/*
 * Copyright 2011 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.plugins.quality;

import com.google.common.util.concurrent.Callables;
import org.gradle.api.Action;
import org.gradle.api.Plugin;
import org.gradle.api.artifacts.Configuration;
import org.gradle.api.artifacts.DependencySet;
import org.gradle.api.internal.ConventionMapping;
import org.gradle.api.internal.plugins.DslObject;
import org.gradle.api.plugins.GroovyBasePlugin;
import org.gradle.api.plugins.quality.internal.AbstractCodeQualityPlugin;
import org.gradle.api.reporting.SingleFileReport;
import org.gradle.api.resources.TextResource;
import org.gradle.api.tasks.SourceSet;
import org.gradle.internal.metaobject.DynamicObject;

import java.io.File;
import java.util.concurrent.Callable;

/**
 * CodeNarc Plugin.
 */
public class CodeNarcPlugin extends AbstractCodeQualityPlugin<CodeNarc> {

    public static final String DEFAULT_CODENARC_VERSION = "1.1";
    private CodeNarcExtension extension;

    @Override
    protected String getToolName() {
        return "CodeNarc";
    }

    @Override
    protected Class<CodeNarc> getTaskType() {
        return CodeNarc.class;
    }

    @Override
    protected Class<? extends Plugin> getBasePlugin() {
        return GroovyBasePlugin.class;
    }

    @Override
    protected CodeQualityExtension createExtension() {
        extension = project.getExtensions().create("codenarc", CodeNarcExtension.class, project);
        extension.setToolVersion(DEFAULT_CODENARC_VERSION);
        extension.setConfig(project.getResources().getText().fromFile(project.getRootProject().file("config/codenarc/codenarc.xml")));
        extension.setMaxPriority1Violations(0);
        extension.setMaxPriority2Violations(0);
        extension.setMaxPriority3Violations(0);
        extension.setReportFormat("html");
        return extension;
    }

    @Override
    protected void configureConfiguration(Configuration configuration) {
        configureDefaultDependencies(configuration);
    }

    @Override
    protected void configureTaskDefaults(CodeNarc task, String baseName) {
        Configuration configuration = project.getConfigurations().getAt(getConfigurationName());
        configureTaskConventionMapping(configuration, task);
        configureReportsConventionMapping(task, baseName);
    }

    private void configureDefaultDependencies(Configuration configuration) {
        configuration.defaultDependencies(new Action<DependencySet>() {
            @Override
            public void execute(DependencySet dependencies) {
                dependencies.add(project.getDependencies().create("org.codenarc:CodeNarc:" + extension.getToolVersion()));
            }
        });
    }

    private void configureTaskConventionMapping(Configuration configuration, CodeNarc task) {
        ConventionMapping taskMapping = task.getConventionMapping();
        taskMapping.map("codenarcClasspath", Callables.returning(configuration));
        taskMapping.map("config", new Callable<TextResource>() {
            @Override
            public TextResource call() {
                return extension.getConfig();
            }
        });
        taskMapping.map("maxPriority1Violations", new Callable<Integer>() {
            @Override
            public Integer call() {
                return extension.getMaxPriority1Violations();
            }
        });
        taskMapping.map("maxPriority2Violations", new Callable<Integer>() {
            @Override
            public Integer call() {
                return extension.getMaxPriority2Violations();
            }
        });
        taskMapping.map("maxPriority3Violations", new Callable<Integer>() {
            @Override
            public Integer call() {
                return extension.getMaxPriority3Violations();
            }
        });
        taskMapping.map("ignoreFailures", new Callable<Boolean>() {
            @Override
            public Boolean call() {
                return extension.isIgnoreFailures();
            }
        });
    }

    private void configureReportsConventionMapping(CodeNarc task, final String baseName) {
        task.getReports().all(new Action<SingleFileReport>() {
            @Override
            public void execute(final SingleFileReport report) {
                ConventionMapping reportMapping = AbstractCodeQualityPlugin.conventionMappingOf(report);
                reportMapping.map("enabled", new Callable<Boolean>() {
                    @Override
                    public Boolean call() {
                        return report.getName().equals(extension.getReportFormat());
                    }
                });
                reportMapping.map("destination", new Callable<File>() {
                    @Override
                    public File call() {
                        String fileSuffix = report.getName().equals("text") ? "txt" : report.getName();
                        return new File(extension.getReportsDir(), baseName + "." + fileSuffix);
                    }
                });
            }
        });
    }

    @Override
    protected void configureForSourceSet(final SourceSet sourceSet, CodeNarc task) {
        task.setDescription("Run CodeNarc analysis for " + sourceSet.getName() + " classes");
        DynamicObject dynamicObject = new DslObject(sourceSet).getAsDynamicObject();
        task.setSource(dynamicObject.getProperty("allGroovy"));
    }
}
