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/**
 * Copyright 2018 The original 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 io.dekorate.halkyon.generator;

import java.lang.annotation.Annotation;
import java.util.Map;

import javax.lang.model.element.Element;

import io.dekorate.Generator;
import io.dekorate.Session;
import io.dekorate.WithProject;
import io.dekorate.config.ConfigurationSupplier;
import io.dekorate.config.AnnotationConfiguration;
import io.dekorate.config.PropertyConfiguration;
import io.dekorate.halkyon.adapter.CapabilityConfigAdapter;
import io.dekorate.halkyon.annotation.HalkyonCapability;
import io.dekorate.halkyon.config.CapabilityConfig;
import io.dekorate.halkyon.handler.CapabilityHandler;

public interface CapabilityConfigGenerator extends Generator, WithProject {
  
  String GENERATOR_KEY = "capability";
  
  default String getKey() {
    return GENERATOR_KEY;
  }

  default Class getAnnotation() {
    return HalkyonCapability.class;
  }


  @Override
  default void add(Map map) {
    add(new PropertyConfiguration<>(
      CapabilityConfigAdapter
        .newBuilder(propertiesMap(map, HalkyonCapability.class))));
  }
  
  @Override
  default void add(Element element) {
    HalkyonCapability capability = element.getAnnotation(HalkyonCapability.class);
    add(capability != null
      ? new AnnotationConfiguration<>(CapabilityConfigAdapter.newBuilder(capability))
      : new AnnotationConfiguration<>(CapabilityConfig.newCapabilityConfigBuilder()));
  }
  
  default void add(ConfigurationSupplier config) {
    Session session = getSession();
    session.configurators().add(config);
    session.handlers().add(new CapabilityHandler(session.resources()));
  }
}