/*
William Castle - c17134 - 10/20/19 - MP3c - Locomotive assignment - The
program takes in a amount of car data depoending on how long the train
is and then assigns a locomotive combination that is fit to do the job
and outputs all the data that is relevent. The input is taken from a
infile that is predone for this assignment and outputs to a outfile
with data organised to be readable. the program assums you will give it
the correct info in the order it wants it and of the type it wants.
*/

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

using namespace std;

int main()
{
	ifstream infile;
	ofstream outfile;

	infile.open("mp3cin.txt");
	outfile.open("mp3cout.txt");

	//train weight constants
	int const train_w_2m = 2000000;
	int const train_w_5m = 5000000;
	int const train_w_7m = 7000000;

	//train size constants
	float const train_l_2m = 50.5;
	float const train_l_5m = 65.0;
	float const train_l_7m = 110.3;
	float const train_l_max = 1257.4;

	//warnings
	string const overweight = "Max Weight has been reached";
	string const warning_length =
		"WARNING - The Maxinum legnth has been reached";

	//declaratoins for reused variables
	int train_id, train_length;
	float car_l, car_w, total_length = 0, total_weight = 0;
	string assigned_loc;
	bool warning = false;

	//output manipulation
	int tab = 16, out_total = 35;

	//intake train id and amount of cars before while set
	infile >> train_id >> train_length;

	//structer argument
	while (infile)
	{
		//echo input data
		outfile << right << setw(28) << "Data for Train Number " << train_id
			<< endl << setw(tab) << "Car Length" << setw(tab) << "Car Weight"
			<< endl << endl;

		//for_loop w/ the number of cars to take in all of the train data
		for (int a = 1; a <= train_length; a++)
		{
			//input for next car
			infile >> car_l >> car_w;

			//echo input data for each car
			outfile << setprecision(3) << setw(tab) << car_l
				<< setprecision(6) << setw(tab) << car_w << endl;

			//add the lentgh and weights to a total value to be used later
			total_length += car_l;
			total_weight += car_w;
		}

		//decide what trains are need for the weight sum from above
		if (total_weight > train_w_2m)
		{
			if (total_weight > train_w_2m*2)
			{
				if (total_weight > train_w_5m)
				{
					if (total_weight > train_w_7m)
					{
						if (total_weight > train_w_5m*2)
						{
							if (total_weight > train_w_7m*2)
							{
								if (total_weight > train_w_7m*3)
								{
									assigned_loc = overweight;
								}
								else
								{
									assigned_loc = "3 GP-7";
									total_length += (train_l_7m * 3);
								}
							}
							else
							{
								assigned_loc = "2 GP-7";
								total_length += (train_l_7m * 2);
							}
						}
						else
						{
							assigned_loc = "2 GP-5";
							total_length += (train_l_5m * 2);
						}
					}
					else
					{
						assigned_loc = "GP-7";
						total_length += train_l_7m;
					}
				}
				else
				{
					assigned_loc = "GP-5";
					total_length += train_l_5m;
				}
			}
			else
			{
				assigned_loc = "2 GP-1";
				total_length += (train_l_2m * 2);
			}
		}
		else
		{
			assigned_loc = "GP-1";
			total_length += train_l_2m;
		}

		//testing for maxmium lenght
		if (total_length > train_l_max)
		{
			warning = true;
		}

		//echo/output the length, weight, and the other stuff
		outfile << endl << left << setw(out_total)
			<< "Total Number Of Train Cars: " << train_length << endl
			<< setw(out_total) << "Total Weight Of Train Cars: "
			<< setprecision(8) << total_weight << " pounds" << endl
			<< setw(out_total) << "Type Of Locomotive(s) Assigened: "
			<< assigned_loc << endl << setw(out_total)
			<< "Total Length Of Train: " << setprecision(5)
			<< total_length << " ft" << endl;

		//output of length warning
		if (warning == true)
		{
			outfile << warning_length << " for Train " << train_id << endl;
		}

		//reset values/setting new outputlines
		warning = false;
		total_length = 0;
		total_weight = 0;
		outfile << endl << endl;

		//intake train id and amount of cars for new set
		infile >> train_id >> train_length;
	}

	infile.close();
	outfile.close();

	return 0;
}