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/*
 * Copyright 2012-2023 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
 *
 *      https://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.grails.cli.compiler.autoconfigure;

import groovy.lang.GroovyClassLoader;
import org.codehaus.groovy.ast.AnnotationNode;
import org.codehaus.groovy.ast.ClassHelper;
import org.codehaus.groovy.ast.ClassNode;
import org.codehaus.groovy.classgen.GeneratorContext;
import org.codehaus.groovy.control.CompilationFailedException;
import org.codehaus.groovy.control.SourceUnit;
import org.codehaus.groovy.control.customizers.ImportCustomizer;

import org.grails.cli.compiler.CompilerAutoConfiguration;
import org.grails.cli.compiler.DependencyCustomizer;
import org.grails.cli.compiler.GroovyCompilerConfiguration;

/**
 * {@link CompilerAutoConfiguration} for Spring.
 *
 * @author Dave Syer
 * @author Phillip Webb
 * @since 2022.1.0
 */
public class SpringBootCompilerAutoConfiguration extends CompilerAutoConfiguration {

    @Override
    public void applyDependencies(DependencyCustomizer dependencies) {
        dependencies.ifAnyMissingClasses("org.springframework.boot.SpringApplication").add("spring-boot-starter");
    }

    @Override
    public void applyImports(ImportCustomizer imports) {
        imports.addImports("javax.annotation.PostConstruct", "javax.annotation.PreDestroy", "groovy.util.logging.Log",
                "org.springframework.stereotype.Controller", "org.springframework.stereotype.Service",
                "org.springframework.stereotype.Component", "org.springframework.beans.factory.annotation.Autowired",
                "org.springframework.beans.factory.annotation.Value", "org.springframework.context.annotation.Import",
                "org.springframework.context.annotation.ImportResource",
                "org.springframework.context.annotation.Profile", "org.springframework.context.annotation.Scope",
                "org.springframework.context.annotation.Configuration",
                "org.springframework.context.annotation.ComponentScan", "org.springframework.context.annotation.Bean",
                "org.springframework.context.ApplicationContext", "org.springframework.context.MessageSource",
                "org.springframework.core.annotation.Order", "org.springframework.core.io.ResourceLoader",
                "org.springframework.boot.ApplicationRunner", "org.springframework.boot.ApplicationArguments",
                "org.springframework.boot.CommandLineRunner",
                "org.springframework.boot.context.properties.ConfigurationProperties",
                "org.springframework.boot.context.properties.EnableConfigurationProperties",
                "org.springframework.boot.autoconfigure.EnableAutoConfiguration",
                "org.springframework.boot.autoconfigure.SpringBootApplication",
                "org.springframework.boot.context.properties.ConfigurationProperties",
                "org.springframework.boot.context.properties.EnableConfigurationProperties");
        imports.addStarImports("org.springframework.stereotype", "org.springframework.scheduling.annotation");
    }

    @Override
    public void applyToMainClass(GroovyClassLoader loader, GroovyCompilerConfiguration configuration,
            GeneratorContext generatorContext, SourceUnit source, ClassNode classNode)
            throws CompilationFailedException {
        addEnableAutoConfigurationAnnotation(classNode);
    }

    private void addEnableAutoConfigurationAnnotation(ClassNode classNode) {
        if (!hasEnableAutoConfigureAnnotation(classNode)) {
            AnnotationNode annotationNode = new AnnotationNode(ClassHelper.make("EnableAutoConfiguration"));
            classNode.addAnnotation(annotationNode);
        }
    }

    private boolean hasEnableAutoConfigureAnnotation(ClassNode classNode) {
        for (AnnotationNode node : classNode.getAnnotations()) {
            String name = node.getClassNode().getNameWithoutPackage();
            if ("EnableAutoConfiguration".equals(name) || "SpringBootApplication".equals(name)) {
                return true;
            }
        }
        return false;
    }

}