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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.flat;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;

import javax.lang.model.element.Modifier;

import br.com.objectos.metainf.Services;
import br.com.objectos.pojo.plugin.AbstractPlugin;
import br.com.objectos.pojo.plugin.Contribution;
import br.com.objectos.pojo.plugin.Plugin;
import br.com.objectos.pojo.plugin.PojoAction;
import br.com.objectos.pojo.plugin.PojoInfo;

import com.squareup.javapoet.MethodSpec;

/**
 * @author [email protected] (Marcio Endo)
 */
@Services(Plugin.class)
public class WritableFlatFilePlugin extends AbstractPlugin implements PojoAction {

  @Override
  protected void configure() {
    when(pojo(hasInterface(WritableFlatFile.class))).execute(this);
  }

  @Override
  public Contribution execute(PojoInfo pojoInfo) {
    return Contribution.builder()
        .addMethod(method0())
        .addMethod(method1())
        .build();
  }

  private MethodSpec method0() {
    return MethodSpec.methodBuilder("writeTo")
        .addAnnotation(Override.class)
        .addModifiers(Modifier.PUBLIC)
        .addException(IOException.class)
        .addParameter(Appendable.class, "out")
        .addStatement("$L(out)", FlatFilePlugin.writeToMethodName)
        .build();
  }

  private MethodSpec method1() {
    return MethodSpec.methodBuilder("writeTo")
        .addAnnotation(Override.class)
        .addModifiers(Modifier.PUBLIC)
        .addException(IOException.class)
        .addParameter(File.class, "file")
        .beginControlFlow("try ($T out = new $T(file))", FileWriter.class, FileWriter.class)
        .addStatement("$L(out)", FlatFilePlugin.writeToMethodName)
        .endControlFlow()
        .build();
  }

}