/*-
 * ============LICENSE_START=======================================================
 *  Modification Copyright (C) 2019 Nordix Foundation.
 * ================================================================================
 * 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.
 *
 * SPDX-License-Identifier: Apache-2.0
 * ============LICENSE_END=========================================================
 */

package org.openecomp.core.impl.services;

import org.onap.sdc.tosca.services.YamlUtil;
import org.openecomp.core.converter.ServiceTemplateReaderService;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;

import static org.openecomp.core.converter.datatypes.Constants.*;

public class ServiceTemplateReaderServiceImpl implements ServiceTemplateReaderService {

  private Map<String, Object> readServiceTemplate = new HashMap<>();

  public ServiceTemplateReaderServiceImpl(byte[] serviceTemplateContent){
    this.readServiceTemplate = readServiceTemplate(serviceTemplateContent);
  }

  @Override
  public Map<String, Object> readServiceTemplate(byte[] serviceTemplateContent) {

    return
        new YamlUtil().yamlToObject(new String(serviceTemplateContent), Map.class);

  }

  @Override
  public List<Object> getImports(){
    return Objects.isNull(this.readServiceTemplate.get("imports")) ?
            new ArrayList<>() : (List<Object>) this.readServiceTemplate.get("imports");
  }

  @Override
  public Object getMetadata(){
    return this.readServiceTemplate.get(metadata);
  }

  @Override
  public Object getToscaVersion(){
    return this.readServiceTemplate.get(definitionVersion);
  }

  @Override
  public Map<String, Object> getNodeTypes(){
    return Objects.isNull(this.readServiceTemplate.get(nodeTypes)) ? new HashMap<>()
        :(Map<String, Object>) this.readServiceTemplate.get(nodeTypes);
  }

  @Override
  public Object getTopologyTemplate(){
    return this.readServiceTemplate.get(topologyTemplate);
  }

  @Override
  public Map<String, Object> getNodeTemplates(){
    return Objects.isNull(this.getTopologyTemplate()) ? new HashMap<>()
        : (Map<String, Object>) ((Map<String, Object>)this.getTopologyTemplate()).get(nodeTemplates);
  }

  @Override
  public Map<String, Object> getInputs(){
    return Objects.isNull(this.getTopologyTemplate()) ? new HashMap<>()
        : (Map<String, Object>) ((Map<String, Object>)this.getTopologyTemplate()).get(inputs);
  }

  @Override
  public Map<String, Object> getOutputs(){
    return Objects.isNull(this.getTopologyTemplate()) ? new HashMap<>()
        : (Map<String, Object>) ((Map<String, Object>)this.getTopologyTemplate()).get(outputs);
  }

  @Override
  public Map<String, Object> getSubstitutionMappings(){
    return Objects.isNull(this.getTopologyTemplate()) ? new HashMap<>()
        : (Map<String, Object>) ((Map<String, Object>)this.getTopologyTemplate()).get(substitutionMappings);
  }
}