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/*
 * Copyright 2015-2023 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.profile

import groovy.transform.CompileStatic
import groovy.transform.EqualsAndHashCode
import groovy.transform.ToString
import org.eclipse.aether.graph.Dependency
import org.yaml.snakeyaml.LoaderOptions
import org.yaml.snakeyaml.Yaml
import org.yaml.snakeyaml.constructor.SafeConstructor

import org.grails.config.NavigableMap
import org.grails.io.support.Resource

import static org.grails.cli.profile.ProfileUtil.createDependency

/**
 * Default implementation of the {@link Feature} interface
 *
 * @author Graeme Rocher
 * @since 3.1
 */
@EqualsAndHashCode(includes = ['name'])
@ToString(includes = ['profile', 'name'])
@CompileStatic
class DefaultFeature implements Feature {

    final Profile profile
    final String name
    final Resource location
    final NavigableMap configuration = new NavigableMap()
    final List dependencies = []
    final List buildPlugins
    final List buildRepositories

    DefaultFeature(Profile profile, String name, Resource location) {
        this.profile = profile
        this.name = name
        this.location = location
        Resource featureYml = location.createRelative('feature.yml')
        Map featureConfig = new Yaml(new SafeConstructor(new LoaderOptions())).>load(featureYml.getInputStream())
        configuration.merge(featureConfig)
        def dependenciesConfig = configuration.get('dependencies')

        if (dependenciesConfig instanceof List) {
            for (entry in ((List) dependenciesConfig)) {
                if (entry instanceof Map) {
                    String scope = (String) entry.scope
                    String os = (String) entry.os
                    if (os && !isSupportedOs(os)) {
                        continue
                    }
                    String coords = (String) entry.coords
                    Dependency dependency = createDependency(coords, scope, entry)
                    dependencies.add(dependency)
                }
            }
        }
        this.buildPlugins = (List) configuration.get('build.plugins', [])
        this.buildRepositories = (List) configuration.get('build.repositories', [])
    }

    @Override
    String getDescription() {
        configuration.get('description', '').toString()
    }

    static boolean isSupportedOs(String os) {
        os = os.toLowerCase(Locale.ENGLISH).trim()
        String osName = System.getProperty('os.name')?.toLowerCase(Locale.ENGLISH) ?: 'unix'
        switch (os) {
            case 'windows':
                return osName.contains('windows')
            case 'osx':
                return osName.contains('mac os x') || osName.contains('darwin') || osName.contains('osx')
            case 'unix':
                return osName.contains('mac os x') || osName.contains('darwin') || osName.contains('osx') ||
                        osName.contains('sunos') || osName.contains('solaris') || osName.contains('linux') ||
                        osName.contains('freebsd')
            default:
                return false
        }
    }

}