/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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 1.0.0
 */
@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<CompilerAutoConfiguration> compilerAutoConfigurations;

    public DependencyAutoConfigurationTransformation(GroovyClassLoader loader,
            DependencyResolutionContext dependencyResolutionContext,
            Iterable<CompilerAutoConfiguration> 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);
                }
            }
        }
    }

}
