package be.nikiroo.fanfix.library;
import java.io.IOException;
import java.security.InvalidParameterException;
import java.util.ArrayList;
import java.util.List;
import be.nikiroo.fanfix.Instance;
import be.nikiroo.fanfix.data.Chapter;
import be.nikiroo.fanfix.data.MetaData;
import be.nikiroo.fanfix.data.Paragraph;
import be.nikiroo.fanfix.data.Story;
import be.nikiroo.utils.Version;
import be.nikiroo.utils.serial.server.ConnectActionClientObject;
import be.nikiroo.utils.serial.server.ConnectActionServerObject;
import be.nikiroo.utils.serial.server.ServerObject;
/**
* Create a new remote server that will listen for order on the given port.
*
* The available commands are given as arrays of objects (first item is the key,
* second is the command, the rest are the arguments).
*
* The key is always a String, the commands are also Strings; the parameters
* vary depending upon the command.
*
* - [key] GET_METADATA *: will return the metadata of all the stories in the
* library
* - [key] GET_STORY [luid]: will return the given story if it exists (or NULL
* if not)
* - [key] SAVE_STORY [luid]: save the story (that must be sent just after the
* command) with the given LUID
* - [key] DELETE_STORY [luid]: delete the story of LUID luid
* - [key] GET_COVER [luid]: return the cover of the story
* - [key] GET_SOURCE_COVER [source]: return the cover for this source
* - [key] SET_SOURCE_COVER [source], [luid]: set the default cover for the
* given source to the cover of the story denoted by luid
* - [key] EXIT: stop the server
*
*
* @author niki
*/
public class RemoteLibraryServer extends ServerObject {
private final String key;
/**
* Create a new remote server (will not be active until
* {@link RemoteLibraryServer#start()} is called).
*
* @param key
* the key that will restrict access to this server
* @param port
* the port to listen on
*
* @throws IOException
* in case of I/O error
*/
public RemoteLibraryServer(String key, int port) throws IOException {
super("Fanfix remote library", port, true);
this.key = key;
}
@Override
protected Object onRequest(ConnectActionServerObject action,
Version clientVersion, Object data) throws Exception {
String key = "";
String command = "";
Object[] args = new Object[0];
if (data instanceof Object[]) {
Object[] dataArray = (Object[]) data;
if (dataArray.length >= 2) {
args = new Object[dataArray.length - 2];
for (int i = 2; i < dataArray.length; i++) {
args[i - 2] = dataArray[i];
}
key = "" + dataArray[0];
command = "" + dataArray[1];
}
}
System.out.print("[" + command + "] ");
for (Object arg : args) {
System.out.print(arg + " ");
}
System.out.println("");
if (!key.equals(this.key)) {
System.out.println("Key rejected.");
throw new SecurityException("Invalid key");
}
// TODO: progress (+send name + %age info back to client)
if ("GET_METADATA".equals(command)) {
if (args[0].equals("*")) {
List metas = Instance.getLibrary().getMetas(null);
return metas.toArray(new MetaData[] {});
}
throw new InvalidParameterException(
"only * is valid here, but you passed: " + args[0]);
} else if ("GET_STORY".equals(command)) {
Story story = Instance.getLibrary().getStory("" + args[0], null);
sendStory(story, action);
} else if ("SAVE_STORY".equals(command)) {
Story story = recStory(action);
Instance.getLibrary().save(story, "" + args[1], null);
} else if ("DELETE_STORY".equals(command)) {
Instance.getLibrary().delete("" + args[0]);
} else if ("GET_COVER".equals(command)) {
return Instance.getLibrary().getCover("" + args[0]);
} else if ("GET_SOURCE_COVER".equals(command)) {
return Instance.getLibrary().getSourceCover("" + args[0]);
} else if ("SET_SOURCE_COVER".equals(command)) {
Instance.getLibrary().setSourceCover("" + args[0], "" + args[1]);
} else if ("EXIT".equals(command)) {
stop(0, false);
}
return null;
}
public static void sendStory(Story story, Object sender)
throws NoSuchFieldException, NoSuchMethodException,
ClassNotFoundException, IOException {
if (!story.getMeta().isImageDocument()) {
sendNextObject(sender, story);
return;
}
story = story.clone();
List chaps = story.getChapters();
story.setChapters(new ArrayList());
sendNextObject(sender, story);
for (Chapter chap : chaps) {
List paras = chap.getParagraphs();
chap.setParagraphs(new ArrayList());
sendNextObject(sender, chap);
for (Paragraph para : paras) {
sendNextObject(sender, para);
}
}
}
public static Story recStory(Object source) throws NoSuchFieldException,
NoSuchMethodException, ClassNotFoundException, IOException {
Story story = null;
Object obj = getNextObject(source);
if (obj instanceof Story) {
story = (Story) obj;
Chapter current = null;
for (obj = getNextObject(source); obj != null; obj = getNextObject(source)) {
if (obj instanceof Chapter) {
current = (Chapter) obj;
story.getChapters().add(current);
} else if (obj instanceof Paragraph) {
current.getParagraphs().add((Paragraph) obj);
}
}
}
return story;
}
private static Object getNextObject(Object clientOrServer)
throws NoSuchFieldException, NoSuchMethodException,
ClassNotFoundException, IOException {
if (clientOrServer instanceof ConnectActionClientObject) {
ConnectActionClientObject client = (ConnectActionClientObject) clientOrServer;
return client.send(null);
} else if (clientOrServer instanceof ConnectActionServerObject) {
ConnectActionServerObject server = (ConnectActionServerObject) clientOrServer;
Object obj = server.rec();
server.send(null);
return obj;
} else {
throw new ClassNotFoundException();
}
}
private static void sendNextObject(Object clientOrServer, Object obj)
throws NoSuchFieldException, NoSuchMethodException,
ClassNotFoundException, IOException {
if (clientOrServer instanceof ConnectActionClientObject) {
ConnectActionClientObject client = (ConnectActionClientObject) clientOrServer;
client.send(obj);
} else if (clientOrServer instanceof ConnectActionServerObject) {
ConnectActionServerObject server = (ConnectActionServerObject) clientOrServer;
server.send(obj);
server.rec();
} else {
throw new ClassNotFoundException();
}
}
}