/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package Parser;

import org.htmlparser.Tag;
import org.htmlparser.visitors.NodeVisitor;
import testapp.data.FrameItem;
import testapp.data.IframeItem;
import testapp.data.ImageItem;
import testapp.data.Item;
import testapp.data.LinkItem;
import testapp.data.ScriptItem;
import testapp.data.StyleItem;
import java.util.logging.*;

/**
 *
 * @author alex
 */
class Visitor extends NodeVisitor {

    private Item currentItem;

    public Visitor(Item initialItem) {
        currentItem = initialItem;
    }

    /// This methode will be called for every Tag found in the document
    @Override
    public void visitTag(Tag currentTag) {

        String tagName = currentTag.getTagName();


        /// Search for a link and create a link item
        String hrefAttribute = currentTag.getAttribute("HREF");
        if (hrefAttribute != null && hrefAttribute.length() > 0) {
            if (tagName.equals("A")) {
                LinkItem li = new LinkItem(hrefAttribute,currentItem);
                currentItem.add(li);
            }
        }

        /// Search for a source and create a specific item depending on the source type
        String srcAttribute = currentTag.getAttribute("SRC");
        if (srcAttribute != null && srcAttribute.length() > 0) {
            if (tagName.equals("IFRAME")) {
                IframeItem iframeItem;
                iframeItem = new IframeItem(srcAttribute,currentItem);

                //currentItem.add(iframeItem);
                startNewHtmlParser(iframeItem);
            } else if (tagName.equals("IMG")) {
                ImageItem ii = new ImageItem(srcAttribute,currentItem);
                currentItem.add(ii);
            } else if (tagName.equals("FRAME")) {
                FrameItem frameItem;
                frameItem = new FrameItem(srcAttribute,currentItem);
                currentItem.add(frameItem);
                startNewHtmlParser(frameItem);
            } else if (tagName.equals("SCRIPT")) {
                JavascriptParser javascriptParser = new JavascriptParser(currentItem);
                currentItem.add(javascriptParser.parse(srcAttribute));
            } else if (tagName.equals("STYLE")) {
                CssParser cssParser = new CssParser(currentItem);
                currentItem.add(cssParser.parse(srcAttribute));
            }
        } else {
            if (tagName.equals("STYLE")) {
                StyleItem styleItem = new StyleItem("",currentItem);
                currentItem.add(styleItem);
                CssParser cssParser = new CssParser(styleItem);
                cssParser.parseCode(currentTag.getText());
            }

            if (tagName.equals("SCRIPT")) {
                ScriptItem scriptItem = new ScriptItem("",currentItem);
                currentItem.add(scriptItem);
                JavascriptParser javascriptParser = new JavascriptParser(scriptItem);
                javascriptParser.parseCode(currentTag.getText(), this.currentItem.getUrl());
            }
        }


    }

    /// Start a new html parser for nested html pages
    private void startNewHtmlParser(Item currentItem) {
        ///restict the search dept of the html page to 10s external pages
        HtmlParser htmlParser = new HtmlParser();
        currentItem.urlToValidUrl(false);
        htmlParser.parse(currentItem);
    }
}