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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 java.util.List;
import java.util.Objects;
import java.util.Optional;

import br.com.objectos.way.testable.Equality;
import br.com.objectos.way.testable.Testable;
import br.com.objectos.way.testable.Tester;

/**
 * @author [email protected] (Marcio Endo)
 */
public abstract class AnnotationInfo
    implements
    HasAnnotationInfoList,
    HasNameInfo,
    Testable {

  @Override
  public abstract PackageInfo packageInfo();
  abstract AccessInfo accessInfo();
  abstract String name();
  abstract AnnotationValueInfoMap annotationValueInfoMap();
  public abstract Optional enclosingSimpleTypeInfo();
  @Override
  public abstract List annotationInfoList();

  AnnotationInfo() {
  }

  public Optional> annotationInfoArrayValue(String name) {
    return annotationValueInfoMap().annotationInfoArrayValue(name);
  }

  public Optional annotationValueInfo(String name) {
    return annotationValueInfoMap().get(name);
  }

  public List annotationValueInfoList() {
    return annotationValueInfoMap().list();
  }

  public boolean booleanValue(String name, boolean defaultValue) {
    Optional maybeValueInfo = annotationValueInfo(name);
    return maybeValueInfo.isPresent()
        ? maybeValueInfo.get().booleanValue()
        : defaultValue;
  }

  public Optional enclosingTypeInfo() {
    return enclosingSimpleTypeInfo().flatMap(SimpleTypeInfo::typeInfo);
  }

  public Optional> enumConstantInfoArrayValue(String name) {
    return annotationValueInfoMap().enumConstantInfoArrayValue(name);
  }

  public Optional enumConstantInfoValue(String name) {
    return annotationValueInfo(name)
        .map(AnnotationValueInfo::enumConstantInfoValue);
  }

  public > E enumValue(Class enumType, String name, E defaultValue) {
    Objects.requireNonNull(enumType);
    Objects.requireNonNull(name);
    Objects.requireNonNull(defaultValue);
    return enumConstantInfoValue(name).map(info -> info.getEnumValue(enumType)).orElse(defaultValue);
  }

  public int intValue(String name, int defaultValue) {
    Optional maybeValueInfo = annotationValueInfo(name);
    return maybeValueInfo.isPresent()
        ? maybeValueInfo.get().intValue()
        : defaultValue;
  }

  @Override
  public Equality isEqualTo(Object that) {
    return Tester.of(AnnotationInfo.class)
        .add("packageInfo", o -> o.packageInfo())
        .add("accessInfo", o -> o.accessInfo())
        .add("name", o -> o.name())
        .add("annotationValueInfoMap", o -> o.annotationValueInfoMap())
        .add("enclosingSimpleTypeInfo", o -> o.enclosingSimpleTypeInfo())
        .add("annotationInfoList", o -> o.annotationInfoList())
        .test(this, that);
  }

  @Override
  public NameInfo nameInfo() {
    return enclosingSimpleTypeInfo()
        .map(SimpleTypeInfo::nameInfo)
        .orElse(NameInfo.of())
        .add(name());
  }

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

  public abstract SimpleTypeInfo simpleTypeInfo();

  public Optional> simpleTypeInfoArrayValue(String name) {
    return annotationValueInfoMap().getTypeArray(name);
  }

  public Optional simpleTypeInfoValue(String name) {
    return annotationValueInfo(name)
        .map(AnnotationValueInfo::simpleTypeInfoValue);
  }

  public Optional stringValue(String name) {
    return annotationValueInfo(name)
        .map(AnnotationValueInfo::stringValue);
  }

  public String stringValue(String name, String defaultValue) {
    Optional maybeValueInfo = annotationValueInfo(name);
    return maybeValueInfo.isPresent()
        ? maybeValueInfo.get().stringValue()
        : defaultValue;
  }

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

}