/*
    * Copyright 2019-2022 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.bremersee.comparator.model;
  
  import java.io.StringWriter;
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Set;
  import jakarta.xml.bind.SchemaOutputResolver;
  import javax.xml.transform.Result;
  import javax.xml.transform.stream.StreamResult;
  
  /**
   * The buffer schema output resolver.
   *
   * @author Christian Bremer
   */
  @SuppressWarnings({"WeakerAccess", "unused"})
  public class BufferSchemaOutputResolver extends SchemaOutputResolver {
  
    /**
     * The buffers.
     */
    protected Map<String, StreamResult> buffers = new HashMap<>();
  
    @Override
    public Result createOutput(String namespaceUri, String suggestedFileName) {
      StringWriter out = new StringWriter();
      StreamResult res = new StreamResult(out);
      res.setSystemId(suggestedFileName);
      buffers.put(namespaceUri, res);
      return res;
    }
  
    /**
     * Gets namespaces.
     *
     * @return the namespaces
     */
    public Set<String> getNamespaces() {
      return buffers.keySet();
    }
  
    /**
     * Gets schema.
     *
     * @param namespaceUri the namespace uri
     * @return the schema
     */
    public String getSchema(String namespaceUri) {
      return buffers.get(namespaceUri).getWriter().toString();
    }
  
    /**
     * Gets system id.
     *
     * @param namespaceUri the namespace uri
     * @return the system id
     */
    public String getSystemId(String namespaceUri) {
      return buffers.get(namespaceUri).getSystemId();
    }
  
    @Override
    public String toString() {
      StringBuilder sb = new StringBuilder();
      for (String s : buffers.keySet()) {
        sb.append("***** Begin schema ").append(s).append(", system-id=").append(getSystemId(s))
            .append(" *****");
        sb.append(System.getProperty("line.separator"));
        sb.append(getSchema(s));
        sb.append("***** End schema ").append(s).append(" *****");
        sb.append(System.getProperty("line.separator"));
        sb.append(System.getProperty("line.separator"));
      }
      return sb.toString();
    }
  
    /**
     * Clear.
     */
    public void clear() {
      buffers.clear();
    }
  
 }