package com.infinite.focus.server.utils;

import java.util.Arrays;

public class MoodUpdateUtils {

	public static boolean containsMood(String mood, String text) {
    	
    	if(text.toLowerCase().trim().contains(mood.toLowerCase().trim())) {
    		
    		return true;
    		
    	} else {
    		
    		String[] words = text.split("\\s+");
    		
    		for(String s:words) {
    			
    			if(calculate(s.toLowerCase().trim(), mood.toLowerCase().trim()) < 2) {
    				
    				return true;
    				
    			}
    			
    		}

    		
    	}
    	
		return false;
    	
    	
    }
    
    public static int calculate(String x, String y) {
    	
        if (x.isEmpty()) {
        	
            return y.length();
            
        }
 
        if (y.isEmpty()) {
        	
            return x.length();
            
        } 
 
        int substitution = calculate(x.substring(1), y.substring(1)) 
         + costOfSubstitution(x.charAt(0), y.charAt(0));
        int insertion = calculate(x, y.substring(1)) + 1;
        int deletion = calculate(x.substring(1), y) + 1;
 
        return min(substitution, insertion, deletion);
    }
 
    public static int costOfSubstitution(char a, char b) {
        return a == b ? 0 : 1;
    }

    public static int min(int... numbers) {
    	
        return Arrays.stream(numbers)
          .min().orElse(Integer.MAX_VALUE);
    }    
}