#include <iostream>
#include <string>
#include <fstream>




using namespace std;

void deleteFlavour(){

   bool isThereAnId = false ;  // this boolean is used to see wether theres and id or not


   string line, name;  // these variables will contain the read line from the textfile and the id user will enter


  cout << "Please Enter the ID of record you want to delete: ";
  cin >> name;  // will store what user entered in the variable called name


  ifstream myfile; //instream  to read file
  ofstream temp; //outstream  to write file



 //open the files
  myfile.open("list.txt");
  temp.open("temp.txt");


  //loop the  myfile which is list.txt
  //this while method will loop the text file and get every line  to a variable called line which we declared at the top

  while (getline(myfile, line))
  {

  string s = line.substr (0,name.length() );



  	 if(name != s){

       	// skip all the id user wants to delete
       	// amd write everything on the temp file
	   		temp << line + "\n";


       }
       else {
       	//id found
       	isThereAnId = true ;
       }




  }

  if(isThereAnId) {
  	 cout << "Record Deleted \n" << endl;
  }
  else {
  	cout << "ID Not found \n";
  }

  myfile.close();
  temp.close();
  remove("list.txt");
  rename("temp.txt", "list.txt");
}


int loginstatus = 0 ;
// if 0 , login ;
// if 1 , logout;






void editFlavour(){
	bool isThereAnId = false ;

	string line, name,edit;

	cout << "Please Enter the ID of record you want to Edit: ";
  cin >> name; // this will be the id user will add
  	cout << "Please Enter the new Flavour ";
  cin >> edit ;

  ifstream myfile; //instream
  ofstream temp; //outstream


//open the original and make a temp file
  myfile.open("list.txt");
  temp.open("temp.txt");

   while (getline(myfile, line))
  {



  	 string neweditedline;

  	 string s = line.substr (0,name.length() );

  	 //assuming

     neweditedline = s+" "+edit;


       if(name != s){
	   		temp << line + "\n";


       }
       else {

       	 isThereAnId = true ;
       	cout << "Editing line with  " + neweditedline;
       	temp << neweditedline + "\n";

       }



  }


  if(isThereAnId){
  	cout << "\n The record  has been Edited " << endl;
  }
  else {
  	cout << "ID Not found \n";
  }

  myfile.close();
  temp.close();
  remove("list.txt");
  rename("temp.txt", "list.txt");

}


int getId(){
	ifstream inFile ;
	inFile.open("list.txt");
	int count = 0 ;
	string item;
		while(!inFile.eof()){

			inFile >> item ;
			count++;
		}

 return count + 1;
}

void addFlavour(){


  ofstream out; //outstream


  	out.open("list.txt", ios_base::app);


	string item ;
	int id;

	id = getId();

	cout << "Please Enter  Flavour \n";
	cin >> item ;



	out <<  id ;
	out << " ";
	out <<  item ;
	out << "\n";
	// it will save the flavour like this    01 chocolate

	cout << "Flavour " + item + " Added success" ;

}




void viewAllFlavours(){

	string line ;
	ifstream inFile ;

	inFile.open("list.txt");

		if(inFile.fail()){
			cout << "Error opening the File ";

		}
		else {
			string item ;
			while(getline(inFile, line))
		{

				cout << line;
				cout << "\n";


		}

		}


	}

void menu(){

		int options ;
		bool ex = true ;

		while(ex) {
					cout << "Welcome to World Ice cream\n" ;
		cout << "Please choose an option \n 01) View All Icecream Flavours\n 02) Add new Flavour\n 03) Delete flavour\n 04) Edit Flavour\n 05) logout";
		cin >> options ;

		switch(options){

			case 1: {
				viewAllFlavours();
				break;

			}
			case 2: {
				addFlavour();
				break;
			}

			case 3 :{
				deleteFlavour();
				break;
			}

			case 4 :{
				editFlavour();
				break;
			}

			case 5 : {
				ex = false;
				break;
			}

			case 6 : {
				ex = false;
				break;
			}

			 default : //Optional
      ex << true;

		}
		}

}


int log(){


    cout<<"\n\t\tWELCOME TO ICE WORLD";
    cout<< endl;
    cout<< endl;

    string u,p,u1,p1 ;
    u1="p";
    p1="1234";

    int loginAttempt = 0;

    while (loginAttempt < 3)
{

    cout<<"\n\t\tUSERNAME :" ;
    cin>>u;
    cout<< endl;
    cout<<"\t\tPASSWORD :";
    cin>>p;
    cout<< endl;


        if (u1==u & p1==p)
            menu();
            else
            cout << "Invalid login attempt. Please try again.\n" << '\n';
            loginAttempt++;

       }


    if (loginAttempt == 3)
    {
            cout << "Too many login attempts! The program will now terminate.";

    }
}





int main(){



	log();





	return 0;
}