/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.vxquery.runtime.functions.arithmetic;

import java.io.DataOutput;
import java.io.IOException;

import org.apache.vxquery.context.DynamicContext;
import org.apache.vxquery.datamodel.accessors.atomic.XSDatePointable;
import org.apache.vxquery.datamodel.accessors.atomic.XSDateTimePointable;
import org.apache.vxquery.datamodel.accessors.atomic.XSDecimalPointable;
import org.apache.vxquery.datamodel.accessors.atomic.XSTimePointable;
import org.apache.vxquery.datamodel.values.ValueTag;
import org.apache.vxquery.exceptions.ErrorCode;
import org.apache.vxquery.exceptions.SystemException;

import edu.uci.ics.hyracks.data.std.primitive.DoublePointable;
import edu.uci.ics.hyracks.data.std.primitive.FloatPointable;
import edu.uci.ics.hyracks.data.std.primitive.IntegerPointable;
import edu.uci.ics.hyracks.data.std.primitive.LongPointable;
import edu.uci.ics.hyracks.data.std.util.ArrayBackedValueStorage;

public class MultiplyOperation extends AbstractArithmeticOperation {
    protected final ArrayBackedValueStorage abvsInner = new ArrayBackedValueStorage();
    private XSDecimalPointable decp1 = (XSDecimalPointable) XSDecimalPointable.FACTORY.createPointable();
    private XSDecimalPointable decp2 = (XSDecimalPointable) XSDecimalPointable.FACTORY.createPointable();

    @Override
    public void operateDateDate(XSDatePointable datep, XSDatePointable datep2, DynamicContext dCtx, DataOutput dOut)
            throws SystemException, IOException {
        throw new SystemException(ErrorCode.XPTY0004);
    }

    @Override
    public void operateDateDTDuration(XSDatePointable datep, LongPointable longp, DataOutput dOut)
            throws SystemException, IOException {
        throw new SystemException(ErrorCode.XPTY0004);
    }

    @Override
    public void operateDatetimeDatetime(XSDateTimePointable datetimep, XSDateTimePointable datetimep2,
            DynamicContext dCtx, DataOutput dOut) throws SystemException, IOException {
        throw new SystemException(ErrorCode.XPTY0004);
    }

    @Override
    public void operateDatetimeDTDuration(XSDateTimePointable datetimep, LongPointable longp, DataOutput dOut)
            throws SystemException, IOException {
        throw new SystemException(ErrorCode.XPTY0004);
    }

    @Override
    public void operateDatetimeYMDuration(XSDateTimePointable datetimep, IntegerPointable intp, DataOutput dOut)
            throws SystemException, IOException {
        throw new SystemException(ErrorCode.XPTY0004);
    }

    @Override
    public void operateDateYMDuration(XSDatePointable datep, IntegerPointable intp, DataOutput dOut)
            throws SystemException, IOException {
        throw new SystemException(ErrorCode.XPTY0004);
    }

    @Override
    public void operateDecimalDecimal(XSDecimalPointable decp1, XSDecimalPointable decp2, DataOutput dOut)
            throws SystemException, IOException {
        long value1 = decp1.getDecimalValue();
        long value2 = decp2.getDecimalValue();
        byte place1 = decp1.getDecimalPlace();
        byte place2 = decp2.getDecimalPlace();
        if (value2 != 0 && Math.abs(value1) > Long.MAX_VALUE / Math.abs(value2)) {
            throw new SystemException(ErrorCode.XPDY0002);
        }
        value1 *= value2;
        place1 += place2;
        dOut.write(ValueTag.XS_DECIMAL_TAG);
        dOut.writeByte(place1);
        dOut.writeLong(value1);
    }

    @Override
    public void operateDecimalDouble(XSDecimalPointable decp1, DoublePointable doublep2, DataOutput dOut)
            throws SystemException, IOException {
        double value = decp1.doubleValue();
        value *= doublep2.doubleValue();
        dOut.write(ValueTag.XS_DOUBLE_TAG);
        dOut.writeDouble(value);
    }

