/**
 * Copyright (C) 2001-2017 by RapidMiner and the contributors
 * 
 * Complete list of developers available at our web site:
 * 
 * http://rapidminer.com
 * 
 * This program is free software: you can redistribute it and/or modify it under the terms of the
 * GNU Affero General Public License as published by the Free Software Foundation, either version 3
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
 * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Affero General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License along with this program.
 * If not, see http://www.gnu.org/licenses/.
*/
package com.rapidminer.repository.gui.actions;

import com.rapidminer.Process;
import com.rapidminer.RepositoryProcessLocation;
import com.rapidminer.gui.RapidMinerGUI;
import com.rapidminer.gui.tools.ProgressThread;
import com.rapidminer.gui.tools.SwingTools;
import com.rapidminer.gui.tools.dialogs.ConfirmDialog;
import com.rapidminer.repository.Entry;
import com.rapidminer.repository.Folder;
import com.rapidminer.repository.MalformedRepositoryLocationException;
import com.rapidminer.repository.ProcessEntry;
import com.rapidminer.repository.RepositoryException;
import com.rapidminer.repository.RepositoryLocation;
import com.rapidminer.repository.gui.RepositoryTree;


/**
 * This action stores the current process at the selected entry.
 * 
 * @author Simon Fischer
 */
public class StoreProcessAction extends AbstractRepositoryAction<Entry> {

	private static final long serialVersionUID = 1L;

	public StoreProcessAction(RepositoryTree tree) {
		super(tree, Entry.class, false, "repository_store_process");
	}

	@Override
	public void actionPerformed(Entry entry) {
		if (entry instanceof Folder) {
			storeInFolder(Folder.class.cast(entry));
		}
		if (entry instanceof ProcessEntry) {
			overwriteProcess(ProcessEntry.class.cast(entry));
		}
	}

	private void storeInFolder(final Folder folder) {
		// get current process name (if present)
		String currentName = null;
		if (RapidMinerGUI.getMainFrame().getProcess().getProcessLocation() != null) {
			currentName = RapidMinerGUI.getMainFrame().getProcess().getProcessLocation().getShortName();
		}

		final String name = SwingTools.showRepositoryEntryInputDialog("store_process", currentName);
		if (name != null) {
			if (name.isEmpty()) {
				SwingTools.showVerySimpleErrorMessage("please_enter_non_empty_name");
				return;
			}
			try {
				// check if folder already contains entry with said name
				RepositoryLocation entryLocation = new RepositoryLocation(folder.getLocation(), name);
				if (folder.containsEntry(name)) {
					Entry existingEntry = entryLocation.locateEntry();
					if (!(existingEntry instanceof ProcessEntry)) {
						// existing entry is not a ProcessEntry, cannot overwrite
						SwingTools.showVerySimpleErrorMessage("repository_entry_already_exists", name);
						return;
					} else {
						// existing entry is ProcessEntry,let #overwriteProcess() handle it
						overwriteProcess((ProcessEntry) existingEntry);
						return;
					}
				}
			} catch (RepositoryException e1) {
				SwingTools.showSimpleErrorMessage("cannot_store_process_in_repository", e1, name);
				return;
			} catch (MalformedRepositoryLocationException e1) {
				SwingTools.showSimpleErrorMessage("cannot_store_process_in_repository", e1, name);
				return;
			}

			ProgressThread storeProgressThread = new ProgressThread("store_process") {

				@Override
				public void run() {
					getProgressListener().setTotal(100);
					Process process = RapidMinerGUI.getMainFrame().getProcess();
					RepositoryProcessLocation processLocation = null;
					try {
						processLocation = new RepositoryProcessLocation(new RepositoryLocation(folder.getLocation(), name));
						getProgressListener().setCompleted(10);
						Process.checkIfSavable(process);
						folder.createProcessEntry(name, process.getRootOperator().getXML(false));
						process.setProcessLocation(processLocation);
						tree.expandPath(tree.getSelectionPath());
						RapidMinerGUI.addToRecentFiles(process.getProcessLocation());
						RapidMinerGUI.getMainFrame().processHasBeenSaved();
					} catch (Exception e) {
						SwingTools.showSimpleErrorMessage("cannot_save_process", e, processLocation, e.getMessage());
						RapidMinerGUI.getMainFrame().getProcess().setProcessLocation(null);
					} finally {
						getProgressListener().setCompleted(10);
						getProgressListener().complete();
					}
				}
			};
			storeProgressThread.start();
		}
	}

	private void overwriteProcess(final ProcessEntry processEntry) {
		if (SwingTools.showConfirmDialog("overwrite", ConfirmDialog.YES_NO_OPTION, processEntry.getLocation()) == ConfirmDialog.YES_OPTION) {
			ProgressThread storeProgressThread = new ProgressThread("store_process") {

				@Override
				public void run() {
					getProgressListener().setTotal(100);
					getProgressListener().setCompleted(10);
					try {
						Process process = RapidMinerGUI.getMainFrame().getProcess();
						process.setProcessLocation(new RepositoryProcessLocation(processEntry.getLocation()));
						processEntry.storeXML(process.getRootOperator().getXML(false));
						RapidMinerGUI.addToRecentFiles(process.getProcessLocation());
						RapidMinerGUI.getMainFrame().processHasBeenSaved();
					} catch (Exception e) {
						SwingTools.showSimpleErrorMessage("cannot_store_process_in_repository", e, processEntry.getName());
					} finally {
						getProgressListener().setCompleted(100);
						getProgressListener().complete();
					}
				}
			};
			storeProgressThread.start();
		}
	}

	@Override
	public void enable() {
		Entry entry = tree.getSelectedEntry();
		if (entry.isReadOnly()) {
			setEnabled(false);
		} else {
			setEnabled((Folder.class.isInstance(entry) || ProcessEntry.class.isInstance(entry)));
		}

	}

}