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/*
 * Copyright 2014 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 br.com.objectos.way.core.auto.AutoPojo;
import br.com.objectos.way.core.testing.Testable;
import br.com.objectos.way.core.testing.Testables;
import br.com.objectos.way.core.tmpl.mustache.IsMustacheSerializable;
import br.com.objectos.way.core.tmpl.mustache.MustacheObject;
import br.com.objectos.way.core.tmpl.mustache.Mustaches;

import com.google.common.base.Objects;
import com.google.common.base.Optional;

/**
 * @author [email protected] (Marcio Endo)
 */
@AutoPojo
public abstract class PackageInfo
    implements
    CanFilterImportInfoSet,
    IsMustacheSerializable,
    Testable {

  static final PackageInfo JAVA_LANG = builder()
      .name("java.lang")
      .build();

  abstract String name();

  PackageInfo() {
  }

  public static PackageInfoBuilder builder() {
    return new PackageInfoBuilderPojo();
  }

  public boolean hasName(String name) {
    return name().equals(name);
  }

  @Override
  public boolean isEqual(PackageInfo that) {
    return Testables.isEqualHelper()
        .equal(name(), that.name())
        .result();
  }

  public boolean isJavaLang() {
    return "java.lang".equals(name());
  }

  @Override
  public boolean shouldKeep(ImportInfo importInfo) {
    return importInfo.shouldKeep(this);
  }

  public ImportInfo toImportInfo(NameInfo name) {
    return ImportInfo.newPojo()
        .packageInfo(this)
        .name(Optional.of(name))
        .metaStatic(false)
        .build();
  }

  @Override
  public MustacheObject toMustache() {
    return Mustaches.toMustacheHelper()
        .add("name", name())
        .toMustache();
  }

  public String toQualifiedName(String name) {
    return name() + "." + name;
  }

  @Override
  public String toString() {
    return name();
  }

  @Override
  public final int hashCode() {
    return Objects.hashCode(name());
  }

  @Override
  public final boolean equals(final Object obj) {
    if (obj == this) {
      return true;
    }
    if (obj instanceof PackageInfo) {
      final PackageInfo that = (PackageInfo) obj;
      return Objects.equal(name(), that.name());
    } else {
      return false;
    }
  }

}