    @Override
    public void operateDecimalDTDuration(XSDecimalPointable decp, LongPointable longp, DataOutput dOut)
            throws SystemException, IOException {
        long value = operateLongDecimal(longp.longValue(), decp);
        dOut.write(ValueTag.XS_DAY_TIME_DURATION_TAG);
        dOut.writeLong(value);
    }

    @Override
    public void operateDecimalFloat(XSDecimalPointable decp, FloatPointable floatp, DataOutput dOut)
            throws SystemException, IOException {
        float value = decp.floatValue();
        value *= floatp.floatValue();
        dOut.write(ValueTag.XS_FLOAT_TAG);
        dOut.writeFloat(value);
    }

    @Override
    public void operateDecimalInteger(XSDecimalPointable decp1, LongPointable longp2, DataOutput dOut)
            throws SystemException, IOException {
        abvsInner.reset();
        decp2.set(abvsInner.getByteArray(), abvsInner.getStartOffset(), XSDecimalPointable.TYPE_TRAITS.getFixedLength());
        decp2.setDecimal(longp2.getLong(), (byte) 0);
        operateDecimalDecimal(decp1, decp2, dOut);
    }

    @Override
    public void operateDecimalYMDuration(XSDecimalPointable decp1, IntegerPointable intp, DataOutput dOut)
            throws SystemException, IOException {
        int value = (int) operateLongDecimal(intp.intValue(), decp1);
        dOut.write(ValueTag.XS_YEAR_MONTH_DURATION_TAG);
        dOut.writeInt(value);
    }

    @Override
    public void operateDoubleDecimal(DoublePointable doublep, XSDecimalPointable decp, DataOutput dOut)
            throws SystemException, IOException {
        operateDecimalDouble(decp, doublep, dOut);
    }

    @Override
    public void operateDoubleDouble(DoublePointable doublep, DoublePointable doublep2, DataOutput dOut)
            throws SystemException, IOException {
        double value = doublep.doubleValue();
        value *= doublep2.doubleValue();
        dOut.write(ValueTag.XS_DOUBLE_TAG);
        dOut.writeDouble(value);
    }

    @Override
    public void operateDoubleDTDuration(DoublePointable doublep, LongPointable longp, DataOutput dOut)
            throws SystemException, IOException {
        operateDTDurationDouble(longp, doublep, dOut);
    }

    @Override
    public void operateDoubleFloat(DoublePointable doublep, FloatPointable floatp, DataOutput dOut)
            throws SystemException, IOException {
        double value = doublep.doubleValue();
        value *= floatp.doubleValue();
        dOut.write(ValueTag.XS_DOUBLE_TAG);
        dOut.writeDouble(value);
    }

    @Override
    public void operateDoubleInteger(DoublePointable doublep, LongPointable longp, DataOutput dOut)
            throws SystemException, IOException {
        double value = doublep.doubleValue();
        value *= longp.doubleValue();
        dOut.write(ValueTag.XS_DOUBLE_TAG);
        dOut.writeDouble(value);
    }

    @Override
    public void operateDoubleYMDuration(DoublePointable doublep, IntegerPointable intp, DataOutput dOut)
            throws SystemException, IOException {
        int value = doublep.intValue();
        value *= intp.intValue();
        dOut.write(ValueTag.XS_YEAR_MONTH_DURATION_TAG);
        dOut.writeInt(value);
    }

    @Override
    public void operateDTDurationDate(LongPointable longp, XSDatePointable datep, DataOutput dOut)
            throws SystemException, IOException {
        throw new SystemException(ErrorCode.XPTY0004);
    }

    @Override
    public void operateDTDurationDatetime(LongPointable longp, XSDateTimePointable datetimep, DataOutput dOut)
            throws SystemException, IOException {
        throw new SystemException(ErrorCode.XPTY0004);
    }

