/*
 * 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.camel.component.aws2.ddb.localstack;

import java.util.HashMap;
import java.util.Map;

import org.apache.camel.EndpointInject;
import org.apache.camel.Exchange;
import org.apache.camel.ProducerTemplate;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.aws2.ddb.Ddb2Constants;
import org.apache.camel.component.aws2.ddb.Ddb2Operations;
import org.apache.camel.test.infra.aws2.clients.AWSSDKClientUtils;
import org.junit.jupiter.api.Test;
import software.amazon.awssdk.services.dynamodb.model.AttributeDefinition;
import software.amazon.awssdk.services.dynamodb.model.AttributeValue;
import software.amazon.awssdk.services.dynamodb.model.CreateTableRequest;
import software.amazon.awssdk.services.dynamodb.model.DeleteTableRequest;
import software.amazon.awssdk.services.dynamodb.model.KeySchemaElement;
import software.amazon.awssdk.services.dynamodb.model.KeyType;
import software.amazon.awssdk.services.dynamodb.model.KeysAndAttributes;
import software.amazon.awssdk.services.dynamodb.model.ProvisionedThroughput;
import software.amazon.awssdk.services.dynamodb.model.ScalarAttributeType;

import static org.junit.jupiter.api.Assertions.*;

public class AWS2BatchGetItemsRuleIT extends Aws2DDBBase {

    @EndpointInject("direct:start")
    private ProducerTemplate template;

    private final String attributeName = "clave";
    private final String secondaryAttributeName = "secondary_attribute";
    private final String tableName = "TestTableGetBatch";
    private final String retrieveValue = "retrieve";
    private final String notRetrieveValue = "ignore";

    @Override
    protected void cleanupResources() throws Exception {
        super.cleanupResources();

        DeleteTableRequest deleteTableRequest = DeleteTableRequest.builder()
                .tableName(tableName)
                .build();
        ddbClient.deleteTable(deleteTableRequest);
    }

    @Override
    protected void setupResources() throws Exception {
        super.setupResources();
        ddbClient = AWSSDKClientUtils.newDynamoDBClient();
        CreateTableRequest createTableRequest = CreateTableRequest.builder()
                .tableName(tableName)
                .keySchema(
                        KeySchemaElement.builder()
                                .attributeName(attributeName)
                                .keyType(KeyType.HASH)
                                .build())
                .attributeDefinitions(
                        AttributeDefinition.builder()
                                .attributeType(ScalarAttributeType.S)
                                .attributeName(attributeName)
                                .build())
                .provisionedThroughput(ProvisionedThroughput.builder()
                        .readCapacityUnits(5L)
                        .writeCapacityUnits(5L)
                        .build())
                .build();
        ddbClient.createTable(createTableRequest);
    }

    @Test
    public void batchGetItems() {
        putItem(retrieveValue, "1");
        putItem(notRetrieveValue, "0");

        Exchange exchange = template.send("direct:start", e -> {
            e.getIn().setHeader(Ddb2Constants.OPERATION, Ddb2Operations.BatchGetItems);
            e.getIn().setHeader(Ddb2Constants.CONSISTENT_READ, true);

            Map<String, AttributeValue> key = new HashMap<>();
            key.put(attributeName, AttributeValue.builder().s(retrieveValue).build());
            Map<String, KeysAndAttributes> keysAndAttributesMap = new HashMap<>();
            KeysAndAttributes keysAndAttributes = KeysAndAttributes.builder()
                    .keys(key)
                    .build();
            keysAndAttributesMap.put(tableName, keysAndAttributes);
            e.getIn().setHeader(Ddb2Constants.BATCH_ITEMS, keysAndAttributesMap);

        });

        assertNull(exchange.getIn().getExchange().getException());
        assertNotNull(exchange.getIn().getHeader(Ddb2Constants.BATCH_RESPONSE));
        assertNotNull(exchange.getIn().getHeader(Ddb2Constants.UNPROCESSED_KEYS));
    }

    private void putItem(String value1, String value2) {
        final Map<String, AttributeValue> attributeMap = new HashMap<>();
        attributeMap.put(attributeName, AttributeValue.builder().s(value1).build());
        attributeMap.put(secondaryAttributeName, AttributeValue.builder().s(value2).build());

        template.send("direct:start", e -> {
            e.getIn().setHeader(Ddb2Constants.OPERATION, Ddb2Operations.BatchGetItems);
            e.getIn().setHeader(Ddb2Constants.CONSISTENT_READ, "true");
            e.getIn().setHeader(Ddb2Constants.RETURN_VALUES, "ALL_OLD");
            e.getIn().setHeader(Ddb2Constants.ITEM, attributeMap);
            e.getIn().setHeader(Ddb2Constants.ATTRIBUTE_NAMES, attributeMap.keySet());
        });
    }

    @Override
    protected RouteBuilder createRouteBuilder() {
        return new RouteBuilder() {
            @Override
            public void configure() {
                from("direct:start").to("aws2-ddb://" + tableName);
            }
        };
    }
}
