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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.way.code;

import javax.lang.model.element.Modifier;

import com.squareup.javapoet.CodeBlock;
import com.squareup.javapoet.FieldSpec;
import com.squareup.javapoet.FieldSpec.Builder;
import com.squareup.javapoet.TypeName;

/**
 * @author [email protected] (Marcio Endo)
 */
public class MethodInfoFieldWriter {

  private final MethodInfo methodInfo;

  private CodeBlock initializer;
  private Modifier[] modifiers = new Modifier[] {};

  MethodInfoFieldWriter(MethodInfo methodInfo) {
    this.methodInfo = methodInfo;
  }

  public MethodInfoFieldWriter initializer(String format, Object... args) {
    initializer = CodeBlock.builder()
        .add(format, args)
        .build();
    return this;
  }

  public MethodInfoFieldWriter modifiers(Modifier... modifiers) {
    this.modifiers = modifiers;
    return this;
  }

  public FieldSpec write() {
    Builder field = FieldSpec.builder(type(), name(), modifiers);

    if (initializer != null) {
      field.initializer(initializer);
    }

    return field.build();
  }

  private String name() {
    return methodInfo.fieldName();
  }

  private TypeName type() {
    return methodInfo.returnTypeInfo().typeName();
  }

}