    @Override
    public void operateDTDurationDecimal(LongPointable longp, XSDecimalPointable decp, DataOutput dOut)
            throws SystemException, IOException {
        operateDecimalDTDuration(decp, longp, dOut);
    }

    @Override
    public void operateDTDurationDouble(LongPointable longp, DoublePointable doublep, DataOutput dOut)
            throws SystemException, IOException {
        long value = longp.longValue();
        value *= doublep.longValue();
        dOut.write(ValueTag.XS_DAY_TIME_DURATION_TAG);
        dOut.writeLong(value);
    }

    @Override
    public void operateDTDurationDTDuration(LongPointable longp1, LongPointable longp2, DataOutput dOut)
            throws SystemException, IOException {
        long value = longp1.longValue();
        value *= longp2.longValue();
        dOut.write(ValueTag.XS_DAY_TIME_DURATION_TAG);
        dOut.writeLong(value);
    }

    @Override
    public void operateDTDurationFloat(LongPointable longp, FloatPointable floatp, DataOutput dOut)
            throws SystemException, IOException {
        long value = longp.longValue();
        value *= floatp.longValue();
        dOut.write(ValueTag.XS_DAY_TIME_DURATION_TAG);
        dOut.writeLong(value);
    }

    @Override
    public void operateDTDurationInteger(LongPointable longp1, LongPointable longp2, DataOutput dOut)
            throws SystemException, IOException {
        long value = longp1.longValue();
        value *= longp2.longValue();
        dOut.write(ValueTag.XS_DAY_TIME_DURATION_TAG);
        dOut.writeLong(value);
    }

    @Override
    public void operateDTDurationTime(LongPointable longp, XSTimePointable timep, DataOutput dOut)
            throws SystemException, IOException {
        throw new SystemException(ErrorCode.XPTY0004);
    }

    @Override
    public void operateFloatDecimal(FloatPointable floatp, XSDecimalPointable decp, DataOutput dOut)
            throws SystemException, IOException {
        operateDecimalFloat(decp, floatp, dOut);
    }

    @Override
    public void operateFloatDouble(FloatPointable floatp, DoublePointable doublep, DataOutput dOut)
            throws SystemException, IOException {
        operateDoubleFloat(doublep, floatp, dOut);
    }

    @Override
    public void operateFloatDTDuration(FloatPointable floatp, LongPointable longp, DataOutput dOut)
            throws SystemException, IOException {
        operateDTDurationFloat(longp, floatp, dOut);
    }

    @Override
    public void operateFloatFloat(FloatPointable floatp, FloatPointable floatp2, DataOutput dOut)
            throws SystemException, IOException {
        float value = floatp.floatValue();
        value *= floatp2.floatValue();
        dOut.write(ValueTag.XS_FLOAT_TAG);
        dOut.writeFloat(value);
    }

    @Override
    public void operateFloatInteger(FloatPointable floatp, LongPointable longp, DataOutput dOut)
            throws SystemException, IOException {
        float value = floatp.floatValue();
        value *= longp.floatValue();
        dOut.write(ValueTag.XS_FLOAT_TAG);
        dOut.writeFloat(value);
    }

    @Override
    public void operateFloatYMDuration(FloatPointable floatp, IntegerPointable intp, DataOutput dOut)
            throws SystemException, IOException {
        operateYMDurationFloat(intp, floatp, dOut);
    }

    @Override
    public void operateIntegerDecimal(LongPointable longp, XSDecimalPointable decp, DataOutput dOut)
            throws SystemException, IOException {
        operateDecimalInteger(decp, longp, dOut);
    }

    @Override
    public void operateIntegerDouble(LongPointable longp, DoublePointable doublep, DataOutput dOut)
            throws SystemException, IOException {
        operateDoubleInteger(doublep, longp, dOut);
    }

    @Override
    public void operateIntegerDTDuration(LongPointable longp1, LongPointable longp2, DataOutput dOut)
            throws SystemException, IOException {
        operateDTDurationInteger(longp2, longp1, dOut);
    }

