/*
* Copyright 2012 Erlend Hamnaberg
*
* 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 net.hamnaberg.json;
import javaslang.control.Option;
import net.hamnaberg.json.extension.Extended;
import net.hamnaberg.json.util.Iterables;
import java.net.URI;
import java.util.*;
import java.util.function.Predicate;
import java.util.stream.Collector;
import java.util.stream.Collectors;
import java.util.stream.StreamSupport;
import static javaslang.control.Option.of;
public final class Item extends DataContainer<Item> {
Item(Json.JObject node) {
super(node);
}
public static Item create(URI href, Iterable<Property> properties) {
return create(of(href), properties, Collections.<Link>emptyList());
}
public static Item create(URI href, Iterable<Property> properties, List<Link> links) {
return create(of(href), properties, links);
}
public static Item create(Option<URI> href, Iterable<Property> properties, List<Link> links) {
Map<String, Json.JValue> map = new LinkedHashMap<>();
href.forEach(uri -> map.put("href", Json.jString(uri.toString())));
if (!Iterables.isEmpty(properties)) {
map.put("data", Json.jArray(StreamSupport.stream(properties.spliterator(), false)
.map(Extended::asJson)
.collect(Collectors.toList())));
}
if (!Iterables.isEmpty(links)) {
map.put("links", Json.jArray(StreamSupport.stream(links.spliterator(), false)
.map(Extended::asJson)
.collect(Collectors.toList())));
}
return new Item(Json.jObject(map));
}
public static Item create(Option<URI> href, Iterable<Property> properties) {
return create(href, properties, Collections.<Link>emptyList());
}
public static Item create(Option<URI> href) {
return create(href, Collections.<Property>emptyList(), Collections.<Link>emptyList());
}
public static Item create() {
return create(Option.none());
}
public Option<URI> getHref() {
return delegate.getAsString("href").map(URI::create);
}
public List<Link> getLinks() {
return Link.fromArray(delegate.getAsArrayOrEmpty("links"));
}
public Template toTemplate() {
return Template.create(getData());
}
public Template toTemplate(Template input) {
Map<String, Property> dataFromTemplate = input.getDataAsMap();
Map<String, Property> ourData = getDataAsMap();
Set<String> propsNotInOur = new HashSet<String>();
List<Property> templateProps = new ArrayList<Property>();
for (String key : dataFromTemplate.keySet()) {
Property property = ourData.get(key);
if (property != null) {
templateProps.add(property);
}
else {
propsNotInOur.add(key);
}
}
if (propsNotInOur.isEmpty()) {
return Template.create(templateProps);
}
else {
throw new IllegalArgumentException("There are some properties that cannot be found in the template:\n" + propsNotInOur);
}
}
public Option<Link> linkByRel(final String rel) {
return findLink(input -> rel.equals(input.getRel()));
}
public Option<Link> linkByName(final String name) {
return findLink(input -> of(name).equals(input.getName()));
}
public Option<Link> linkByRelAndName(final String rel, final String name) {
return findLink(input -> rel.equals(input.getRel()) && of(name).equals(input.getName()));
}
public Option<Link> findLink(Predicate<Link> predicate) {
return Option.ofOptional(getLinks().stream().filter(predicate).findFirst());
}
public List<Link> findLinks(Predicate<Link> predicate) {
return getLinks().stream().filter(predicate).collect(Collectors.<Link>toList());
}
@Override
protected Item copy(Json.JObject value) {
return new Item(value);
}
@Override
public String toString() {
return String.format("Item with href %s, properties %s and links %s", getHref().getOrElse((URI)null), getData(), getLinks());
}
public Collection toCollection() {
return new Collection.Builder(getHref()).addItem(this).build();
}
public Builder toBuilder() {
Builder builder = new Builder(getHref());
return builder.addProperties(getData()).addLinks(getLinks());
}
static List<Item> fromArray(Json.JArray items) {
return Collections.unmodifiableList(
items.getListAsObjects()
.map(Item::new)
.toJavaList()
);
}
public void validate() {
}
public static Builder builder(URI href) {
return new Builder(of(href));
}
public static Builder builder() {
return new Builder();
}
/**
* Mutable not thread-safe builder.
*/
public static class Builder {
private Option<URI> href;
private List<Property> props = new ArrayList<Property>();
private List<Link> links = new ArrayList<Link>();
public Builder() {
this(Option.none());
}
public Builder(URI href) {
this(of(href));
}
public Builder(Option<URI> href) {
this.href = href;
}
public Builder withHref(URI href) {
this.href = of(href);
return this;
}
public Builder addProperty(Property prop) {
props.add(prop);
return this;
}
public Builder addProperties(Iterable<Property> properties) {
properties.forEach(props::add);
return this;
}
public Builder addLink(Link link) {
links.add(link);
return this;
}
public Builder addLinks(Iterable<Link> links) {
links.forEach(this.links::add);
return this;
}
public Item build() {
return Item.create(href, props, links);
}
}
}