/*
 * 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.metadata.cache;

import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.TYPE;

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

import javax.enterprise.context.NormalScope;
import javax.inject.Scope;

import org.jboss.weld.annotated.enhanced.EnhancedAnnotation;
import org.jboss.weld.logging.ReflectionLogger;
import org.jboss.weld.util.collections.Arrays2;

/**
 * Model of a scope
 *
 * @author Pete Muir
 */
public class ScopeModel<T extends Annotation> extends AnnotationModel<T> {

    private static final Set<Class<? extends Annotation>> META_ANNOTATIONS = Arrays2.asSet(Scope.class, NormalScope.class);

    private final boolean normal;
    private final boolean passivating;

    /**
     * Constructor
     *
     * @param scope The scope type
     */
    public ScopeModel(EnhancedAnnotation<T> enhancedAnnotatedAnnotation) {
        super(enhancedAnnotatedAnnotation);
        if (isValid()) {
            if (enhancedAnnotatedAnnotation.isAnnotationPresent(NormalScope.class)) {
                this.passivating = enhancedAnnotatedAnnotation.getAnnotation(NormalScope.class).passivating();
                this.normal = true;
            } else {
                this.normal = false;
                this.passivating = false;
            }
        } else {
            this.normal = false;
            this.passivating = false;
        }
    }

    @Override
    protected void check(EnhancedAnnotation<T> annotatedAnnotation) {
        super.check(annotatedAnnotation);
        if (isValid()) {
            if (!annotatedAnnotation.isAnnotationPresent(Target.class)) {
                ReflectionLogger.LOG.missingTarget(annotatedAnnotation);
            } else if (!Arrays2.unorderedEquals(annotatedAnnotation.getAnnotation(Target.class).value(), METHOD, FIELD, TYPE)) {
                ReflectionLogger.LOG.missingTargetMethodFieldType(annotatedAnnotation);
            }
        }
    }

    /**
     * Indicates if the scope is "normal"
     *
     * @return True if normal, false otherwise
     */
    public boolean isNormal() {
        return normal;
    }

    /**
     * Indicates if the scope is "passivating"
     *
     * @return True if passivating, false otherwise
     */
    public boolean isPassivating() {
        return passivating;
    }

    /**
     * Gets the corresponding meta-annotation type class
     *
     * @return The ScopeType class
     */
    @Override
    protected Set<Class<? extends Annotation>> getMetaAnnotationTypes() {
        return META_ANNOTATIONS;
    }

    /**
     * Gets a string representation of the scope model
     *
     * @return The string representation
     */
    @Override
    public String toString() {
        String valid = isValid() ? "Valid " : "Invalid";
        String normal = isNormal() ? "normal " : "non-normal ";
        String passivating = isPassivating() ? "passivating " : "pon-passivating ";
        return valid + normal + passivating + " scope model for " + getRawType();
    }

}