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/*
 * Copyright (C) 2016 Red Hat, Inc.
 *
 * Licensed 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 io.syndesis.connector.sheets;

import java.util.Arrays;
import java.util.Map;
import java.util.Optional;

import io.syndesis.connector.sheets.meta.GoogleValueRangeMetaData;
import io.syndesis.connector.sheets.model.RangeCoordinate;
import org.apache.camel.CamelContext;
import org.apache.camel.component.extension.metadata.AbstractMetaDataExtension;
import org.apache.camel.component.extension.metadata.DefaultMetaData;
import org.apache.camel.util.ObjectHelper;

public class GoogleSheetsMetaDataExtension extends AbstractMetaDataExtension {
    private static final MetaData EMPTY_METADATA = new DefaultMetaData(null, null, null);

    public GoogleSheetsMetaDataExtension(CamelContext camelContext) {
        super(camelContext);
    }

    @Override
    public Optional meta(final Map properties) {
        final String spreadsheetId = Optional.ofNullable(properties.get("spreadsheetId"))
                                     .map(Object::toString)
                                     .orElse("");

        final String range = Optional.ofNullable(properties.get("range"))
                                     .map(Object::toString)
                                     .orElse("");

        final String headerRow = Optional.ofNullable(properties.get("headerRow"))
                                     .map(Object::toString)
                                     .orElse(null);

        final String[] columnNames = Optional.ofNullable(properties.get("columnNames"))
                                             .map(Object::toString)
                                             .map(names -> names.split(","))
                                             .orElse(new String[]{});

        Arrays.parallelSetAll(columnNames, (i) -> columnNames[i].trim());

        if (ObjectHelper.isNotEmpty(range)) {
            final GoogleValueRangeMetaData valueRangeMetaData = new GoogleValueRangeMetaData();
            valueRangeMetaData.setSpreadsheetId(spreadsheetId);
            valueRangeMetaData.setRange(range);
            valueRangeMetaData.setHeaderRow(headerRow);
            valueRangeMetaData.setColumnNames(columnNames);

            final String majorDimension = Optional.ofNullable(properties.get("majorDimension"))
                    .map(Object::toString)
                    .orElse(RangeCoordinate.DIMENSION_ROWS);

            valueRangeMetaData.setMajorDimension(majorDimension);

            final boolean split = Optional.ofNullable(properties.get("splitResults"))
                    .map(Object::toString)
                    .map(Boolean::valueOf)
                    .orElse(false);

            valueRangeMetaData.setSplit(split);

            return Optional.of(new DefaultMetaData(null, null, valueRangeMetaData));
        }

        return Optional.of(EMPTY_METADATA);
    }
}