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

import java.util.Date;
import java.util.List;

import org.gcube.portlets.user.workspace.client.AppControllerExplorer;
import org.gcube.portlets.user.workspace.client.model.FileGridModel;
import org.gcube.portlets.user.workspace.client.model.FileModel;
import org.gcube.portlets.user.workspace.client.resources.Resources;
import org.gcube.portlets.user.workspace.client.util.SizeUtil;
import org.gcube.portlets.widgets.workspacesharingwidget.client.rpc.WorkspaceSharingServiceAsync;
import org.gcube.portlets.widgets.workspacesharingwidget.shared.InfoContactModel;

import com.extjs.gxt.ui.client.Style.HorizontalAlignment;
import com.extjs.gxt.ui.client.Style.Scroll;
import com.extjs.gxt.ui.client.event.ButtonEvent;
import com.extjs.gxt.ui.client.event.SelectionListener;
import com.extjs.gxt.ui.client.widget.Dialog;
import com.extjs.gxt.ui.client.widget.HorizontalPanel;
import com.extjs.gxt.ui.client.widget.Html;
import com.extjs.gxt.ui.client.widget.Label;
import com.extjs.gxt.ui.client.widget.LayoutContainer;
import com.extjs.gxt.ui.client.widget.form.TextArea;
import com.extjs.gxt.ui.client.widget.form.TextField;
import com.extjs.gxt.ui.client.widget.layout.FormLayout;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Image;

/**
 * @author Francesco Mangiacrapa francesco.mangiacrapa{@literal @}isti.cnr.it
 *
 */
public class DialogGetInfo extends Dialog {

	/**
	 *
	 */
	public static final String EMPTY = "empty";
	public static final String UNKNOWN = "unknown";
	private int widthDialog = 450;
	private int heightTextArea = 50;
	private TextField<String> txtName = new TextField<String>();
	private TextField<String> txtId = new TextField<String>();
	private TextField<String> txtAreaDescription = new TextArea();
	private TextField<String> txtType = new TextField<String>();
	private TextField<String> txtCategory = new TextField<String>();
	private TextField<String> txtOwner = new TextField<String>();
	private TextField<String> txtLastMofication = new TextField<String>();
	private TextField<String> txtCreated = new TextField<String>();
	private TextField<String> txtSize = new TextField<String>();
	private TextField<String> txtLocation = new TextField<String>();
	private TextField<String> txtIsPublic = new TextField<String>();
	private TextField<String> txtThreddsSynched = new TextField<String>();
	private TextField<String> txtShared = new TextField<String>();
	// private TextArea textAreaSharedWith = new TextArea();
	private Html htmlUsersWidget = new Html();
	private Html htmlPropertiesWidget = new Html();
	//private final NumberFormat number = ConstantsExplorer.numberFormatterKB;
	// private TextField<String> txtGcubeItemProperties;
	private HorizontalPanel hpGcubeProperties;
	private DialogEditProperties editProperties = null;

	public DialogGetInfo(final FileModel fileModel) {

		FormLayout layout = new FormLayout();
		layout.setLabelWidth(90);
		layout.setDefaultWidth(300);
		setLayout(layout);

		setIcon(fileModel.getAbstractPrototypeIcon());
		setHeading(fileModel.getName() + " Properties");

		setButtonAlign(HorizontalAlignment.RIGHT);
		setModal(true);
		// setBodyBorder(true);
		setBodyStyle("padding: 9px; background: none");
		setWidth(widthDialog);
		setResizable(false);
		setButtons(Dialog.OK);

		txtName = new TextField<String>();
		txtName.setFieldLabel("Name");
		txtName.setReadOnly(true);
		textFieldSetValue(txtName, fileModel.getName());
		add(txtName);
		
		txtId = new TextField<String>();
		txtId.setFieldLabel("Identifier");
		txtId.setReadOnly(true);
		textFieldSetValue(txtId, fileModel.getIdentifier());
		add(txtId);


