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/*
 * Copyright 2017-2022 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.starter.api;

import io.micronaut.context.BeanLocator;
import io.micronaut.context.MessageSource;
import io.micronaut.inject.qualifiers.Qualifiers;
import io.micronaut.starter.application.ApplicationType;
import io.micronaut.starter.feature.AvailableFeatures;
import io.micronaut.starter.feature.Feature;

import jakarta.inject.Singleton;
import java.util.Comparator;
import java.util.List;
import java.util.Locale;
import java.util.stream.Collectors;

/**
 * Implements the {@link FeatureOperations} interface.
 *
 * @author graemerocher
 * @since 1.0.0
 */
@Singleton
public class FeatureService implements FeatureOperations {

    private final List features;
    private final BeanLocator beanLocator;
    private final MessageSource messageSource;

    /**
     * Default constructor.
     * @param features The features
     * @param beanLocator The bean locator
     */
    public FeatureService(List features, BeanLocator beanLocator, MessageSource messageSource) {
        this.features = features;
        this.beanLocator = beanLocator;
        this.messageSource = messageSource;
    }

    @Override
    public List getAllFeatures(Locale locale) {
        MessageSource.MessageContext context = MessageSource.MessageContext.of(locale);
        return features.stream()
                .filter(Feature::isVisible)
                .map(feature -> new FeatureDTO(feature, messageSource, context))
                .sorted(Comparator.comparing(FeatureDTO::getName))
                .collect(Collectors.toList());
    }

    @Override
    public List getFeatures(Locale locale, ApplicationType type) {
        MessageSource.MessageContext context = MessageSource.MessageContext.of(locale);
        return beanLocator.getBean(AvailableFeatures.class, Qualifiers.byName(type.getName()))
                .getFeatures()
                .map(feature -> new FeatureDTO(feature, messageSource, context))
                .sorted(Comparator.comparing(FeatureDTO::getName))
                .collect(Collectors.toList());
    }
}