package org.springframework.roo.addon.web.mvc.embedded.provider;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Service;
import org.springframework.roo.addon.web.mvc.embedded.AbstractEmbeddedProvider;
import org.springframework.roo.addon.web.mvc.embedded.EmbeddedCompletor;
import org.springframework.roo.support.util.XmlElementBuilder;
import org.springframework.roo.support.util.XmlRoundTripUtils;
import org.springframework.roo.support.util.XmlUtils;
import org.w3c.dom.Element;
/**
* Provider to embed photo galleries via a URL or specific install method.
*
* @author Stefan Schmidt
* @since 1.1
*/
@Component(immediate = true)
@Service
public class PhotoEmbeddedProvider extends AbstractEmbeddedProvider {
public enum PhotoProvider implements EmbeddedCompletor {
FLIKR, PICASA;
@Override
public String toString() {
final ToStringBuilder builder = new ToStringBuilder(this);
builder.append("provider", name());
return builder.toString();
}
}
public boolean embed(final String url, final String viewName) {
// Expected http://picasaweb.google.com.au/stsmedia/SydneyByNight
if (url.contains("picasaweb.google.")) {
final String[] split = url.split("/");
if (split.length > 4) {
final Map<String, String> options = new HashMap<String, String>();
options.put("provider", PhotoProvider.PICASA.name());
options.put("userId", split[3]);
options.put("albumId", getPicasaId(url));
return install(viewName, options);
}
return false;
}
else if (url.contains("flickr.")) {
final String[] split = url.split("/");
if (split.length > 4) {
final Map<String, String> options = new HashMap<String, String>();
options.put("provider", PhotoProvider.FLIKR.name());
options.put("userId", split[4]);
options.put("albumId", split.length > 5 ? split[5] : split[4]);
return install(viewName, options);
}
return false;
}
return false;
}
private String getPicasaId(final String url) {
final String json = sendHttpGetRequest("http://api.embed.ly/v1/api/oembed?url="
+ url);
if (json != null) {
final String subDoc = json
.substring(json.indexOf("albumid%2F") + 10);
return subDoc.substring(
0,
subDoc.indexOf("%") == 1 ? subDoc.length() : subDoc
.indexOf("%"));
}
return null;
}
public boolean install(final String viewName,
final Map<String, String> options) {
if (options == null || options.size() != 3
|| !options.containsKey("provider")
|| !options.containsKey("userId")
|| !options.containsKey("albumId")) {
return false;
}
final String provider = options.get("provider");
if (!isProviderSupported(provider, PhotoProvider.values())) {
return false;
}
final String userId = options.get("userId");
final String albumId = options.get("albumId");
installTagx("photos");
final Element photos = new XmlElementBuilder("embed:photos", XmlUtils
.getDocumentBuilder().newDocument())
.addAttribute("id", "photos_" + userId + "_" + albumId)
.addAttribute("albumId", albumId)
.addAttribute("userId", userId)
.addAttribute("provider", provider.toLowerCase()).build();
photos.setAttribute("z",
XmlRoundTripUtils.calculateUniqueKeyFor(photos));
installJspx(getViewName(viewName, provider.toLowerCase()), null, photos);
return true;
}
}