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/*
 * Copyright 2014 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.auto.pojo;

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

import br.com.objectos.way.code.AbstractAnnotationProcessor;
import br.com.objectos.way.code.ClassInfo;
import br.com.objectos.way.code.CodeCanvasArtifact;
import br.com.objectos.way.code.CodeCanvasWriter;
import br.com.objectos.way.code.TypeInfo;
import br.com.objectos.way.code.mustache.Writers;
import br.com.objectos.way.code.pojo.PojoBuilderContext;
import br.com.objectos.way.code.pojo.PojoBuilderPojoContext;
import br.com.objectos.way.code.pojo.PojoContext;
import br.com.objectos.way.core.auto.AutoPojo;
import br.com.objectos.way.core.tmpl.mustache.MustacheObject;

import com.google.common.base.Optional;
import com.google.common.collect.ImmutableList;

/**
 * @author [email protected] (Marcio Endo)
 */
public class AutoPojoProcessor extends AbstractAnnotationProcessor {

  @Override
  protected Class annotationType() {
    return AutoPojo.class;
  }

  @Override
  protected boolean shouldProcessMethods() {
    return false;
  }

  @Override
  protected boolean shouldProcessTypes() {
    return true;
  }

  @Override
  protected List toArtifactList(TypeInfo typeInfo) {
    List artifactList = ImmutableList.of();

    Optional maybeClassInfo = typeInfo.toClassInfo();
    if (maybeClassInfo.isPresent()) {
      ClassInfo classInfo = maybeClassInfo.get();
      artifactList = toArtifactList(classInfo);
    }

    return artifactList;
  }

  private List toArtifactList(ClassInfo classInfo) {
    return ImmutableList. builder()
        .add(pojo(classInfo))
        .add(builder(classInfo))
        .add(builderPojo(classInfo))
        .build();
  }

  private CodeCanvasArtifact pojo(ClassInfo classInfo) {
    MustacheObject context = new PojoContext(getClass(), classInfo).get();
    return CodeCanvasWriter.forTemplate("/way-code-pojo/Pojo.mustache")
        .namedAfter(classInfo, "Pojo")
        .toCodeCanvasArtifact(Writers.INSTANCE, context);
  }

  private CodeCanvasArtifact builder(ClassInfo classInfo) {
    MustacheObject context = new PojoBuilderContext(getClass(), classInfo).get();
    return CodeCanvasWriter.forTemplate("/way-code-pojo/PojoBuilder.mustache")
        .namedAfter(classInfo, "Builder")
        .toCodeCanvasArtifact(Writers.INSTANCE, context);
  }

  private CodeCanvasArtifact builderPojo(ClassInfo classInfo) {
    MustacheObject context = new PojoBuilderPojoContext(getClass(), classInfo).get();
    return CodeCanvasWriter.forTemplate("/way-code-pojo/PojoBuilderPojo.mustache")
        .namedAfter(classInfo, "BuilderPojo")
        .toCodeCanvasArtifact(Writers.INSTANCE, context);
  }

}