package org.gcube.portlets.user.workspace.client.view.windows;


import org.gcube.portlets.user.workspace.client.AppControllerExplorer;
import org.gcube.portlets.user.workspace.client.ConstantsExplorer;
import org.gcube.portlets.user.workspace.client.event.CompletedFileUploadEvent;
import org.gcube.portlets.user.workspace.client.model.FileModel;
import org.gcube.portlets.user.workspace.shared.HandlerResultMessage;

import com.extjs.gxt.ui.client.widget.Window;
import com.google.gwt.core.client.GWT;
import com.google.gwt.http.client.Request;
import com.google.gwt.http.client.RequestBuilder;
import com.google.gwt.http.client.RequestCallback;
import com.google.gwt.http.client.RequestException;
import com.google.gwt.http.client.Response;
import com.google.gwt.user.client.Timer;
import com.google.gwt.user.client.ui.HTML;


/**
 * 
 * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
 * @Jan 20, 2014
 *
 */
public class UpdateServiceUploader extends Window{  

	private FileUploader fileUploaderDlg = null;
	private String fileName = "";
	private boolean overwrite = false;
	private FileModel parent;
	private String uploadType;

	
	/**
	 * 
	 * @param fileUploader
	 * @param parent
	 * @param uploadType
	 * 
	 * By default overwrite paramameter is false
	 */
	public UpdateServiceUploader(final FileUploader fileUploader, final FileModel parent, String uploadType){
		
		this.fileUploaderDlg = fileUploader;
		this.parent = parent;
		this.uploadType = uploadType;
		
	}
	

	public void submitForm() throws Exception{
		
		if(fileName == null || fileName.isEmpty())
			throw new Exception("File absolute path on server is null");
		
		String parameters = "";
		
		parameters+=ConstantsExplorer.UPLOAD_FORM_ELEMENT+"="+fileName+"&";
		
	
		if(parent.getIdentifier()!=null && !parent.getIdentifier().isEmpty())
			parameters+=ConstantsExplorer.ID_FOLDER+"="+parent.getIdentifier()+"&";
		else
			throw new Exception("Parent Folder ID parameter is null or empty");
		
		if(uploadType!=null && !uploadType.isEmpty())
			parameters+=ConstantsExplorer.UPLOAD_TYPE+"="+uploadType+"&";
		else
			throw new Exception("UploadType parameter is null or empty");
		
		parameters+=ConstantsExplorer.IS_OVERWRITE+"="+overwrite;
			
//		String urlRequest = ConstantsExplorer.LOCAL_UPLOAD_WORKSPACE_SERVICE+"?"+URL.encodeQueryString(parameters);
		
		String urlRequest = ConstantsExplorer.LOCAL_UPLOAD_WORKSPACE_SERVICE+"?"+parameters;
		
		GWT.log("Encoded url request is: "+urlRequest);
		
		
		RequestBuilder requestBuilder = new RequestBuilder(RequestBuilder.POST, urlRequest);
//		requestBuilder.setHeader("Content-Type", "application/x-www-form-urlencoded");
		try {
			
			requestBuilder.sendRequest("", new RequestCallback() {

			    @Override
			    public void onResponseReceived(Request request,  Response response) {
			    	
//			    	int status = response.getStatusCode();

					//expected <pre>200:Upload complete</pre>
					/*we strip tags added by webserver, 
					 * 
					 * Massi fix because webkit returns 
					 * <pre style="word-wrap: break-word; white-space: pre-wrap;">OK:File france_flag.png(0) imported correctly in /Workspace</pre>
					 * 
					 * TODO: recall it next time
					 */
					//String strippedResult = result.replace("<pre>", "").replace("</pre>", ""); //this won't work for webkit
					//replaced by new HTML(result).getText()
					String strippedResult = new HTML(response.getText()).getText();

					final HandlerResultMessage resultMessage = HandlerResultMessage.parseResult(strippedResult);

					switch (resultMessage.getStatus()) {
					case ERROR: 
//						new MessageBoxAlert("Error during upload", resultMessage.getMessage(), null); 
						GWT.log("Error during upload: "+resultMessage.getMessage());
						fileUploaderDlg.getDlg().showRegisteringResult(false);
						break;
					case UNKNOWN: 
//						new MessageBoxAlert("Error during upload", resultMessage.getMessage(), null); 
						GWT.log("Error during upload: "+resultMessage.getMessage());
						fileUploaderDlg.getDlg().showRegisteringResult(false);
						break;
					case WARN: {
//						new MessageBoxAlert("Upload completed with warnings", resultMessage.getMessage(), null); 
						GWT.log("Upload completed with warnings: "+resultMessage.getMessage());
						fileUploaderDlg.getDlg().showRegisteringResult(false);
						break;
					}
					case OK: {
						Timer t = new Timer() {
							public void run() {
								AppControllerExplorer.getEventBus().fireEvent(new CompletedFileUploadEvent(parent, null));
								fileUploaderDlg.getDlg().showRegisteringResult(true);
//								new InfoDisplayMessage("Upload completed successfully", resultMessage.getMessage());
							}
						};

						t.schedule(250);
						
					}
					}
			    }

			    @Override
			    public void onError(Request request, Throwable exception) {
			    	//					MessageUtil.showErrorMessage("Error during upload", "An error occurred during file upload.");
			    	
			    	fileUploaderDlg.getDlg().showRegisteringResult(false);
//					new MessageBoxAlert("Error during upload", "An error occurred during file upload.", null); 
					return;
			    }
			});
			
		} catch (RequestException e) {
			
		}
	}
	
	public void setOverwrite(){
		overwrite = true;
	}

	public String getFileName() {
		return fileName;
	}

	public void setFileName(String fileName) {
		this.fileName = fileName;
	}
}