import java.util.Scanner;


public class SpamFilterDriver
{
    private static SpamFilter filter;
    private static final String FILENAME = "SpamFilter.obj";
    private static final float SPAM_RATIO = (float) 0.05;

    static Scanner input = new Scanner(System.in);

    /**
     * Main method. It calls the menu() method to obtain the user's selection
     * and then makes a decison based upon the user's selection.
     * @param args
     *  Standard main method parameter, unused.
     */
    public static void main(String[] args)
    {
        boolean loop = true;

        while(loop)
        {
            char selection = menu();

            switch(selection)
            {
                case 'C':
                    checkEmail();
                    break;
                case 'I':
                    insertWord();
                    break;
                case 'R':
                    removeWord();
                    break;
                case 'S':
                    searchWord();
                    break;
                case 'Q':
                    loop = false;
                    break;
                default:
                    System.out.println("Invalid Selection!\n\n");
                    break;
            }
        }
    }

    /**
     * Prints a menu and asks for a user's selection
     * @return
     * returns the user's selection.
     */
    private static char menu()
    {
        System.out.print("Welcome to the Spaminator\nPlease select an option:\n\n" +
                "C: Check Email\nI: Insert Word\nR: Remove Word\nS: Search For Word\n" +
                "Q: Quit\n\nSelection:");
        String temp = input.nextLine().trim();
        if (temp.length() == 1)
        {
            char answer = temp.charAt(0);
            answer = Character.toUpperCase(answer);
            return answer;
        }
        else return 'z'; // arbitrary invalid selection
    }
    /**
     * Searches for a specified word in the hash table and prints a message
     * that lets the user know if the word is or is not in the table.
     */
    private static void searchWord()
  {
      System.out.print("Word to find: ");
      String checkMe = input.nextLine();

        boolean isFound = filter.isBadWord(checkMe);

      if(isFound)
        System.out.println(checkMe + " is a bad word");
      else
        System.out.println(checkMe + "was not found in the list of bad words");
  }
/**
 * Removes a word from the hash table. If the element to be removed is not
 * found, it prints an error message instead.
 */
    private static void removeWord()
  {
        System.out.print("Word to remove: ");
      String removeMe = input.nextLine();

      try
    {
        filter.remove(removeMe);
        System.out.println(removeMe + " was successfully rmoved from the list" +
                " of bad words.");
    }
    catch (ElementNotFoundException e)
    {
        System.out.println(e.getMessage());
    }

  }

/**
 * Inserts a word into the hash table.
 */
    private static void insertWord()
  {
        System.out.print("Word to insert: ");
      String insertMe = input.nextLine();

      filter.insert(insertMe);
      System.out.println(insertMe + " added successfully!");
  }

    private static void checkEmail()
  {
      // TODO Auto-generated method stub

  }



    private static void loadFilter()
    {
        //TODO
    }

    private static void  saveFilter()
    {
        //TODO
    }
}