package foundation.action;

import java.util.Iterator;

import foundation.util.MapList;
import foundation.util.Util;

public class Events implements Iterable<String> {

	private MapList<String, String> items;
	
	public Events(String... codes) {
		items = new MapList<String, String>();
		
		for (String code: codes) {
			items.add(code, code);
		}
	}

	public static Events getInstance(String eventCodes) {
		if (Util.isEmpty(eventCodes)) {
			return null;
		}
		
		eventCodes = eventCodes.trim().replace("，", ",").replace(";", ",").replace("；", ",");
		String[] codes = eventCodes.split(",");
		
		Events result = new Events(codes);
		return result;
	}
	
	public void addOne(String event) {
		if (items.contains(event)) {
			return;
		}
		
		items.add(event, event);
	}
	
	public String get(int i) {
		return items.get(i);
	}

	public int size() {
		return items.size();
	}

	public boolean isEmpty() {
		return items.isEmpty();
	}

	public String getFirst() {
		if (items.isEmpty()) {
			return null;
		}
		
		return items.get(0);
	}
	
	@Override
	public Iterator<String> iterator() {
		return items.iterator();
	}

}