/*
 * Copyright 2004-2013 ICEsoft Technologies Canada Corp.
 *
 * 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.icefaces.samples.showcase.example.ace.file;

import org.icefaces.application.PortableRenderer;
import org.icefaces.application.PushOptions;
import org.icefaces.application.PushRenderer;
import org.icefaces.impl.event.BridgeSetup;
import org.icefaces.samples.showcase.dataGenerators.ImageSet.ImageInfo;
import org.icefaces.samples.showcase.metadata.annotation.*;
import org.icefaces.samples.showcase.metadata.context.ComponentExampleImpl;
import org.icefaces.ace.component.fileentry.*;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.faces.bean.CustomScoped;
import javax.faces.bean.ManagedBean;
import javax.faces.context.FacesContext;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.PreRenderViewEvent;
import javax.faces.event.SystemEvent;
import javax.faces.event.SystemEventListener;
import java.io.File;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

import org.icefaces.samples.showcase.dataGenerators.ImageSet;
import org.icefaces.util.EnvUtils;
import org.icefaces.util.JavaScriptRunner;

@ComponentExample(
        title = "example.ace.fileentry.title",
        description = "example.ace.fileentry.description",
        example = "/resources/examples/ace/fileentry/fileentry.xhtml"
)
@ExampleResources(
        resources ={
            // xhtml
            @ExampleResource(type = ResourceType.xhtml,
                    title="FileEntry.xhtml",
                    resource = "/resources/examples/ace/"+
                               "fileentry/fileentry.xhtml"),
            // Java Source
            @ExampleResource(type = ResourceType.java,
                    title="FileEntryBean.java",
                    resource = "/WEB-INF/classes/org/icefaces/samples/"+
                               "showcase/example/ace/file/FileEntryBean.java")
        }
)
@Menu(
	title = "menu.ace.fileentry.subMenu.title",
	menuLinks = {
                    @MenuLink(title = "menu.ace.fileentry.subMenu.main", isDefault = true, exampleBeanName = FileEntryBean.BEAN_NAME), 
                    @MenuLink(title = "menu.ace.fileentry.subMenu.listener", exampleBeanName = FileEntryListenerBean.BEAN_NAME),     
                    @MenuLink(title = "menu.ace.fileentry.subMenu.validation",exampleBeanName = FileEntryValidationOptionsBean.BEAN_NAME),
                    @MenuLink(title = "menu.ace.fileentry.subMenu.callback",exampleBeanName = FileEntryCallbackBean.BEAN_NAME)
})
@ManagedBean(name= FileEntryBean.BEAN_NAME)
@CustomScoped(value = "#{window}")
public class FileEntryBean extends ComponentExampleImpl<FileEntryBean> implements Serializable
    /*vvv*/
    ,SystemEventListener
    /*^^^*/
{

    public static final String BEAN_NAME = "fileEntry";
    private List<String> fileData;
    private ImageSet.ImageInfo arrowImage;

    /*vvv*/
    private String groupName;
    private boolean nextServerPushUpdatePage;
    private boolean ieLargeFileUpdateRendered = false;
    /*^^^*/

    public FileEntryBean()  
    {
        super(FileEntryBean.class);
        arrowImage = ImageSet.getImage(ImageSet.ImageSelect.FORWARD_ARROW);

        /*vvv*/
        FacesContext.getCurrentInstance().getApplication().subscribeToEvent(PreRenderViewEvent.class, null, this);
        /*^^^*/
    }

    @PostConstruct
    public void initMetaData() {
        super.initMetaData();
    }

    @PreDestroy
    public void windowDestroy() {
        //System.out.println("FileEntryBean.windowDestroy  this: " + this);
    }

    public void sampleListener(FileEntryEvent e)
    {
        FileEntry fe = (FileEntry)e.getComponent();
        FileEntryResults results = fe.getResults();
        File parent = null;

        fileData = new ArrayList<String>();

    //get data About File
    
        for (FileEntryResults.FileInfo i : results.getFiles()) 
        {
            fileData.add("File Name: " + i.getFileName());

            if (i.isSaved()) {
                fileData.add("File Size: " + i.getSize() + " bytes");

                File file = i.getFile();
                if (file != null) {
                    parent = file.getParentFile();
                }
            } else {
                fileData.add("File was not saved because: " +
                    i.getStatus().getFacesMessage(
                        FacesContext.getCurrentInstance(),
                        fe, i).getSummary());
            }
        }

        if (parent != null) {
            long dirSize = 0;
            int fileCount = 0;
            for (File file : parent.listFiles()) {
                fileCount++;
                dirSize += file.length();
            }
            fileData.add("Total Files In Upload Directory: " + fileCount);
            fileData.add("Total Size of Files In Directory: " + dirSize + " bytes");
        }

        //System.out.println("FileEntryBean.sampleListener()  " + fileData + "  this: " + this);

        /*vvv*/
        if (groupName != null) {
            nextServerPushUpdatePage = true;

            final PortableRenderer portable = PushRenderer.getPortableRenderer();
            ScheduledThreadPoolExecutor executor = new ScheduledThreadPoolExecutor(1);
            executor.schedule(new Runnable() {
                public void run() {
                    try {
                        HashMap<String, Object> options = new HashMap<String, Object>(1);
                        options.put("ieLargeFileUpdate_pushed", "true");
                        portable.render(groupName, new PushOptions(options));
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            }, 10, TimeUnit.SECONDS);
            executor.shutdown();

            JavaScriptRunner.runScript(FacesContext.getCurrentInstance(),
                "ice.ser(null, 'ieLargeFileUpdateForm:ieLargeFileUpdateButton', function(parameter){parameter('ieLargeFileUpdate_ranPosted','true');});");
        }
        /*^^^*/
    }

    /*vvv*/
    public void ieLargeFileUpdate() {
        //System.out.println("FileEntryBean.ieLargeFileUpdate()");
        if (FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().containsKey("ieLargeFileUpdate_ranPosted")) {
            nextServerPushUpdatePage = false;
            //System.out.println("FileEntryBean.ieLargeFileUpdate()  nextServerPushUpdatePage = false");
        }
    }

    public boolean isIeLargeFileUpdateRendered() {
        return ieLargeFileUpdateRendered;
    }

    public void processEvent(SystemEvent event) throws AbortProcessingException {
        //System.out.println("FileEntryBean.processEvent()  event: " + event);

        FacesContext facesContext = FacesContext.getCurrentInstance();
        if (groupName == null) {
            groupName = "ieLargeFileUpdateGroup_" + BridgeSetup.getViewID(facesContext.getExternalContext());
            PushRenderer.addCurrentView(groupName);
            //System.out.println("FileEntryBean.processEvent()    Setup push rendering");
        } else if (nextServerPushUpdatePage && EnvUtils.isPushRequest(facesContext)) {
            ieLargeFileUpdateRendered = !ieLargeFileUpdateRendered;
            nextServerPushUpdatePage = false;
            //System.out.println("FileEntryBean.processEvent()    Flipped rendered");
        }
    }

    public boolean isListenerForSource(Object source) {
        return true;
    }
    /*^^^*/

    public List getFileData() {
        return fileData;
    }

    public ImageInfo getArrowImage() {
        return arrowImage;
    }

    public void setArrowImage(ImageInfo arrowImage) {
        this.arrowImage = arrowImage;
    }
}