/**

 * This program stores animal names.

 */



import java.util.ArrayList;



public class TheDataBase {

  

  /** The ascii file where the names are stored. 

    */

  private String filename = "animals.txt";

 

  /** The list of animal names

    */

  private static ArrayList<Animal> animals = new ArrayList<Animal>();



 

  /** Create a new TheDataBase object 

    */

  public TheDataBase() {

    animals = FileIO.readFile(filename);

  }

  

  /** If animal is not in the list, add it and return true;

    * Otherwise, just return false.

    */

  public boolean addAnimal(String a) {

    for (Animal aName: animals) {

      if (aName.equals(a)) {

        return false;   // animal is already in the list

      }

    }

    animals.add(new Animal(a));

    return true;

  }

  

  /** If aName is in the list, it removes it and returns true.

    * Otherwise, it returns false.

    */

  public boolean removeAnimal(String aName) {

    // for Strings, one camoveAnumn just call animals.remove(a);  

    // However, for general objects, one needs to loop, e.t. :

    for (int i = 0; i < animals.size(); i++) {

      Animal animal = animals.get(i);

      if (aName.equals(animal.getName())) {

        animals.remove(i);

        return true; 

      }

    }

    return false;

  }

  

  /** Remove the name at index iName from the list and return true, assuming the index is in 

    *  the proper range. Otherwise, return false.

    */

  public boolean removeAnimal(int iName) {

    if (iName < animals.size()) {

      animals.remove(iName);

      return true;

    } 

    return false;

  }

  

  /** Creates a String representation of the animals

    */

  public String toString() {

     return animals.toString();

  }

  

  // used only for testing

  public static void main(String[] args) {    

    TheDataBase db = new TheDataBase();

    db.addAnimal("Zebra");

    db.addAnimal("Deer");

    db.addAnimal("Cat");

    db.addAnimal("Deer");

    System.out.println("The animals are " + db);

    System.out.println("removing Cat ");

    db.removeAnimal("Cat");

    System.out.println("The animals now are " + db);

    System.out.println("removing Mouse ");

    if (db.removeAnimal("Mouse"))

       System.out.println("The animals now are " + db);

    else 

      System.out.println("Mouse is not in the list");

  }

 

}