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/*
 * Copyright 2023 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
 *
 *      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.
 */

package org.gradle.api.internal.configuration;

import org.gradle.api.configuration.BuildFeature;
import org.gradle.api.configuration.BuildFeatures;
import org.gradle.api.internal.StartParameterInternal;
import org.gradle.api.internal.provider.ProviderInternal;
import org.gradle.api.internal.provider.Providers;
import org.gradle.api.provider.Provider;
import org.gradle.internal.buildoption.Option;
import org.gradle.internal.buildtree.BuildModelParameters;
import org.gradle.internal.lazy.Lazy;

import javax.inject.Inject;

public class DefaultBuildFeatures implements BuildFeatures {

    private final Lazy configurationCache;
    private final Lazy isolatedProjects;

    @Inject
    public DefaultBuildFeatures(StartParameterInternal startParameter, BuildModelParameters buildModelParameters) {
        this.configurationCache = Lazy.atomic().of(() -> createConfigurationCache(startParameter, buildModelParameters));
        this.isolatedProjects = Lazy.atomic().of(() -> createIsolatedProjects(startParameter, buildModelParameters));
    }

    @Override
    public BuildFeature getConfigurationCache() {
        return configurationCache.get();
    }

    @Override
    public BuildFeature getIsolatedProjects() {
        return isolatedProjects.get();
    }

    private static BuildFeature createConfigurationCache(StartParameterInternal startParameter, BuildModelParameters buildModelParameters) {
        Provider isRequested = getRequestedProvider(startParameter.getConfigurationCache());
        Provider isActive = Providers.of(buildModelParameters.isConfigurationCache());
        return new DefaultBuildFeature(isRequested, isActive);
    }

    private static BuildFeature createIsolatedProjects(StartParameterInternal startParameter, BuildModelParameters buildModelParameters) {
        Provider isRequested = getRequestedProvider(startParameter.getIsolatedProjects());
        Provider isActive = Providers.of(buildModelParameters.isIsolatedProjects());
        return new DefaultBuildFeature(isRequested, isActive);
    }

    private static ProviderInternal getRequestedProvider(Option.Value optionValue) {
        return Providers.ofNullable(optionValue.isExplicit() ? optionValue.get() : null);
    }
}