/*******************************************************************************
 * Copyright 2014 Federal Chancellery Austria
 * MOA-ID has been developed in a cooperation between BRZ, the Federal
 * Chancellery Austria - ICT staff unit, and Graz University of Technology.
 *
 * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
 * the European Commission - subsequent versions of the EUPL (the "Licence");
 * You may not use this work except in compliance with the Licence.
 * You may obtain a copy of the Licence at:
 * http://www.osor.eu/eupl/
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the Licence is distributed on an "AS IS" basis,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Licence for the specific language governing permissions and
 * limitations under the Licence.
 *
 * This product combines work with different licenses. See the "NOTICE" text
 * file for details on the various modules and licenses.
 * The "NOTICE" text file is part of the distribution. Any derivative works
 * that you distribute must include a readable copy of the "NOTICE" text file.
 *******************************************************************************/
package at.gv.egovernment.moa.id.configuration.validation;

import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.apache.log4j.Logger;

import at.gv.egovernment.moa.id.commons.validation.ValidationHelper;
import at.gv.egovernment.moa.id.configuration.data.FormularCustomization;
import at.gv.egovernment.moa.id.configuration.helper.LanguageHelper;
import at.gv.egovernment.moa.util.MiscUtil;

public class FormularCustomizationValitator {
	
	private static final Logger log = Logger.getLogger(FormularCustomizationValitator.class);
	
	public List<String> validate(FormularCustomization form, HttpServletRequest request) {
		
		List<String> errors = new ArrayList<String>();
		String check;
		
		if (form.isOnlyMandateAllowed() && !form.isShowMandateLoginButton()) {
			log.warn("OnlyMandateAllowed in combination with hidden MandateLoginCheckbox is not possible.");
			errors.add(LanguageHelper.getErrorString("validation.general.bkuselection.specialfeatures.combination", request));
		}
		
		check = form.getBackGroundColor();
		if (MiscUtil.isNotEmpty(check)) {
			if (!check.startsWith("#"))
				check = "#" + check;
			
			if (!ValidationHelper.isValidHexValue(check)) {
				log.warn("BKUSelectionBackGroundColor is not a valid hex value " + check);
				errors.add(LanguageHelper.getErrorString("validation.general.form.color.background", request));
			}
		}
		
		check = form.getFrontColor();
		if (MiscUtil.isNotEmpty(check)) {
			if (!check.startsWith("#"))
				check = "#" + check;
			
			if (!ValidationHelper.isValidHexValue(check)) {
				log.warn("BKUSelectionFrontColor is not a valid hex value " + check);
				errors.add(LanguageHelper.getErrorString("validation.general.form.color.front", request));
			}
		}
		
		check = form.getHeader_BackGroundColor();
		if (MiscUtil.isNotEmpty(check)) {
			if (!check.startsWith("#"))
				check = "#" + check;
			
			if (!ValidationHelper.isValidHexValue(check)) {
				log.warn("HeaderBackGroundColor is not a valid hex value " + check);
				errors.add(LanguageHelper.getErrorString("validation.general.form.header.color.back", request));
			}
		}
		
		check = form.getHeader_FrontColor();
		if (MiscUtil.isNotEmpty(check)) {
			if (!check.startsWith("#"))
				check = "#" + check;
			
			if (!ValidationHelper.isValidHexValue(check)) {
				log.warn("HeaderFrontColor is not a valid hex value " + check);
				errors.add(LanguageHelper.getErrorString("validation.general.form.header.color.front", request));
			}
		}
		
		check = form.getHeader_text();
		if (MiscUtil.isNotEmpty(check)) {			
			if (ValidationHelper.containsNotValidCharacter(check, false)) {
				log.warn("HeaderText contains potentail XSS characters: " + check);
				errors.add(LanguageHelper.getErrorString("validation.general.form.header.text", 
						new Object[] {ValidationHelper.getNotValidCharacter(false)}, request ));
			}
		}

		check = form.getButton_BackGroundColor();
		if (MiscUtil.isNotEmpty(check)) {
			if (!check.startsWith("#"))
				check = "#" + check;
			
			if (!ValidationHelper.isValidHexValue(check)) {
				log.warn("ButtonBackGroundColor is not a valid hex value " + check);
				errors.add(LanguageHelper.getErrorString("validation.general.form.button.color.back", request));
			}
		}
		
		check = form.getButton_BackGroundColorFocus();
		if (MiscUtil.isNotEmpty(check)) {
			if (!check.startsWith("#"))
				check = "#" + check;
			
			if (!ValidationHelper.isValidHexValue(check)) {
				log.warn("ButtonBackGroundColorFocus is not a valid hex value " + check);
				errors.add(LanguageHelper.getErrorString("validation.general.form.button.color.back.focus", request));
			}
		}
		
		check = form.getButton_FrontColor();
		if (MiscUtil.isNotEmpty(check)) {
			if (!check.startsWith("#"))
				check = "#" + check;
			
			if (!ValidationHelper.isValidHexValue(check)) {
				log.warn("ButtonFrontColor is not a valid hex value " + check);
				errors.add(LanguageHelper.getErrorString("validation.general.form.button.color.front", request));
			}
		}
		
		check = form.getAppletRedirectTarget();
		if (MiscUtil.isNotEmpty(check)) {
			if (!FormularCustomization.appletRedirectTargetList.contains(check)) {
				log.warn("AppletRedirectTarget has not valid value " + check);
				errors.add(LanguageHelper.getErrorString("validation.general.form.appletredirecttarget", request));
			}
		}
		
		check = form.getFontType();
		if (MiscUtil.isNotEmpty(check)) {			
			if (ValidationHelper.containsNotValidCharacter(check, true)) {
				log.warn("FontType contains potentail XSS characters: " + check);
				errors.add(LanguageHelper.getErrorString("validation.general.form.fonttype", 
						new Object[] {ValidationHelper.getNotValidCharacter(true)}, request ));
			}
		}
		
		check = form.getApplet_height();
		if (MiscUtil.isNotEmpty(check)) {
			if (!ValidationHelper.validateNumber(check)) {
				log.warn("Applet height "+ check + " is no valid number");
				errors.add(LanguageHelper.getErrorString("validation.general.form.applet.height", 
						new Object[] {ValidationHelper.getNotValidCharacter(true)}, request ));
			}			
		}
		
		check = form.getApplet_width();
		if (MiscUtil.isNotEmpty(check)) {
			if (!ValidationHelper.validateNumber(check)) {
				log.warn("Applet width "+ check + " is no valid number");
				errors.add(LanguageHelper.getErrorString("validation.general.form.applet.width", 
						new Object[] {ValidationHelper.getNotValidCharacter(true)}, request ));
			}			
		}
		
		return errors;
		
	}
}