package eg.edu.alexu.csd.datastructure.hangman.cs28;

import java.util.Random;

import eg.edu.alexu.csd.datastructure.hangman.IHangman;

public class HangmanEngine implements IHangman {

    String[] words=new String[100];
    static String chosen;
    String current="-------------------------------------------------";
    static int MaxGuesses,wordsLen;

    @Override
    public void setDictionary(String[] words) {
            int i=0;
            while(i<words.length){
                this.words[i]=words[i];
                i++;
            }
            wordsLen=words.length;
    }

    @Override
    public String selectRandomSecretWord() {
        Random rnd=new Random();
        chosen=words[rnd.nextInt(wordsLen)];
        return chosen;
    }

    @Override
    public String guess(Character c) {
        if(c==null) return current.substring(0,chosen.length());

        char lower=Character.toLowerCase(c);
        char upper=Character.toUpperCase(c);
        int flag=0;

        for(int i=0;i<chosen.length();i++){
            if(chosen.charAt(i)==lower) {
                char[] temp = current.toCharArray();
                temp[i] = lower;
                current = String.valueOf(temp);
                flag=1;
            }
            if(chosen.charAt(i)==upper){
                char[] temp = current.toCharArray();
                temp[i] = upper;
                current = String.valueOf(temp);
                flag=1;
            }
        }
        if(flag==0) MaxGuesses--;
        if(MaxGuesses==0) return null;
        return current.substring(0,chosen.length());
    }

    @Override
    public void setMaxWrongGuesses(Integer max) {
        if(max==null) MaxGuesses=0;
        else MaxGuesses=max.hashCode();
    }

}