@Named
@ViewScoped
public class OrganigramView implements Serializable {

    private OrganigramNode rootNode;
    private OrganigramNode selection;

    private boolean zoom = false;
    private String style = "width: 800px";
    private int leafNodeConnectorHeight = 0;
    private boolean autoScrollToSelection = false;

    private String employeeName;

    @PostConstruct
    public void init() {
        selection = new DefaultOrganigramNode(null, "Ridvan Agar", null);

        rootNode = new DefaultOrganigramNode("root", "CommerceBay GmbH", null);
        rootNode.setCollapsible(false);
        rootNode.setDroppable(true);


        OrganigramNode softwareDevelopment = addDivision(rootNode, "Software Development", "Ridvan Agar");

        OrganigramNode teamJavaEE = addDivision(softwareDevelopment, "Team JavaEE");
        addDivision(teamJavaEE, "JSF", "Thomas Andraschko");
        addDivision(teamJavaEE, "Backend", "Marie Louise");

        OrganigramNode teamMobile = addDivision(softwareDevelopment, "Team Mobile");
        addDivision(teamMobile, "Android", "Andy Ruby");
        addDivision(teamMobile, "iOS", "Stevan Jobs");

        addDivision(rootNode, "Managed Services", "Thorsten Schultze", "Sandra Becker");

        OrganigramNode marketing = addDivision(rootNode, "Marketing");
        addDivision(marketing, "Social Media", "Ali Mente", "Lisa Boehm");
        addDivision(marketing, "Press", "Michael Gmeiner", "Hans Peter");

        addDivision(rootNode, "Management", "Hassan El Manfalouty");
    }

    protected OrganigramNode addDivision(OrganigramNode parent, String name, String... employees) {
        OrganigramNode divisionNode = new DefaultOrganigramNode("division", name, parent);
        divisionNode.setDroppable(true);
        divisionNode.setDraggable(true);
        divisionNode.setSelectable(true);

        if (employees != null) {
            for (String employee : employees) {
                OrganigramNode employeeNode = new DefaultOrganigramNode("employee", employee, divisionNode);
                employeeNode.setDraggable(true);
                employeeNode.setSelectable(true);
            }
        }

        return divisionNode;
    }

    public void nodeDragDropListener(OrganigramNodeDragDropEvent event) {
        FacesMessage message = new FacesMessage();
        message.setSummary("Node '" + event.getOrganigramNode().getData() + "' moved from " + event.getSourceOrganigramNode().getData() + " to '" + event.getTargetOrganigramNode().getData() + "'");
        message.setSeverity(FacesMessage.SEVERITY_INFO);

        FacesContext.getCurrentInstance().addMessage(null, message);
    }

    public void nodeSelectListener(OrganigramNodeSelectEvent event) {
        FacesMessage message = new FacesMessage();
        message.setSummary("Node '" + event.getOrganigramNode().getData() + "' selected.");
        message.setSeverity(FacesMessage.SEVERITY_INFO);

        FacesContext.getCurrentInstance().addMessage(null, message);
    }

    public void nodeCollapseListener(OrganigramNodeCollapseEvent event) {
        FacesMessage message = new FacesMessage();
        message.setSummary("Node '" + event.getOrganigramNode().getData() + "' collapsed.");
        message.setSeverity(FacesMessage.SEVERITY_INFO);

        FacesContext.getCurrentInstance().addMessage(null, message);
    }

    public void nodeExpandListener(OrganigramNodeExpandEvent event) {
        FacesMessage message = new FacesMessage();
        message.setSummary("Node '" + event.getOrganigramNode().getData() + "' expanded.");
        message.setSeverity(FacesMessage.SEVERITY_INFO);

        FacesContext.getCurrentInstance().addMessage(null, message);
    }

    public void removeDivision() {
        // re-evaluate selection - might be a differenct object instance if viewstate serialization is enabled
        OrganigramNode currentSelection = OrganigramHelper.findTreeNode(rootNode, selection);
        setMessage(currentSelection.getData() + " will entfernt werden.", FacesMessage.SEVERITY_INFO);
    }

    public void removeEmployee() {
        // re-evaluate selection - might be a differenct object instance if viewstate serialization is enabled
        OrganigramNode currentSelection = OrganigramHelper.findTreeNode(rootNode, selection);
        currentSelection.getParent().getChildren().remove(currentSelection);
    }

    public void addEmployee() {
        // re-evaluate selection - might be a differenct object instance if viewstate serialization is enabled
        OrganigramNode currentSelection = OrganigramHelper.findTreeNode(rootNode, selection);

        OrganigramNode employee = new DefaultOrganigramNode("employee", employeeName, currentSelection);
        employee.setDraggable(true);
        employee.setSelectable(true);
    }

    private void setMessage(String msg, FacesMessage.Severity severity) {
        FacesMessage message = new FacesMessage();
        message.setSummary(msg);
        message.setSeverity(severity);
        FacesContext.getCurrentInstance().addMessage(null, message);
    }

    public OrganigramNode getRootNode() {
        return rootNode;
    }

    public void setRootNode(OrganigramNode rootNode) {
        this.rootNode = rootNode;
    }

    public OrganigramNode getSelection() {
        return selection;
    }

    public void setSelection(OrganigramNode selection) {
        this.selection = selection;
    }

    public boolean isZoom() {
        return zoom;
    }

    public void setZoom(boolean zoom) {
        this.zoom = zoom;
    }

    public String getEmployeeName() {
        return employeeName;
    }

    public void setEmployeeName(String employeeName) {
        this.employeeName = employeeName;
    }

    public String getStyle() {
        return style;
    }

    public void setStyle(String style) {
        this.style = style;
    }

    public int getLeafNodeConnectorHeight() {
        return leafNodeConnectorHeight;
    }

    public void setLeafNodeConnectorHeight(int leafNodeConnectorHeight) {
        this.leafNodeConnectorHeight = leafNodeConnectorHeight;
    }

    public boolean isAutoScrollToSelection() {
        return autoScrollToSelection;
    }

    public void setAutoScrollToSelection(boolean autoScrollToSelection) {
        this.autoScrollToSelection = autoScrollToSelection;
    }
}