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/**
 * ============LICENSE_START=======================================================
 * org.onap.aai
 * ================================================================================
 * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
 * Copyright © 2017-2018 Amdocs
 * ================================================================================
 * 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.
 * ============LICENSE_END=========================================================
 */
package org.onap.aai.sa.searchdbabstraction.searchapi;

import com.fasterxml.jackson.annotation.JsonProperty;

/**
 * An example of a date_range aggregation:
 *
 * <p>
 * 
 * <pre>
 * {
 *    "aggs": {
 *        "range": {
 *            "date_range": {
 *                "field": "date",
 *                "format": "MM-yyy",
 *                "ranges": [
 *                    { "to": "now-10M/M" },
 *                    { "from": "now-10M/M" }
 *                ]
 *            }
 *        }
 *    }
 * }
 * </pre>
 *
 * @author sye
 */
public class DateRangeAggregation extends AbstractAggregation {


    private String format;

    @JsonProperty("ranges")
    private DateRange[] dateRanges;


    public String getFormat() {
        return format;
    }

    public void setFormat(String format) {
        this.format = format;
    }

    public DateRange[] getDateRanges() {
        return dateRanges;
    }

    public void setDateRanges(DateRange[] dateRanges) {
        this.dateRanges = dateRanges;
    }

    @Override
    public String toElasticSearch() {
        StringBuilder sb = new StringBuilder();

        sb.append("\"date_range\": {\"field\": \"");
        sb.append(field);
        sb.append("\"");

        if (format != null) {
            sb.append(", \"format\": \"");
            sb.append(format);
            sb.append("\"");
        }

        if (dateRanges != null && dateRanges.length > 0) {
            sb.append(", \"ranges\": [");

            for (int i = 0; i < dateRanges.length; i++) {
                if (i > 0) {
                    sb.append(",");
                }
                sb.append(dateRanges[i].toElasticSearch());
            }

            sb.append("]");
        }

        if (size != null) {
            sb.append(", \"size\": ");
            sb.append(size);
        }

        if (minThreshold != null) {
            sb.append(", \"min_doc_count\": ").append(minThreshold);
        }

        sb.append("}");

        return sb.toString();
    }

    @Override
    public String toString() {
        StringBuffer sb = new StringBuffer();
        sb.append("date-range: {field: " + field + ", format: " + format + ", size: " + size + ", minThreshold: "
                + minThreshold + "ranges: [");
        for (int i = 0; i < dateRanges.length; i++) {
            if (i > 0) {
                sb.append(",");
            }
            sb.append(dateRanges[i].toString());
        }
        sb.append("]");

        return sb.toString();
    }

}