/*
 * 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.skywalking.oap.server.receiver.telegraf.provider.handler.pojo;

import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.linecorp.armeria.common.AggregatedHttpRequest;
import com.linecorp.armeria.common.annotation.Nullable;
import com.linecorp.armeria.server.ServiceRequestContext;
import com.linecorp.armeria.server.annotation.RequestConverterFunction;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.lang.reflect.ParameterizedType;
import java.util.List;

@Data
@NoArgsConstructor
@AllArgsConstructor
@JsonIgnoreProperties(ignoreUnknown = true)
public class TelegrafData implements RequestConverterFunction {
    private List<TelegrafDatum> metrics;
    private static final ObjectMapper MAPPER = new ObjectMapper();

    @Override
    public @Nullable Object convertRequest(ServiceRequestContext ctx, AggregatedHttpRequest request, Class<?> expectedResultType,
                                           @Nullable ParameterizedType expectedParameterizedResultType) throws Exception {

        if (expectedResultType == TelegrafData.class) {
            // Convert the request to a TelegrafData object
            return MAPPER.readValue(request.contentUtf8(), TelegrafData.class);
        }
        return RequestConverterFunction.fallthrough();
    }
}
