// Trenton Stark
// CST 116
// Lab 3

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

using std::cout;
using std::cin;
using std::endl;
using std::ifstream;
using std::string;
using std::setw;
using std::setprecision;
using std::fixed;

const int width = 10; //Affects all tables 

void readFile(ifstream& fin, double fares[], int& totalPass);
void summary(double fares[], int& totalPass);

int main() {
	ifstream fin;
	string fName;
	double fares[50] = { 0 }; //Initializes all cells to 0
	int totalPass = 0;

	//Loops prompt until user enters openable file
	do {
		cout << "Input file name: ";
		cin >> fName;
		fin.open(fName);
		if (!(fin.is_open())) {
			cout << "File couldn't be opened. Try again." << endl;
		}
	} while (!(fin.is_open()));
	cout << endl;

	cout << setw(width) << "Pick:" << setw(width) << "Drop:" << setw(width) << "Pass #:" << setw(width) << "Dist:" << setw(width) << "Fare:" << setw(width) << "Toll:" << setw(width) << "Total:" << setw(width) << "Cost/Mi:" << endl;
	readFile(fin, fares, totalPass); //Inputs data into fares and totalPass while printing out file contents
	summary(fares, totalPass); //Uses fares and totalPass to create a summary
}

void readFile(ifstream& fin, double fares[], int& totalPass) {
	int i = 0;
	int pick, drop, pass;
	double dist, fare, toll, total, cosMi;

	cout << fixed << setprecision(2); //Formats the output down to two decimal points
	while (!(fin.eof())) {
		fin >> pick >> drop >> pass >> dist >> fare >> toll;
		total = fare + toll;
		if (dist == 0) { //Checks if there will be a division by zero, if so set cosMi to 0
			cosMi = 0;
		}
		else {
			cosMi = fare / dist;
		}
		cout << setw(width) << pick << setw(width) << drop << setw(width) << pass << setw(width) << dist << setw(width) << fare << setw(width) << toll << setw(width) << total << setw(width) << cosMi << endl;

		totalPass += pass;
		fares[i] = total;
		i++;
	}
	cout << endl;
}

void summary(double fares[], int& totalPass) {
	float totalPaid = 0, average; //Totals paid must start as zero because each cell is added to the total
	int i;
	for (i = 0; i < 50; i++) { //Adds all cells regardless of how many were written because unwritten cells will be 0
		totalPaid += fares[i];
	}
	average = totalPaid / totalPass;

	cout << "Total Passangers: " << totalPass << endl;
	cout << "Total Fares: " << totalPaid << endl;
	cout << "Mean fare per passanger: " << average << endl;
}