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package bndtools.release;

import java.io.File;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.ui.IActionDelegate;
import org.eclipse.ui.IObjectActionDelegate;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.PlatformUI;

import aQute.bnd.build.Project;
import bndtools.central.Central;
import bndtools.release.nl.Messages;

public class ReleaseAction implements IObjectActionDelegate {
	// @SuppressWarnings("unused")
	// private IWorkbenchPart targetPart;

	private Map> bndFiles;

	@Override
	public void run(IAction action) {

		if (bndFiles != null) {
			if (ReleaseHelper.getReleaseRepositories().length == 0) {
				Activator.message(Messages.noReleaseRepos);
				return;
			}

			if (!PlatformUI.getWorkbench()
				.saveAllEditors(true)) {
				return;
			}

			for (Map.Entry> me : bndFiles.entrySet()) {

				Project project;
				try {
					project = me.getKey();
				} catch (Exception e) {
					throw new RuntimeException(e);
				}
				ReleaseDialogJob job;
				if (isBndBndSelected(me.getValue())) {
					job = new ReleaseDialogJob(project, null);
				} else {
					job = new ReleaseDialogJob(project, me.getValue());
				}
				job.schedule();
			}
		}
	}

	private static boolean isBndBndSelected(List files) {
		for (File file : files) {
			if (Project.BNDFILE.equals(file.getName())) {
				return true;
			}
		}
		return false;
	}

	/**
	 * @see IActionDelegate#selectionChanged(IAction, ISelection)
	 */
	@Override
	public void selectionChanged(IAction action, ISelection selection) {
		IFile[] locations = getLocations(selection);
		bndFiles = new LinkedHashMap<>();
		for (IFile iFile : locations) {
			File file = iFile.getLocation()
				.toFile();
			Project project;
			try {
				IProject iProject = iFile.getProject();
				project = Central.getWorkspace()
					.getProject(iProject.getName());
				// .bnd files exists in cnf that are unreleasable
				if (project == null || project.isCnf()) {
					continue;
				}
			} catch (Exception e) {
				throw new RuntimeException(e);
			}
			List projectFiles = bndFiles.get(project);
			if (projectFiles == null) {
				projectFiles = new ArrayList<>();
				bndFiles.put(project, projectFiles);
			}
			projectFiles.add(file);
		}
	}

	static IFile[] getLocations(ISelection selection) {
		if (selection != null && (selection instanceof StructuredSelection)) {
			StructuredSelection ss = (StructuredSelection) selection;
			IFile[] result = new IFile[ss.size()];
			int n = 0;
			for (@SuppressWarnings("unchecked")
			Iterator i = ss.iterator(); i.hasNext();) {
				result[n++] = i.next();
			}
			return result;
		}
		return null;
	}

	@Override
	public void setActivePart(IAction action, IWorkbenchPart targetPart) {
		// this.targetPart = targetPart;
	}

}