D-Net

package eu.dnetlib.client.monitor;

import com.github.gwtbootstrap.client.ui.*;

import com.github.gwtbootstrap.client.ui.Button;

import com.github.gwtbootstrap.client.ui.constants.AlertType;

import com.github.gwtbootstrap.client.ui.constants.ButtonType;

import com.github.gwtbootstrap.client.ui.constants.FormType;

import com.google.gwt.core.client.GWT;

import com.google.gwt.dom.client.Document;

import com.google.gwt.dom.client.Style;

import com.google.gwt.event.dom.client.ClickEvent;

import com.google.gwt.event.dom.client.ClickHandler;

import com.google.gwt.i18n.client.DateTimeFormat;

import com.google.gwt.user.client.rpc.AsyncCallback;

import com.google.gwt.user.client.ui.*;

import com.google.gwt.user.client.ui.Label;

import com.google.gwt.user.client.ui.TextArea;

import eu.dnetlib.client.*;

import eu.dnetlib.client.widgets.FormFieldSet;

import eu.dnetlib.goldoa.domain.Budget;

import eu.dnetlib.goldoa.domain.BudgetInfo;

import eu.dnetlib.goldoa.domain.Request;

import java.util.List;

/**

 * Created by stefania on 4/2/15.

 */

public class MonitorBudgetsWidget implements MyWidget {

    private String token = "";

    private FlowPanel monitorBudgetsPagePanel = new FlowPanel();

    private Label monitorBudgetsTitleLabel = new Label();

    private Label monitorBudgetsInfoLabel = new Label();

    private Alert errorLabel = new Alert();

    private Alert warningLabel = new Alert();

    private FlowPanel budgetsForApprovalPanel = new FlowPanel();

    private DateTimeFormat dtf = DateTimeFormat.getFormat("yyyy/MM/dd");

    private DataServiceAsync dataService = GWT.create(DataService.class);

    public MonitorBudgetsWidget() {

        monitorBudgetsPagePanel.addStyleName("content");

        monitorBudgetsTitleLabel.setText("Monitor Budgets");

        monitorBudgetsTitleLabel.addStyleName("contentTitleLabel");

        monitorBudgetsInfoLabel.setText("Monitor and change the status of budget requests that are pending approval");

        monitorBudgetsInfoLabel.addStyleName("contentInfoLabel");

        errorLabel.addStyleName("alertLabel");

        errorLabel.setType(AlertType.ERROR);

        errorLabel.setClose(false);

        errorLabel.setVisible(false);

        warningLabel.addStyleName("alertLabel");

        warningLabel.setType(AlertType.WARNING);

        warningLabel.setClose(false);

        warningLabel.setVisible(false);

        budgetsForApprovalPanel.addStyleName("budgetsListPanel");

        monitorBudgetsPagePanel.add(monitorBudgetsTitleLabel);

        monitorBudgetsPagePanel.add(monitorBudgetsInfoLabel);

        monitorBudgetsPagePanel.add(errorLabel);

        monitorBudgetsPagePanel.add(warningLabel);

        monitorBudgetsPagePanel.add(budgetsForApprovalPanel);

    }

    @Override

    public void clear() {

        errorLabel.setVisible(false);

        warningLabel.setVisible(false);

        budgetsForApprovalPanel.clear();

    }

    @Override

    public void reload() {

        MyWidgetHelper.hideSidebar();

        SidebarPanel helpPanel = new SidebarPanel("Help");

        MyWidgetHelper.loadHelp(helpPanel, token.split("\\.")[0]);

        loadBudgets();

    }

    @Override

    public void setToken(String token) {

        this.token = token;

    }

    @Override

    public void afterAdditionToRootPanel() {

    }

    @Override

    public Widget asWidget() {

        return monitorBudgetsPagePanel;

    }

    private void loadBudgets() {

        errorLabel.setVisible(false);

        warningLabel.setVisible(false);

        final HTML loadingWheel = new HTML("<div class=\"loader-big\"></div><div class=\"whiteFilm\"></div>");

        budgetsForApprovalPanel.addStyleName("loading");

        budgetsForApprovalPanel.add(loadingWheel);

        dataService.getBudgets(new AsyncCallback<List<BudgetInfo>>() {

            @Override

            public void onFailure(Throwable throwable) {

                budgetsForApprovalPanel.clear();

                budgetsForApprovalPanel.removeStyleName("loading");

                errorLabel.setText("System error retrieving budgets");

                errorLabel.setVisible(true);

