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/*
 * Licensed 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.
 *
 * Other licenses:
 * -----------------------------------------------------------------------------
 * Commercial licenses for this work are available. These replace the above
 * ASL 2.0 and offer limited warranties, support, maintenance, and commercial
 * database integrations.
 *
 * For more information, please visit: http://www.jooq.org/licenses
 *
 *
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 */
package org.jooq.impl;

import static org.jooq.impl.DSL.*;
import static org.jooq.impl.Internal.*;
import static org.jooq.impl.Keywords.*;
import static org.jooq.impl.Names.*;
import static org.jooq.impl.SQLDataType.*;
import static org.jooq.impl.Tools.*;
import static org.jooq.impl.Tools.BooleanDataKey.*;
import static org.jooq.impl.Tools.ExtendedDataKey.*;
import static org.jooq.impl.Tools.SimpleDataKey.*;
import static org.jooq.SQLDialect.*;

import org.jooq.*;
import org.jooq.Function1;
import org.jooq.Record;
import org.jooq.conf.*;
import org.jooq.tools.*;

import java.util.*;
import java.util.function.*;
import java.util.stream.*;


/**
 * The WIDTH BUCKET statement.
 */
@SuppressWarnings({ "rawtypes", "unchecked", "unused" })
final class WidthBucket
extends
    AbstractField
implements
    QOM.WidthBucket
{

    final Field       field;
    final Field       low;
    final Field       high;
    final Field buckets;

    WidthBucket(
        Field field,
        Field low,
        Field high,
        Field buckets
    ) {
        super(
            N_WIDTH_BUCKET,
            allNotNull((DataType) dataType(INTEGER, field, false), field, low, high, buckets)
        );

        this.field = nullSafeNotNull(field, INTEGER);
        this.low = nullSafeNotNull(low, INTEGER);
        this.high = nullSafeNotNull(high, INTEGER);
        this.buckets = nullSafeNotNull(buckets, INTEGER);
    }

    // -------------------------------------------------------------------------
    // XXX: QueryPart API
    // -------------------------------------------------------------------------



    @Override
    public void accept(Context ctx) {
        switch (ctx.family()) {





            case POSTGRES:
            case YUGABYTEDB:
                ctx.visit(N_WIDTH_BUCKET).sql('(').visit(field).sql(", ").visit(low).sql(", ").visit(high).sql(", ").visit(buckets).sql(')');
                break;

            default:
                ctx.visit(
                    DSL.when(field.lt(low), zero())
                       .when(field.ge(high), iadd(buckets, one()))
                       .otherwise((Field) iadd(
                           DSL.floor(idiv(
                               imul(isub(field, low), buckets),
                               isub(high, low)
                           )),
                           one()
                       ))
                );
                break;
        }
    }


















    // -------------------------------------------------------------------------
    // XXX: Query Object Model
    // -------------------------------------------------------------------------

    @Override
    public final Field $field() {
        return field;
    }

    @Override
    public final Field $low() {
        return low;
    }

    @Override
    public final Field $high() {
        return high;
    }

    @Override
    public final Field $buckets() {
        return buckets;
    }

    @Override
    public final QOM.WidthBucket $field(Field newValue) {
        return $constructor().apply(newValue, $low(), $high(), $buckets());
    }

    @Override
    public final QOM.WidthBucket $low(Field newValue) {
        return $constructor().apply($field(), newValue, $high(), $buckets());
    }

    @Override
    public final QOM.WidthBucket $high(Field newValue) {
        return $constructor().apply($field(), $low(), newValue, $buckets());
    }

    @Override
    public final QOM.WidthBucket $buckets(Field newValue) {
        return $constructor().apply($field(), $low(), $high(), newValue);
    }

    public final Function4, ? super Field, ? super Field, ? super Field, ? extends QOM.WidthBucket> $constructor() {
        return (a1, a2, a3, a4) -> new WidthBucket<>(a1, a2, a3, a4);
    }




























    // -------------------------------------------------------------------------
    // XXX: The Object API
    // -------------------------------------------------------------------------

    @Override
    public boolean equals(Object that) {
        if (that instanceof QOM.WidthBucket o) {
            return
                StringUtils.equals($field(), o.$field()) &&
                StringUtils.equals($low(), o.$low()) &&
                StringUtils.equals($high(), o.$high()) &&
                StringUtils.equals($buckets(), o.$buckets())
            ;
        }
        else
            return super.equals(that);
    }
}