/*
    * #%L
    * wcm.io
    * %%
    * Copyright (C) 2018 wcm.io
    * %%
    * 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.
   * #L%
   */
  package io.wcm.devops.conga.plugins.aem.maven.model;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.yaml.snakeyaml.Yaml;
  import org.yaml.snakeyaml.constructor.Constructor;
  
  import io.wcm.devops.conga.generator.spi.context.PluginContextOptions;
  import io.wcm.devops.conga.generator.spi.yaml.YamlConstructorPlugin;
  import io.wcm.devops.conga.generator.spi.yaml.context.YamlConstructorContext;
  import io.wcm.devops.conga.generator.util.PluginManager;
  import io.wcm.devops.conga.generator.util.PluginManagerImpl;
  
  final class YamlUtil {
  
    private YamlUtil() {
      // static methods only
    }
  
    private static final Logger log = LoggerFactory.getLogger(YamlUtil.class);
  
    public static Yaml createYaml() {
      // initialize CONGA plugin manager
      PluginManager pluginManager = new PluginManagerImpl();
      PluginContextOptions options = new PluginContextOptions()
          .pluginManager(pluginManager)
          .logger(log);
  
      // apply YAML plugins for modifying YAML constructor
      Constructor constructor = new Constructor(io.wcm.devops.conga.model.util.YamlUtil.createLoaderOptions());
      YamlConstructorContext context = new YamlConstructorContext()
          .pluginContextOptions(options)
          .yamlConstructor(constructor);
      for (YamlConstructorPlugin plugin : pluginManager.getAll(YamlConstructorPlugin.class)) {
        plugin.register(context);
      }
  
      return new Yaml(constructor);
    }
  
  }