/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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.
 */
package org.apache.pulsar.io.redis.sink;

import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.Map;
import java.util.Optional;
import lombok.extern.slf4j.Slf4j;
import org.apache.pulsar.functions.api.Record;
import org.apache.pulsar.functions.instance.SinkRecord;
import org.apache.pulsar.io.core.SinkContext;
import org.apache.pulsar.io.redis.EmbeddedRedisUtils;
import org.mockito.Mockito;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;

/**
 * redis Sink test.
 */
@Slf4j
public class RedisSinkTest {

    private EmbeddedRedisUtils embeddedRedisUtils;

    @BeforeMethod
    public void setUp() throws Exception {
        embeddedRedisUtils = new EmbeddedRedisUtils(getClass().getSimpleName());
        embeddedRedisUtils.setUp();
    }

    @AfterMethod(alwaysRun = true)
    public void tearDown() throws Exception {
        embeddedRedisUtils.tearDown();
    }

    @Test
    public void testOpenAndWriteSink() throws Exception {
        Map<String, Object> configs = new HashMap<>();
        configs.put("redisHosts", "localhost:6379");
        configs.put("redisPassword", "");
        configs.put("redisDatabase", "1");
        configs.put("clientMode", "Standalone");
        configs.put("operationTimeout", "3000");
        configs.put("batchSize", "10");

        RedisSink sink = new RedisSink();

        // prepare a foo Record
        Record<byte[]> record = build("fakeTopic", "fakeKey", "fakeValue");

        // open should success
        SinkContext sinkContext = Mockito.mock(SinkContext.class);
        sink.open(configs, sinkContext);

        try {
            // write should success.
            sink.write(record);
            log.info("executed write");

            // sleep to wait backend flush complete
            Thread.sleep(1000);
        } finally {
            sink.close();
        }
    }

    private Record<byte[]> build(String topic, String key, String value) {
        // prepare a SinkRecord
        SinkRecord<byte[]> record = new SinkRecord<>(new Record<byte[]>() {

            @Override
            public byte[] getValue() {
                return value.getBytes(StandardCharsets.UTF_8);
            }

            @Override
            public Optional<String> getDestinationTopic() {
                if (topic != null) {
                    return Optional.of(topic);
                } else {
                    return Optional.empty();
                }
            }
        }, value.getBytes(StandardCharsets.UTF_8));
        return record;
    }
}
