package org.ovirt.engine.ui.uicommonweb.models;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;

import org.ovirt.engine.core.common.businessentities.VDS;
import org.ovirt.engine.core.common.businessentities.VDSGroup;
import org.ovirt.engine.core.common.businessentities.storage_domains;
import org.ovirt.engine.core.common.businessentities.storage_pool;
import org.ovirt.engine.core.common.businessentities.gluster.GlusterVolumeEntity;
import org.ovirt.engine.core.common.mode.ApplicationMode;
import org.ovirt.engine.core.common.queries.StoragePoolQueryParametersBase;
import org.ovirt.engine.core.common.queries.VdcQueryParametersBase;
import org.ovirt.engine.core.common.queries.VdcQueryReturnValue;
import org.ovirt.engine.core.common.queries.VdcQueryType;
import org.ovirt.engine.core.compat.Event;
import org.ovirt.engine.core.compat.EventArgs;
import org.ovirt.engine.core.compat.EventDefinition;
import org.ovirt.engine.core.compat.Guid;
import org.ovirt.engine.core.compat.PropertyChangedEventArgs;
import org.ovirt.engine.ui.frontend.AsyncQuery;
import org.ovirt.engine.ui.frontend.Frontend;
import org.ovirt.engine.ui.frontend.INewAsyncCallback;
import org.ovirt.engine.ui.uicommonweb.UICommand;
import org.ovirt.engine.ui.uicommonweb.dataprovider.AsyncDataProvider;
import org.ovirt.engine.ui.uicompat.ConstantsManager;
import org.ovirt.engine.ui.uicompat.FrontendMultipleQueryAsyncResult;
import org.ovirt.engine.ui.uicompat.IFrontendMultipleQueryAsyncCallback;

@SuppressWarnings("unused")
public class SystemTreeModel extends SearchableListModel implements IFrontendMultipleQueryAsyncCallback
{

    public static EventDefinition ResetRequestedEventDefinition;
    private Event privateResetRequestedEvent;

    public Event getResetRequestedEvent()
    {
        return privateResetRequestedEvent;
    }

    private void setResetRequestedEvent(Event value)
    {
        privateResetRequestedEvent = value;
    }

    private UICommand privateResetCommand;

    public UICommand getResetCommand()
    {
        return privateResetCommand;
    }

    private void setResetCommand(UICommand value)
    {
        privateResetCommand = value;
    }

    private UICommand privateExpandAllCommand;

    public UICommand getExpandAllCommand()
    {
        return privateExpandAllCommand;
    }

    private void setExpandAllCommand(UICommand value)
    {
        privateExpandAllCommand = value;
    }

    private UICommand privateCollapseAllCommand;

    public UICommand getCollapseAllCommand()
    {
        return privateCollapseAllCommand;
    }

    private void setCollapseAllCommand(UICommand value)
    {
        privateCollapseAllCommand = value;
    }

    @Override
    public ArrayList<SystemTreeItemModel> getItems()
    {
        return (ArrayList<SystemTreeItemModel>) super.getItems();
    }

    public void setItems(ArrayList<SystemTreeItemModel> value)
    {
        if (items != value)
        {
            ItemsChanging(value, items);
            items = value;
            ItemsChanged();
            getItemsChangedEvent().raise(this, EventArgs.Empty);
            OnPropertyChanged(new PropertyChangedEventArgs("Items")); //$NON-NLS-1$
        }
    }

    private ArrayList<storage_pool> privateDataCenters;

    public ArrayList<storage_pool> getDataCenters()
    {
        return privateDataCenters;
    }

    public void setDataCenters(ArrayList<storage_pool> value)
    {
        privateDataCenters = value;
    }

    private HashMap<Guid, ArrayList<VDSGroup>> privateClusterMap;

    public HashMap<Guid, ArrayList<VDSGroup>> getClusterMap()
    {
        return privateClusterMap;
    }

    public void setClusterMap(HashMap<Guid, ArrayList<VDSGroup>> value)
    {
        privateClusterMap = value;
    }

    private HashMap<Guid, ArrayList<VDS>> privateHostMap;

    public HashMap<Guid, ArrayList<VDS>> getHostMap()
    {
        return privateHostMap;
    }

    public void setHostMap(HashMap<Guid, ArrayList<VDS>> value)
    {
        privateHostMap = value;
    }

    private HashMap<Guid, ArrayList<GlusterVolumeEntity>> privateVolumeMap;

    public HashMap<Guid, ArrayList<GlusterVolumeEntity>> getVolumeMap() {
        return privateVolumeMap;
    }

