LepraLoginResponseParser.java

package org.koroed.lepra.content.parser;

import org.apache.commons.lang3.StringUtils;
import org.json.JSONArray;
import org.json.JSONObject;
import org.koroed.lepra.LepraException;
import org.koroed.lepra.content.LepraUser;
import org.koroed.lepra.login.LepraCaptchaRequired;
import org.koroed.lepra.login.LepraInvalidLoginPasswordException;
import org.koroed.lepra.login.LepraLoginException;

/**
 * Author: Nikita Koroed
 * E-mail: nikita@koroed.org
 * Date: 26.05.2014
 * Time: 11:37
 */
/**
 * Author: hexonxons.
 * E-mail: killgamesh666@gmail.com
 * Data: 28.08.2014
 */
public class LepraLoginResponseParser extends LepraContentParser<LepraUser>
{
    private static LepraLoginResponseParser sInstance   = null;
    private static Object sLock                         = new Object();
    
    public static LepraLoginResponseParser getInstance()
    {
        synchronized (sLock)
        {
            if (sInstance == null)
            {
                sInstance = new LepraLoginResponseParser();
            }
            
            return sInstance;
        }
    }
    
    private LepraLoginResponseParser(){}
    
    @Override
    protected synchronized LepraUser parseContent(String content) throws LepraException
    {
        if (StringUtils.isBlank(content) || "null".equalsIgnoreCase(content.trim()))
        {
            throw new LepraLoginException();
        }
        
        JSONObject obj = new JSONObject(content);
        String status = obj.getString("status");
        
        if (status == null || !"OK".equalsIgnoreCase(status))
        {
            JSONArray errors = obj.optJSONArray("errors");
            if(errors != null && errors.length() > 0)
            {
                for(int i = 0; i <errors.length(); i ++ )
                {
                    JSONObject error = errors.getJSONObject(i);
                    
                    if(error != null && StringUtils.equalsIgnoreCase(error.getString("code"), "invalid_password"))
                    {
                        throw new LepraInvalidLoginPasswordException();
                    }
                    
                    if(error != null && StringUtils.equalsIgnoreCase(error.getString("code"), "captcha_required"))
                    {
                        throw new LepraCaptchaRequired();
                    }
                }
            }
            throw new LepraLoginException();
        }
        
        JSONObject user = obj.getJSONObject("user");
        
        LepraUser leprauser = new LepraUser();
        leprauser.id = user.getInt("id");
        leprauser.login = user.getString("login");
        leprauser.gender = user.getString("gender");
        leprauser.karma = user.getInt("karma");
        
        return leprauser;
    }
}