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/*
 * Copyright 2019 Red Hat
 *
 * 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 io.apicurio.datamodels.openapi.visitors;

import io.apicurio.datamodels.compat.NodeCompat;
import io.apicurio.datamodels.core.Constants;
import io.apicurio.datamodels.core.models.common.IDefinition;
import io.apicurio.datamodels.core.models.common.IExample;
import io.apicurio.datamodels.core.visitors.NodePathVisitor;
import io.apicurio.datamodels.openapi.models.IOasPropertySchema;
import io.apicurio.datamodels.openapi.models.OasHeader;
import io.apicurio.datamodels.openapi.models.OasPathItem;
import io.apicurio.datamodels.openapi.models.OasPaths;
import io.apicurio.datamodels.openapi.models.OasResponse;
import io.apicurio.datamodels.openapi.models.OasResponses;
import io.apicurio.datamodels.openapi.models.OasSchema;
import io.apicurio.datamodels.openapi.models.OasXML;

/**
 * @author [email protected]
 */
public class OasNodePathVisitor extends NodePathVisitor implements IOasVisitor {
    
    /**
     * Constructor.
     */
    public OasNodePathVisitor() {
    }

    /**
     * @see io.apicurio.datamodels.openapi.visitors.IOasVisitor#visitPaths(io.apicurio.datamodels.openapi.models.OasPaths)
     */
    @Override
    public void visitPaths(OasPaths node) {
        this.path.prependSegment(Constants.PROP_PATHS, false);
    }

    /**
     * @see io.apicurio.datamodels.openapi.visitors.IOasVisitor#visitPathItem(io.apicurio.datamodels.openapi.models.OasPathItem)
     */
    @Override
    public void visitPathItem(OasPathItem node) {
        this.path.prependSegment(node.getPath(), true);
    }

    /**
     * @see io.apicurio.datamodels.openapi.visitors.IOasVisitor#visitResponses(io.apicurio.datamodels.openapi.models.OasResponses)
     */
    @Override
    public void visitResponses(OasResponses node) {
        this.path.prependSegment(Constants.PROP_RESPONSES, false);
    }

    /**
     * @see io.apicurio.datamodels.openapi.visitors.IOasVisitor#visitResponse(io.apicurio.datamodels.openapi.models.OasResponse)
     */
    @Override
    public void visitResponse(OasResponse node) {
        if (node.getName() == null) {
            this.path.prependSegment(Constants.PROP_DEFAULT, false);
        } else {
            this.path.prependSegment(node.getName(), true);
        }
    }

    /**
     * @see io.apicurio.datamodels.openapi.visitors.IOasVisitor#visitXML(io.apicurio.datamodels.openapi.models.OasXML)
     */
    @Override
    public void visitXML(OasXML node) {
        this.path.prependSegment(Constants.PROP_XML, false);
    }

    /**
     * @see io.apicurio.datamodels.openapi.visitors.IOasVisitor#visitAllOfSchema(io.apicurio.datamodels.openapi.models.OasSchema)
     */
    @Override
    public void visitAllOfSchema(OasSchema node) {
        int idx = NodeCompat.indexOf(node, node.parent(), Constants.PROP_ALL_OF);
        if (idx != -1) {
            this.path.prependSegment(String.valueOf(idx), true);
            this.path.prependSegment(Constants.PROP_ALL_OF, false);
        }
    }

    /**
     * @see io.apicurio.datamodels.openapi.visitors.IOasVisitor#visitItemsSchema(io.apicurio.datamodels.openapi.models.OasSchema)
     */
    @Override
    public void visitItemsSchema(OasSchema node) {
        if (node.hasItemsSchemas()) {
            int idx = NodeCompat.indexOf(node, node.parent(), Constants.PROP_ITEMS);
            if (idx != -1) {
                this.path.prependSegment(String.valueOf(idx), true);
                this.path.prependSegment(Constants.PROP_ITEMS, false);
            }
        } else {
            this.path.prependSegment(Constants.PROP_ITEMS, false);
        }
    }

    /**
     * @see io.apicurio.datamodels.openapi.visitors.IOasVisitor#visitAdditionalPropertiesSchema(io.apicurio.datamodels.openapi.models.OasSchema)
     */
    @Override
    public void visitAdditionalPropertiesSchema(OasSchema node) {
        this.path.prependSegment(Constants.PROP_ADDITIONAL_PROPERTIES, false);
    }

    /**
     * @see io.apicurio.datamodels.openapi.visitors.IOasVisitor#visitPropertySchema(io.apicurio.datamodels.openapi.models.IOasPropertySchema)
     */
    @Override
    public void visitPropertySchema(IOasPropertySchema node) {
        this.path.prependSegment(node.getPropertyName(), true);
        this.path.prependSegment(Constants.PROP_PROPERTIES, false);
    }

    /**
     * @see io.apicurio.datamodels.openapi.visitors.IOasVisitor#visitHeader(io.apicurio.datamodels.openapi.models.OasHeader)
     */
    @Override
    public void visitHeader(OasHeader node) {
        this.path.prependSegment(node.getName(), true);
    }

    /**
     * @see io.apicurio.datamodels.openapi.visitors.IOasVisitor#visitResponseDefinition(io.apicurio.datamodels.core.models.common.IDefinition)
     */
    @Override
    public void visitResponseDefinition(IDefinition node) {
        this.path.prependSegment(node.getName(), true);
    }
    
    /**
     * @see io.apicurio.datamodels.openapi.visitors.IOasVisitor#visitExample(io.apicurio.datamodels.core.models.common.IExample)
     */
    @Override
    public void visitExample(IExample node) {
        throw new RuntimeException("Must be implemented by subclasses.");
    }

}