    public void setVolumeMap(HashMap<Guid, ArrayList<GlusterVolumeEntity>> value) {
        privateVolumeMap = value;
    }

    static
    {
        ResetRequestedEventDefinition = new EventDefinition("ResetRequested", SystemTreeModel.class); //$NON-NLS-1$
    }

    public SystemTreeModel()
    {
        setResetRequestedEvent(new Event(ResetRequestedEventDefinition));

        setResetCommand(new UICommand("Reset", this)); //$NON-NLS-1$
        setExpandAllCommand(new UICommand("ExpandAll", this)); //$NON-NLS-1$
        setCollapseAllCommand(new UICommand("CollapseAll", this)); //$NON-NLS-1$

        setIsTimerDisabled(true);

        setItems(new ArrayList<SystemTreeItemModel>());
    }

    @Override
    protected void AsyncSearch()
    {
        super.AsyncSearch();
        SyncSearch();
    }

    @Override
    protected void SyncSearch()
    {
        super.SyncSearch();

        AsyncQuery _asyncQuery = new AsyncQuery();
        _asyncQuery.setModel(this);
        _asyncQuery.asyncCallback = new INewAsyncCallback() {
            @Override
            public void OnSuccess(Object model, Object result)
            {
                SystemTreeModel systemTreeModel = (SystemTreeModel) model;
                systemTreeModel.setDataCenters((ArrayList<storage_pool>) result);

                AsyncQuery _asyncQuery1 = new AsyncQuery();
                _asyncQuery1.setModel(systemTreeModel);
                _asyncQuery1.asyncCallback = new INewAsyncCallback() {
                    @Override
                    public void OnSuccess(Object model1, Object result1)
                    {
                        SystemTreeModel systemTreeModel1 = (SystemTreeModel) model1;
                        ArrayList<VDSGroup> clusters = (ArrayList<VDSGroup>) result1;

                        systemTreeModel1.setClusterMap(new HashMap<Guid, ArrayList<VDSGroup>>());
                        for (VDSGroup cluster : clusters)
                        {
                            if (cluster.getstorage_pool_id() != null)
                            {
                                Guid key = cluster.getstorage_pool_id().getValue();
                                if (!systemTreeModel1.getClusterMap().containsKey(key))
                                {
                                    systemTreeModel1.getClusterMap().put(key, new ArrayList<VDSGroup>());
                                }
                                ArrayList<VDSGroup> list1 = systemTreeModel1.getClusterMap().get(key);
                                list1.add(cluster);
                            }
                        }
                        AsyncQuery _asyncQuery2 = new AsyncQuery();
                        _asyncQuery2.setModel(systemTreeModel1);
                        _asyncQuery2.asyncCallback = new INewAsyncCallback() {
                            @Override
                            public void OnSuccess(Object model2, Object result2)
                            {
                                SystemTreeModel systemTreeModel2 = (SystemTreeModel) model2;
                                ArrayList<VDS> hosts = (ArrayList<VDS>) result2;
                                systemTreeModel2.setHostMap(new HashMap<Guid, ArrayList<VDS>>());
                                for (VDS host : hosts)
                                {
                                    Guid key = host.getvds_group_id();
                                    if (!systemTreeModel2.getHostMap().containsKey(key))
                                    {
                                        systemTreeModel2.getHostMap().put(key, new ArrayList<VDS>());
                                    }
                                    ArrayList<VDS> list = systemTreeModel2.getHostMap().get(key);
                                    list.add(host);
                                }

                                AsyncQuery _asyncQuery3 = new AsyncQuery();
                                _asyncQuery3.setModel(systemTreeModel2);
                                _asyncQuery3.asyncCallback = new INewAsyncCallback() {
                                    @Override
                                    public void OnSuccess(Object model3, Object result3)
                                    {
                                        SystemTreeModel systemTreeModel3 = (SystemTreeModel) model3;
                                        ArrayList<GlusterVolumeEntity> volumes =
                                                (ArrayList<GlusterVolumeEntity>) result3;
                                        systemTreeModel3.setVolumeMap(new HashMap<Guid, ArrayList<GlusterVolumeEntity>>());

                                        for (GlusterVolumeEntity volume : volumes)
                                        {
                                            Guid key = volume.getClusterId();
                                            if (!systemTreeModel3.getVolumeMap().containsKey(key))
                                            {
                                                systemTreeModel3.getVolumeMap().put(key,
                                                        new ArrayList<GlusterVolumeEntity>());
                                            }
                                            ArrayList<GlusterVolumeEntity> list =
                                                    systemTreeModel3.getVolumeMap().get(key);
                                            list.add(volume);
                                        }

