io.github.theangrydev.fluentbdd.assertjgenerator.WithFluentAssertJGeneratorMojo Maven / Gradle / Ivy

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/*
 * Copyright 2016 Liam Williams .
 *
 * This file is part of fluent-bdd.
 *
 * 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 io.github.theangrydev.fluentbdd.assertjgenerator;

import com.google.common.annotations.VisibleForTesting;
import com.squareup.javapoet.JavaFile;
import org.apache.maven.plugin.AbstractMojo;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;
import org.apache.maven.plugins.annotations.Mojo;
import org.apache.maven.plugins.annotations.Parameter;
import org.apache.maven.project.MavenProject;

import java.io.File;
import java.io.IOException;
import java.nio.file.Path;

import static io.github.theangrydev.fluentbdd.assertjgenerator.JavaEmitter.javaEmitter;
import static org.apache.maven.plugins.annotations.LifecyclePhase.GENERATE_SOURCES;

@SuppressWarnings("PMD.AvoidCatchingGenericException") // Needed to ensure uncaught exceptions are logged
@Mojo(name = "generate-sources", defaultPhase = GENERATE_SOURCES)
public class WithFluentAssertJGeneratorMojo extends AbstractMojo {

    @Parameter(property = "project", readonly = true, required = true)
    private MavenProject project;

    @Parameter(defaultValue = "target/generated-sources/assertj-extensions-generator", required = true)
    private File outputDirectory;

    @Parameter(defaultValue = "io.github.theangrydev.fluentbdd.assertj", required = true)
    private String outputPackage;

    private final JavaFileReader javaFileReader;
    private final JavaFileWriter javaFileWriter;
    private final JavaEmitter javaEmitter;

    public WithFluentAssertJGeneratorMojo() {
        this(new JavaFileReader(), new JavaFileWriter(), javaEmitter());
    }

    @VisibleForTesting
    WithFluentAssertJGeneratorMojo(JavaFileReader javaFileReader, JavaFileWriter javaFileWriter, JavaEmitter javaEmitter) {
        this.javaFileReader = javaFileReader;
        this.javaFileWriter = javaFileWriter;
        this.javaEmitter = javaEmitter;
    }

    @Override
    public void execute() throws MojoExecutionException, MojoFailureException {
        try {
            JavaFile delegateWithAssertions = javaEmitter.delegateWithAssertions(outputPackage);
            JavaFile withFluentAssertJ = javaEmitter.withFluentAssertJ(outputPackage);

            writeJavaFile(delegateWithAssertions);
            writeJavaFile(withFluentAssertJ);

            project.addCompileSourceRoot(outputDirectory.getAbsolutePath());
        } catch (IOException | ClassNotFoundException | RuntimeException any) {
            getLog().error("Problem generating", any);
        }
    }

    private void writeJavaFile(JavaFile javaFile) throws IOException {
        javaFileWriter.write(outputDirectory, javaFile);
        Path outputFile = outputFile(javaFile);
        getLog().info("Wrote " + outputFile);
        if (getLog().isDebugEnabled()) {
            logFile(outputFile);
        }
    }

    private void logFile(Path outputFile) throws IOException {
        getLog().debug("File content: " + javaFileReader.fileContent(outputFile));
    }

    private Path outputFile(JavaFile outputClassName) {
        return outputDirectory.toPath()
                .resolve(outputPackage.replace('.', File.separatorChar))
                .resolve(outputClassName.typeSpec.name + ".java");
    }

    public void setOutputPackage(String outputPackage) {
        this.outputPackage = outputPackage;
    }

    public void setProject(MavenProject project) {
        this.project = project;
    }

    public void setOutputDirectory(File outputDirectory) {
        this.outputDirectory = outputDirectory;
    }
}