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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.ArrayList;
import java.util.List;
import java.util.Optional;

import br.com.objectos.code.AnnotationInfo;
import br.com.objectos.code.EnumConstantInfo;
import br.com.objectos.flat.pojo.IntegerOption;
import br.com.objectos.flat.pojo.WhenZero;
import br.com.objectos.pojo.plugin.Property;

/**
 * @author [email protected] (Marcio Endo)
 */
abstract class IntegerFormatMethod extends FieldMethod {

  IntegerFormatMethod(Property property, AnnotationInfo fieldAnnotation) {
    super(property, fieldAnnotation);
  }

  public static IntegerFormatMethod code(Property property, AnnotationInfo fieldAnnotation) {
    Optional maybeWhenZero = property.annotationInfo(WhenZero.class);
    return maybeWhenZero.isPresent()
        ? IntegerFormatMethodConditional.whenZero(property, fieldAnnotation, maybeWhenZero.get())
        : new IntegerFormatMethodStandard(property, fieldAnnotation);
  }

  void recordCode(RecordCode code) {
    code.write();
  }

  abstract class RecordCode {

    private final Body body;

    public RecordCode(Body body) {
      this.body = body;
    }

    public final void write() {
      List options = fieldAnnotationEnumArray("options");

      StringBuilder format = new StringBuilder();
      format(format);
      formatOptions(format, options);
      format.append(")");

      List args = new ArrayList<>();
      args(args);
      args.add(fieldAnnotationIntValue("length"));
      argsOptions(args, options);

      body.add(format.toString(), args.toArray());
    }

    abstract void args(List args);

    void argsOptions(List args, List options) {
      for (EnumConstantInfo option : options) {
        args.add(IntegerOption.class);
        args.add(option.value());
      }
    }

    abstract void format(StringBuilder format);

    void formatOptions(StringBuilder format, List options) {
      options.forEach((o) -> format.append(", $T.$L"));
    }

  }

}