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/*
 * Copyright 2022 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.tasks.diagnostics;

import groovy.lang.Closure;
import groovy.lang.DelegatesTo;
import org.gradle.api.Action;
import org.gradle.api.DefaultTask;
import org.gradle.api.Incubating;
import org.gradle.api.Project;
import org.gradle.api.internal.file.FileResolver;
import org.gradle.api.model.ObjectFactory;
import org.gradle.api.reporting.Reporting;
import org.gradle.api.tasks.Nested;
import org.gradle.api.tasks.TaskAction;
import org.gradle.api.tasks.diagnostics.configurations.ConfigurationReports;
import org.gradle.api.tasks.diagnostics.internal.configurations.ConfigurationReportsImpl;
import org.gradle.api.tasks.diagnostics.internal.configurations.model.ConfigurationReportModel;
import org.gradle.api.tasks.diagnostics.internal.configurations.model.ConfigurationReportModelFactory;
import org.gradle.api.tasks.diagnostics.internal.configurations.renderer.ConsoleConfigurationReportRenderer;
import org.gradle.api.tasks.diagnostics.internal.configurations.spec.AbstractConfigurationReportSpec;
import org.gradle.internal.logging.text.StyledTextOutput;
import org.gradle.internal.logging.text.StyledTextOutputFactory;
import org.gradle.internal.serialization.Cached;
import org.gradle.util.internal.ClosureBackedAction;
import org.gradle.work.DisableCachingByDefault;

import javax.inject.Inject;

/**
 * Base class for reporting tasks which display information about attributes and related data associated to a variant/configuration.
 *
 * This class implements {@link Reporting} to make configuring additional file output formats simple.
 *
 * @since 7.5
 */
@Incubating
@DisableCachingByDefault(because = "Produces only non-cacheable console output")
public abstract class AbstractConfigurationReportTask extends DefaultTask implements Reporting {
    private final ConfigurationReports reports;
    private final Cached reportModel = Cached.of(this::createReportModel);

    @Inject protected abstract ObjectFactory getObjectFactory();
    @Inject protected abstract StyledTextOutputFactory getTextOutputFactory();
    @Inject protected abstract FileResolver getFileResolver();

    protected abstract AbstractConfigurationReportSpec buildReportSpec();

    public AbstractConfigurationReportTask() {
        reports = getObjectFactory().newInstance(ConfigurationReportsImpl.class, this);
    }

    /**
     * The reports to be generated by this task.
     */
    @Override
    @Nested
    public final ConfigurationReports getReports() {
        return reports;
    }

    /**
     * Configures the reports to be generated by this task.
     *
     * The contained reports can be configured by task name and closures.
     *
     * @param closure The configuration
     * @return The reports container
     */
    @Override
    @SuppressWarnings("rawtypes")
    public ConfigurationReports reports(@DelegatesTo(value = ConfigurationReports.class, strategy = Closure.DELEGATE_FIRST) Closure closure) {
        return reports(new ClosureBackedAction<>(closure));
    }

    /**
     * Configures the reports to be generated by this task.
     *
     * The contained reports can be configured by task name and closures.
     *
     * @param configureAction The configuration
     * @return The reports container
     */
    @Override
    public ConfigurationReports reports(Action configureAction) {
        configureAction.execute(reports);
        return reports;
    }

    private ConfigurationReportModel createReportModel() {
        return buildReportModel(getProject());
    }

    @TaskAction
    public final void report() {
        final AbstractConfigurationReportSpec reportSpec = buildReportSpec();
        final ConfigurationReportModel model = reportModel.get();

        reportToConsole(reportSpec, model);
    }

    private void reportToConsole(AbstractConfigurationReportSpec reportSpec, ConfigurationReportModel reportModel) {
        final ConsoleConfigurationReportRenderer renderer = new ConsoleConfigurationReportRenderer(reportSpec);
        final StyledTextOutput output = getTextOutputFactory().create(getClass());
        renderer.render(reportModel, output);
    }

    private ConfigurationReportModel buildReportModel(Project project) {
        final ConfigurationReportModelFactory factory = new ConfigurationReportModelFactory(getFileResolver());
        return factory.buildForProject(project);
    }
}




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