package org.simantics.xml.sax.ui.wizard;

import java.io.File;
import java.io.IOException;

import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.wizard.Wizard;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.ui.IImportWizard;
import org.eclipse.ui.IWorkbench;
import org.simantics.xml.sax.ManualSchemaFileImport;
import org.simantics.xml.sax.SchemaConverter;

public class SchemaConversionWizard extends Wizard implements IImportWizard {

	InputSelectionPage inputSelectionPage;
	ImportProcessPage importProcessPage;
	SchemaCombinationPage schemaCombinationPage;
	
	public SchemaConversionWizard() {
		setWindowTitle("XML Schema conversion");
	}

	@Override
	public void init(IWorkbench workbench, IStructuredSelection selection) {

	}

	@Override
	public boolean performFinish() {
		if (importProcessPage.isImporting())
			return false;
		return true;
	}
	
	
	@Override
	public void addPages() {
		addPage(inputSelectionPage = new InputSelectionPage());
		addPage(importProcessPage = new ImportProcessPage());
		addPage(schemaCombinationPage = new SchemaCombinationPage());
	}
	
	public void doConversion() throws Exception {
		
		
		File inputFile = new File(inputSelectionPage.getSchemaFilename());
		File configurationFile = null;
		if (inputSelectionPage.getConfigurationFilename() != null)
			configurationFile = new File(inputSelectionPage.getConfigurationFilename());
		File outputPlugin = new File(inputSelectionPage.getPluginFilename());

		SchemaConverter converter = new SchemaConverter(inputFile,configurationFile,outputPlugin);
		converter.setCreateExporter(inputSelectionPage.createExporter);
		converter.setCreateImporter(inputSelectionPage.createImporter);
		converter.setCreatePGraph(inputSelectionPage.createPGraph);
		converter.setFileImport(new ManualSchemaFileImport() {
			
			String filename;
			@Override
			public File getFileForLocation(final String location) throws IOException {
				if (Display.getCurrent() == null)
					Display.getDefault().syncExec(new Runnable() {
						@Override
						public void run() {
							showDialog(location);
						}
					});
				else {
					showDialog(location);
				}
				if (filename == null)
					return null;
				return new File(filename);
			}
			
			protected void showDialog(String location) {
				FileDialog dialog = new FileDialog(SchemaConversionWizard.this.getShell(), SWT.OPEN);
				dialog.setText("Open schema file for " + location);
				filename = dialog.open();
			}
		});
		
		converter.convert();
		
		schemaCombinationPage.setOutputPlugin(outputPlugin);
	}

}