/*
 * Copyright 2014 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
 *
 *      http://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.gradle.api.internal.artifacts.ivyservice;

import com.google.common.collect.ImmutableList;
import org.gradle.cache.GlobalCache;
import org.gradle.cache.internal.CacheVersion;
import org.gradle.cache.scopes.GlobalScopedCache;

import java.io.File;
import java.util.List;

public class DefaultArtifactCacheMetadata implements ArtifactCacheMetadata, GlobalCache {

    public static final CacheVersion CACHE_LAYOUT_VERSION = CacheLayout.META_DATA.getVersion();
    private final File cacheDir;
    private final File transformsDir;
    private final File baseDir;

    public DefaultArtifactCacheMetadata(GlobalScopedCache globalScopedCache) {
        this.baseDir = globalScopedCache.getRootDir();
        this.cacheDir = globalScopedCache.baseDirForCrossVersionCache(CacheLayout.ROOT.getKey());
        this.transformsDir = globalScopedCache.baseDirForCrossVersionCache(CacheLayout.TRANSFORMS.getKey());
    }

    public DefaultArtifactCacheMetadata(GlobalScopedCache globalScopedCache, File baseDir) {
        this(globalScopedCache.newScopedCache(baseDir));
    }

    @Override
    public File getCacheDir() {
        return cacheDir;
    }

    @Override
    public File getTransformsStoreDirectory() {
        return transformsDir;
    }

    @Override
    public File getFileStoreDirectory() {
        return createCacheRelativeDir(CacheLayout.FILE_STORE);
    }

    @Override
    public File getExternalResourcesStoreDirectory() {
        return createCacheRelativeDir(CacheLayout.RESOURCES);
    }

    @Override
    public File getMetaDataStoreDirectory() {
        return new File(createCacheRelativeDir(CacheLayout.META_DATA), "descriptors");
    }

    private File createCacheRelativeDir(CacheLayout cacheLayout) {
        return cacheLayout.getPath(getCacheDir());
    }

    @Override
    public List<File> getGlobalCacheRoots() {
        return ImmutableList.of(baseDir);
    }
}
