/*
 * 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.coreapi.schema;

import static org.assertj.core.api.Assertions.assertThat;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import static org.neo4j.internal.schema.IndexPrototype.forSchema;
import static org.neo4j.internal.schema.SchemaDescriptors.forLabel;

import java.util.concurrent.TimeUnit;
import org.junit.jupiter.api.Test;
import org.neo4j.internal.helpers.Exceptions;
import org.neo4j.internal.kernel.api.InternalIndexState;
import org.neo4j.internal.kernel.api.SchemaRead;
import org.neo4j.internal.kernel.api.TokenRead;
import org.neo4j.internal.kernel.api.exceptions.schema.IndexNotFoundKernelException;
import org.neo4j.internal.schema.IndexDescriptor;
import org.neo4j.kernel.api.KernelTransaction;

class SchemaImplMockTest {
    private static final Exception cause = new Exception("Kilroy made it");

    @Test
    void includeCauseOfFailure() throws IndexNotFoundKernelException {
        // given
        IndexDefinitionImpl indexDefinition = mockIndexDefinition();
        when(indexDefinition.toString()).thenReturn("IndexDefinition( of-some-sort )");
        KernelTransaction kernelTransaction = mockKernelTransaction();
        SchemaImpl schema = new SchemaImpl(kernelTransaction);

        // when
        IllegalStateException e = assertThrows(
                IllegalStateException.class, () -> schema.awaitIndexOnline(indexDefinition, 1, TimeUnit.MINUTES));

        // then
        assertThat(e.getMessage()).contains(Exceptions.stringify(cause));
    }

    private static IndexDefinitionImpl mockIndexDefinition() {
        IndexDefinitionImpl indexDefinition = mock(IndexDefinitionImpl.class);
        when(indexDefinition.getIndexReference())
                .thenReturn(forSchema(forLabel(1, 1)).withName("index").materialise(13));
        return indexDefinition;
    }

    private static KernelTransaction mockKernelTransaction() throws IndexNotFoundKernelException {
        SchemaRead schemaRead = mock(SchemaRead.class);
        when(schemaRead.indexGetState(any(IndexDescriptor.class))).thenReturn(InternalIndexState.FAILED);
        when(schemaRead.indexGetFailure(any(IndexDescriptor.class))).thenReturn(Exceptions.stringify(cause));

        KernelTransaction kt = mock(KernelTransaction.class);
        when(kt.tokenRead()).thenReturn(mock(TokenRead.class));
        when(kt.schemaRead()).thenReturn(schemaRead);
        when(kt.isTerminated()).thenReturn(false);
        return kt;
    }
}
