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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.dependencies;

import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

import org.apache.maven.model.Model;

import org.grails.cli.compiler.dependencies.Dependency.Exclusion;

/**
 * {@link DependencyManagement} derived from a Maven {@link Model}.
 *
 * @author Andy Wilkinson
 * @since 2022.1.0
 */
public class MavenModelDependencyManagement implements DependencyManagement {

    private final List dependencies;

    private final Map byArtifactId = new LinkedHashMap<>();

    public MavenModelDependencyManagement(Model model) {
        this.dependencies = extractDependenciesFromModel(model);
        for (Dependency dependency : this.dependencies) {
            this.byArtifactId.put(dependency.getArtifactId(), dependency);
        }
    }

    private static List extractDependenciesFromModel(Model model) {
        List dependencies = new ArrayList<>();
        for (org.apache.maven.model.Dependency mavenDependency : model.getDependencyManagement().getDependencies()) {
            List exclusions = new ArrayList<>();
            for (org.apache.maven.model.Exclusion mavenExclusion : mavenDependency.getExclusions()) {
                exclusions.add(new Exclusion(mavenExclusion.getGroupId(), mavenExclusion.getArtifactId()));
            }
            Dependency dependency = new Dependency(mavenDependency.getGroupId(), mavenDependency.getArtifactId(),
                    mavenDependency.getVersion(), exclusions);
            dependencies.add(dependency);
        }
        return dependencies;
    }

    @Override
    public List getDependencies() {
        return this.dependencies;
    }

    @Override
    public String getSpringBootVersion() {
        return find("spring-boot").getVersion();
    }

    @Override
    public String getGrailsVersion() {
        return find("grails-core").getVersion();
    }

    @Override
    public Dependency find(String artifactId) {
        return this.byArtifactId.get(artifactId);
    }

}