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/*-
 * ========================LICENSE_START=================================
 * smooks-javabean-cartridge
 * %%
 * Copyright (C) 2020 Smooks
 * %%
 * Licensed under the terms of the Apache License Version 2.0, or
 * the GNU Lesser General Public License version 3.0 or later.
 *
 * SPDX-License-Identifier: Apache-2.0 OR LGPL-3.0-or-later
 *
 * ======================================================================
 *
 * 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.
 *
 * ======================================================================
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 * =========================LICENSE_END==================================
 */
package org.smooks.cartridges.javabean.dynamic.resolvers;

import org.smooks.cartridges.javabean.dynamic.Descriptor;
import org.smooks.support.ClassUtils;
import org.xml.sax.EntityResolver;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

import java.io.InputStream;
import java.util.List;
import java.util.Properties;

/**
 * Abstract descriptor resource resolver.
 *
 * @author [email protected]
 */
public abstract class AbstractResolver implements EntityResolver {

    protected List descriptors;
    protected ClassLoader classLoader = AbstractResolver.class.getClassLoader();

    protected AbstractResolver(List descriptors) {
        this.descriptors = descriptors;
    }

    protected List getDescriptors() {
        return descriptors;
    }

    public ClassLoader getClassLoader() {
        return classLoader;
    }

    public void setClassLoader(ClassLoader classLoader) {
        this.classLoader = classLoader;
    }

    protected InputSource resolveSchemaLocation(String systemId) throws SAXException {
        String namespaceId = Descriptor.getNamespaceId(systemId, descriptors);

        if (namespaceId != null) {
            String schemaLocation = Descriptor.getSchemaLocation(namespaceId, descriptors);

            if (schemaLocation == null) {
                throw new SAXException("Failed to resolve schemaLocation for namespace '" + systemId + "'.");
            }

            InputStream stream = ClassUtils.getResourceAsStream(schemaLocation, classLoader);

            if (stream == null) {
                throw new SAXException("schemaLocation '" + schemaLocation + "' for namespace '" + systemId + "' does not resolve to a Classpath resource.");
            }

            return new InputSource(stream);
        } else {
            return null;
        }
    }

    protected InputSource resolveBindingConfigLocation(String systemId) throws SAXException {
        String namespaceId = Descriptor.getNamespaceId(systemId, descriptors);

        if (namespaceId != null) {
            String bindingConfigLocation = Descriptor.getBindingConfigLocation(namespaceId, descriptors);

            if (bindingConfigLocation == null) {
                throw new SAXException("Failed to resolve bindingConfigLocation for namespace '" + systemId + "'.");
            }

            InputStream stream = ClassUtils.getResourceAsStream(bindingConfigLocation, classLoader);

            if (stream == null) {
                throw new SAXException("bindingConfigLocation '" + bindingConfigLocation + "' for namespace '" + systemId + "' does not resolve to a Classpath resource.");
            }

            return new InputSource(stream);
        } else {
            return null;
        }
    }
}