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/*
 *    Copyright 2016-2024 the original author or authors.
 *
 *    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
 *
 *       https://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.mybatis.dynamic.sql.where.condition;

import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.function.Predicate;
import java.util.function.UnaryOperator;

import org.mybatis.dynamic.sql.AbstractListValueCondition;
import org.mybatis.dynamic.sql.render.RenderingContext;
import org.mybatis.dynamic.sql.util.StringUtilities;

public class IsInCaseInsensitive extends AbstractListValueCondition
        implements CaseInsensitiveVisitableCondition {
    private static final IsInCaseInsensitive EMPTY = new IsInCaseInsensitive(Collections.emptyList());

    public static IsInCaseInsensitive empty() {
        return EMPTY;
    }

    protected IsInCaseInsensitive(Collection values) {
        super(values);
    }

    @Override
    public boolean shouldRender(RenderingContext renderingContext) {
        return true;
    }

    @Override
    public String operator() {
        return "in"; //$NON-NLS-1$
    }

    @Override
    public IsInCaseInsensitive filter(Predicate predicate) {
        return filterSupport(predicate, IsInCaseInsensitive::new, this, IsInCaseInsensitive::empty);
    }

    /**
     * If not empty, apply the mapping to each value in the list return a new condition with the mapped values.
     *     Else return an empty condition (this).
     *
     * @param mapper a mapping function to apply to the values, if not empty
     * @return a new condition with mapped values if renderable, otherwise an empty condition
     */
    public IsInCaseInsensitive map(UnaryOperator mapper) {
        return mapSupport(mapper, IsInCaseInsensitive::new, IsInCaseInsensitive::empty);
    }

    public static IsInCaseInsensitive of(String... values) {
        return of(Arrays.asList(values));
    }

    public static IsInCaseInsensitive of(Collection values) {
        return new IsInCaseInsensitive(values).map(StringUtilities::safelyUpperCase);
    }
}