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/*
 * JBoss, Home of Professional Open Source
 * Copyright 2008, Red Hat, Inc., and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * 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.jboss.weld.bean;

import org.jboss.weld.bootstrap.BeanDeployerEnvironment;
import org.jboss.weld.injection.WeldInjectionPoint;
import org.jboss.weld.manager.BeanManagerImpl;
import org.jboss.weld.metadata.cache.MetaAnnotationStore;
import org.jboss.weld.resolution.QualifierInstance;
import org.jboss.weld.util.Beans;

import javax.enterprise.context.Dependent;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.InjectionPoint;
import javax.enterprise.inject.spi.PassivationCapable;

import java.lang.annotation.Annotation;
import java.util.HashSet;
import java.util.Set;

import static org.jboss.weld.util.reflection.Reflections.cast;

/**
 * Abstract base class with functions specific to RI built-in beans
 *
 * @author Pete Muir
 */
public abstract class RIBean implements Bean, PassivationCapable {

    public static final String BEAN_ID_PREFIX = RIBean.class.getPackage().getName();

    public static final String BEAN_ID_SEPARATOR = "-";

    private final BeanManagerImpl beanManager;

    private final String id;

    private final int hashCode;

    private volatile Set qualifiers;

    protected RIBean(String idSuffix, BeanManagerImpl beanManager) {
        this.beanManager = beanManager;
        this.id = new StringBuilder().append(BEAN_ID_PREFIX).append(BEAN_ID_SEPARATOR).append(beanManager.getId()).append(BEAN_ID_SEPARATOR).append(idSuffix).toString();
        this.hashCode = this.id.hashCode();
    }

    protected BeanManagerImpl getBeanManager() {
        return beanManager;
    }

    public abstract Class getType();

    public Class getBeanClass() {
        return getType();
    }

    public abstract void initialize(BeanDeployerEnvironment environment);

    /**
     * This method is called after the container is started allowing the bean to
     * release any resources that are only required at boot time
     */
    public abstract void cleanupAfterBoot();

    /**
     * In particular cases, the deployer must perform some initialization operations
     * only after all beans have been deployed (e.g. for initializing decorators
     * taking into account the possibility of having custom decorators which are
     * deployed through portable extensions)
     *
     * @param environment
     */
    public abstract void initializeAfterBeanDiscovery();

    public abstract boolean isSpecializing();

    public boolean isDependent() {
        return getScope().equals(Dependent.class);
    }

    public abstract boolean isProxyable();

    public abstract boolean isPassivationCapableBean();

    public abstract boolean isPassivationCapableDependency();

    public abstract boolean isProxyRequired();

    public abstract boolean isPrimitive();

    public abstract Set> getWeldInjectionPoints();

    public Set getInjectionPoints() {
        return cast(getWeldInjectionPoints());
    }

    public abstract RIBean getSpecializedBean();

    @Override
    public boolean equals(Object obj) {
        if (obj instanceof RIBean) {
            RIBean that = (RIBean) obj;
            return this.getId().equals(that.getId());
        } else {
            return false;
        }
    }

    @Override
    public int hashCode() {
        return hashCode;
    }

    public String getId() {
        return id;
    }

    @Override
    public String toString() {
        return id;
    }

    public Set getQualifierInstances() {
        if(qualifiers == null) {
            final MetaAnnotationStore store = beanManager.getServices().get(MetaAnnotationStore.class);
            final Set ret = new HashSet();
            for(Annotation a : getQualifiers()) {
                ret.add(new QualifierInstance(a, store));
            }
            qualifiers = ret;
        }
        return qualifiers;
    }

    public boolean isNormalScoped() {
        return Beans.isNormalScoped(this);
    }
}