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 ObjectTranslator extends ITranslator {
	
	private static IntegerTranslator integerTranslator;
	private static LongTranslator longTranslator;
	private static DoubleTranslator doubleTranslator;
	private static BigDecimalTranslator bigDecimalTranslator;
	private static StringTranslator stringTranslator;

	static {
		integerTranslator = new IntegerTranslator();
		longTranslator = new LongTranslator();
		doubleTranslator = new DoubleTranslator();
		bigDecimalTranslator = new BigDecimalTranslator();
		stringTranslator = new StringTranslator();
	}
	
	@Override
	public String toString(Object value) throws Exception {
		if (value == null) {
			return null;
		}
		
		if (value instanceof String) {
			return (String)value;
		}
		
		return value.toString();
	}
	
	@Override
	public String toSqlString(Object value) throws Exception {
		if (value == null) {
			return "null";
		}
		
		if (value instanceof String) {
			return "'" + value + "'";
		}
		
		if (value instanceof Date) {
			return "'" + value + "'";
		}		
		
		return value.toString();
	}

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

	@Override
	public Integer toInteger(Object value) throws Exception {
		if (value == null) {
			return null;
		}
		
		if (value instanceof Integer) {
			return (Integer)value;
		}
		
		if (value instanceof Double) {
			return ((Double)value).intValue();
		}
		
		if (value instanceof Float) {
			return ((Float)value).intValue();
		}
		
		if (value instanceof Long) {
			return ((Long)value).intValue();
		}
		
		if (value instanceof BigDecimal) {
			return ((BigDecimal)value).intValue();
		}
		
		if (value instanceof String) {
			return Integer.valueOf((String)value);
		}
		
		return Integer.valueOf(String.valueOf(value));
	}
	
	@Override
	public Double toDouble(Object value) throws Exception {
		if (value == null) {
			return null;
		}
		
		if (value instanceof Integer) {
			return (Double)value;
		}
		
		if (value instanceof Double) {
			return (Double)value;
		}
		
		if (value instanceof Float) {
			return (Double)value;
		}
		
		if (value instanceof Long) {
			return (Double)value;
		}
		
		if (value instanceof BigDecimal) {
			return ((BigDecimal)value).doubleValue();
		}
		
		if (value instanceof String) {
			return Double.valueOf((String)value);
		}
		
		return Double.valueOf(String.valueOf(value));

	}

	@Override
	public BigDecimal toBigDecimal(Object value) throws Exception {
		if (value == null) {
			return null;
		}
		
		if (value instanceof Integer) {
			return  BigDecimal.valueOf((Double)value); 
		}
		
		if (value instanceof Double) {
			return BigDecimal.valueOf((Double)value); 
		}
		
		if (value instanceof Float) {
			return BigDecimal.valueOf((Double)value); 
		}
		
		if (value instanceof Long) {
			return BigDecimal.valueOf((Double)value); 
		}
		
		if (value instanceof BigDecimal) {
			return (BigDecimal)value;
		}
		
		if (value instanceof String) {
			return BigDecimal.valueOf(Double.valueOf((String)value));
		}
		
		return BigDecimal.valueOf(Double.valueOf(String.valueOf(value)));
	}

	@Override
	public Boolean toBoolean(Object value) throws Exception {
		if (value == null) {
			return null;
		}
		
		if (value instanceof Integer) {
			return integerTranslator.toBoolean((Integer)value);
		}
		
		if (value instanceof Double) {
			return doubleTranslator.toBoolean((Double)value);
		}
		
		if (value instanceof Float) {
			return doubleTranslator.toBoolean((Float)value);
		}
		
		if (value instanceof Long) {
			return longTranslator.toBoolean((Long)value);
		}
		
		if (value instanceof BigDecimal) {
			return bigDecimalTranslator.toBoolean((BigDecimal)value);
		}
		
		if (value instanceof String) {
			return stringTranslator.toBoolean((String)value);
		}
		
		return stringTranslator.toBoolean(String.valueOf(value));
	}
	
	@Override
	public Date toDate(Object value) throws Exception {
		if (value == null) {
			return null;
		}
		
		if (value instanceof Integer) {
			return integerTranslator.toDate((Integer)value);
		}
		
		if (value instanceof Double) {
			return doubleTranslator.toDate((Double)value);
		}
		
		if (value instanceof Float) {
			return doubleTranslator.toDate((Double)value);
		}
		
		if (value instanceof Long) {
			return longTranslator.toDate((Long)value);
		}
		
		if (value instanceof BigDecimal) {
			return bigDecimalTranslator.toDate((BigDecimal)value);
		}
		
		if (value instanceof String) {
			return stringTranslator.toDate((String)value);
		}
		
		return stringTranslator.toDate(String.valueOf(value));
	}
	
	@Override
	public Object toTranslatorTypeValue(Object value) throws Exception {
		return value;
	}

	@Override
	public Object loadObjectFrom(String value) throws Exception {
		if (Util.isEmptyStr(value)) {
			return null;
		}
		
		return value;
	}

	@Override
	public Value loadVariantFrom(String value) throws Exception {
		Object object = loadObjectFrom(value);
		
		Value variant = new Value();
		variant.setData(object, ValueType.Void);
		
		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.Void);
			return variant;
		}
	}
	
	@Override
	public Class<?> getDataClass() {
		return Object.class;
	}
}