// Purpose:  Main program for testing Vehicle class hierarchy
// Author:   Dr Keith A. Shomper
// Date:     17 Mar 2006

#include <iostream>
#include <string>
#include <vector>
#include <typeinfo>
#include "vehicle.h"
#include "car.h"
#include "truck.h"
#include "sports_car.h"

using namespace std;

typedef vector<Vehicle *> vectorOfVehicles;

// prompt the user for the Vehicle type to create, and get the reply
string prompt(void);

int main() {
	vectorOfVehicles v;				  // allows dynamic creation of Vehicles
									  // or objects derived from Vehicles
	int              numVehicles = 0; // denotes how many Vehicles we have
	string           reply;			  // indicates the type of Vehicle to build
	bool			 error = false;   // set when a user response is in error

	// push a Vehicle into the vector so  first "real" Vehicle is at position 1
	v.push_back(new Vehicle("none"));

	// get the type of Vehicle to create
	reply = prompt();

	while (reply != "quit") {

		// create the new Vehicle object and push it into the vector
		switch (reply[0]) {
		  case 't' :
		  case 'T' : v.push_back(new Truck);
					 break;
		  case 'c' :
		  case 'C' : v.push_back(new Car);
					 break;
		  case 's' :
		  case 'S' : v.push_back(new SportsCar);
					 break;
		  case 'q' :
		  case 'Q' : reply = "quit";
			         continue;
		  default  : cerr << "Incorrect response\n\n";
			         error = true;
		}

		// if no error, then we have a new Vehicle to initialize via read()
		if (!error) {
			numVehicles++;
			v[numVehicles]->read();
		}

		// reset error flag, and request a new Vehicle type
		error = false;
		reply = prompt();
	}

	// report on what Vehicles were created to test read() and print()
	cout << "\nThe vehicles you created are:\n";
	for (int i = 0; i <= numVehicles; i++) {

		// print the Vehicle characteristics (attributes)
		v[i]->print();

		// use runtime type information (RTTI) to single out one type of
		// Vehicle, also allows us to test both inherited and non-inherited
		// accessor functions
		if (typeid(*v[i])==typeid(SportsCar)) {
			SportsCar *sc = (SportsCar *) v[i];

			cout << "\t\tAt " << sc->getAcceleration() << " ft/sec^2, the " 
				 << sc->getName() << " can go from 0 to 60 mph in \n\t\t"
				 << 60.0 / (sc->getAcceleration() * 3600.0 / 5280.0) 
				 << " seconds.\n";
		}
	}

	return 0;
}

// prompt the user for the Vehicle type to create, and get the reply
string prompt() {
	string reply;    // the user reponse to the prompt
	string dummy;    // to throw away "car" in the response "sports car"

	// prompt for and get user response
	cout << "\nWhich type of vehicle would you like to initialize"
		 << "\n--car, truck, or sports car (or \"quit\" to exit):  ";
	cin  >> reply;

	// handle "sports car" as a special case
	if (reply[0] == 's' || reply[0] == 'S') {
		cin >> dummy;
	}

	return reply;
}