/*
 * SPDX-License-Identifier: Apache-2.0
 *
 * The OpenSearch Contributors require contributions made to
 * this file be licensed under the Apache-2.0 license or a
 * compatible open source license.
 */

/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch licenses this file to you 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.
 */

/*
 * Modifications Copyright OpenSearch Contributors. See
 * GitHub history for details.
 */

package org.opensearch.action.admin.indices.analyze;

import org.opensearch.action.ActionRequestValidationException;
import org.opensearch.common.io.stream.BytesStreamOutput;
import org.opensearch.core.common.io.stream.StreamInput;
import org.opensearch.test.OpenSearchTestCase;

import java.io.IOException;

import static org.hamcrest.CoreMatchers.containsString;

public class AnalyzeRequestTests extends OpenSearchTestCase {

    public void testValidation() {
        AnalyzeAction.Request request = new AnalyzeAction.Request();

        ActionRequestValidationException e = request.validate();
        assertNotNull("text validation should fail", e);
        assertTrue(e.getMessage().contains("text is missing"));

        request.text(new String[0]);
        e = request.validate();
        assertNotNull("text validation should fail", e);
        assertTrue(e.getMessage().contains("text is missing"));

        request.text("");
        request.normalizer("some normalizer");
        e = request.validate();
        assertNotNull("normalizer validation should fail", e);
        assertTrue(e.getMessage().contains("index is required if normalizer is specified"));

        request.index("");
        e = request.validate();
        assertNotNull("normalizer validation should fail", e);
        assertTrue(e.getMessage().contains("index is required if normalizer is specified"));

        request.index("something");
        e = request.validate();
        assertNull("something wrong in validate", e);

        request.tokenizer("tokenizer");
        e = request.validate();
        assertTrue(e.getMessage().contains("tokenizer/analyze should be null if normalizer is specified"));

        AnalyzeAction.Request requestAnalyzer = new AnalyzeAction.Request("index");
        requestAnalyzer.normalizer("some normalizer");
        requestAnalyzer.text("something");
        requestAnalyzer.analyzer("analyzer");
        e = requestAnalyzer.validate();
        assertTrue(e.getMessage().contains("tokenizer/analyze should be null if normalizer is specified"));

        {
            AnalyzeAction.Request analyzerPlusDefs = new AnalyzeAction.Request("index");
            analyzerPlusDefs.text("text");
            analyzerPlusDefs.analyzer("analyzer");
            analyzerPlusDefs.addTokenFilter("tokenfilter");
            e = analyzerPlusDefs.validate();
            assertNotNull(e);
            assertThat(e.getMessage(), containsString("cannot define extra components on a named analyzer"));
        }

        {
            AnalyzeAction.Request analyzerPlusDefs = new AnalyzeAction.Request("index");
            analyzerPlusDefs.text("text");
            analyzerPlusDefs.normalizer("normalizer");
            analyzerPlusDefs.addTokenFilter("tokenfilter");
            e = analyzerPlusDefs.validate();
            assertNotNull(e);
            assertThat(e.getMessage(), containsString("cannot define extra components on a named normalizer"));
        }
        {
            AnalyzeAction.Request analyzerPlusDefs = new AnalyzeAction.Request("index");
            analyzerPlusDefs.text("text");
            analyzerPlusDefs.field("field");
            analyzerPlusDefs.addTokenFilter("tokenfilter");
            e = analyzerPlusDefs.validate();
            assertNotNull(e);
            assertThat(e.getMessage(), containsString("cannot define extra components on a field-specific analyzer"));
        }
    }

    public void testSerialization() throws IOException {
        AnalyzeAction.Request request = new AnalyzeAction.Request("foo");
        request.text("a", "b");
        request.tokenizer("tokenizer");
        request.addTokenFilter("tokenfilter");
        request.addCharFilter("charfilter");
        request.normalizer("normalizer");

        try (BytesStreamOutput output = new BytesStreamOutput()) {
            request.writeTo(output);
            try (StreamInput in = output.bytes().streamInput()) {
                AnalyzeAction.Request serialized = new AnalyzeAction.Request(in);
                assertArrayEquals(request.text(), serialized.text());
                assertEquals(request.tokenizer().name, serialized.tokenizer().name);
                assertEquals(request.tokenFilters().get(0).name, serialized.tokenFilters().get(0).name);
                assertEquals(request.charFilters().get(0).name, serialized.charFilters().get(0).name);
                assertEquals(request.normalizer(), serialized.normalizer());
            }
        }
    }
}
