br.com.objectos.xls.pojo.plugin.SpreadsheetPlugin Maven / Gradle / Ivy

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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.xls.pojo.plugin;

import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;

import javax.lang.model.element.Modifier;

import br.com.objectos.io.Directory;
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 br.com.objectos.xls.pojo.Spreadsheet;

import com.squareup.javapoet.ArrayTypeName;
import com.squareup.javapoet.MethodSpec;
import com.squareup.javapoet.TypeName;

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

  private static final String NEW_SPREADSHEET = "___new_spreadsheet___";

  @Override
  protected void configure() {
    executeWhen(pojo(instanceOf(Spreadsheet.class)));

    when(property(instanceOf(byte[].class))).and(hasName("write")).ignore();
    when(property(instanceOf(byte[].class))).and(hasName("writeUnchecked")).ignore();

    execute(this);
  }

  @Override
  public Contribution execute(PojoInfo pojoInfo) {
    List methodList = methodList(pojoInfo);

    Contribution.Builder builder = Contribution.builder()
        .addMethod(isWritableTo0())
        .addMethod(isWritableTo1())
        .addMethod(isWritableTo2())
        .addMethod(isWritableTo3())
        .addMethod(isWritableTo4())
        .addMethod(isWritableTo5())
        .addMethod(newSpreadsheet(methodList));

    for (SpreadsheetMethod method : methodList) {
      method.addTo(builder);
    }

    return builder.build();
  }

  private MethodSpec isWritableTo0() {
    return MethodSpec.methodBuilder("write")
        .addAnnotation(Override.class)
        .addModifiers(Modifier.PUBLIC)
        .returns(ArrayTypeName.of(TypeName.BYTE))
        .addException(IOException.class)
        .addStatement("return $L().write()", NEW_SPREADSHEET)
        .build();
  }

  private MethodSpec isWritableTo1() {
    return MethodSpec.methodBuilder("writeTo")
        .addAnnotation(Override.class)
        .addModifiers(Modifier.PUBLIC)
        .addParameter(Directory.class, "dir")
        .addParameter(String.class, "name")
        .addException(IOException.class)
        .addStatement("$L().writeTo(dir, name)", NEW_SPREADSHEET)
        .build();
  }

  private MethodSpec isWritableTo2() {
    return MethodSpec.methodBuilder("writeTo")
        .addAnnotation(Override.class)
        .addModifiers(Modifier.PUBLIC)
        .addParameter(File.class, "file")
        .addException(IOException.class)
        .addStatement("$L().writeTo(file)", NEW_SPREADSHEET)
        .build();
  }

  private MethodSpec isWritableTo3() {
    return MethodSpec.methodBuilder("writeUnchecked")
        .addAnnotation(Override.class)
        .addModifiers(Modifier.PUBLIC)
        .returns(ArrayTypeName.of(TypeName.BYTE))
        .addStatement("return $L().writeUnchecked()", NEW_SPREADSHEET)
        .build();
  }

  private MethodSpec isWritableTo4() {
    return MethodSpec.methodBuilder("writeUncheckedTo")
        .addAnnotation(Override.class)
        .addModifiers(Modifier.PUBLIC)
        .addParameter(Directory.class, "dir")
        .addParameter(String.class, "name")
        .addStatement("$L().writeUncheckedTo(dir, name)", NEW_SPREADSHEET)
        .build();
  }

  private MethodSpec isWritableTo5() {
    return MethodSpec.methodBuilder("writeUncheckedTo")
        .addAnnotation(Override.class)
        .addModifiers(Modifier.PUBLIC)
        .addParameter(File.class, "file")
        .addStatement("$L().writeUncheckedTo(file)", NEW_SPREADSHEET)
        .build();
  }

  private List methodList(PojoInfo pojoInfo) {
    return pojoInfo.propertyStream()
        .map(SpreadsheetMethod::of)
        .filter(Optional::isPresent)
        .map(Optional::get)
        .collect(Collectors.toList());
  }

  private MethodSpec newSpreadsheet(List methodList) {
    MethodSpec.Builder newSpreadsheet = MethodSpec.methodBuilder(NEW_SPREADSHEET)
        .addModifiers(Modifier.PRIVATE)
        .returns(br.com.objectos.xls.Spreadsheet.class)
        .addStatement("$1T spreadsheet = $1T.newSpreadsheet()", br.com.objectos.xls.Spreadsheet.class);
    for (SpreadsheetMethod method : methodList) {
      method.newSpreadsheetStatement(newSpreadsheet);
    }
    return newSpreadsheet
        .addStatement("return spreadsheet")
        .build();
  }

}