package frame.variant.translator;

import java.math.BigDecimal;
import java.util.Date;

import frame.util.Util;
import frame.variant.ValueType;
import frame.variant.Value;


public class BooleanTranslator extends ITranslator {

	@Override
	public String toString(Object value) throws Exception {
		if (value == null) {
			return null;
		}
		
		Boolean bool = (Boolean) value;
		return bool.toString();
	}

	@Override
	public String toSqlString(Object value) throws Exception {
		if (value == null) {
			return "null";
		}
		
		Boolean bool = (Boolean) value;
		
		if (bool) {
			return "T";
		}
		else {
			return "F";
		}
	}
	
	@Override
	public String toJSONString(Object value) throws Exception {
		if (value == null) {
			return "null";
		}
		
		Boolean bool = (Boolean) value;
		return bool.toString();
	}

	@Override
	public String toSchemaString(Object value) throws Exception {
		if (value == null) {
			return "";
		}
		
		Boolean bool = (Boolean) value;
		return bool.toString();
	}

	@Override
	public Integer toInteger(Object object) throws Exception {
		throw new Exception("can not translate boolean (" + object + ") to Integer");
	}

	@Override
	public Double toDouble(Object object) throws Exception {
		throw new Exception("can not translate boolean (" + object + ") to Double");
	}

	@Override
	public BigDecimal toBigDecimal(Object object) throws Exception {
		throw new Exception("can not translate boolean (" + object + ") to BigDecimal");
	}
	
	public Boolean toBoolean(Object object) throws Exception {
		return Boolean.valueOf(object.toString());
	}

	@Override
	public Date toDate(Object object) throws Exception {
		throw new Exception("can not translate boolean (" + object + ") to Date");
	}

	@Override
	public Object toTranslatorTypeValue(Object value) throws Exception {
		return (Boolean)value;
	}

	@Override
	public Object loadObjectFrom(String value) throws Exception {
		if (Util.isEmptyStr(value)) {
			return null;
		}
		
		value = value.toLowerCase();
		
		if ("t".equals(value)) {
			return true;
		}
		
		if ("true".equals(value)) {
			return true;
		}
		
		if ("y".equals(value)) {
			return true;
		}
		
		if ("yes".equals(value)) {
			return true;
		}
		
		return false;
	}
	
	@Override
	public Value loadVariantFrom(String value) throws Exception {
		Object object = loadObjectFrom(value);
		
		Value variant = new Value();
		variant.setData(object, ValueType.Boolean);
		
		return variant;
	}
	
	@Override
	public Value loadVariantFrom(String value, Object defaultValue) {
		try {
			return loadVariantFrom(value);
		}
		catch (Exception e) {
			Value variant = new Value();
			variant.setData(defaultValue, ValueType.Boolean);
			return variant;
		}
	}
	
	@Override
	public Class<?> getDataClass() {
		return Boolean.class;
	}
}