[i], name[i + 1]);
                    strcpy(phone[i], phone[i + 1]);
                }
                else if (i + 1 == num)
                {
                    strcpy(name[i], " ");
                    strcpy(phone[i], " ");
                }
            }
            num--;
        }
        cin.ignore();
    }
}

void addName(char**& name, char**& phone, char* name2, char* phone2, int& num)
{
    char** temp = new char*[num + 1];
    for (int i = 0; i < num; i++)
    {
        temp[i] = name[i];
    }
    delete[] name;
    name = temp;
    name[num] = name2;

    char** temp2 = new char*[num + 1];
    for (int i = 0; i < num; i++)
    {
        temp2[i] = phone[i];
    }
    delete[] phone;
    phone = temp2;
    phone[num] = phone2;
    num++;
}

void addName2(char**& name, char**& phone, char* name2, char* phone2)
{
    name[taskNumber] = name2;
    phone[taskNumber] = phone2;
    yes = true;
}

void Edit(int& num)
{
    cout << "Edit: " << endl << endl;
    list();
    cout << endl;
    if (num == 0)
        cout << "You list is empty" << endl << endl;
    else
    {
        cout << "Enter task number: ";
        cin >> taskNumber;
        taskNumber--;

        if (taskNumber >= num || taskNumber < 0)
            cout << "Error!" << endl;
        else
        {
            strcpy(name[taskNumber], " ");
            strcpy(phone[taskNumber], " ");
        }
        cin.ignore();
        yes = false;
        addList();
    }
}

void searchList()
{

}

void saveList()
{
    FILE* file = fopen("data.bin", "wb");
    char buffer[10];
    _itoa(num, buffer, 10);
    fputs(buffer, file);
    fclose(file);

    file = fopen("name.bin", "wb");
    for (int i = 0; i < num; i++)
    {
        fprintf(file, "%s\n", name[i]);
    }
    fclose(file);

    file = fopen("number.bin", "wb");
    for (int i = 0; i < num; i++)
    {
        fprintf(file, "%s\n", phone[i]);
    }
    fclose(file);
}