/**
 * 
 * Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
 * 
 * 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 org.apache.tuscany.container.java.builder;

import org.apache.tuscany.container.java.config.JavaComponentRuntimeConfiguration;
import org.apache.tuscany.container.java.invocation.ScopedJavaComponentInvoker;
import org.apache.tuscany.core.builder.BuilderConfigException;
import org.apache.tuscany.core.builder.WireBuilder;
import org.apache.tuscany.core.context.ScopeContext;
import org.apache.tuscany.core.invocation.InvocationConfiguration;
import org.apache.tuscany.core.invocation.spi.ProxyFactory;
import org.apache.tuscany.core.runtime.RuntimeContext;
import org.apache.tuscany.core.system.annotation.Autowire;
import org.osoa.sca.annotations.Init;
import org.osoa.sca.annotations.Scope;

/**
 * Completes a wire to a Java-based target component by adding a scoped java invoker to the source chain
 * 
 * @version $Rev$ $Date$
 */
@Scope("MODULE")
public class JavaTargetWireBuilder implements WireBuilder {

    private RuntimeContext runtimeContext;

    @Autowire
    public void setRuntimeContext(RuntimeContext context) {
        runtimeContext = context;
    }

    public JavaTargetWireBuilder() {
    }

    @Init(eager=true)
    public void init() {
        runtimeContext.addBuilder(this);
    }

    public void connect(ProxyFactory sourceFactory, ProxyFactory targetFactory, Class targetType, boolean downScope,
            ScopeContext targetScopeContext) throws BuilderConfigException {
        if (!(JavaComponentRuntimeConfiguration.class.isAssignableFrom(targetType))) {
            return;
        }
        for (InvocationConfiguration sourceInvocationConfig : sourceFactory.getProxyConfiguration().getInvocationConfigurations()
                .values()) {
            ScopedJavaComponentInvoker invoker = new ScopedJavaComponentInvoker(sourceFactory.getProxyConfiguration()
                    .getTargetName(), sourceInvocationConfig.getMethod(), targetScopeContext);
            if (downScope) {
                // the source scope is shorter than the target, so the invoker can cache the target instance
                invoker.setCacheable(false);
            } else {
                invoker.setCacheable(true); //TODO set to true
            }
            sourceInvocationConfig.setTargetInvoker(invoker);
        }
    }

    public void completeTargetChain(ProxyFactory targetFactory, Class targetType, ScopeContext targetScopeContext)
            throws BuilderConfigException {
        // TODO implement.
        // if (!(JavaComponentRuntimeConfiguration.class.isAssignableFrom(targetType))) {
        // return;
        // }
        // for (InvocationConfiguration targetInvocationConfig :
        // targetFactory.getProxyConfiguration().getInvocationConfigurations()
        // .values()) {
        // ScopedJavaComponentInvoker invoker = new ScopedJavaComponentInvoker(targetFactory.getProxyConfiguration()
        // .getTargetName(), ((JavaOperationType) targetInvocationConfig.getOperationType()).getJavaMethod(),
        // targetScopeContext);
        // targetInvocationConfig.setTargetInvoker(invoker);
        // }
    }
}