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/*
 * Copyright 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.flat;

import java.util.List;

import javax.lang.model.element.Modifier;

import br.com.objectos.pojo.plugin.Contribution;
import br.com.objectos.pojo.plugin.PojoAction;
import br.com.objectos.pojo.plugin.PojoInfo;

import com.squareup.javapoet.CodeBlock;
import com.squareup.javapoet.MethodSpec;

/**
 * @author [email protected] (Marcio Endo)
 */
enum FlatFilePojoWriteTo implements PojoAction {

  INSTANCE;

  @Override
  public Contribution execute(PojoInfo pojoInfo) {
    return Contribution.builder()
        .addMethod(get(pojoInfo))
        .build();
  }

  public MethodSpec get(PojoInfo pojoInfo) {
    return MethodSpec.methodBuilder(FlatFilePlugin.writeToMethodName)
        .addModifiers(Modifier.PRIVATE)
        .addParameter(Appendable.class, "out")
        .addCode(body(pojoInfo))
        .build();
  }

  private CodeBlock body(PojoInfo pojoInfo) {
    CodeBlock.Builder body = CodeBlock.builder()
        .addStatement("$1T file = new $1T(out)", FlatFileWriter.class);

    List recordMethodList = FlatFilePojo.of(pojoInfo).recordMethodList;
    for (RecordMethod recordMethod : recordMethodList) {
      recordMethod.flatFileWriteTo(body);
    }

    return body.build();
  }

}