/*
 * 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.apm.plugin.vertx3;

import io.netty.buffer.ByteBuf;
import io.vertx.core.http.HttpServerResponse;
import org.apache.skywalking.apm.agent.core.context.ContextManager;
import org.apache.skywalking.apm.agent.core.context.tag.Tags;
import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.EnhancedInstance;
import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.InstanceConstructorInterceptor;
import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.InstanceMethodsAroundInterceptor;
import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.MethodInterceptResult;

import java.lang.reflect.Method;

public class HttpServerResponseImplInterceptor implements InstanceMethodsAroundInterceptor,
        InstanceConstructorInterceptor {

    @Override
    public void onConstruct(EnhancedInstance objInst, Object[] allArguments) {
        objInst.setSkyWalkingDynamicField(((EnhancedInstance) allArguments[1]).getSkyWalkingDynamicField());
    }

    @Override
    public void beforeMethod(EnhancedInstance objInst, Method method, Object[] allArguments, Class<?>[] argumentsTypes,
        MethodInterceptResult result) throws Throwable {
        if (VertxContext.VERTX_VERSION < 36 && allArguments[0] instanceof ByteBuf
                || VertxContext.VERTX_VERSION >= 36 && VertxContext.VERTX_VERSION <= 37 || allArguments.length == 2) {
            VertxContext context = (VertxContext) objInst.getSkyWalkingDynamicField();
            int statusCode = ((HttpServerResponse) objInst).getStatusCode();
            Tags.HTTP_RESPONSE_STATUS_CODE.set(context.getSpan(), statusCode);
            if (statusCode >= 400) {
                context.getSpan().errorOccurred();
            }
            context.getSpan().asyncFinish();
        }
    }

    @Override
    public Object afterMethod(EnhancedInstance objInst, Method method, Object[] allArguments, Class<?>[] argumentsTypes,
        Object ret) throws Throwable {
        return ret;
    }

    @Override
    public void handleMethodException(EnhancedInstance objInst, Method method, Object[] allArguments,
        Class<?>[] argumentsTypes, Throwable t) {
        ContextManager.activeSpan().log(t);
    }
}