            }

            @Override

            public void onSuccess(List<BudgetInfo> budgetInfoList) {

                budgetsForApprovalPanel.clear();

                budgetsForApprovalPanel.removeStyleName("loading");

                if (budgetInfoList.isEmpty()) {

                    warningLabel.setText("No available budgets at the moment.");

                    warningLabel.setVisible(true);

                } else {

                    for (int i = 0; i < budgetInfoList.size(); i++)

                        drawBudgetInfo(budgetInfoList.get(i), i);

                }

            }

        });

    }

    private void drawBudgetInfo(final BudgetInfo budgetInfo, int i) {

        final FlowPanel budgetElement = new FlowPanel();

        budgetElement.addStyleName("budgetRequest");

        if(((i+1)%2)==1)

            budgetElement.addStyleName("odd");

        final Alert errorLabel = new Alert();

        errorLabel.addStyleName("alertLabel");

        errorLabel.setType(AlertType.ERROR);

        errorLabel.setVisible(false);

        errorLabel.setClose(false);

        BudgetInfoElement budgetInfoElement = new BudgetInfoElement(budgetInfo);

        FlowPanel actionButtons = new FlowPanel();

        Button approve = new Button("Approve");

        Button reject = new Button("Reject");

        final FlowPanel divider = new FlowPanel();

        final Form commentsForm = new Form();

        final TextArea comments = new TextArea();

        commentsForm.setType(FormType.VERTICAL);

        comments.setEnabled(false);

        if(budgetInfo.getComment()!=null)

            comments.setValue(budgetInfo.getComment());

        commentsForm.add(new FormFieldSet("Comments", comments));

        actionButtons.addStyleName("requestInfoActionButtons");

        approve.addStyleName("requestInfoActionButton");

        approve.setType(ButtonType.SUCCESS);

        approve.addClickHandler(new ClickHandler() {

            @Override

            public void onClick(ClickEvent clickEvent) {

                errorLabel.setVisible(false);

                dataService.approveBudget(budgetInfo.getId(), comments.getValue().trim(), new AsyncCallback<Void>() {

                    @Override

                    public void onFailure(Throwable throwable) {

                        errorLabel.setText("System error approving budget");

                        errorLabel.setVisible(true);

                    }

                    @Override

                    public void onSuccess(Void aVoid) {

                        budgetInfo.setStatus(Budget.Status.APPROVED);

                        BudgetInfoElement budgetInfoElement = new BudgetInfoElement(budgetInfo);

                        budgetElement.clear();

                        budgetElement.add(errorLabel);

                        budgetElement.add(budgetInfoElement.asWidget());

                        budgetElement.add(divider);

                        budgetElement.add(commentsForm);

                        comments.setEnabled(false);

                    }

                });

            }

        });

        actionButtons.add(approve);

        reject.addStyleName("requestInfoActionButton");

        reject.setType(ButtonType.DANGER);

        reject.addClickHandler(new ClickHandler() {

            @Override

            public void onClick(ClickEvent clickEvent) {

                errorLabel.setVisible(false);

                dataService.rejectBudget(budgetInfo.getId(), comments.getValue().trim(), new AsyncCallback<Void>() {

                    @Override

                    public void onFailure(Throwable throwable) {

                        errorLabel.setText("System error rejecting budget");

                        errorLabel.setVisible(true);

                    }

                    @Override

                    public void onSuccess(Void aVoid) {

                        budgetInfo.setStatus(Budget.Status.REJECTED);

                        BudgetInfoElement budgetInfoElement = new BudgetInfoElement(budgetInfo);

                        budgetElement.clear();

                        budgetElement.add(errorLabel);

                        budgetElement.add(budgetInfoElement.asWidget());

                        budgetElement.add(divider);

                        budgetElement.add(commentsForm);

                        comments.setEnabled(false);

                    }

                });

            }

        });

        actionButtons.add(reject);

        divider.addStyleName("uk-grid-divider");

        budgetElement.add(errorLabel);

        budgetElement.add(budgetInfoElement.asWidget());

        budgetElement.add(divider);

        budgetElement.add(commentsForm);

        if(!budgetInfo.getStatus().equals(Budget.Status.APPROVED) && !budgetInfo.getStatus().equals(Budget.Status.REJECTED)) {

            comments.setEnabled(true);

            budgetElement.add(actionButtons);

        }

        budgetsForApprovalPanel.add(budgetElement);

    }

}