/*
 * Copyright 2007 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.compile;

import org.gradle.api.AntBuilder;
import org.gradle.api.internal.file.TemporaryFileProvider;
import org.gradle.api.internal.project.ProjectInternal;
import org.gradle.api.internal.tasks.compile.*;
import org.gradle.api.internal.tasks.compile.Compiler;
import org.gradle.internal.Factory;
import org.gradle.api.tasks.Nested;
import org.gradle.api.tasks.OutputDirectory;
import org.gradle.api.tasks.TaskAction;
import org.gradle.api.tasks.WorkResult;

import java.io.File;

/**
 * Compiles Java source files.
 *
 * @author Hans Dockter
 */
public class Compile extends AbstractCompile {
    private Compiler<JavaCompileSpec> javaCompiler;
    private File dependencyCacheDir;
    private final JavaCompileSpec spec = new DefaultJavaCompileSpec();

    public Compile() {
        Factory<AntBuilder> antBuilderFactory = getServices().getFactory(AntBuilder.class);
        JavaCompilerFactory inProcessCompilerFactory = new InProcessJavaCompilerFactory();
        ProjectInternal projectInternal = (ProjectInternal) getProject();
        TemporaryFileProvider tempFileProvider = projectInternal.getServices().get(TemporaryFileProvider.class);
        JavaCompilerFactory defaultCompilerFactory = new DefaultJavaCompilerFactory(projectInternal, tempFileProvider, antBuilderFactory, inProcessCompilerFactory);
        Compiler<JavaCompileSpec> delegatingCompiler = new DelegatingJavaCompiler(defaultCompilerFactory);
        javaCompiler = new IncrementalJavaCompiler(delegatingCompiler, antBuilderFactory, getOutputs());
    }

    @TaskAction
    protected void compile() {
        spec.setSource(getSource());
        spec.setDestinationDir(getDestinationDir());
        spec.setClasspath(getClasspath());
        spec.setDependencyCacheDir(getDependencyCacheDir());
        spec.setSourceCompatibility(getSourceCompatibility());
        spec.setTargetCompatibility(getTargetCompatibility());
        WorkResult result = javaCompiler.execute(spec);
        setDidWork(result.getDidWork());
    }

    @OutputDirectory
    public File getDependencyCacheDir() {
        return dependencyCacheDir;
    }

    public void setDependencyCacheDir(File dependencyCacheDir) {
        this.dependencyCacheDir = dependencyCacheDir;
    }

    /**
     * Returns the compilation options.
     *
     * @return The compilation options.
     */
    @Nested
    public CompileOptions getOptions() {
        return spec.getCompileOptions();
    }

    public Compiler<JavaCompileSpec> getJavaCompiler() {
        return javaCompiler;
    }

    public void setJavaCompiler(Compiler<JavaCompileSpec> javaCompiler) {
        this.javaCompiler = javaCompiler;
    }
}
