package io.micronaut.http.hateoas;
import io.micronaut.core.annotation.Internal;
import io.micronaut.core.annotation.Introspected;
import io.micronaut.core.annotation.ReflectiveAccess;
import io.micronaut.core.convert.value.ConvertibleValues;
import io.micronaut.core.util.StringUtils;
import io.micronaut.core.value.OptionalMultiValues;
import io.micronaut.http.MediaType;
import io.micronaut.http.annotation.Produces;
import edu.umd.cs.findbugs.annotations.Nullable;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Optional;
@Produces(MediaType.APPLICATION_HAL_JSON)
@Introspected
public abstract class AbstractResource<Impl extends AbstractResource> implements Resource {
private final Map<CharSequence, List<Link>> linkMap = new LinkedHashMap<>(1);
private final Map<CharSequence, List<Resource>> embeddedMap = new LinkedHashMap<>(1);
public Impl link(@Nullable CharSequence ref, @Nullable Link link) {
if (StringUtils.isNotEmpty(ref) && link != null) {
List<Link> links = this.linkMap.computeIfAbsent(ref, charSequence -> new ArrayList<>());
links.add(link);
}
return (Impl) this;
}
public Impl link(@Nullable CharSequence ref, @Nullable String link) {
if (StringUtils.isNotEmpty(ref) && link != null) {
List<Link> links = this.linkMap.computeIfAbsent(ref, charSequence -> new ArrayList<>());
links.add(Link.of(link));
}
return (Impl) this;
}
public Impl embedded(CharSequence ref, Resource resource) {
if (StringUtils.isNotEmpty(ref) && resource != null) {
List<Resource> resources = this.embeddedMap.computeIfAbsent(ref, charSequence -> new ArrayList<>());
resources.add(resource);
}
return (Impl) this;
}
public Impl embedded(CharSequence ref, Resource... resource) {
if (StringUtils.isNotEmpty(ref) && resource != null) {
List<Resource> resources = this.embeddedMap.computeIfAbsent(ref, charSequence -> new ArrayList<>());
resources.addAll(Arrays.asList(resource));
}
return (Impl) this;
}
public Impl embedded(CharSequence ref, List<Resource> resourceList) {
if (StringUtils.isNotEmpty(ref) && resourceList != null) {
List<Resource> resources = this.embeddedMap.computeIfAbsent(ref, charSequence -> new ArrayList<>());
resources.addAll(resourceList);
}
return (Impl) this;
}
@Override
public OptionalMultiValues<Link> getLinks() {
return OptionalMultiValues.of(linkMap);
}
@Override
public OptionalMultiValues<Resource> getEmbedded() {
return OptionalMultiValues.of(embeddedMap);
}
@SuppressWarnings("unchecked")
@Internal
@ReflectiveAccess
protected final void setLinks(Map<String, Object> links) {
for (Map.Entry<String, Object> entry : links.entrySet()) {
String name = entry.getKey();
Object value = entry.getValue();
if (value instanceof Map) {
Map<String, Object> linkMap = (Map<String, Object>) value;
link(name, linkMap);
}
}
}
private void link(String name, Map<String, Object> linkMap) {
ConvertibleValues<Object> values = ConvertibleValues.of(linkMap);
Optional<String> uri = values.get(Link.HREF, String.class);
uri.ifPresent(uri1 -> {
Link.Builder link = Link.build(uri1);
values.get("templated", Boolean.class)
.ifPresent(link::templated);
values.get("hreflang", String.class)
.ifPresent(link::hreflang);
values.get("title", String.class)
.ifPresent(link::title);
values.get("profile", String.class)
.ifPresent(link::profile);
values.get("deprecation", String.class)
.ifPresent(link::deprecation);
link(name, link.build());
});
}
}