// This is the test program and question description for SYSC 2002 lab #2 version #1 (D1)

// You are to write and submit files "GasTank.h" and "GasTank.cpp".
// The following code and the sample executable should make it clear as to what methods are required and what they do.
// You must, of course, create the necessary member variables (fields) for your GasTank class.

// Note that the final version of the Date class (Date.h and Date.cpp) is provided on the G: drive for reference.


#include "stdstuff.h"
#include "GasTank.h"

void realMain () {

  GasTank clunker(200), bug, prius(800); 
        // Car "clunker" can go 200km on a tank of gas
        // Car "bug" can go the default, i.e. 400km, on a tank of gas
        // Car "prius" can go 800km on a tank of gas
        // Note that all the cars start out with empty gas tanks.
  try {
     GasTank bmw(-500);
  } catch (invalid_argument &e) {
     cout << "Invalid Argument Exception for car bmw <" << e.what() << "> occurred.\n\n";
  }

  clunker.fill(); // fills the clunker's gas tank 
  bug.fill(); // fills the bug's gas tank 

  clunker.drive(100); // the clunker drives 100km
  bug.drive(200); // the bug drives 200km
  prius.drive(100); // the prius tries to drive 100km, but as it has no gas, this statement has no effect

  try {
     clunker.drive(-100);
  } catch (invalid_argument &e) {
     cout << "Invalid Argument Exception for car clunker <" << e.what() << "> occurred.\n\n";
  }
  
  prius.fill(); // fills the prius' gas tank
  prius.drive(700); // the prius drives 700km

  cout << "Car clunker can drive " << clunker.kmLeft() << "km before it runs out of gas.\n"; // kmLeft should return 100
  cout << "Car bug can drive " << bug.kmLeft() << "km before it runs out of gas.\n"; // kmLeft should return 200
  cout << "Car prius can drive " << prius.kmLeft() << "km before it runs out of gas.\n\n"; // kmLeft should return 100

  cout << "Car clunker's gas tank is ";
  clunker.printLevel(); // should print 50
  cout << "% full.\nCar bug's gas tank is ";
  bug.printLevel(); // should print 50
  cout << "% full.\nCar prius' gas tank is ";
  prius.printLevel(); // should print 12.5
  cout << "% full.\n\n";

  // fill all the tanks
  clunker.fill();
  bug.fill();
  prius.fill();

  cout << "Car clunker can drive " << clunker.kmLeft() << "km before it runs out of gas.\n"; // kmLeft should return 200
  cout << "Car bug can drive " << bug.kmLeft() << "km before it runs out of gas.\n"; // kmLeft should return 400
  cout << "Car prius can drive " << prius.kmLeft() << "km before it runs out of gas.\n\n"; // kmLeft should return 800

  cout << "Car clunker's gas tank is ";
  clunker.printLevel(); // should print 100
  cout << "% full.\nCar bug's gas tank is ";
  bug.printLevel(); // should print 100
  cout << "% full.\nCar prius' gas tank is ";
  prius.printLevel(); // should print 100
  cout << "% full.\n\n";

}

  
int main () {
    try {
        realMain (); 
    }
    catch (exception &e) { // catches all uncaught exceptions
        cout << "\nException <" << e.what() << "> occurred.\n";
    }
    pause ();
    return 0;
}