package org.eparapher.rcp.actions;

import java.io.File;

import org.apache.log4j.Logger;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.window.Window;
import org.eclipse.jface.wizard.WizardDialog;
import org.eclipse.swt.SWT;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
import org.eparapher.core.signature.CMSSignatureParameters;
import org.eparapher.core.signature.CMSSigner;
import org.eparapher.core.signature.DefaultSignatureParameters;
import org.eparapher.core.signature.GenericSigner;
import org.eparapher.rcp.tools.GUIIcons;
import org.eparapher.rcp.wizards.CMSSigningWizard;

public class CMSSignDocumentAction extends GenericSignatureAction {

	private static Logger log = Logger.getLogger(CMSSignDocumentAction.class);
	
	public CMSSignDocumentAction() {
		super(null, true, "CMS signing");
	}
	
	public CMSSignDocumentAction(TreeViewer mviewer, boolean museWizard) {
		super(mviewer, museWizard, "CMS signing");
	}
	
	public CMSSignDocumentAction(IWorkbenchWindow mwindow) {
		super(mwindow, "CMS signing");
	}
	
	public CMSSignDocumentAction(String[] files, boolean museWizard) {
		super(null, museWizard, "CMS signing");
		filesForAction = files;
	}
	
	public void buildAction() {
		this.setId("CMSSignDocumentAction");
		this.setImageDescriptor(GUIIcons.SIGNATURE_ICON);
		if (!usewizard) {
			this.setText("CMS Digital Signature");
			this.setToolTipText("Sign your document(s) in CMS format with default parameters");
			this.setAccelerator(SWT.CTRL | 'R');
		} else {
			this.setText("CMS Digital Signature (wizard)");
			this.setToolTipText("Sign your document(s) in CMS format with a wizard");
			this.setAccelerator(SWT.CTRL | 'T');
		}
	}
	protected DefaultSignatureParameters getParameters() {

		CMSSignatureParameters cmssignparams = new CMSSignatureParameters();
		cmssignparams.setCMSSignatureParamsFromPreferences();
		if (viewer != null)
			cmssignparams.setFileSelection(getFileSelectionFromView());
		if (filesForAction != null)
			cmssignparams.setFileSelection(getFileSelectionFromParameters());
		
		if (usewizard) {
			//Launch Wizard to get CMS Signature Parameters
			CMSSigningWizard cmsWizard = new CMSSigningWizard(cmssignparams);
			if (window==null)
				window=PlatformUI.getWorkbench().getActiveWorkbenchWindow();
			WizardDialog dialog = new WizardDialog(window.getShell(), cmsWizard);
			try {
				if ( dialog.open() != Window.OK ) {
					log.warn("CMS signing wizard cancelled");
					return null;
				}
			} catch (Exception e) {
				log.debug("Problem while invoking the CMS Settings Signature Wizard",e);
			}
			//recover params from wizard
			cmssignparams = cmsWizard.getCMSSignatureParams();
		}
		return cmssignparams;
	}

	@Override
	GenericSigner getSigner() {
		return new CMSSigner();
	}

	@Override
	boolean isFileWithCorrectFormat(File file2verify) {
		// Always true as CMS can sign any bit
		return true;
	}
	@Override
	void presignature(IProgressMonitor monitor, GenericSigner signer,
			DefaultSignatureParameters signparams) {
		// Nothing to do here
	}
	
	@Override
	void signFile(IProgressMonitor monitor, File file,
			GenericSigner signer, DefaultSignatureParameters cmssignparams) {
		monitor.subTask("Signing "+file.getName());
		signer.sign( file.getAbsolutePath(), cmssignparams);
		monitor.worked(1);
	}
	@Override
	void postsignature(IProgressMonitor monitor, GenericSigner signer,
			DefaultSignatureParameters signparams) {
		// Nothing to do here
		
	}
	
}