package org.gcube.application.framework.core.security;


import javax.security.auth.login.AccountExpiredException;
import javax.security.auth.login.CredentialExpiredException;
import javax.security.auth.login.FailedLoginException;
import javax.security.auth.login.LoginContext;
import javax.security.auth.login.LoginException;

import org.gcube.application.framework.core.util.UserCredential;
import org.gcube.vomanagement.vomsapi.ExtendedVOMSAdmin;
import org.gcube.vomanagement.vomsapi.VOMSAdmin;
import org.gridforum.jgss.ExtendedGSSCredential;




public class LDAPAuthenticationModule {
	
	public static String LDAP_HOST = "LDAP_HOST";
	public static String BASE_DN = "BASE_DN";
	
	
	private String contextName = "Gridsphere";
	//private String contextName = "AslLoginConf";
	
	public LDAPAuthenticationModule () {
		return;
	}
	
	
	
	public boolean checkAuthentication(String username, String password) throws Exception {

        System.out.println("beginning authentication for " + username);
        System.out.println("I am in ASL");


        LoginContext loginContext;

        // Create the LoginContext
        try {
            loginContext = new LoginContext(contextName, new JaasCallbackHandler(username, password));
        } catch (SecurityException e) {
        	e.printStackTrace();
        	// Check user's credential
        	ExtendedGSSCredential cred = UserCredential.getPlainCredential(username, password);
        	
           System.out.println("Getting credential from VOMS");
        	if (cred == null) {
        		System.out.println("The credential does NOT exist");
        		throw new Exception("key4", e);
        	} else {
        		System.out.println("The credential is OK!!!!!!!!!!!!");
        		return true;
        	}
            
        } catch (LoginException e) {
        	e.printStackTrace();
        	// Check user's credential
        	ExtendedGSSCredential cred = UserCredential.getPlainCredential(username, password);
        	
           System.out.println("Getting credential from VOMS");
        	if (cred == null) {
        		System.out.println("The credential does NOT exist");
        		throw new Exception("key4", e);
        	} else {
        		System.out.println("The credential is OK!!!!!!!!!!!!");
        		return true;
        	}
           
        }

        // Attempt login
        try {
            loginContext.login();
        } catch (FailedLoginException e) {
        	// Check user's credential
        	ExtendedGSSCredential cred = UserCredential.getPlainCredential(username, password);
        	
           // throw new Exception("key4", e);
        	if (cred == null) {
	        	e.printStackTrace();
	        	System.out.println("The credential is NULL!!!!!!!!!!!!");
	        	return false;
        	} else {
        		System.out.println("The credential is OK!!!!!!!!!!!!");
        		return true;
        	}
        } catch (AccountExpiredException e) {
        	// Check user's credential
        	ExtendedGSSCredential cred = UserCredential.getPlainCredential(username, password);
        	
           // throw new Exception("key4", e);
        	if (cred == null) {
	        	e.printStackTrace();
	        	System.out.println("The credential is NULL!!!!!!!!!!!!");
	        	return false;
        	} else {
        		System.out.println("The credential is OK!!!!!!!!!!!!");
        		return true;
        	}
        } catch (CredentialExpiredException e) {
        	// Check user's credential
        	ExtendedGSSCredential cred = UserCredential.getPlainCredential(username, password);
        	
           // throw new Exception("key4", e);
        	if (cred == null) {
	        	e.printStackTrace();
	        	System.out.println("The credential is NULL!!!!!!!!!!!!");
	        	return false;
        	} else {
        		System.out.println("The credential is OK!!!!!!!!!!!!");
        		return true;
        	}
        } catch (Exception e) {
        	// Check user's credential
        	ExtendedGSSCredential cred = UserCredential.getPlainCredential(username, password);
        	
           // throw new Exception("key4", e);
        	if (cred == null) {
	        	e.printStackTrace();
	        	System.out.println("The credential is NULL!!!!!!!!!!!!");
	        	return false;
        	} else {
        		System.out.println("The credential is OK!!!!!!!!!!!!");
        		return true;
        	}
        }
        System.out.println("ASL returning value true");
        return true;
        
     // Check user's credential
//    	ExtendedGSSCredential cred = UserCredential.getPlainCredential(username, password);
//    	
//       System.out.println("Getting credential from VOMS");
//    	if (cred == null) {
//    		System.out.println("The credential does NOT exist");
//        	return false;
//    	} else {
//    		System.out.println("The credential is OK!!!!!!!!!!!!");
//    		return true;
//    	}

    }
	

}