/*
 * 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.beam.sdk.io.influxdb;

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.ZoneOffset;
import java.time.ZonedDateTime;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.concurrent.TimeUnit;

class GenerateData {

  private static Random random = new Random();

  static List<String> getMetric(String metric, int number) {
    List<String> element = new ArrayList<>();
    for (int i = 0; i < number; i++) {
      Model m = new Model();
      m.setMeasurement(metric);
      m.addField("field1", random.nextInt(100));
      m.addField("field2", random.nextInt(100));
      LocalDateTime time =
          LocalDateTime.of(
              LocalDate.now(ZoneOffset.UTC),
              LocalTime.of(
                  random.nextInt(24),
                  random.nextInt(60),
                  random.nextInt(60),
                  random.nextInt(999999999 + 1)));
      ZonedDateTime zdt = time.atZone(ZoneOffset.UTC);
      m.setTime(zdt.toInstant().toEpochMilli());
      m.setTimeUnit(TimeUnit.MILLISECONDS);
      element.add(m.getLineProtocol());
    }
    return element;
  }

  static List<String> getMultipleMetric(List<String> metrics, int number) {
    List<String> element = new ArrayList<>();
    for (String metric : metrics) {
      for (int i = 0; i < number; i++) {
        Model m = new Model();
        m.setMeasurement(metric);
        m.addField("field1", random.nextInt(100));
        m.addField("field2", random.nextInt(100));
        LocalDateTime time =
            LocalDateTime.of(
                LocalDate.now(ZoneOffset.UTC),
                LocalTime.of(
                    random.nextInt(24),
                    random.nextInt(60),
                    random.nextInt(60),
                    random.nextInt(999999999 + 1)));
        ZonedDateTime zdt = time.atZone(ZoneOffset.UTC);
        m.setTime(zdt.toInstant().toEpochMilli());
        m.setTimeUnit(TimeUnit.MILLISECONDS);
        element.add(m.getLineProtocol());
      }
    }
    return element;
  }
}
