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package com.aliyun.datahub.client.impl.serializer;

import com.aliyun.datahub.client.impl.request.GetTopicMetricRequest;
import com.aliyun.datahub.client.model.MetricType;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;

import java.io.IOException;
import java.util.List;

public class GetTopicMetricRequestSerializer extends JsonSerializer {
    @Override
    public void serialize(GetTopicMetricRequest getTopicMetricRequest, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException, JsonProcessingException {
        jsonGenerator.writeStartObject();

        jsonGenerator.writeStringField("Action", getTopicMetricRequest.getAction());

        jsonGenerator.writeNumberField("StartTime", getTopicMetricRequest.getStartTime());
        jsonGenerator.writeNumberField("EndTime", getTopicMetricRequest.getEndTime());

        List metricTypes = getTopicMetricRequest.getMetricTypes();
        if (metricTypes != null && !metricTypes.isEmpty()) {
            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < metricTypes.size(); ++i) {
                if (i != 0) {
                    sb.append(",");
                }
                sb.append(metricTypes.get(i).getTitle());
            }
            jsonGenerator.writeStringField("MetricType", sb.toString());
        }
        jsonGenerator.writeStringField("TimeGranularity", getTopicMetricRequest.getTimeGranularity().name());
        jsonGenerator.writeStringField("AggType", getTopicMetricRequest.getAggType().name());

        jsonGenerator.writeEndObject();
    }
}