/*
 *  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.causeway.core.metamodel.facets.object.introspection;

import java.util.function.BiConsumer;

import org.apache.causeway.applib.annotation.Introspection;
import org.apache.causeway.applib.annotation.Introspection.IntrospectionPolicy;
import org.apache.causeway.commons.internal.exceptions._Exceptions;
import org.apache.causeway.core.metamodel.facetapi.Facet;
import org.apache.causeway.core.metamodel.facetapi.FacetAbstract;
import org.apache.causeway.core.metamodel.facetapi.FacetHolder;

import lombok.Getter;
import org.jspecify.annotations.NonNull;

public abstract class IntrospectionPolicyFacetAbstract
extends FacetAbstract
implements IntrospectionPolicyFacet {

    private static final Class<? extends Facet> type() {
        return IntrospectionPolicyFacet.class;
    }

    @Getter(onMethod_ = {@Override})
    private final @NonNull Introspection introspection;

    protected IntrospectionPolicyFacetAbstract(
            final Introspection introspection,
            final FacetHolder holder) {
        this(introspection, holder, Precedence.DEFAULT);
    }

    protected IntrospectionPolicyFacetAbstract(
            final Introspection introspection,
            final FacetHolder holder,
            final Facet.Precedence precedence) {
        super(IntrospectionPolicyFacetAbstract.type(), holder, precedence);
        this.introspection = introspection;
    }
    
    @Override
    public final IntrospectionPolicy getIntrospectionPolicy() {
        return switch(introspection) {
            case ENCAPSULATION_ENABLED -> IntrospectionPolicy.ENCAPSULATION_ENABLED;
            case ANNOTATION_OPTIONAL -> IntrospectionPolicy.ANNOTATION_OPTIONAL;
            case ANNOTATION_REQUIRED -> IntrospectionPolicy.ANNOTATION_REQUIRED;
            case AS_CONFIGURED -> getConfiguration().getCore().getMetaModel().getIntrospector().getPolicy();
            case NOT_SPECIFIED -> throw _Exceptions.unexpectedCodeReach(); // there must be no such a facet that returns such a case
        };
    }

    @Override
    public void visitAttributes(final BiConsumer<String, Object> visitor) {
        super.visitAttributes(visitor);
        visitor.accept("introspection", introspection.name());
    }
}
