package foundation.data.meta.field;

import java.util.Iterator;
import java.util.List;

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

import foundation.translator.ITranslator;
import foundation.translator.ValueType;
import foundation.util.MapList;


public class FieldsRuntime implements Iterable<Field> {

	protected static Logger logger;
	
	protected MapList<String, Field> fieldList;
	protected String[] names;
	protected String[] lowerNames;
	protected ITranslator[] valueTranslators;

	static {
		logger = LogManager.getLogger(FieldsRuntime.class);
	}

	public FieldsRuntime() {
		fieldList = new MapList<String, Field>();
	}
	
	public int getFieldCount() {
		return fieldList.size();
	}

	public Iterator<Field> iterator() {
		return fieldList.iterator();
	}

	public List<Field> getFields() {
		return fieldList.getItemList();
	}

	public Field get(String name) {
		if (name == null)
			return null;

		return fieldList.get(name);
	}
	
	public Field get(int idx) {
		return fieldList.get(idx);
	}
	
	public ValueType getValueType(int idx) {
		Field field = fieldList.get(idx);
		return field.getType();
	}

	public ValueType[] getValueTypes() {
		int size = fieldList.size();
		ValueType[] result = new ValueType[size];
		
		for (int i = 0; i < size; i++) {
			ValueType type = getValueType(i);
			result[i] = type;
		}
		
		return result;
	}

	public FieldWriter getWriter(int idx) {
		Field field = fieldList.get(idx);
		return field.getWriter();
	}
	
	public FieldWriter[] getWriters() {
		int size = fieldList.size();
		FieldWriter[] result = new FieldWriter[size];
		
		for (int i = 0; i < size; i++) {
			FieldWriter writer = getWriter(i);
			result[i] = writer;
		}
		
		return result;
	}

	public Integer getIndex(String fieldName) {
		if (fieldName == null) {
			return null;
		}
		
		Field field = fieldList.get(fieldName);
		
		if (field == null) {
			return null;
		}
		
		return field.getIndexNo();
	}

	public String[] getLowerNames() {
		return lowerNames;
	}

	public String[] getFieldNames() {
		return names;
	}
	
	public boolean contains(String name) {
		if (name == null) {
			return false;
		}
		
		return fieldList.contains(name);
	}

	public ITranslator getTranslator(int idx) {
		return valueTranslators[idx];
	}
	
	public ITranslator getValueTranslator(String name) {
		if (name == null) {
			return null;
		}
		
		Field field = fieldList.get(name);
		
		if (field == null) {
			return null;
		}
		
		return valueTranslators[field.getIndexNo()];
	}

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

	public MapList<String, Field> getFieldList() {
		return fieldList;
	}

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

}