/** Name: dictionary->Hangman
    Description: Contains dictionary file related methods
    Programmer: Spencer R. Shimko
    Date: 03-7-2003
    Version: 0.01
**/

import java.io.*;
import java.util.*;

/** Class: dictionary
    Handles parsing and retrieving info from dictionary file
**/
public class dictionary {
    private LinkedList word_l=new LinkedList(); // Dictionary wordlist
    private int count=0; //Number of words in dictionary file
    private Random rand = new Random(); // Random number generator

     /** setDict: Test dictionary file and creates linklist of words
                  if it exists and passes validity checks
        Receives: String pointing to dictionary file
        Returns: True if dict. file passes verification
                 False if dict file fails verification
    **/   
    public boolean setDict(String dict_s){
            // setup dictionary file 
            File dict_f = new File(dict_s);
            BufferedReader dict_fs;
           
            // if the arg isn't a legit file...
	    if (! dict_f.isFile()){
		System.out.println("Dictionary must exist and be a valid file!");
                return false;
	    } // endif not file
	    
	    // create input filestream for reading
	    try{
		dict_fs = new BufferedReader(new FileReader(dict_f));
	    }
	    catch(IOException e){
		System.out.println("Error opening dictionary file!");
	        return false;
	    }

  	    // Get the word count and parse the string as an int           
	    try{
		count=Integer.parseInt(dict_fs.readLine());
	    }
	    catch(IOException e){
		System.out.println("Error getting dictionary word count!");
		return false;
	    }

	    //for loop assigns words to wordlist linkedlist
	    try{
		for (int x=0; x < count; x++){
		    // when we add it make it lowercase and trim whitespace
		    // just in case
		    word_l.add((dict_fs.readLine()).toLowerCase().trim());
		}
		return true; // the wordlist has been created sucessfully
	    }
	    catch(IOException e){
		System.out.println("Error reading in wordlist from dictionary!");
		return false;
	    }
    }// end setDict method
    
    /** getWord: gets random word from dictionary word list
        Receives: 
        Returns: Random word as string from word list
    **/
    public String getWord(){
	return (String) word_l.get(rand.nextInt(count));
    } // end getWord method

} // end dictionary class