                                        ArrayList<VdcQueryType> queryTypeList =
                                                new ArrayList<VdcQueryType>();
                                        ArrayList<VdcQueryParametersBase> queryParamList =
                                                new ArrayList<VdcQueryParametersBase>();

                                        for (storage_pool dataCenter : systemTreeModel3.getDataCenters())
                                        {
                                            queryTypeList.add(VdcQueryType.GetStorageDomainsByStoragePoolId);
                                            queryParamList.add(new StoragePoolQueryParametersBase(dataCenter.getId()));
                                        }
                                        if ((ApplicationModeHelper.getUiMode().getValue() & ApplicationMode.VirtOnly.getValue()) == 0) {
                                            FrontendMultipleQueryAsyncResult dummyResult =
                                                    new FrontendMultipleQueryAsyncResult();
                                            VdcQueryReturnValue value = new VdcQueryReturnValue();
                                            value.setSucceeded(true);
                                            dummyResult.getReturnValues().add(value);
                                            Executed(dummyResult);
                                        } else {
                                            Frontend.RunMultipleQueries(queryTypeList, queryParamList, systemTreeModel3);
                                        }
                                    }
                                };
                                AsyncDataProvider.GetVolumeList(_asyncQuery3, null);
                            }
                        };
                        AsyncDataProvider.GetHostList(_asyncQuery2);
                    }
                };
                AsyncDataProvider.GetClusterList(_asyncQuery1);
            }
        };
        AsyncDataProvider.GetDataCenterList(_asyncQuery);
    }

    @Override
    public void ExecuteCommand(UICommand command)
    {
        super.ExecuteCommand(command);

        if (command == getResetCommand())
        {
            Reset();
        }
        else if (command == getExpandAllCommand())
        {
            ExpandAll();
        }
        else if (command == getCollapseAllCommand())
        {
            CollapseAll();
        }
    }

    private void CollapseAll()
    {
        SetIsExpandedRecursively(false, getItems().get(0));
    }

    private void ExpandAll()
    {
        SetIsExpandedRecursively(true, getItems().get(0));
    }

    private void SetIsExpandedRecursively(boolean value, SystemTreeItemModel root)
    {
        root.setIsExpanded(value);

        for (SystemTreeItemModel model : root.getChildren())
        {
            SetIsExpandedRecursively(value, model);
        }
    }

    private void Reset()
    {
        getResetRequestedEvent().raise(this, EventArgs.Empty);
    }

    @Override
    public void Executed(FrontendMultipleQueryAsyncResult result)
    {
        ArrayList<storage_domains> storages = null;
        int count = -1;

        // Build tree items.
        SystemTreeItemModel systemItem = new SystemTreeItemModel();
        systemItem.setType(SystemTreeItemType.System);
        systemItem.setIsSelected(true);
        systemItem.setTitle(ConstantsManager.getInstance().getConstants().systemTitle());

        for (VdcQueryReturnValue returnValue : result.getReturnValues())
        {
            ++count;
            if (!returnValue.getSucceeded())
            {
                continue;
            }
            storages = (ArrayList<storage_domains>) returnValue.getReturnValue();

            SystemTreeItemModel dataCenterItem = new SystemTreeItemModel();
            dataCenterItem.setType(SystemTreeItemType.DataCenter);
            dataCenterItem.setApplicationMode(ApplicationMode.VirtOnly);
            dataCenterItem.setTitle(getDataCenters().get(count).getname());
            dataCenterItem.setEntity(getDataCenters().get(count));
            systemItem.getChildren().add(dataCenterItem);

            SystemTreeItemModel storagesItem = new SystemTreeItemModel();
            storagesItem.setType(SystemTreeItemType.Storages);
            storagesItem.setApplicationMode(ApplicationMode.VirtOnly);
            storagesItem.setTitle(ConstantsManager.getInstance().getConstants().storageTitle());
            storagesItem.setParent(dataCenterItem);
            storagesItem.setEntity(getDataCenters().get(count));
            dataCenterItem.getChildren().add(storagesItem);

            if (storages != null && storages.size() > 0)
            {
                for (storage_domains storage : storages)
                {
                    SystemTreeItemModel storageItem = new SystemTreeItemModel();
                    storageItem.setType(SystemTreeItemType.Storage);
                    storageItem.setApplicationMode(ApplicationMode.VirtOnly);
                    storageItem.setTitle(storage.getstorage_name());
                    storageItem.setParent(dataCenterItem);
                    storageItem.setEntity(storage);
                    storagesItem.getChildren().add(storageItem);
                }
            }

