/*
 * Copyright 2020 Google LLC
 *
 * 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 com.example.monitoring;

// CHECKSTYLE OFF: VariableDeclarationUsageDistance
// [START monitoring_quickstart]
import com.google.api.Metric;
import com.google.api.MonitoredResource;
import com.google.cloud.monitoring.v3.MetricServiceClient;
import com.google.monitoring.v3.CreateTimeSeriesRequest;
import com.google.monitoring.v3.Point;
import com.google.monitoring.v3.ProjectName;
import com.google.monitoring.v3.TimeInterval;
import com.google.monitoring.v3.TimeSeries;
import com.google.monitoring.v3.TypedValue;
import com.google.protobuf.util.Timestamps;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class QuickstartSample {

  public static void main(String... args) throws Exception {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "your-project-id";
    quickstart(projectId);
  }

  public static void quickstart(String projectId) throws IOException {
    // Initialize client that will be used to send requests. This client only needs to be created
    // once, and can be reused for multiple requests.
    try (MetricServiceClient metricServiceClient = MetricServiceClient.create()) {

      // Prepares an individual data point
      TimeInterval interval =
          TimeInterval.newBuilder()
              .setEndTime(Timestamps.fromMillis(System.currentTimeMillis()))
              .build();
      TypedValue value = TypedValue.newBuilder().setDoubleValue(123.45).build();
      Point point = Point.newBuilder().setInterval(interval).setValue(value).build();

      List<Point> pointList = new ArrayList<>();
      pointList.add(point);

      ProjectName name = ProjectName.of(projectId);

      // Prepares the metric descriptor
      Map<String, String> metricLabels = new HashMap<>();
      metricLabels.put("store_id", "Pittsburg");
      Metric metric =
          Metric.newBuilder()
              .setType("custom.googleapis.com/stores/daily_sales")
              .putAllLabels(metricLabels)
              .build();

      // Prepares the monitored resource descriptor
      Map<String, String> resourceLabels = new HashMap<>();
      resourceLabels.put("project_id", projectId);
      MonitoredResource resource =
          MonitoredResource.newBuilder().setType("global").putAllLabels(resourceLabels).build();

      // Prepares the time series request
      TimeSeries timeSeries =
          TimeSeries.newBuilder()
              .setMetric(metric)
              .setResource(resource)
              .addAllPoints(pointList)
              .build();
      List<TimeSeries> timeSeriesList = new ArrayList<>();
      timeSeriesList.add(timeSeries);

      CreateTimeSeriesRequest request =
          CreateTimeSeriesRequest.newBuilder()
              .setName(name.toString())
              .addAllTimeSeries(timeSeriesList)
              .build();

      // Writes time series data
      metricServiceClient.createTimeSeries(request);

      System.out.printf("Done writing time series data.%n");
    }
  }
}
// [END monitoring_quickstart]
// CHECKSTYLE ON: VariableDeclarationUsageDistance
