/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the "Elastic License
 * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
 * Public License v 1"; you may not use this file except in compliance with, at
 * your election, the "Elastic License 2.0", the "GNU Affero General Public
 * License v3.0 only", or the "Server Side Public License, v 1".
 */

package org.elasticsearch.indices;

import org.elasticsearch.cluster.metadata.IndexNameExpressionResolver;
import org.elasticsearch.cluster.project.ProjectResolver;
import org.elasticsearch.cluster.project.TestProjectResolvers;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.util.concurrent.ThreadContext;

/**
 * A utility class that simplifies the creation of {@link IndexNameExpressionResolver} instances in tests to avoid repetition of
 * creating the constructor arguments for a default instance.
 */
public class TestIndexNameExpressionResolver {

    private TestIndexNameExpressionResolver() {}

    /**
     * @return a new instance of a {@link IndexNameExpressionResolver} that has been created with a new {@link ThreadContext} and the
     * default {@link SystemIndices} instance
     */
    public static IndexNameExpressionResolver newInstance() {
        return new IndexNameExpressionResolver(
            new ThreadContext(Settings.EMPTY),
            EmptySystemIndices.INSTANCE,
            TestProjectResolvers.DEFAULT_PROJECT_ONLY
        );
    }

    public static IndexNameExpressionResolver newInstance(ProjectResolver projectResolver) {
        return new IndexNameExpressionResolver(new ThreadContext(Settings.EMPTY), EmptySystemIndices.INSTANCE, projectResolver);
    }

    /**
     * @return a new instance of a {@link IndexNameExpressionResolver} that has been created with the provided {@link ThreadContext} and
     * the default {@link SystemIndices} instance
     */
    public static IndexNameExpressionResolver newInstance(ThreadContext threadContext) {
        return new IndexNameExpressionResolver(
            threadContext,
            EmptySystemIndices.INSTANCE,
            TestProjectResolvers.usingRequestHeader(threadContext)
        );
    }

    /**
     * @return a new instance of a {@link IndexNameExpressionResolver} that has been created with a new {@link ThreadContext} and
     * the provided {@link SystemIndices} instance
     */
    public static IndexNameExpressionResolver newInstance(SystemIndices systemIndices) {
        return new IndexNameExpressionResolver(new ThreadContext(Settings.EMPTY), systemIndices, TestProjectResolvers.DEFAULT_PROJECT_ONLY);
    }

    /**
     * @return a new instance of a {@link IndexNameExpressionResolver} that has been created with the provided {@link ThreadContext} and
     * {@link SystemIndices} instances
     */
    public static IndexNameExpressionResolver newInstance(ThreadContext threadContext, SystemIndices systemIndices) {
        return new IndexNameExpressionResolver(threadContext, systemIndices, TestProjectResolvers.usingRequestHeader(threadContext));
    }

    /**
     * @return a new instance of a {@link IndexNameExpressionResolver} that has been created with a new {@link ThreadContext},
     * the provided {@link SystemIndices} instance, and the provided {@link ProjectResolver}
     */
    public static IndexNameExpressionResolver newInstance(SystemIndices systemIndices, ProjectResolver projectResolver) {
        return new IndexNameExpressionResolver(new ThreadContext(Settings.EMPTY), systemIndices, projectResolver);
    }
}