#include "vehicle.h"
#include <fstream>
#include <iostream>
#include <string>
#include <cstdlib>
#include <ctype.h>

using namespace std;

const int MAXVEHICLES = 50;

void openInputFile(ifstream& infile);
void fillArrayFromFile(ifstream& infile, Vehicle *vp[], int& length);
void printArray(Vehicle *vp[], int length);

int main()
{
	Vehicle *vp[MAXVEHICLES];
	ifstream infile;
	int length;

	openInputFile(infile);
	fillArrayFromFile(infile, vp, length);
	printArray(vp, length);
	return 0;
}

void printArray(Vehicle *vp[], int length)
{
	for (int index = 0; index < length; index++) {
		vp[index]->print();
	}
}

void openInputFile(ifstream& infile)
{
	const int failLimit = 4;
	char infileName[256];
	int failCount = 0;

	do {
		cout << "Enter the name of the input file: ";
		cin >> infileName;

		infile.clear();
		infile.open(infileName);

		if (infile.fail()) {
			cout << "The file whose name you've entered can't be opened. " << endl;
			failCount++;
			if (failCount > failLimit) {
				cout << "The program is terminating." << endl;
				exit(1);
			}
		}
	} while (infile.fail());
}

void fillArrayFromFile(ifstream& infile, Vehicle *vp[], int& length)
{
	char vehicleType;
	int vin, modelYear, doors, passCap, emptyWeight, load;

	length = 0;
	while (length < MAXVEHICLES && infile >> vehicleType) {
		if (tolower(vehicleType) == 'c') {
			infile >> vin >> modelYear >> doors >> passCap;
			vp[length] = new Car(vin, modelYear, doors, passCap);
		}
		else if (tolower(vehicleType) == 't') {
			infile >> vin >> modelYear >> emptyWeight >> load;
			vp[length] = new Truck(vin, modelYear, emptyWeight, load);
		}
		else {
			cout << "Unknown vehicle type encountered: " << vehicleType << endl;
			exit(1);
		}
		length++;
	}
}