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

using namespace std;

void OpenFile (ifstream& fin, string filename) ;
int Sum (ifstream& fin);
void PrintNumbersFromFile (ifstream& fin);
void resultsnumbers(ifstream& fin,string current_sender,string current_receiver ,int current_dbm, double current_ratio);
void results(ifstream& fin);

int MinValue (ifstream& fin) ;
int MaxValue (ifstream& fin);

int main()
{

    ifstream fin;
    string filename;
    string filename2;

    string current_sender;
    string current_receiver;
    int current_dbm;
    double current_ratio;

    filename = "nodes.txt";

    OpenFile (fin, filename);
    cout << "Id-node" << endl;
    PrintNumbersFromFile(fin);
    fin.close();
    OpenFile(fin,filename);
    results(fin);
    fin.close();


    filename2 = "results.txt";
    OpenFile(fin,filename2);
    while ((fin >> current_sender) && (fin >> current_receiver) &&
       (fin >> current_dbm) && (fin >> current_ratio))
       {
           if(fin.is_open())
           {
               cout << "dbm: " << current_dbm << endl;
               cout << "dmb: " << current_dbm << endl;
               break;
           }




       }


    fin.close();



    return 0;
}

void OpenFile (ifstream& fin, string filename) { // fall sem opnar skra
    fin.open (filename.c_str()) ;
    if (fin.fail()) {
        cout << "Can't open the file " << filename << endl;
    }

}

void results(ifstream& fin) // fall sem les id frá notanda og skilar sender og receiver.
{
     string numbers;
        int counter = 0;
        int sender,recevier;
    cout << "Please select the id for the sender and the receiver: ";
    cin >> sender;
    cin >> recevier;


    if(fin.is_open())
    {



        while(fin >> numbers)
        {
            counter++;
            if(counter == sender)
            {
                cout << "From sender " << numbers;
            }
            else if(counter == recevier)
            {
                cout << " to receiver " << numbers << endl;
            }
            else if (recevier == sender )
            {
                cout << "Sorry, couldn't find any data for this sender-receiver pair." << endl;
                break;
            }


        }





    }

}

int Sum (ifstream& fin) {

        int sum = 0;
        int numbers;
        while (fin >> numbers)  {
            sum = sum + numbers;
        }


    return sum;
}

void PrintNumbersFromFile (ifstream& fin) { // fall sem prentar ut.
    if (fin.is_open()) {
        string numbers;
        int counter = 1;

        while (fin >> numbers) {
              cout << counter++ << "-";
            cout << numbers << endl;
        }


    }

}






int MinValue (ifstream& fin) {
  int minval;
  int number;
  bool firsttime = true;
  while (fin >> number) {
    if (number < minval || firsttime) {
        minval = number;
        firsttime = false;
    }

  }

  return minval;
}

int MaxValue (ifstream& fin) {
    int maxval;
    int number;
    bool firsttime = true;
    while (fin >> number) {
        if (number > maxval || firsttime) {
            maxval = number;
            firsttime = false;
        }
    }
    return maxval;
}