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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.xls.pojo.plugin;

import br.com.objectos.code.AnnotationInfo;
import br.com.objectos.pojo.plugin.Property;
import br.com.objectos.xls.Unit;
import br.com.objectos.xls.pojo.Width;

import com.squareup.javapoet.MethodSpec;

/**
 * @author [email protected] (Marcio Endo)
 */
abstract class SheetMethodWidth {

  private static final SheetMethodWidth SKIP = new Skip();

  private SheetMethodWidth() {
  }

  public static SheetMethodWidth of(Property property) {
    return property.annotationInfo(Width.class)
        .map(Present::of)
        .orElse(SKIP);
  }

  public abstract void write(MethodSpec.Builder write);

  private static class Present extends SheetMethodWidth {

    private final int value;
    private final Unit unit;

    private Present(int value, Unit unit) {
      this.value = value;
      this.unit = unit;
    }

    public static SheetMethodWidth of(AnnotationInfo annotationInfo) {
      int value = annotationInfo.intValue("value", 0);
      Unit unit = annotationInfo.enumValue(Unit.class, "unit", Unit.CHAR);
      return new Present(value, unit);
    }

    @Override
    public void write(MethodSpec.Builder write) {
      write.addCode("    .size($L, $T.$L)", value, Unit.class, unit);
    }

  }

  private static class Skip extends SheetMethodWidth {

    @Override
    public void write(MethodSpec.Builder write) {
      write.addCode("    .skip()");
    }

  }

}