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package Torello.HTML.NodeSearch.searchLoops;

import java.util.Vector;

import Torello.HTML.*;
import Torello.Java.LV;
import java.util.stream.IntStream;

public class TNRemove
{
    public static int nth
        (Vector<? extends HTMLNode> html, int nth, LV l, TC tagCriteria, String... htmlTags)
    {
        HTMLNode n;

        for (int i = l.start; i < l.end; i++)

            if (    ((n = html.elementAt(i)).isTagNode())       
                &&  (((TagNode) n).isTag(tagCriteria, htmlTags))
                &&  (--nth == 0)
            )
                { html.removeElementAt(i); return 1; }

        return 0;
    }

    public static int nthFromEnd
        (Vector<? extends HTMLNode> html, int nth, LV l, TC tagCriteria, String... htmlTags)
    {
        HTMLNode n;

        for (int i = l.end-1; i >= l.start; i--)

            if (    ((n = html.elementAt(i)).isTagNode())       
                &&  (((TagNode) n).isTag(tagCriteria, htmlTags))
                &&  (--nth == 0)
            )
                { html.removeElementAt(i); return 1; }

        return 0;
    }

    public static int all
        (Vector<? extends HTMLNode> html, LV l, TC tagCriteria, String... htmlTags)
    {
        Vector<TagNode>     ret = new Vector<>();
        IntStream.Builder   b   = IntStream.builder();
        HTMLNode            n;

        for (int i = l.start; i < l.end; i++)

            if ((n = html.elementAt(i)).isTagNode())
                if (((TagNode) n).isTag(tagCriteria, htmlTags))
                    b.accept(i);

        // Remove the nodes out of the original page.
        int[] removeArr = b.build().toArray();

        Util.removeNodesOPT(html, removeArr);

        return removeArr.length;
    }

    public static int allExcept
        (Vector<? extends HTMLNode> html, LV l, TC tagCriteria, String... htmlTags)
    {
        Vector<TagNode>     ret = new Vector<>();
        IntStream.Builder   b   = IntStream.builder();
        HTMLNode            n;

        for (int i = l.start; i < l.end; i++)

            if ((n = html.elementAt(i)).isTagNode())
                if (((TagNode) n).isTagExcept(tagCriteria, htmlTags))
                    b.accept(i);

        // Remove the nodes out of the original page.
        int[] removeArr = b.build().toArray();

        Util.removeNodesOPT(html, removeArr);

        return removeArr.length;
    }
}