/*
 * Copyright 2015 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.gradle.model.internal.core;

import com.google.common.base.Optional;
import org.gradle.model.internal.manage.schema.ModelProperty;
import org.gradle.model.internal.type.ModelType;

public class NodeInitializerContext<T, P, O> {
    private final ModelType<T> modelType;
    private final Optional<PropertyContext<P, O>> propertyContextOptional;

    public NodeInitializerContext(ModelType<T> modelType, Optional<PropertyContext<P, O>> propertyContextOptional) {
        this.modelType = modelType;
        this.propertyContextOptional = propertyContextOptional;
    }

    public static <T, P, O> NodeInitializerContext<T, P, O> forType(ModelType<T> modelType) {
        return new NodeInitializerContext<T, P, O>(modelType, Optional.<PropertyContext<P, O>>absent());
    }

    public static <T, P, O> NodeInitializerContext<T, P, O> forProperty(ModelType<T> modelType, ModelProperty<P> modelProperty, ModelType<O> containingType) {
        return new NodeInitializerContext<T, P, O>(modelType, Optional.of(new PropertyContext<P, O>(modelProperty, containingType)));
    }

    public ModelType<T> getModelType() {
        return modelType;
    }

    public Optional<PropertyContext<P, O>> getPropertyContextOptional() {
        return propertyContextOptional;
    }

    static class PropertyContext<P, O> {
        private final ModelProperty<P> modelProperty;
        private final ModelType<O> declaringType;

        private PropertyContext(ModelProperty<P> modelProperty, ModelType<O> declaringType) {
            this.modelProperty = modelProperty;
            this.declaringType = declaringType;
        }

        public ModelProperty<P> getModelProperty() {
            return modelProperty;
        }

        public ModelType<O> getDeclaringType() {
            return declaringType;
        }
    }
}
