/*
 *  Copyright 2010 Anyware Services
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.ametys.web.workspace;

import java.io.IOException;
import java.util.Map;

import org.apache.avalon.framework.service.ServiceException;
import org.apache.avalon.framework.service.ServiceManager;
import org.apache.cocoon.ProcessingException;
import org.apache.cocoon.xml.AttributesImpl;
import org.apache.cocoon.xml.XMLUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.excalibur.source.Source;
import org.xml.sax.SAXException;

import org.ametys.runtime.config.Config;
import org.ametys.web.repository.site.Site;
import org.ametys.web.repository.site.SiteManager;
import org.ametys.web.repository.site.SiteType;
import org.ametys.web.repository.site.SiteTypesExtensionPoint;
import org.ametys.web.site.SiteColorsComponent;
import org.ametys.web.skin.SkinsManager;

/**
 * Generates the uitools factories definition using the associated components 
 */
public class WorkspaceGenerator extends org.ametys.plugins.core.ui.WorkspaceGenerator
{
    /** The site types manager */
    protected SiteTypesExtensionPoint _siteTypeExtensionPoint;
    /** The site manager */
    protected SiteManager _siteManager;
    /** The site */
    protected String _siteTypeName;
    /** The skins manager */
    protected SkinsManager _skinsManager;
    /** The site colors */
    protected SiteColorsComponent _siteColors;
    
    @Override
    public void service(ServiceManager smanager) throws ServiceException
    {
        super.service(smanager);
    
        _siteManager = (SiteManager) manager.lookup(SiteManager.ROLE);
        _siteTypeExtensionPoint = (SiteTypesExtensionPoint) manager.lookup(SiteTypesExtensionPoint.ROLE);
        _skinsManager = (SkinsManager) manager.lookup(SkinsManager.ROLE);
        _siteColors = (SiteColorsComponent) manager.lookup(SiteColorsComponent.ROLE);
    }
    
    @Override
    public void generate() throws IOException, SAXException, ProcessingException
    {
        String siteName = parameters.getParameter("site", null);
        
        Site site = _siteManager.getSite(siteName);
        if (site != null)
        {
            // Checks skin
            String skinId = site.getSkinId();
            if (!_skinsManager.getSkins().contains(skinId))
            {
                String sysadminMailTo = null;
                if (Config.getInstance() != null)
                {
                    sysadminMailTo = Config.getInstance().getValueAsString("smtp.mail.sysadminto");
                }
                throw new IllegalStateException("The site '" + siteName + "' is configured with the unexisting skin '" + skinId + "'. Please contact your system admistrator" 
                        + (StringUtils.isNotBlank(sysadminMailTo) ? " at " + sysadminMailTo + " " : " ") + "and ask him to fix this by copying this message.");
            }
            
            SiteType siteType = _siteTypeExtensionPoint.getExtension(site.getType());
            _siteTypeName = siteType != null ? siteType.getName() : null;
        }
        
        doGenerate(getContextualParameters());
    }
    
    @Override
    protected Map<String, Object> getContextualParameters()
    {
        Map<String, Object> contextParameters = super.getContextualParameters();
        
        String siteName = parameters.getParameter("site", null);
        contextParameters.put("siteName", siteName);

        return contextParameters;
    }
    
    
    @Override
    protected Source getRibbonConfiguration() throws IOException
    {
        if (_siteTypeName != null)
        {
            String mode = parameters.getParameter("mode", null);
            return _resolver.resolveURI("context://WEB-INF/param/cms-ribbon-" + (mode != null ? mode + "-" : "") + _siteTypeName + ".xml");
        }
        
        return super.getRibbonConfiguration();
    }
    
    @Override
    protected Source getUIToolsConfiguration() throws IOException
    {
        if (_siteTypeName != null)
        {
            String mode = parameters.getParameter("mode", null);
            return _resolver.resolveURI("context://WEB-INF/param/cms-uitools-" + (mode != null ? mode + "-" : "") + _siteTypeName + ".xml");
        }
        
        return super.getUIToolsConfiguration();
    }

    @Override
    protected void saxAdditionnalInfo(Map<String, Object> contextParameters) throws SAXException
    {
        super.saxAdditionnalInfo(contextParameters);
        
        String siteName = (String) contextParameters.get("siteName");
        Site site = _siteManager.getSite(siteName);

        _saxColorInformations(site);
        _saxGlyph(site);
    }
    
    private void _saxGlyph(Site site) throws SAXException
    {
        SiteType siteType = _siteTypeExtensionPoint.getExtension(site.getType());
        
        String iconGlyph = siteType.getIconGlyph();
        if (StringUtils.isNotBlank(iconGlyph))
        {
            XMLUtils.createElement(contentHandler, "site-glyph", iconGlyph);
        }
        
        String siteIcon = siteType.getSmallIcon();
        if (StringUtils.isNotBlank(siteIcon))
        {
            XMLUtils.createElement(contentHandler, "site-icon", siteIcon);
        }
    }

    private void _saxColorInformations(Site site) throws SAXException
    {
        String colorIndex = site.getColor();
        if (!_siteColors.getColors().containsKey(colorIndex))
        {
            colorIndex = _siteColors.getDefaultKey();
        }
        Map<String, String> colorInfos = _siteColors.getColors().get(colorIndex);
        if (colorInfos == null)
        {
            colorInfos = _siteColors.getColors().get(_siteColors.getDefaultKey());
        }
        
        AttributesImpl attrs = new AttributesImpl();
        for (String name : colorInfos.keySet())
        {
            attrs.addCDATAAttribute(name, colorInfos.get(name));
        }
        XMLUtils.createElement(contentHandler, "site-color", attrs);
    }
}