            SystemTreeItemModel templatesItem = new SystemTreeItemModel();
            templatesItem.setType(SystemTreeItemType.Templates);
            templatesItem.setApplicationMode(ApplicationMode.VirtOnly);
            templatesItem.setTitle(ConstantsManager.getInstance().getConstants().templatesTitle());
            templatesItem.setParent(dataCenterItem);
            templatesItem.setEntity(getDataCenters().get(count));
            dataCenterItem.getChildren().add(templatesItem);

            SystemTreeItemModel clustersItem = new SystemTreeItemModel();
            clustersItem.setType(SystemTreeItemType.Clusters);
            clustersItem.setTitle(ConstantsManager.getInstance().getConstants().clustersTitle());
            clustersItem.setParent(dataCenterItem);
            clustersItem.setEntity(getDataCenters().get(count));
            dataCenterItem.getChildren().add(clustersItem);

            if (getClusterMap().containsKey(getDataCenters().get(count).getId()))
            {
                for (VDSGroup cluster : getClusterMap().get(getDataCenters().get(count).getId()))
                {

                    SystemTreeItemModel clusterItem = new SystemTreeItemModel();
                    clusterItem.setType(cluster.supportsGlusterService() ? SystemTreeItemType.Cluster_Gluster
                            : SystemTreeItemType.Cluster);
                    clusterItem.setTitle(cluster.getname());
                    clusterItem.setParent(dataCenterItem);
                    clusterItem.setEntity(cluster);
                    clustersItem.getChildren().add(clusterItem);

                    SystemTreeItemModel hostsItem = new SystemTreeItemModel();
                    hostsItem.setType(SystemTreeItemType.Hosts);
                    hostsItem.setTitle(ConstantsManager.getInstance().getConstants().hostsTitle());
                    hostsItem.setParent(clusterItem);
                    hostsItem.setEntity(cluster);
                    clusterItem.getChildren().add(hostsItem);

                    if (getHostMap().containsKey(cluster.getId()))
                    {
                        for (VDS host : getHostMap().get(cluster.getId()))
                        {
                            SystemTreeItemModel hostItem = new SystemTreeItemModel();
                            hostItem.setType(SystemTreeItemType.Host);
                            hostItem.setTitle(host.getvds_name());
                            hostItem.setParent(clusterItem);
                            hostItem.setEntity(host);
                            hostsItem.getChildren().add(hostItem);
                        }
                    }
                    if (cluster.supportsGlusterService())
                    {
                        SystemTreeItemModel volumesItem = new SystemTreeItemModel();
                        volumesItem.setType(SystemTreeItemType.Volumes);
                        volumesItem.setApplicationMode(ApplicationMode.GlusterOnly);
                        volumesItem.setTitle(ConstantsManager.getInstance().getConstants().volumesTitle());
                        volumesItem.setParent(clusterItem);
                        volumesItem.setEntity(cluster);
                        clusterItem.getChildren().add(volumesItem);

                        if (getVolumeMap().containsKey(cluster.getId())) {
                            for (GlusterVolumeEntity volume : getVolumeMap().get(cluster.getId())) {
                                SystemTreeItemModel volumeItem = new SystemTreeItemModel();
                                volumeItem.setType(SystemTreeItemType.Volume);
                                volumeItem.setApplicationMode(ApplicationMode.GlusterOnly);
                                volumeItem.setTitle(volume.getName());
                                volumeItem.setParent(volumesItem);
                                volumeItem.setEntity(volume);
                                volumesItem.getChildren().add(volumeItem);
                            }
                        }
                    }

                    if (cluster.supportsVirtService())
                    {
                        SystemTreeItemModel vmsItem = new SystemTreeItemModel();
                        vmsItem.setType(SystemTreeItemType.VMs);
                        vmsItem.setApplicationMode(ApplicationMode.VirtOnly);
                        vmsItem.setTitle(ConstantsManager.getInstance().getConstants().vmsTitle());
                        vmsItem.setParent(clusterItem);
                        vmsItem.setEntity(cluster);
                        clusterItem.getChildren().add(vmsItem);
                    }
                }
            }
        }
        if (!ApplicationModeHelper.getUiMode().equals(ApplicationMode.AllModes)) {
            ApplicationModeHelper.filterSystemTreeByApplictionMode(systemItem);
        }
        setItems(new ArrayList<SystemTreeItemModel>(Arrays.asList(new SystemTreeItemModel[] { systemItem })));
    }

    @Override
    protected String getListName() {
        return "SystemTreeModel"; //$NON-NLS-1$
    }

}