		txtLocation = new TextField<String>();
		txtLocation.setFieldLabel("Location");
		txtLocation.setReadOnly(true);

		if (fileModel.isRoot())
			txtLocation.setValue("/");
		else
			loadLocation(fileModel.getIdentifier());

		add(txtLocation);

		if (fileModel.isDirectory()) {
			txtIsPublic = new TextField<String>();
			txtIsPublic.setFieldLabel("Public Folder");
			txtIsPublic.setReadOnly(true);
			txtIsPublic.setValue(fileModel.isPublic() + "");
			add(txtIsPublic);

			if (fileModel.getSynchedWithWsThredds() != null) {
				txtThreddsSynched = new TextField<String>();
				txtThreddsSynched.setFieldLabel("Synched with Thredds");
				txtThreddsSynched.setReadOnly(true);
				txtThreddsSynched.setValue(fileModel.getSynchedWithWsThredds() + "");
				add(txtThreddsSynched);

			}

		}

		txtAreaDescription.setFieldLabel("Description");
		txtAreaDescription.setHeight(30);
		txtAreaDescription.setReadOnly(true);
		add(txtAreaDescription);

		// GCUBE PROPERTIES
		hpGcubeProperties = new HorizontalPanel();
		hpGcubeProperties.setStyleAttribute("padding-top", "6px");
		hpGcubeProperties.setStyleAttribute("margin-bottom", "6px");
		Label labelProperties = new Label("Properties");
		labelProperties.setTitle("Gcube Properties");
		labelProperties.setStyleAttribute("padding-right", "47px");
		hpGcubeProperties.add(labelProperties);
		loadGcubeItemProperties(fileModel.getIdentifier());
		htmlPropertiesWidget.setHeight(heightTextArea);
		htmlPropertiesWidget.setWidth("275px");

		LayoutContainer lc = new LayoutContainer();
		lc.addStyleName("editPermissions");

		Image imgProperties = Resources.getIconEdit().createImage(); // EDIT
																		// PROPERTIES
		imgProperties.setTitle("Edit Properties");
		lc.add(imgProperties);

		hpGcubeProperties.add(lc);

		final Command cmdReloadProperties = new Command() {

			@Override
			public void execute() {
				loadGcubeItemProperties(fileModel.getIdentifier());
			}
		};

		imgProperties.addClickHandler(new ClickHandler() {

			@Override
			public void onClick(ClickEvent event) {
				if (editProperties == null)
					editProperties = new DialogEditProperties(fileModel, cmdReloadProperties);

				editProperties.show();

			}
		});
		htmlPropertiesWidget.setStyleAttribute("margin-left", "5px");
		hpGcubeProperties.add(htmlPropertiesWidget);
		hpGcubeProperties.setScrollMode(Scroll.AUTOY);
		add(hpGcubeProperties);
		setVisibleGcubeProperties(false);

		if (fileModel.isDirectory()) {
			txtAreaDescription.setValue(fileModel.getDescription());
			// add(txtAreaDescription);
		} else
			loadDescription(fileModel.getIdentifier());

		txtType = new TextField<String>();
		txtType.setFieldLabel("Type");
		txtType.setReadOnly(true);
		textFieldSetValue(txtType, fileModel.getType());
		add(txtType);

		txtCategory = new TextField<String>();
		txtCategory.setFieldLabel("Category");
		txtCategory.setReadOnly(true);
		if (fileModel.getShortcutCategory() != null)
			textFieldSetValue(txtCategory, fileModel.getShortcutCategory().getValue());
		add(txtCategory);

		txtOwner = new TextField<String>();
		txtOwner.setFieldLabel("Owner");
		txtOwner.setReadOnly(true);
		loadOwner(fileModel.getIdentifier());
		add(txtOwner);

		txtCreated = new TextField<String>();
		txtCreated.setFieldLabel("Created");
		txtCreated.setReadOnly(true);

