package foundation.io.object;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import foundation.data.entity.Entity;

public class EntityValueMap implements Map<String, Object> {
	
	protected static Logger logger;
	private Entity entity;

	static {
	    logger = LogManager.getLogger(EntityValueMap.class);
	}
	
	public EntityValueMap(Entity entity) {
		this.entity = entity;
	}
	
	@Override
	public int size() {
		return entity.getFieldCount();
	}

	@Override
	public boolean isEmpty() {
		return entity.isEmpty();
	}

	@Override
	public boolean containsKey(Object key) {
		return entity.contains(String.valueOf(key));
	}

	@Override
	public boolean containsValue(Object value) {
		return true;
	}

	@Override
	public Object get(Object key) {
		if (key == null) {
			return null;
		}
		
		Object value = entity.getValue(String.valueOf(key));
		return value;
	}

	@Override
	public Object put(String key, Object value) {
		Object old = entity.getValue(key);
		entity.set(key, value);
		return old;
	}

	@Override
	public Object remove(Object key) {
		String name = String.valueOf(key);
		Object old = entity.getValue(name);
		entity.set(name, null);
		return old;
	}

	@Override
	public void putAll(Map<? extends String, ? extends Object> map) {
	}

	@Override
	public void clear() {
	}

	@Override
	public Set<String> keySet() {
		String[] names = entity.getFieldsMeta().getFieldNames();
		
		Set<String> result = new HashSet<String>();
		for (String name: names) {
			result.add(name);
		}
		
		return result;
	}

	@Override
	public Collection<Object> values() {
		return new ArrayList<Object>();
	}

	@Override
	public Set<Entry<String, Object>> entrySet() {
		return new HashSet<Map.Entry<String,Object>>();
	}

}