/*
 * Copyright 2017 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.caching.internal.tasks;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSortedMap;
import com.google.common.collect.ImmutableSortedSet;
import com.google.common.hash.HashCode;

import javax.annotation.Nullable;
import java.util.List;

/**
 * Records the inputs which constitute the {@link TaskOutputCachingBuildCacheKey}.
 */
public class BuildCacheKeyInputs {

    private final String taskClass;
    private final HashCode classLoaderHash;
    private final List<HashCode> actionClassLoaderHashes;
    private final ImmutableList<String> actionClassNames;
    private final ImmutableSortedMap<String, HashCode> inputHashes;
    private final ImmutableSortedSet<String> outputPropertyNames;

    public BuildCacheKeyInputs(
        @Nullable String taskClass,
        @Nullable HashCode classLoaderHash,
        @Nullable List<HashCode> actionClassLoaderHashes,
        @Nullable ImmutableList<String> actionClassNames,
        @Nullable ImmutableSortedMap<String, HashCode> inputHashes,
        @Nullable ImmutableSortedSet<String> outputPropertyNames
    ) {
        this.taskClass = taskClass;
        this.inputHashes = inputHashes;
        this.classLoaderHash = classLoaderHash;
        this.actionClassLoaderHashes = actionClassLoaderHashes;
        this.actionClassNames = actionClassNames;
        this.outputPropertyNames = outputPropertyNames;
    }

    @Nullable
    public String getTaskClass() {
        return taskClass;
    }

    @Nullable
    public ImmutableSortedMap<String, HashCode> getInputHashes() {
        return inputHashes;
    }

    @Nullable
    public HashCode getClassLoaderHash() {
        return classLoaderHash;
    }

    @Nullable
    public List<HashCode> getActionClassLoaderHashes() {
        return actionClassLoaderHashes;
    }

    @Nullable
    public ImmutableList<String> getActionClassNames() {
        return actionClassNames;
    }

    @Nullable
    public ImmutableSortedSet<String> getOutputPropertyNames() {
        return outputPropertyNames;
    }

    @Override
    public String toString() {
        return "BuildCacheKeyInputs{"
            + "classLoaderHash=" + classLoaderHash
            + ", actionClassLoaderHashes=" + actionClassLoaderHashes
            + ", actionClassNames=" + actionClassNames
            + ", inputHashes=" + inputHashes
            + ", outputPropertyNames=" + outputPropertyNames
            + '}';
    }
}