		loadCreationDate(fileModel.getIdentifier());

		add(txtCreated);

		txtLastMofication = new TextField<String>();
		txtLastMofication.setFieldLabel("Last Mofication");
		txtLastMofication.setReadOnly(true);
		if (fileModel instanceof FileGridModel)
			textFieldSetValue(txtLastMofication, ((FileGridModel) fileModel).getLastModification().toString());
		else
			loadLastModificationDate(fileModel.getIdentifier());

		add(txtLastMofication);

		txtSize = new TextField<String>();
		txtSize.setFieldLabel("Size");
		txtSize.setReadOnly(true);

		if (fileModel instanceof FileGridModel)
			textFieldSetValue(txtSize, getFormattedSize(((FileGridModel) fileModel).getSize()));
		else
			loadSize(fileModel.getIdentifier());

		add(txtSize);

		// SHARED
		txtShared = new TextField<String>();
		txtShared.setFieldLabel("Shared");
		txtShared.setReadOnly(true);
		textFieldSetValue(txtShared, fileModel.isShared() + "");
		add(txtShared);

		// USERS SHARED
		if (fileModel.isShared()) {

			HorizontalPanel hp = new HorizontalPanel();
			hp.setStyleAttribute("padding-top", "6px");
			Label label = new Label("Shared with");
			label.setStyleAttribute("padding-right", "39px");
			hp.add(label);
			loadACLsDescriptionForSharedFolder(fileModel.getIdentifier());
			htmlUsersWidget.setHeight(heightTextArea);
			htmlUsersWidget.setWidth("297px");
			hp.add(htmlUsersWidget);
			hp.setScrollMode(Scroll.AUTOY);
			add(hp);
		}

		this.getButtonById(Dialog.OK).addSelectionListener(new SelectionListener<ButtonEvent>() {

			@Override
			public void componentSelected(ButtonEvent ce) {
				hide();
			}
		});
		this.show();
	}

	private void setVisibleGcubeProperties(boolean bool) {
		hpGcubeProperties.setVisible(bool);
	}

	/**
	 * @param identifier
	 */
	private void loadDescription(String identifier) {
		txtAreaDescription.mask();

		AppControllerExplorer.rpcWorkspaceService.getItemDescriptionById(identifier, new AsyncCallback<String>() {

			@Override
			public void onFailure(Throwable arg0) {
				txtAreaDescription.unmask();

			}

			@Override
			public void onSuccess(String result) {
				if (result != null)
					txtAreaDescription.setValue(result);
				else
					txtAreaDescription.setValue("");

				txtAreaDescription.unmask();

			}
		});

	}

	private void loadLastModificationDate(final String itemId) {

		txtLastMofication.mask();
		AppControllerExplorer.rpcWorkspaceService.loadLastModificationDateById(itemId, new AsyncCallback<Date>() {

			@Override
			public void onFailure(Throwable caught) {
				GWT.log("an error occured in loadLastModificationDateById " + itemId + " " + caught.getMessage());
				txtLastMofication.unmask();

			}

			@Override
			public void onSuccess(Date result) {

				if (result != null)
					txtLastMofication.setValue(result.toString());
				else
					txtLastMofication.setValue(UNKNOWN);

				txtLastMofication.unmask();
			}
		});

	}

	private void textFieldSetValue(TextField<String> field, String value) {

		if (value == null || value.isEmpty())
			field.setValue(UNKNOWN);
		else
			field.setValue(value);
	}

	private void loadOwner(final String itemId) {

		txtOwner.mask();

		WorkspaceSharingServiceAsync.INSTANCE.getOwnerByItemId(itemId, new AsyncCallback<InfoContactModel>() {

			@Override
			public void onFailure(Throwable caught) {
				GWT.log("an error occured in get Owner by Id " + itemId + " " + caught.getMessage());
				txtOwner.unmask();
			}

