package uk.co.oliwali.HawkEye.commands;
import uk.co.oliwali.HawkEye.DataType;
import uk.co.oliwali.HawkEye.Rollback.RollbackType;
import uk.co.oliwali.HawkEye.SearchParser;
import uk.co.oliwali.HawkEye.callbacks.RollbackCallback;
import uk.co.oliwali.HawkEye.database.SearchQuery;
import uk.co.oliwali.HawkEye.database.SearchQuery.SearchDir;
import uk.co.oliwali.HawkEye.util.Permission;
import uk.co.oliwali.HawkEye.util.Util;
/**
* Previews a rollback according to the player's specified input.
* Error handling for user input is done using exceptions to keep code neat.
* @author oliverw92
*/
public class PreviewCommand extends BaseCommand {
public PreviewCommand() {
name = "preview";
argLength = 1;
usage = "<parameters> <- preview rollback changes";
}
@Override
public boolean execute() {
//Check if player already has a rollback processing
if (session.doingRollback()) {
Util.sendMessage(sender, "&cYou already have a rollback command processing!");
return true;
}
//Parse arguments
SearchParser parser = null;
try {
parser = new SearchParser(player, args);
parser.loc = null;
//Check that supplied actions can rollback
if (parser.actions.size() > 0) {
for (DataType type : parser.actions)
if (!type.canRollback()) throw new IllegalArgumentException("You cannot rollback that action type: &7" + type.getConfigName());
}
//If none supplied, add in all rollback types
else {
for (DataType type : DataType.values())
if (type.canRollback()) parser.actions.add(type);
}
} catch (IllegalArgumentException e) {
Util.sendMessage(sender, "&c" + e.getMessage());
return true;
}
//Create new SearchQuery with data
new SearchQuery(new RollbackCallback(session, RollbackType.LOCAL), parser, SearchDir.DESC);
session.setInPreview(true);
return true;
}
@Override
public void moreHelp() {
Util.sendMessage(sender, "&cPreviews a rollback to only you");
Util.sendMessage(sender, "&cThis type of rollback does not affect the actual world in any way");
Util.sendMessage(sender, "&cThe effects can be applied after using &7/hawk preview apply&c or cancelled using &7/hawk preview cancel");
Util.sendMessage(sender, "&cThe parameters are the same as &7/hawk rollback");
}
@Override
public boolean permission() {
return Permission.preview(sender);
}
}