/*
 * 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.jetty.v9.client.define;

import net.bytebuddy.description.method.MethodDescription;
import net.bytebuddy.matcher.ElementMatcher;
import org.apache.skywalking.apm.agent.core.plugin.WitnessMethod;
import org.apache.skywalking.apm.agent.core.plugin.interceptor.ConstructorInterceptPoint;
import org.apache.skywalking.apm.agent.core.plugin.interceptor.InstanceMethodsInterceptPoint;
import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.ClassInstanceMethodsEnhancePluginDefine;
import org.apache.skywalking.apm.agent.core.plugin.match.ClassMatch;
import org.apache.skywalking.apm.agent.core.plugin.match.NameMatch;

import java.util.Collections;
import java.util.List;

import static net.bytebuddy.matcher.ElementMatchers.named;
import static net.bytebuddy.matcher.ElementMatchers.takesArguments;

/**
 * {@link HttpRequestInstrumentation} enhance the <code>send</code> method without argument in
 * <code>org.eclipse.jetty.client.HttpRequest</code> by
 * <code>org.apache.skywalking.apm.plugin.jetty.client.SyncHttpRequestSendInterceptor</code> and enhance the
 * <code>send</code> with <code>org.eclipse.jetty.client.api.Response$CompleteListener</code> parameter by
 * <code>org.apache.skywalking.apm.plugin.jetty.client.AsyncHttpRequestSendInterceptor</code>
 */
public class HttpRequestInstrumentation extends ClassInstanceMethodsEnhancePluginDefine {

    private static final String ENHANCE_CLASS = "org.eclipse.jetty.client.HttpRequest";
    private static final String ENHANCE_CLASS_NAME = "send";
    public static final String SYNC_SEND_INTERCEPTOR =
            "org.apache.skywalking.apm.plugin.jetty.v9.client.SyncHttpRequestSendInterceptor";

    public static final String ASYNC_SEND_INTERCEPTOR =
            "org.apache.skywalking.apm.plugin.jetty.v9.client.AsyncHttpRequestSendInterceptor";

    @Override
    public ConstructorInterceptPoint[] getConstructorsInterceptPoints() {
        return new ConstructorInterceptPoint[0];
    }

    @Override
    public InstanceMethodsInterceptPoint[] getInstanceMethodsInterceptPoints() {
        return new InstanceMethodsInterceptPoint[] {
            new InstanceMethodsInterceptPoint() {
                // sync call interceptor point
                @Override
                public ElementMatcher<MethodDescription> getMethodsMatcher() {
                    return named(ENHANCE_CLASS_NAME).and(takesArguments(0));
                }

                @Override
                public String getMethodsInterceptor() {
                    return SYNC_SEND_INTERCEPTOR;
                }

                @Override
                public boolean isOverrideArgs() {
                    return false;
                }
            },
            new InstanceMethodsInterceptPoint() {
                // async call interceptor point
                @Override
                public ElementMatcher<MethodDescription> getMethodsMatcher() {
                    return named(ENHANCE_CLASS_NAME).and(takesArguments(1));
                }

                @Override
                public String getMethodsInterceptor() {
                    return ASYNC_SEND_INTERCEPTOR;
                }

                @Override
                public boolean isOverrideArgs() {
                    return true;
                }
            }
        };
    }

    @Override
    protected ClassMatch enhanceClass() {
        return NameMatch.byName(ENHANCE_CLASS);
    }

    @Override
    protected String[] witnessClasses() {
        return new String[] {"org.eclipse.jetty.client.AbstractHttpClientTransport"};
    }

    @Override
    protected List<WitnessMethod> witnessMethods() {
        return Collections.singletonList(new WitnessMethod(
                "org.eclipse.jetty.http.HttpFields",
                named("getQuality")
        ));
    }
}
