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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;

import groovy.lang.GroovyClassLoader;
import org.codehaus.groovy.ast.ASTNode;
import org.codehaus.groovy.ast.ClassNode;
import org.codehaus.groovy.ast.ModuleNode;
import org.codehaus.groovy.control.SourceUnit;
import org.codehaus.groovy.transform.ASTTransformation;
import org.springframework.core.annotation.Order;

import org.grails.cli.compiler.grape.DependencyResolutionContext;

/**
 * {@link ASTTransformation} to apply
 * {@link CompilerAutoConfiguration#applyDependencies(DependencyCustomizer) dependency
 * auto-configuration}.
 *
 * @author Phillip Webb
 * @author Dave Syer
 * @author Andy Wilkinson
 * @since 2022.1.0
 */
@Order(DependencyAutoConfigurationTransformation.ORDER)
public class DependencyAutoConfigurationTransformation implements ASTTransformation {

    /**
     * The order of the transformation.
     */
    public static final int ORDER = DependencyManagementBomTransformation.ORDER + 100;

    private final GroovyClassLoader loader;

    private final DependencyResolutionContext dependencyResolutionContext;

    private final Iterable compilerAutoConfigurations;

    public DependencyAutoConfigurationTransformation(GroovyClassLoader loader,
            DependencyResolutionContext dependencyResolutionContext,
            Iterable compilerAutoConfigurations) {
        this.loader = loader;
        this.dependencyResolutionContext = dependencyResolutionContext;
        this.compilerAutoConfigurations = compilerAutoConfigurations;

    }

    @Override
    public void visit(ASTNode[] nodes, SourceUnit source) {
        for (ASTNode astNode : nodes) {
            if (astNode instanceof ModuleNode) {
                visitModule((ModuleNode) astNode);
            }
        }
    }

    private void visitModule(ModuleNode module) {
        DependencyCustomizer dependencies = new DependencyCustomizer(this.loader, module,
                this.dependencyResolutionContext);
        for (ClassNode classNode : module.getClasses()) {
            for (CompilerAutoConfiguration autoConfiguration : this.compilerAutoConfigurations) {
                if (autoConfiguration.matches(classNode)) {
                    autoConfiguration.applyDependencies(dependencies);
                }
            }
        }
    }

}