PhoneBook

// Author - Nfinity [Aman]
// System - One
// Date - 11/13/2018 {mm/dd/yyyy}

#include <iostream>
#include <string.h>
#include <stdlib.h>
#include <algorithm>

using namespace std;

class Contact{
    private:
        string name;
        string number;
        int numberId;
        int isSet = 0;
    public:
        void setContact(string name,string number,int numberId){
            this->name = name;
            this->number = number;
            this->numberId = numberId;
            cout<<"Contact Saved"<<endl;
        }
        int getIsSet(){
            return this->isSet;
        }
        string getNumber(){
            return this->number;
        }
        string getName(){
            return this->name;
        }
};

class PhoneBook{
    private:
        const static int contactListLength = 100;
        Contact contacts[100];
        int numberId = 0;
    public:
        int checkIfSaved(string number){
            int i = 0;
            for(i = 0;i<contactListLength;i++){
                if(contacts[i].getIsSet() == 0){
                    break;
                }
                else{
                    if(number.compare(contacts[i].getNumber()) == 0){
                        return 1;
                    }
                    else{
                        continue;
                    }
                }
            }
            return 0;
        }
        void saveContact(){
            string name,number;
            cout<<"Enter Contact Name : ";
            cin>>name;
            cout<<"Enter Contact Number : ";
            cin>>number;
            if(checkIfSaved(number) == 0){
                contacts[numberId].setContact(name,number,numberId);
                this->numberId++;
                pause();
                clearScreen();
            }
            else{
                cout<<"Contact Already Present! With number "<<number<<endl;
            }
        }
        void printAllContacts(){
            clearScreen();
            int i = 0;
            cout<<"Contacts"<<endl;
            printLines();
            for(i=0;i<numberId;i++){
                cout<<"Name : "<<contacts[i].getName()<<endl;
                cout<<"Number : "<<contacts[i].getNumber()<<endl;
            }
            printLines();
            pause();
            clearScreen();
        }
        void printContactWithIndex(int index){
            cout<<"Name : "<<contacts[index].getName()<<endl;
            cout<<"Number : "<<contacts[index].getNumber()<<endl;
        }
        void searchUsingNumber(){
            clearScreen();
            string number;
            cout<<"Enter atleast starting 3 Numbers to search"<<endl;
            cout<<"Enter Number To Search : ";
            cin>>number;
            printLines();
            int lenghtOfEnteredNumber = number.length();
            int i = 0, flag = 0;
            for(i=0; i < numberId; i++){
                string numberSplited = contacts[i].getNumber().substr(0,lenghtOfEnteredNumber);
                if(number.compare(numberSplited) == 0){
                    printLines();
                    printContactWithIndex(i);
                    printLines();
                    flag++;
                }
            }
            if(flag == 0){
                cout<<"No Match(s) Found!"<<endl;
            }
            pause();
            clearScreen();
        }
        void searchUsingName(){
            clearScreen();
            string name;
            cout<<"Enter atleast starting 3 Character to search"<<endl;
            cout<<"Enter Name To Search : ";
            cin>>name;
            // Convert Name To LowerCase
            name = converToLower(name);
            int lenghtOfEnteredName = name.length();
            int i = 0, flag = 0;
            for(i=0; i < numberId; i++){
                string nameSplitted = converToLower(contacts[i].getName().substr(0,lenghtOfEnteredName));
                if(name.compare(nameSplitted) == 0){
                    printLines();
                    printContactWithIndex(i);
                    printLines();
                    flag++;
                }
            }
            if(flag == 0){
                cout<<"No Match(s) Found!"<<endl;
            }
            pause();
            clearScreen();
        }
        string converToLower(string s){
            string data = s;
            transform(data.begin(), data.end(), data.begin(), ::tolower);
            return data;
        }
        void printLines(){
            int i=0,lineCount = 25;
            for(i = 0; i <= lineCount; i++){
                cout<<"=";
            }
            cout<<"\n";
        }
        void printHelp(){
            cout<<"Actions"<<endl;
            cout<<"Press 1 : To Save Contact"<<endl;
            cout<<"Press 2 : To Display Contacts"<<endl;
            cout<<"Press 3 : To Search Using Number"<<endl;
            cout<<"Press 4 : To Search Using Name"<<endl;
            cout<<"Press 99 : To Exit"<<endl;
            actions();
        }
        void actions(){
            int action = 0;
            cout<<"Action : ";
            cin>>action;
            if(action == 1){
                saveContact();
            }
            else if(action == 2){
                printAllContacts();
            }
            else if(action == 3){
                searchUsingNumber();
            }
            else if(action == 4){
                searchUsingName();
            }
            else if(action == 99){
                exit(0);
            }
            else{
                cout<<"Please Enter A Valid Option"<<endl;
            }
        }
        void clearScreen(){
            system("CLS");
        }
        void pause(){
            system("pause");
        }
        PhoneBook(){
            while(1==1){
                printHelp();
            }
        }
};

int main(){
    PhoneBook pb;
}