import java.util.ArrayList;
import java.util.concurrent.ThreadLocalRandom;

public class ClippingCollection {
	public ArrayList<String> clippings;
	public ClippingCollection(String filename)
	{
		clippings = ClippingFileParser.parseClippingFile(filename);
	}

	public String getRandomClipping()
	{
		int randomIndex = ThreadLocalRandom.current().nextInt(0, this.clippings.size());
		return clippings.get(randomIndex);
	}

	public void filterList(String pattern){
		ArrayList<String> clippingsFiltered = new ArrayList<String>();
		for (String clipping : this.clippings)
		{
			if (clipping.contains(pattern))
			{
				clippingsFiltered.add(clipping);
			}
		}
		this.clippings = clippingsFiltered;
	}
}