#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include "diver.h"

using namespace std;

std::istream& read_points (std::istream& in, double d[]);
double totalScore(vector<double> points, double difficulty);
void updateRecord( fstream &updateFile, int id, int round, double score );

int main(int argc, char *argv[])
{            
    for(int i=0; i < argc; i++)
       cout << argv[i] << endl;
       
    if (argc < 3){
        cout << "Invalid parameters" << endl;
        return 0;
    }
              
    // tempvariabler
    string temp;
    char temp2;
    double temp3;
    double difficulty = 0;
    int id = 0;
    int round;
    
    // öppna fil
    ifstream textFile ( argv[2] , ifstream::in );
    
    // läs första raden (omgångens namn)
    textFile >> temp;
    textFile >> round;
        
    cout << "Runda: " << round << endl;
    
    while (!textFile.eof())
    {        
        vector<double> points;
         
        textFile >> temp2; textFile >> temp2;
        textFile >> id;        
        
        textFile >> difficulty; 
        
        while (textFile >> temp3){
            points.push_back(temp3);
        }
        
        if (!textFile.eof()){
            textFile.clear();
        }    
        
        // utskrift
        cout << "ID: " << id << ", diff: " << difficulty << ", points: ";
        for (int i=0; i<5; i++)
            cout << points[i] << " ";
            
        double totals = totalScore(points, difficulty);
        cout << " = " << totals;
        cout << endl;
        
        // uppdatera binärfilen
        fstream binFile( argv[1], ios::in | ios::out | ios::binary );
        updateRecord(binFile, id, round, totals);
        binFile.close();
    }
    textFile.close();      
    return(0);
}

double totalScore(vector<double> points, double difficulty)
{
    double min = points.at(0);
    double max = points.at(0);
    double sum = 0;
    
    for (int i=0; i<7; i++){
        if (points.at(i) < min)
            min = points.at(i);
        if (points.at(i) > max)
            max = points.at(i);
        
        sum += points.at(i);        
    }    
    return ((sum - min - max) * 3 * difficulty) / 5;
}

void updateRecord( fstream &updateFile, int id, int round, double score )
{        
    // temporär "diver"
    Diver the_diver;
    
    // flytta till sökt post
    updateFile.seekg(( id - 1 ) * sizeof( Diver ) );
    
    //läs posten
    updateFile.read( reinterpret_cast< char * >( &the_diver ), sizeof( Diver ) );
    
    // uppdatera posten 
    the_diver.update(round, score);
    
    //flytta filpekaren för att skriva tillbaka posten
    updateFile.seekp( ( id - 1 ) * sizeof( Diver ) );
    
    // skriv tillbaka posten
    updateFile.write( 
     reinterpret_cast< const char * >( &the_diver ), 
     sizeof( Diver ) );
}