    @Override
    public void operateIntegerFloat(LongPointable longp, FloatPointable floatp, DataOutput dOut)
            throws SystemException, IOException {
        operateFloatInteger(floatp, longp, dOut);
    }

    @Override
    public void operateIntegerInteger(LongPointable longp, LongPointable longp2, DataOutput dOut)
            throws SystemException, IOException {
        long value = longp.getLong();
        value *= longp2.getLong();
        dOut.write(ValueTag.XS_INTEGER_TAG);
        dOut.writeLong(value);
    }

    @Override
    public void operateIntegerYMDuration(LongPointable longp, IntegerPointable intp, DataOutput dOut)
            throws SystemException, IOException {
        int value = longp.intValue();
        value *= intp.intValue();
        dOut.write(ValueTag.XS_YEAR_MONTH_DURATION_TAG);
        dOut.writeInt(value);
    }

    @Override
    public void operateTimeDTDuration(XSTimePointable timep, LongPointable longp, DataOutput dOut)
            throws SystemException, IOException {
        throw new SystemException(ErrorCode.XPTY0004);
    }

    @Override
    public void operateTimeTime(XSTimePointable timep, XSTimePointable timep2, DynamicContext dCtx, DataOutput dOut)
            throws SystemException, IOException {
        throw new SystemException(ErrorCode.XPTY0004);
    }

    @Override
    public void operateYMDurationDate(IntegerPointable intp, XSDatePointable datep, DataOutput dOut)
            throws SystemException, IOException {
        throw new SystemException(ErrorCode.XPTY0004);
    }

    @Override
    public void operateYMDurationDatetime(IntegerPointable intp, XSDateTimePointable datetimep, DataOutput dOut)
            throws SystemException, IOException {
        throw new SystemException(ErrorCode.XPTY0004);
    }

    @Override
    public void operateYMDurationDecimal(IntegerPointable intp, XSDecimalPointable decp, DataOutput dOut)
            throws SystemException, IOException {
        operateDecimalYMDuration(decp, intp, dOut);
    }

    @Override
    public void operateYMDurationDouble(IntegerPointable intp, DoublePointable doublep, DataOutput dOut)
            throws SystemException, IOException {
        operateDoubleYMDuration(doublep, intp, dOut);
    }

    @Override
    public void operateYMDurationFloat(IntegerPointable intp, FloatPointable floatp, DataOutput dOut)
            throws SystemException, IOException {
        operateFloatYMDuration(floatp, intp, dOut);
    }

    @Override
    public void operateYMDurationInteger(IntegerPointable intp, LongPointable longp, DataOutput dOut)
            throws SystemException, IOException {
        operateIntegerYMDuration(longp, intp, dOut);
    }

    @Override
    public void operateYMDurationYMDuration(IntegerPointable intp, IntegerPointable intp2, DataOutput dOut)
            throws SystemException, IOException {
        int value = intp.intValue();
        value *= intp2.intValue();
        dOut.write(ValueTag.XS_YEAR_MONTH_DURATION_TAG);
        dOut.writeInt(value);
    }

    public long operateLongDecimal(long longValue, XSDecimalPointable decp2) throws SystemException, IOException {
        // Prepare
        long value1 = longValue;
        long value2 = decp2.getDecimalValue();
        byte place1 = 0;
        byte place2 = decp2.getDecimalPlace();
        // Divide
        if (value2 != 0 && Math.abs(value1) > Long.MAX_VALUE / Math.abs(value2)) {
            throw new SystemException(ErrorCode.XPDY0002);
        }
        value1 *= value2;
        place1 += place2;
        // Save
        abvsInner.reset();
        decp1.set(abvsInner.getByteArray(), abvsInner.getStartOffset(), XSDecimalPointable.TYPE_TRAITS.getFixedLength());
        decp1.setDecimal(value1, place1);
        return decp1.longValue();
    }

}