			@Override
			public void onSuccess(InfoContactModel result) {
				textFieldSetValue(txtOwner, result.getName());
				txtOwner.unmask();
			}
		});
	}

	private void loadGcubeItemProperties(final String itemId) {
		GWT.log("Load GcubeItemProperties");
		htmlPropertiesWidget.mask();
		AppControllerExplorer.rpcWorkspaceService.getHTMLGcubeItemProperties(itemId, new AsyncCallback<String>() {

			@Override
			public void onFailure(Throwable caught) {
				htmlPropertiesWidget.unmask();
				GWT.log("an error occured in load properties by Id " + itemId + " " + caught.getMessage());
				setVisibleGcubeProperties(true);
				htmlPropertiesWidget.setHtml("Error on recovering properties");
			}

			@Override
			public void onSuccess(String result) {
				// setVisibleGcubeProperties(true);
				htmlPropertiesWidget.unmask();
				if (result != null) {
					setVisibleGcubeProperties(true);
					htmlPropertiesWidget.setHtml(result);
				}
				// else{
				// htmlPropertiesWidget.setHeight(20);
				// htmlPropertiesWidget.setHtml("None");
				// }
			}
		});
	}

	private void loadSize(final String itemId) {
		GWT.log("Load size");
		txtSize.mask();
		AppControllerExplorer.rpcWorkspaceService.loadSizeByItemId(itemId, new AsyncCallback<Long>() {

			@Override
			public void onFailure(Throwable caught) {
				GWT.log("an error occured in load creation date by Id " + itemId + " " + caught.getMessage());
				txtSize.unmask();

			}

			@Override
			public void onSuccess(Long result) {
				GWT.log("Loaded size=" + result);
				textFieldSetValue(txtSize, getFormattedSize(result));
				txtSize.unmask();
			}
		});
	}

	private void loadCreationDate(final String itemId) {

		txtCreated.mask();
		AppControllerExplorer.rpcWorkspaceService.getItemCreationDateById(itemId, new AsyncCallback<Date>() {

			@Override
			public void onFailure(Throwable caught) {
				GWT.log("an error occured in load creation date by Id " + itemId + " " + caught.getMessage());
				txtCreated.unmask();
			}

			@Override
			public void onSuccess(Date result) {
				if (result != null)
					textFieldSetValue(txtCreated, result.toString());

				txtCreated.unmask();
			}
		});
	}

	private void loadACLsDescriptionForSharedFolder(String sharedId) {

		htmlUsersWidget.mask();

		WorkspaceSharingServiceAsync.INSTANCE.getACLsDescriptionForSharedFolderId(sharedId,
				new AsyncCallback<String>() {

					@Override
					public void onFailure(Throwable caught) {
						htmlUsersWidget.unmask();
						htmlUsersWidget.setHtml("Error on recovering users");

					}

					@Override
					public void onSuccess(String result) {
						htmlUsersWidget.unmask();
						GWT.log("Loaded ACLs: " + result);
						htmlUsersWidget.setHtml(result);
					}
				});

	}

	private String getFormattedSize(long value) {

		if (value > 0) {
			return SizeUtil.readableFileSize(value);
		} else if (value == 0) {
			return EMPTY;
		} else
			return "";
	}

	private void loadLocation(String itemId) {

		txtLocation.mask();
		AppControllerExplorer.rpcWorkspaceService.getListParentsByItemIdentifier(itemId, false,
				new AsyncCallback<List<FileModel>>() {

					@Override
					public void onFailure(Throwable caught) {
						GWT.log("failure get list parents by item identifier " + caught);
						txtLocation.unmask();
					}

					@Override
					public void onSuccess(List<FileModel> result) {

						String location = "";
						if (result != null) {
							for (FileModel fileModel : result) {
								if (fileModel != null)
									location += "/" + fileModel.getName();
							}
						}
						if (location.isEmpty())
							location = "/";

						txtLocation.setValue(location);
						txtLocation.unmask();
					}
				});

	}
}