/*
 * Copyright 2005-2010 the original author or authors.
 * 
 * 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.wamblee.system.adapters;

import org.wamblee.system.core.DefaultProvidedInterface;
import org.wamblee.system.core.ProvidedInterface;
import org.wamblee.system.core.RequiredInterface;
import org.wamblee.system.core.Scope;

import java.util.ArrayList;
import java.util.List;

/**
 * The class configuration encapsulates the knowledge of how to wrap a class as
 * a component.
 * 
 * @author Erik Brakkee
 */
public class ClassConfiguration {
    private Class clazz;

    private ConstructorConfiguration constructorConfig;

    private ObjectConfiguration objectConfig;

    /**
     * Constructs the configuration. By default no constructor is selected and
     * one of {@link #select(Class...)} or {@link #greedy()} must be called.
     * 
     * @param aClass
     *            Class to construct.
     */
    public ClassConfiguration(Class aClass) {
        clazz = aClass;
        constructorConfig = new ConstructorConfiguration(aClass);
        objectConfig = new ObjectConfiguration(aClass);
    }

    public ConstructorConfiguration getConstructorConfig() {
        return constructorConfig;
    }

    public ObjectConfiguration getObjectConfig() {
        return objectConfig;
    }

    /**
     * Creates the object in the given scope.
     * 
     * @param aScope
     *            Scope containing required interfaces for this object.
     * 
     * @return object.
     */
    public Object create(Scope aScope) {
        return constructorConfig.create(aScope);
    }

    /**
     * Injects required interfaces through the setters
     * 
     * @param aScope
     *            Scope in which injection takes place.
     * @param aObject
     *            Object to inject into.
     */
    public void inject(Scope aScope, Object aObject) {
        objectConfig.inject(aScope, aObject);
    }

    public List<ProvidedInterface> getProvidedInterfaces() {
        List<ProvidedInterface> result = new ArrayList<ProvidedInterface>();
        result.add(new DefaultProvidedInterface("provided", clazz));

        return result;
    }

    public List<RequiredInterface> getRequiredInterfaces() {
        List<RequiredInterface> result = new ArrayList<RequiredInterface>();
        result.addAll(constructorConfig.getRequiredInterfaces());
        result.addAll(objectConfig.getRequiredInterfaces());

        return result;
    }
}