/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.neo4j.kernel.impl.api.index;

import java.nio.file.Path;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import org.neo4j.graphdb.ResourceIterator;
import org.neo4j.internal.kernel.api.InternalIndexState;
import org.neo4j.internal.kernel.api.PopulationProgress;
import org.neo4j.internal.schema.IndexDescriptor;
import org.neo4j.kernel.api.index.MinimalIndexAccessor;
import org.neo4j.values.storable.Value;

public class RecoveringIndexProxy extends AbstractSwallowingIndexProxy {
    private final MinimalIndexAccessor minimalIndexAccessor;

    RecoveringIndexProxy(IndexDescriptor indexDescriptor, MinimalIndexAccessor minimalIndexAccessor) {
        super(indexDescriptor, null);
        this.minimalIndexAccessor = minimalIndexAccessor;
    }

    @Override
    public InternalIndexState getState() {
        return InternalIndexState.POPULATING;
    }

    @Override
    public boolean awaitStoreScanCompleted(long time, TimeUnit unit) {
        throw unsupportedOperation("Cannot await population on a recovering index.");
    }

    @Override
    public void activate() {
        throw unsupportedOperation("Cannot activate recovering index.");
    }

    @Override
    public void validate() {
        throw unsupportedOperation("Cannot validate recovering index.");
    }

    @Override
    public void validateBeforeCommit(Value[] tuple, long entityId) {
        throw unsupportedOperation("Unexpected call for validating value while recovering.");
    }

    @Override
    public ResourceIterator<Path> snapshotFiles() {
        throw unsupportedOperation("Cannot snapshot a recovering index.");
    }

    @Override
    public Map<String, Value> indexConfig() {
        throw unsupportedOperation("Cannot get index configuration from recovering index.");
    }

    @Override
    public void drop() {
        minimalIndexAccessor.drop();
    }

    @Override
    public IndexPopulationFailure getPopulationFailure() throws IllegalStateException {
        throw new IllegalStateException(this + " is recovering");
    }

    @Override
    public PopulationProgress getIndexPopulationProgress() {
        throw new IllegalStateException(this + " is recovering");
    }

    private UnsupportedOperationException unsupportedOperation(String message) {
        return new UnsupportedOperationException(message + " Recovering Index" + getDescriptor());
    }
}
