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/*
 * Copyright 2017-2020 original 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 io.micronaut.context.converters;

import io.micronaut.core.convert.ConversionContext;
import io.micronaut.core.convert.ConversionService;
import io.micronaut.core.convert.TypeConverter;
import java.util.Arrays;
import java.util.Optional;

/**
 * Converts a String[] to a Class[].
 *
 * @author Graeme Rocher
 * @since 1.0
 * @deprecated Registered by {@link ContextConverterRegistrar}
 */
@Deprecated
public class StringArrayToClassArrayConverter implements TypeConverter {

    private final ConversionService conversionService;

    /**
     * @param conversionService The conversion service
     */
    public StringArrayToClassArrayConverter(ConversionService conversionService) {
        this.conversionService = conversionService;
    }

    @Override
    public Optional convert(Object[] object, Class targetType, ConversionContext context) {
        Class[] classes = Arrays
            .stream(object)
            .map(str -> conversionService.convert(str, Class.class))
            .filter(Optional::isPresent)
            .map(Optional::get)
            .toArray(Class[]::new);

        return Optional.of(classes);
    }
}