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/*
 * Copyright (c) 2009-2016, Data Geekery GmbH (http://www.datageekery.com)
 * All rights reserved.
 *
 * 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
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 */

package org.jooq.impl;

import static java.util.Arrays.asList;
import static org.jooq.Clause.CONDITION;
import static org.jooq.Clause.CONDITION_BETWEEN;
import static org.jooq.Clause.CONDITION_BETWEEN_SYMMETRIC;
import static org.jooq.Clause.CONDITION_NOT_BETWEEN;
import static org.jooq.Clause.CONDITION_NOT_BETWEEN_SYMMETRIC;
// ...
// ...
import static org.jooq.SQLDialect.CUBRID;
// ...
import static org.jooq.SQLDialect.DERBY;
import static org.jooq.SQLDialect.FIREBIRD;
import static org.jooq.SQLDialect.H2;
// ...
// ...
import static org.jooq.SQLDialect.MARIADB;
import static org.jooq.SQLDialect.MYSQL;
// ...
// ...
import static org.jooq.SQLDialect.SQLITE;
// ...
// ...
// ...
import static org.jooq.impl.DSL.nullSafe;
import static org.jooq.impl.DSL.val;

import org.jooq.BetweenAndStep;
import org.jooq.Clause;
import org.jooq.Condition;
import org.jooq.Configuration;
import org.jooq.Context;
import org.jooq.Field;
import org.jooq.QueryPartInternal;

/**
 * @author Lukas Eder
 */
final class BetweenCondition extends AbstractCondition implements BetweenAndStep {

    private static final long     serialVersionUID              = -4666251100802237878L;
    private static final Clause[] CLAUSES_BETWEEN               = { CONDITION, CONDITION_BETWEEN };
    private static final Clause[] CLAUSES_BETWEEN_SYMMETRIC     = { CONDITION, CONDITION_BETWEEN_SYMMETRIC };
    private static final Clause[] CLAUSES_NOT_BETWEEN           = { CONDITION, CONDITION_NOT_BETWEEN };
    private static final Clause[] CLAUSES_NOT_BETWEEN_SYMMETRIC = { CONDITION, CONDITION_NOT_BETWEEN_SYMMETRIC };

    private final boolean         symmetric;
    private final boolean         not;
    private final Field        field;
    private final Field        minValue;
    private Field              maxValue;

    BetweenCondition(Field field, Field minValue, boolean not, boolean symmetric) {
        this.field = field;
        this.minValue = minValue;
        this.not = not;
        this.symmetric = symmetric;
    }

    @Override
    public final Condition and(T value) {
        return and(val(value, field.getDataType()));
    }

    @SuppressWarnings({ "rawtypes", "unchecked" })
    @Override
    public final Condition and(Field f) {
        if (maxValue == null) {
            this.maxValue = nullSafe(f, field.getDataType());
            return this;
        }
        else {
            return super.and(f);
        }
    }

    @Override
    public final void accept(Context ctx) {
        ctx.visit(delegate(ctx.configuration()));
    }

    @Override
    public final Clause[] clauses(Context ctx) {
        return null;
    }

    private final QueryPartInternal delegate(Configuration configuration) {
        if (symmetric && asList(CUBRID, DERBY, FIREBIRD, H2, MARIADB, MYSQL, SQLITE).contains(configuration.family())) {
            return not
                ? (QueryPartInternal) field.notBetween(minValue, maxValue).and(field.notBetween(maxValue, minValue))
                : (QueryPartInternal) field.between(minValue, maxValue).or(field.between(maxValue, minValue));
        }
        else {
            return new Native();
        }
    }

    private class Native extends AbstractQueryPart {

        /**
         * Generated UID
         */
        private static final long serialVersionUID = 2915703568738921575L;

        @Override
        public final void accept(Context ctx) {
                           ctx.visit(field);
            if (not)       ctx.sql(' ').keyword("not");
                           ctx.sql(' ').keyword("between");
            if (symmetric) ctx.sql(' ').keyword("symmetric");
                           ctx.sql(' ').visit(minValue);
                           ctx.sql(' ').keyword("and");
                           ctx.sql(' ').visit(maxValue);
        }

        @Override
        public final Clause[] clauses(Context ctx) {
            return not ? symmetric ? CLAUSES_NOT_BETWEEN_SYMMETRIC
                                   : CLAUSES_NOT_BETWEEN
                       : symmetric ? CLAUSES_BETWEEN_SYMMETRIC
                                   : CLAUSES_BETWEEN;
        }
    }
}