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/*
 * Copyright 2014-2015 Objectos, Fábrica de Software LTDA.
 *
 * 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 br.com.objectos.way.pojo.plugin;

import java.lang.annotation.Annotation;
import java.util.Arrays;
import java.util.ServiceLoader;
import java.util.Set;

import javax.annotation.processing.RoundEnvironment;
import javax.lang.model.element.TypeElement;

import br.com.objectos.way.code.Artifact;
import br.com.objectos.way.code.ProcessorListener;
import br.com.objectos.way.code.TypeInfo;

/**
 * @author [email protected] (Marcio Endo)
 */
public abstract class AbstractAnnotationProcessor
    extends br.com.objectos.way.code.AbstractAnnotationProcessor
    implements ProcessorListener {

  private final Iterable pluginList;

  protected AbstractAnnotationProcessor() {
    pluginList = ServiceLoader.load(Plugin.class, getClass().getClassLoader());
  }

  protected AbstractAnnotationProcessor(Plugin... plugins) {
    pluginList = Arrays.asList(plugins);
  }

  @Override
  public void onStart(Set typeElements, RoundEnvironment roundEnv) {
    PojoInfo.invalidate();
    Naming.invalidate();
    Property.invalidate();

    for (Plugin plugin : pluginList) {
      plugin.onStart();
    }
  }

  @Override
  protected final br.com.objectos.way.code.Configuration configuration() {
    return br.com.objectos.way.code.Configuration.builder()
        .addAnnotationType(annotationType())
        .addTypeInfoArtifactGenerator(this::generate)
        .listener(this)
        .build();
  }

  protected abstract Class annotationType();

  protected Mode processorMode() {
    return Mode.STANDARD;
  }

  private Artifact generate(TypeInfo typeInfo) {
    PredicateConfiguration predicate = processorMode().predicateConfiguration(typeInfo);

    for (Plugin plugin : pluginList) {
      plugin.configure(predicate);
    }

    for (Plugin plugin : pluginList) {
      plugin.onConfigure();
    }

    RecordingConfiguration recording = predicate.toRecordingConfiguration();
    recording.generatedBy(getClass());

    for (Plugin plugin : pluginList) {
      plugin.configure(recording);
    }

    return recording.generate();
  }

}