/**
 *
 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either 
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public 
 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 * 
 **/
package lucee.runtime.tag;

import java.io.IOException;

import lucee.runtime.coder.Base64Coder;
import lucee.runtime.exp.PageException;
import lucee.runtime.ext.tag.BodyTagImpl;
import lucee.runtime.listener.ApplicationContext;
import lucee.runtime.op.Caster;
import lucee.runtime.security.Credential;
import lucee.runtime.type.Array;
import lucee.runtime.type.Collection.Key;
import lucee.runtime.type.KeyImpl;
import lucee.runtime.type.Struct;
import lucee.runtime.type.StructImpl;
import lucee.runtime.type.util.KeyConstants;
import lucee.runtime.type.util.ListUtil;

/**
 * 
 */
public final class Login extends BodyTagImpl {
    
    private static final Key CFLOGIN = KeyImpl.intern("cflogin");
	private int idletimeout=1800;
    private String applicationtoken;
    private String cookiedomain;
    
    @Override
    public void release() {
        super.release();
        idletimeout=1800;
        applicationtoken=null;
        cookiedomain=null;
    }
    
    /**
     * @param applicationtoken The applicationtoken to set.
     */
    public void setApplicationtoken(String applicationtoken) {
        this.applicationtoken = applicationtoken;
    }
    /**
     * @param cookiedomain The cookiedomain to set.
     */
    public void setCookiedomain(String cookiedomain) {
        this.cookiedomain = cookiedomain;
    }
    /**
     * @param idletimeout The idletimout to set.
     */
    public void setIdletimeout(double idletimeout) {
        this.idletimeout = (int) idletimeout;
    }
    

    @Override
    public int doStartTag() throws PageException  {
    	
    	ApplicationContext ac=pageContext.getApplicationContext();
    	ac.setSecuritySettings(applicationtoken,cookiedomain,idletimeout);
    	
        Credential remoteUser = pageContext.getRemoteUser();
        if(remoteUser==null) {
            
            // Form
            Object name=pageContext.formScope().get("j_username",null);
            Object password=pageContext.formScope().get("j_password",null);
            if(name!=null) {
                setCFLogin(name,password);
                return EVAL_BODY_INCLUDE;
            }
            // Header
            String strAuth = pageContext. getHttpServletRequest().getHeader("authorization");
            if(strAuth!=null) {
                int pos=strAuth.indexOf(' ');
                if(pos!=-1) {
                    String format=strAuth.substring(0,pos).toLowerCase();
                    if(format.equals("basic")) {
                        String encoded=strAuth.substring(pos+1);
                        String dec;
                        try {
							dec=Base64Coder.decodeToString(encoded,"UTF-8");
						} catch (IOException e) {
							throw Caster.toPageException(e);
						}
                        
                        //print.ln("encoded:"+encoded);
                        //print.ln("decoded:"+Base64Util.decodeBase64(encoded));
                        Array arr=ListUtil.listToArray(dec,":");
                        if(arr.size()<3) {
                            if(arr.size()==1) setCFLogin(arr.get(1,null),"");
                            else setCFLogin(arr.get(1,null),arr.get(2,null));
                        }
                    }
                    
                }
            }
            return EVAL_BODY_INCLUDE;
        }
        return SKIP_BODY;
    }
    
    /**
     * @param username
     * @param password
     */
    private void setCFLogin(Object username, Object password) {
        if(username==null) return;
        if(password==null) password="";
        
        Struct sct=new StructImpl();
        sct.setEL(KeyConstants._name,username);
        sct.setEL(KeyConstants._password,password);
        pageContext.undefinedScope().setEL(CFLOGIN,sct);
    }

    @Override
    public int doEndTag() {
        pageContext.undefinedScope().removeEL(CFLOGIN);
        return EVAL_PAGE;
    }

	public static String getApplicationName(ApplicationContext appContext) {
		return "cfauthorization_"+appContext.getSecurityApplicationToken();
	}

	public static String getCookieDomain(ApplicationContext appContext) {
		return appContext.getSecurityCookieDomain();
	}

	public static int getIdleTimeout(ApplicationContext appContext) {
		return appContext.getSecurityIdleTimeout();
	}
}